Wheelchair position automatic locking device for pre-embedded tram

Abstract

The utility model discloses a wheelchair position automatic locking device for preburied tram, including drive assembly: preburied in the floor of vehicle, including base, the drive shaft of being placed in the both ends of base and the rubber belt of being connected in both ends drive shaft, the upper end surface of drive assembly is exposed type, stop mechanism: place in drive assembly front end, including preburied stop base and the stop component of being placed in the base, the stop component includes first stop block and the second stop block of being placed first stop block top, connecting component: place between drive assembly with stop component, for the connection of both. The utility model has the advantages of: the utility model preburied the floor under the vehicle, through the friction of wheelchair wheel and device belt can realize the stop of stop mechanism to wheelchair wheel position or the stop of releasing, compared with the form of artificial bandage is more convenient and fast, and the stability of pure mechanical linkage structure is high, and the practicality is strong.

Description

Technical Field

[0001] This utility model belongs to the technical field of barrier-free equipment for rail vehicles, and in particular relates to a pre-embedded automatic wheelchair positioning locking device for trams. Background Technology

[0002] Modern trams (or streetcars) are an upgraded version of traditional trams. They combine the efficiency and reliability of subways with the flexibility of buses, often referred to as "subways on the ground." Trams obtain electricity through overhead cables or ground-based power systems, achieving zero-emission operation and offering advantages such as electric drive, environmental friendliness, and energy conservation. Furthermore, their low-floor design makes it easier for passengers (especially the elderly, children, and disabled) to get on and off. However, wheelchair access remains a challenge. Currently, the tram only has a "wheelchair parking area" and a simple seatbelt. After a wheelchair enters, the conductor must bend over to operate it, which is time-consuming, prone to being missed, and poses a certain danger. Some locking devices rely on electric or pneumatic clamps, requiring corresponding power / pneumatic equipment at the vehicle end. This method and device have a high failure rate and are expensive to maintain. Therefore, developing a safe and effective locking device for wheelchairs is essential. Utility Model Content

[0003] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a pre-embedded automatic wheelchair position locking device for trams, which can safely, effectively and more conveniently lock the position of the wheelchair.

[0004] The objective of this utility model is achieved through the following technical solution: An embedded automatic wheelchair positioning locking device for trams includes a drive assembly: embedded in the vehicle floor, comprising a base, drive shafts located at both ends of the base, and rubber belts connected to the drive shafts at both ends, wherein the upper end face of the drive assembly is exposed. Stopping mechanism: located at the front end of the drive assembly, including a pre-embedded stop base and a stop assembly placed in the base, the stop assembly including a first stop block and a second stop block placed above the first stop block; Connection component: Located between the drive component and the stop component, for connecting the two.

[0005] Preferably, a first gear is connected to the drive shaft at one end of the base, and the first gear is connected to the connecting assembly.

[0006] Preferably, the connecting assembly includes a connecting rod and a connecting rod gear assembly disposed on the connecting rod. The connecting rod gear assembly includes a first connecting rod gear and a second connecting rod gear. The first connecting rod gear meshes with a first gear, and the second connecting rod gear meshes with a rack on the connecting rod.

[0007] Preferably, the first connecting rod gear and the second connecting rod gear are respectively disposed at both ends of the connecting rod.

[0008] Preferably, the connecting rod is in the form of three sections, including a bottom section, a connecting section, and a pushing section that are vertically connected from end to end. The rack is distributed in the bottom section, and the pushing section is connected to one end of the first stop block.

[0009] Preferably, the bottom of the first stop block is provided with a sliding groove, and the first stop block cooperates with the protruding guide rail in the stop base through the sliding groove.

[0010] Preferably, the first stop block and the second stop block are connected by a set of stop rods, the stop rods including a front stop rod and a rear stop rod, the length of the front stop rod being greater than the length of the rear stop rod.

[0011] Preferably, the rear stop bar is located at the proximal end of the stop assembly, close to the push section.

[0012] Preferably, the two ends of the stop rod are hinged to the first stop block and the second stop block, respectively.

[0013] Preferably, the connection distance between the front stop bar and the rear stop bar on the first stop block is less than the connection distance between the front stop bar and the rear stop bar on the second stop block.

[0014] Preferably, a set of locking devices is arranged in parallel, and the parallel spacing between them matches the distance between the main wheels of the wheelchair.

[0015] The beneficial effects of this utility model are as follows: This utility model is embedded under the floor of the vehicle, and the stopping mechanism can stop or release the wheelchair wheel position by friction between the wheelchair wheel and the device belt. Compared with the manual strapping method, it is more convenient and faster. The purely mechanical linkage structure has high stability and strong practicality. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is a schematic diagram of the structure of the present invention after the hidden part of the structure is shown. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following description is provided in conjunction with the appendix. Figures 1-2 The present invention will be further described in detail below with reference to embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the present invention.

[0020] This invention discloses a pre-embedded automatic wheelchair positioning locking device for trams. Applied to low-floor vehicles, such as trams, this device effectively secures the wheelchair, preventing unnecessary slippage or forward tilting, thus providing a locking function. The device includes a drive assembly and a stop mechanism located at the front end of the drive assembly, connected via a connecting assembly. When the drive assembly is activated, the stop mechanism is activated via the connecting assembly.

[0021] The drive assembly 1 is embedded in the vehicle floor, with its upper surface exposed. The drive assembly 1 includes a base, drive shafts 15 positioned at both ends of the base, and rubber belts 11 connecting the drive shafts 15 at both ends. When the surface of the rubber belts 11 is subjected to friction, the rubber belts 11 also drive the drive shafts 15 to rotate. In this embodiment, a first gear 12 is connected to one end of the drive shaft 15. The first gear 12 is positioned on one side of the rubber belts 11; when the rubber belts 11 drive the drive shafts 15 to rotate, they simultaneously drive the first gear 12 to rotate.

[0022] The connecting component is connected to the drive component 1 via the first gear 12. Specifically, it includes a connecting rod 3 and a connecting rod gear assembly placed on the connecting rod 3. The connecting rod 3 is in the form of three sections, including a bottom section 33, a connecting section 32, and a pushing section 31 that are connected vertically from end to end. The bottom section 33 is rack-shaped.

[0023] The connecting rod and gear assembly includes a first connecting rod gear 13 and a second connecting rod gear 14 disposed at both ends of the connecting rod. The first connecting rod gear 13 meshes with a first gear 12. The second connecting rod gear 12 is placed on the bottom section 33 and meshes with the rack 33 of the bottom section 33. When the first connecting rod gear 13 rotates under the drive of the first gear 12, it will drive the second connecting rod gear 14 to rotate. At this time, since it meshes with the rack 33, the rotational motion is converted into a linear (forward and backward) motion of the connecting rod.

[0024] The stopping mechanism includes a pre-embedded stopping base 2 and a stopping assembly placed within the base 2. One end of the stopping assembly is connected to the pushing section 31. Similarly, the upper surface of the stopping mechanism is exposed. Specifically, the stopping assembly includes a first stopping block 21 and a second stopping block 22 placed above the first stopping block 21. To allow for smoother movement within the stopping base 2, a groove (not shown in the figure) is provided at the bottom of the first stopping block 21. The first stopping block 21 engages with a raised guide rail (not shown in the figure) within the stopping base 2 via the groove. The pushing section 31 is connected to the proximal end of the first stopping block 21. The proximal end of the first stopping block 21 is the end closest to the driving assembly.

[0025] The first stop block 21 and the second stop block 22 are connected by a set of stop rods, with both ends of the stop rods hinged to the first stop block 21 and the second stop block 22, respectively. The stop rods include a front stop rod 23 and a rear stop rod 24, with the front stop rod 23 being longer than the rear stop rod 24. The rear stop rod 24 is located at the proximal end of the stop assembly, close to the pushing section 31.

[0026] The connection distance between the front stop bar 23 and the rear stop bar 24 on the first stop block is less than the connection distance between the front stop bar 23 and the rear stop bar 24 on the second stop block. That is, the distance between the first connection point 221 and the second connection point 222 in the figure is greater than the distance between the third connection point 211 and the fourth connection point 212. When the stop mechanism is in the initial position, the surface of the second stop block 22 is flush with the surface of the stop base. When the stop mechanism is pushed by the pushing section 31, the pushing section 31 pushes the first stop block 21 to move forward in the stop base. At this time, under the action of the stop bar, the second stop block 22 will be raised and one end 223 will be higher than the other end 224.

[0027] In practical application, the wheelchair reverses onto the rubber belt 11, and the friction causes the rubber belt 11 to shift, interlocking and ultimately lifting the second stop block 22, blocking the front of the wheelchair wheels and locking the position. When the wheelchair needs to be unlocked, the wheelchair wheels are rotated forward, and the friction causes the rubber belt 11 to shift in another direction, thus unlocking the device. This device, through a structural concept of triggering a chain reaction, converts horizontal linear motion into the lifting of a pre-embedded stop mechanism, restricting wheel movement and allowing the wheelchair to move smoothly away, making it highly practical.

[0028] Of course, in typical setups, this device appears as a set, meaning the distance between the two sets matches the distance between the main wheels of a standard 24-inch wheelchair. In the description of this utility model, it should be noted that the terms "upper," "lower," "left," "right," "horizontal," "inner," and "outer," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are used only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] There are many specific application examples of this utility model. The above description is only a preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements can be made without departing from the principle of this utility model, and these improvements should also be considered within the protection scope of this utility model.

Claims

1. A pre-embedded automatic wheelchair positioning locking device for trams, characterized in that, Includes a drive assembly: embedded in the vehicle floor, including a base, drive shafts located at both ends of the base, and rubber belts connecting the drive shafts at both ends, wherein the upper end face of the drive assembly is exposed; Stopping mechanism: located at the front end of the drive assembly, including a pre-embedded stop base and a stop assembly placed in the base, the stop assembly including a first stop block and a second stop block placed above the first stop block; Connection component: Located between the drive component and the stop component, for connecting the two.

2. The pre-embedded automatic wheelchair positioning locking device for trams according to claim 1, characterized in that, A first gear is connected to the drive shaft at one end of the base, and the first gear is connected to the connecting assembly.

3. The pre-embedded automatic wheelchair positioning locking device for trams according to claim 2, characterized in that, The connecting assembly includes a connecting rod and a connecting rod gear assembly placed on the connecting rod. The connecting rod gear assembly includes a first connecting rod gear and a second connecting rod gear. The first connecting rod gear meshes with a first gear, and the second connecting rod gear meshes with a rack on the connecting rod.

4. The pre-embedded automatic wheelchair positioning locking device for trams according to claim 3, characterized in that, The first connecting rod gear and the second connecting rod gear are respectively located at both ends of the connecting rod.

5. The pre-embedded automatic wheelchair positioning locking device for trams according to claim 4, characterized in that, The connecting rod is in the form of three sections, including a bottom section, a connecting section, and a pushing section that are connected vertically from end to end. The rack is distributed in the bottom section, and the pushing section is connected to one end of the first stop block.

6. The pre-embedded automatic wheelchair positioning locking device for trams according to claim 1, characterized in that, The bottom of the first stop block is provided with a sliding groove, and the first stop block cooperates with the raised guide rail in the stop base through the sliding groove.

7. The pre-embedded automatic wheelchair positioning locking device for trams according to claim 1, characterized in that, The first stop block and the second stop block are connected by a set of stop rods. The stop rods include a front stop rod and a rear stop rod. The length of the front stop rod is greater than the length of the rear stop rod. The rear stop rod is located at the near end of the stop assembly, close to the push section.

8. The pre-embedded automatic wheelchair positioning locking device for trams according to claim 7, characterized in that, The two ends of the stop rod are respectively hinged to the first stop block and the second stop block.

9. The pre-embedded automatic wheelchair positioning locking device for trams according to claim 7, characterized in that, The connection distance between the front stop bar and the rear stop bar on the first stop block is less than the connection distance between the front stop bar and the rear stop bar on the second stop block.

10. The pre-embedded automatic wheelchair positioning locking device for trams according to claim 1, characterized in that, The locking devices are arranged in a parallel set, and their parallel spacing matches the distance between the main wheels of the wheelchair.

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