Subway carriage wheelchair limiting device

Abstract

The utility model relates to the technical field of wheelchair limiting devices, and discloses a metro carriage wheelchair limiting device which comprises a metro floor and a carriage fixedly connected to the top end of the metro floor, a first limiting mechanism is arranged on the metro floor, and a second limiting mechanism is arranged on the outer wall of the carriage. A wheelchair can be directly pushed into a limiting groove formed in the top end of a subway floor, the wheelchair can be limited, a motor is started, the output end of the motor drives a threaded rod to rotate, when the threaded rod rotates, a threaded block is driven to move forwards, and at the moment, the threaded block drives a connecting rotating rod to move forwards; meanwhile, an extrusion roller is driven to move forwards and roll at the same time, when the extrusion roller moves, the extrusion roller moves from the high position of a supporting plate to the low position of the supporting plate, at the moment, the supporting plate can be extruded, and the extruded supporting plate can rotate upwards through rotation between a rotating shaft and the inner wall of a limiting groove till the supporting plate is flush with the subway floor; and then the wheelchair is pushed out.

Description

Technical Field

[0001] The utility model belongs to the technical field of wheelchair limiting devices, and particularly relates to a wheelchair limiting device for a subway carriage. Background Art

[0002] A wheelchair is a chair equipped with wheels that can help replace walking, facilitating family members to move and take care of patients, enabling patients to exercise their bodies and participate in social activities with the help of wheelchairs.

[0003] After retrieval, CN220404277U3 discloses a wheelchair limiting device for a subway carriage. By fixedly installing a plurality of limiting boxes on the floor of the subway carriage, when the wheelchair body reaches here, the wheels of the wheelchair body can be directly pushed into the corresponding limiting boxes to achieve limiting, which is fast and direct. There is no need to adjust the appropriate length of the binding straps and then bind the wheelchair, and it is relatively convenient to use. When the wheelchair body needs to drive away, when the handle of the tensioner is directly pulled down to the notch of the limiting groove, the steel cable 1 and the steel cable 2 can lift the sunken support plate inside the limiting box to the horizontal position. At this time, the wheels of the wheelchair body can be lifted to the horizontal position of the subway carriage floor, and then it can drive away, which is convenient and fast.

[0004] When this limiting device releases the limit, it is necessary to manually pull the tensioner. In this way, most of the weight of the wheelchair will be transmitted to the tensioner through the steel cable. Therefore, the staff needs to use a relatively large force to pull the support plate, which is rather laborious and not convenient to use.

[0005] In view of this, the present utility model is specifically proposed. Content of the Utility Model

[0006] To solve the above technical problem that when this limiting device releases the limit, it is necessary to manually pull the tensioner. In this way, most of the weight of the wheelchair will be transmitted to the tensioner through the steel cable. Therefore, the staff needs to use a relatively large force to pull the support plate, which is rather laborious and not convenient to use, the basic concept of the technical solution adopted by the present utility model is:

[0007] A wheelchair limiting device for a subway carriage, including a subway floor;

[0008] A carriage fixedly connected to the top of the subway floor, a first limiting mechanism is arranged on the subway floor, a second limiting mechanism is arranged on the outer wall of the carriage, and the first limiting mechanism includes a motor:

[0009] A placement groove is opened at the top end of the subway floor. The outer wall of the motor is fixedly connected in this placement groove. The output end of the motor is fixedly connected with a threaded rod. A threaded block is threadedly connected to the outer wall of the threaded rod. A connecting rotating rod is rotatably connected to the outer wall of the threaded block through a bearing. One end of the connecting rotating rod away from the bearing is rotatably connected with a pressing roller. A limiting groove is opened at the top end of the subway floor. A rotating chute is opened on the inner wall of this limiting groove. One end of the connecting rotating rod away from the pressing roller is movably connected to the inner wall of this rotating chute. The top end of the pressing roller contacts a support plate. One end of the support plate is fixedly connected with a rotating shaft. A rotating hole is opened on the inner wall of the limiting groove opened at the top end of the subway floor. The outer wall of the rotating shaft is rotatably connected to the inner wall of this rotating hole. A communicating cavity is opened inside the subway floor. A chute is opened at the bottom end of the inner wall of this communicating cavity. A support slider is slidably connected to the inner wall of the chute. The outer wall of the connecting rotating rod movably penetrates through the outer wall of the support slider.

[0010] As a preferred embodiment of the present invention, the second limiting mechanism includes a sliding sleeve rotatably connected to the outer wall of the carriage. A limiting rod is slidably connected to the inner wall of the sliding sleeve. A limiting plate is fixedly connected to the outer wall of the carriage. The limiting rod is slidably in contact with the top end of the limiting plate. A fixed block is fixedly connected to the outer wall of the sliding sleeve. A sliding hole communicating with the inner wall of the sliding sleeve is opened on the outer wall of the fixed block. A sliding column is slidably connected to the inner wall of this sliding hole. One end of the sliding column away from the sliding hole is fixedly connected with a pulling plate. A spring is fixedly connected to one end of the pulling plate close to the sliding column. The other end of the spring away from the pulling plate is fixedly connected to the outer wall of the fixed block.

[0011] As a preferred embodiment of the present invention, the number of the support plates is two. The support plates are distributed symmetrically left and right on the inner wall of the limiting groove opened at the top end of the subway floor. The initial state of the support plates is an inclined state.

[0012] As a preferred embodiment of the present invention, the inner walls of the rotating chute and the chute are respectively in close fit with the outer walls of the connecting rotating rod and the support slider.

[0013] As a preferred embodiment of the present invention, a number of positioning holes are opened on the outer wall of the limiting rod. The inner walls of these positioning holes are respectively in close fit with the outer walls of the sliding hole opened on the outer wall of the fixed block and the inner and outer walls of the sliding column.

[0014] As a preferred embodiment of the present invention, the inner wall of the sliding sleeve is in close fit with the outer wall of the limiting rod.

[0015] The present invention has the following beneficial effects compared with the prior art:

[0016] In this utility model, the wheelchair can be directly pushed into the limiting groove opened at the top of the subway floor to limit the wheelchair. When it is necessary to release the limit and push out the wheelchair, the motor can be started. The output end of the motor drives the threaded rod to rotate. When the threaded rod rotates, it drives the threaded block to move forward. At this time, the threaded block will drive the connecting rotating rod to move forward, and at the same time drive the extrusion roller to move forward and roll. When the extrusion roller moves, it will move from the high position to the low position of the support plate. At this time, the support plate can be extruded. The extruded support plate can rotate upward through the rotation between the rotating shaft and the inner wall of the limiting groove until the support plate moves to a state flush with the subway floor, and then the wheelchair can be pushed out. At the same time of moving, the connecting rotating rod will also drive the support slider to move on the inner wall of the sliding groove. Through the support slider, the pressure exerted on the wheelchair can be supported, improving the service life and the stability during use.

[0017] In this utility model, the rotating sleeve is rotated to drive the limiting rod to rotate upward, and then the wheelchair is pushed into it and the rotating sleeve is reset, so as to play a role in limiting and protecting the patient on the wheelchair. When it is necessary to adjust the limiting range of the limiting rod, the pull plate is pulled to drive the sliding column to move outwards, and at the same time the pull plate will drive the spring to stretch. At this time, the sliding column will be disengaged from the positioning hole opened on the outer wall of the limiting rod. Then, the limiting rod is pulled to move inside the rotating sleeve, and thus the limiting range of the limiting rod can be adjusted. After moving to the appropriate position, the pull plate is released, and the spring rebounds to drive the sliding column to insert into the positioning hole.

[0018] The following further describes in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Description of the Drawings

[0019] In the drawings:

[0020] Figure 1 is the schematic diagram of the overall structure of the present utility model;

[0021] Figure 2 is the schematic diagram of the internal sectional structure of the present utility model;

[0022] Figure 3 is the schematic diagram of the separated structure of the first limiting mechanism of the present utility model;

[0023] Figure 4 is the schematic diagram of the second limiting mechanism of the present utility model.

[0024] In the figure: 1, subway floor; 2, carriage; 31, first limiting mechanism; 311, motor; 312, threaded rod; 313, threaded block; 314, connecting rotating rod; 315, extrusion roller; 316, rotating chute; 317, rotating shaft; 318, support plate; 319, support slider; 3110, chute; 32, second limiting mechanism; 321, sliding sleeve; 322, limiting rod; 323, limiting plate; 324, fixed block; 325, sliding column; 326, pulling plate; 327, spring. Specific implementation manner

[0025] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the following will clearly and completely describe the technical solutions in the embodiments in conjunction with the accompanying drawings in the embodiments of the present utility model. The following embodiments are used to illustrate the present utility model.

[0026] As Figures 1 to 4 shown, a wheelchair limiting device for a subway carriage includes a subway floor 1, a carriage 2 fixedly connected to the top end of the subway floor 1, a first limiting mechanism 31 is provided on the subway floor 1, and a second limiting mechanism 32 is opened on the outer wall of the carriage 2. The first limiting mechanism 31 includes a motor 311. A placement groove is opened at the top end of the subway floor 1, and the outer wall of the motor 311 is fixedly connected in this placement groove. The output end of the motor 311 is fixedly connected with a threaded rod 312. A threaded block 313 is threadedly connected to the outer wall of the threaded rod 312. A connecting rotating rod 314 is rotatably connected to the outer wall of the threaded block 313 through a bearing. The outer wall of the end of the connecting rotating rod 314 away from the bearing is rotatably connected with an extrusion roller 315. A limiting groove is opened at the top end of the subway floor 1, and a rotating chute 316 is opened on the inner wall of this limiting groove. The outer wall of the end of the connecting rotating rod 314 away from the extrusion roller 315 is movably connected to the inner wall of this rotating chute 316. The top end of the extrusion roller 315 contacts a support plate 318. One end of the support plate 318 is fixedly connected with a rotating shaft 317. A rotating hole is opened on the inner wall of the limiting groove opened at the top end of the subway floor 1, and the outer wall of the rotating shaft 317 is rotatably connected to the inner wall of this rotating hole. A communicating cavity is opened inside the subway floor 1, a chute 3110 is opened at the bottom end of the inner wall of this communicating cavity, a support slider 319 is slidably connected to the inner wall of the chute 3110, and the outer wall of the connecting rotating rod 314 movably penetrates through the outer wall of the support slider 319.

[0027] Furthermore, the number of the support plates 318 is two. The support plates 318 are distributed symmetrically left and right on the inner wall of the limiting groove opened at the top end of the subway floor 1. The initial state of the support plates 318 is an inclined state, so that the two wheels of the wheelchair can be supported. At the same time, when in the inclined state, the wheelchair can slide into the limiting groove to complete the limiting operation.

[0028] Further, the inner walls of the rotating chute 316 and the chute 3110 are respectively in close fit with the outer walls of the connecting rotating rod 314 and the supporting slider 319, so as to improve the stability of the connecting rotating rod 314 when rotating and moving on the inner wall of the rotating chute 316, and at the same time improve the stability of the supporting slider 319 during the moving process, thereby improving the smoothness during the unlocking operation.

[0029] The second limiting mechanism 32 includes a sliding sleeve 321 rotatably connected to the outer wall of the carriage 2. A limiting rod 322 is slidably connected to the inner wall of the sliding sleeve 321. A limiting plate 323 is fixedly connected to the outer wall of the carriage 2. The limiting rod 322 is in sliding contact with the top end of the limiting plate 323. A fixed block 324 is fixedly connected to the outer wall of the sliding sleeve 321. A sliding hole communicating with the inner wall of the sliding sleeve 321 is formed in the outer wall of the fixed block 324. A sliding column 325 is slidably connected to the inner wall of the sliding hole. One end of the sliding column 325 away from the sliding hole is fixedly connected to a pulling plate 326. A spring 327 is fixedly connected to one end of the pulling plate 326 close to the sliding column 325. The other end of the spring 327 away from the pulling plate 326 is fixedly connected to the outer wall of the fixed block 324.

[0030] Further, a plurality of positioning holes are formed in the outer wall of the limiting rod 322. The inner walls of the positioning holes are respectively in close fit with the outer wall of the sliding hole formed in the outer wall of the fixed block 324 and the inner and outer walls of the sliding column 325, so as to improve the stability of the sliding column 325 during the positioning operation and prevent shaking.

[0031] Further, the inner wall of the sliding sleeve 321 is in close fit with the outer wall of the limiting rod 322, so as to ensure the fitting stability between the limiting rod 322 and the sliding sleeve 321, thereby improving the stability of the limiting rod 322 during the limiting and protecting function.

[0032] The implementation principle of the wheelchair limiting device for a subway carriage in this embodiment is as follows: The wheelchair is directly pushed into the limiting groove formed at the top end of the subway floor 1, and the wheelchair can be limited. When it is necessary to unlock the limit and push out the wheelchair, the motor 311 can be started, and its output end drives the threaded rod 312 to rotate. When the threaded rod 312 rotates, it drives the threaded block 313 to move forward. At this time, the threaded block 313 will drive the connecting rotating rod 314 to move forward, and at the same time drive the pressing roller 315 to move forward and roll. When the pressing roller 315 moves, it will move from the high position to the low position of the support plate 318. At this time, the support plate 318 can be pressed. The pressed support plate 318 can rotate upward through the rotation between the rotating shaft 317 and the inner wall of the limiting groove until the support plate 318 moves to a state flush with the subway floor 1, and then the wheelchair can be pushed out. During the movement, the connecting rotating rod 314 will also drive the supporting slider 319 to move on the inner wall of the chute 3110. Through the supporting slider 319, the pressure exerted on the wheelchair can be supported, improving the service life and the use smoothness.

[0033] Before the wheelchair is pushed into the limiting groove, rotate the sliding sleeve 321 to drive the limiting rod 322 to rotate upward, and then push the wheelchair into it and then reset the sliding sleeve 321, so as to play a limiting and protective role for the patient on the wheelchair. When it is necessary to adjust the limiting range of the limiting rod 322, pull the pull plate 326 to drive the sliding column 325 to move outwards. At the same time, the pull plate 326 will drive the spring 327 to stretch. At this time, the sliding column 325 will be released from the positioning hole opened on the outer wall of the limiting rod 322. After that, pull the limiting rod 322 to move inside the sliding sleeve 321, so as to adjust the limiting range of the limiting rod 322. After moving to the appropriate position, release the pull plate 326, and the spring 327 rebounds to drive the sliding column 325 to insert into the positioning hole.

Claims

1. A wheelchair limiting device for a subway carriage, comprising a subway floor (1); The carriage (2) is fixedly connected to the top of the subway floor (1), characterized in that: The subway floor (1) is provided with a first limiting mechanism (31), the outer wall of the carriage (2) is provided with a second limiting mechanism (32), and the first limiting mechanism (31) comprises a motor (311): The top of the subway floor (1) is provided with a placement groove, the outer wall of the motor (311) is fixedly connected to the placement groove, the output end of the motor (311) is fixedly connected to a threaded rod (312), the outer wall of the threaded rod (312) is threadedly connected to a threaded block (313), the outer wall of the threaded block (313) is rotatably connected to a connecting rod (314) through a bearing, the outer wall of the connecting rod (314) away from the bearing is rotatably connected to an extrusion roller (315), the top of the subway floor (1) is provided with a limiting groove, the inner wall of the limiting groove is provided with a rotation slide groove (316), the connecting rod (314) is away from the extrusion roller (315) The outer wall at one end is movably connected to the inner wall of the rotating slide groove (316); the top end of the squeezing roller (315) contacts a support plate (318); one end of the support plate (318) is fixedly connected to a rotating shaft (317); the inner wall of the limiting groove formed at the top of the subway floor (1) is provided with a rotating hole; the outer wall of the rotating shaft (317) is rotatably connected to the inner wall of the rotating hole; a connecting cavity is formed inside the subway floor (1); a slide groove (3110) is formed at the bottom end of the inner wall of the connecting cavity; the inner wall of the slide groove (3110) is slidably connected to a supporting slider (319); the outer wall of the connecting rotating rod (314) movably penetrates the outer wall of the supporting slider (319).

2. A subway car wheelchair limiting device according to claim 1, characterized in that: The second limiting mechanism (32) comprises a sliding sleeve (321) rotatably connected to the outer wall of the carriage (2); the inner wall of the sliding sleeve (321) is slidably connected to a limiting rod (322); the outer wall of the carriage (2) is fixedly connected to a limiting plate (323); the limiting rod (322) slidably contacts the top of the limiting plate (323); the outer wall of the sliding sleeve (321) is fixedly connected to a fixing block (324); the outer wall of the fixing block (324) is provided with a sliding hole connected to the inner wall of the sliding sleeve (321); the inner wall of the sliding hole is slidably connected to a sliding column (325); the sliding column (325) is fixedly connected to a pull plate (326) at one end away from the sliding hole; the pull plate (326) is fixedly connected to a spring (327) at one end close to the sliding sleeve (325); the spring (327) is fixedly connected to the outer wall of the fixing block (324) at one end away from the pull plate (326).

3. The subway car wheelchair limiting device according to claim 1, characterized in that: There are two support plates (318), which are distributed in a bilaterally symmetrical structure on the inner wall of a limiting groove opened at the top of the subway floor (1), and the initial state of the support plates (318) is an inclined state.

4. The subway car wheelchair limiting device according to claim 1, characterized in that: The inner walls of the rotating slide groove (316) and the slide groove (3110) are respectively fitted with the outer walls of the connecting rotating rod (314) and the supporting sliding block (319).

5. The subway car wheelchair limiting device according to claim 2, characterized in that: The outer wall of the limiting rod (322) is provided with a plurality of positioning holes, and the inner walls of the positioning holes are respectively fitted with the inner and outer walls of the sliding holes and the sliding columns (325) provided on the outer wall of the fixing block (324).

6. The subway car wheelchair limiting device according to claim 2, characterized in that: The inner wall of the sliding sleeve (321) fits snugly with the outer wall of the limiting rod (322).

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