Device and method for adjusting floor at door of railway vehicle

Abstract

The invention discloses a device and a method for adjusting a floor at a door of a railway vehicle. The adjusting device comprises a vehicle door floor (1) and a carriage floor (2), and the inner side of the vehicle door floor (1) is hinged to the outer side of the carriage floor (2); a first-stage adjusting mechanism and a second-stage adjusting mechanism are mounted below the floor at the vehicle door; the first-stage adjusting mechanism comprises a connecting rod (5), a connecting body (7), a motor base (4) and a first motor (3), an output shaft of the first motor is in threaded connection with the connecting body, and when the first motor rotates, the first motor drives the connecting body and the floor at the automobile door to rotate around a rotating shaft of the first motor; the second-stage adjusting mechanism comprises a supporting plate, a telescopic plate, a rack and a second motor, a worm is installed at the end of an output shaft of the second motor, the worm is in threaded connection with the rack, when the second motor rotates, the worm drives the rack, and the rack drives the telescopic plate to extend outwards or retract inwards. The height of the floor at the door of the railway vehicle and the gap between the door and the platform can be adjusted.

Description

Technical Field

[0001] The invention relates to a rail transit vehicle, and in particular to a floor adjustment device and an adjustment method at a door of a rail vehicle. Background Art

[0002] During operation, rail trains need to stop at different stations to pick up and drop off passengers. Since the platform heights of different stations may be different, and the horizontal width of the platform edge from the longitudinal center line of the track may also be different, different height differences are generated between the carriage floor and the platform, and different gaps are generated between the vehicle doors and the platform edge, causing inconvenience for passengers when entering and exiting the doors. Especially for those with limited mobility, the inconvenience caused by the height difference between the floor and the platform and the gap between the door and the platform is more serious, which may lead to safety problems. At the same time, the inconvenience caused by the height difference between the floor and the platform and the gap between the door and the platform also prolongs the time required for passengers to get on and off the train. The more platforms the train passes, the longer it takes, which in turn increases the operating time required for each train trip.

[0003] Therefore, eliminating the height difference between the carriage floor and the platform and the gap between the door and the platform is of great significance to effectively solve the above problems.

[0004] At present, rail transit passenger vehicles use air spring suspension devices mainly based on air sources. Although the train can adjust the floor height by lifting the car as a whole through the air spring suspension device, this air source-controlled adjustment system requires more pneumatic control units, has a more complex structural layout, and consumes more energy when lifting the car as a whole. Summary of the invention

[0005] The technical problem to be solved by the present invention is that, in view of the problem that there is a height difference between the floor of a rail vehicle carriage and the platform, and there is a gap between the door and the platform, which makes it inconvenient to enter and exit the door, the present invention provides a floor adjustment device and an adjustment method at the door of a rail vehicle, which can realize floor height adjustment at the door of the rail vehicle and adjustment of the gap between the door and the platform.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A rail vehicle door floor adjustment device comprises a door floor and a carriage floor, and its structural features are:

[0008] The inner side of the floor at the door is hinged to the outer side of the compartment floor;

[0009] A first-stage adjustment mechanism and a second-stage adjustment mechanism are installed under the floor at the vehicle door;

[0010] The first-stage adjustment mechanism includes a connecting rod with one end mounted on the bottom surface of the floor at the vehicle door, a connecting body mounted on the other end of the connecting rod, a motor seat fixedly mounted on the vehicle chassis, and a first motor mounted on the motor seat. The output shaft of the first motor is provided with threads, and the connecting body is threadedly connected with the output shaft. When the first motor rotates, the first motor drives the connecting body, and the connecting body drives the floor at the vehicle door to rotate around its rotation axis.

[0011] The second-stage adjustment mechanism includes a support plate installed under the floor at the vehicle door, a telescopic plate installed between the floor at the vehicle door and the support plate, a rack fixedly connected to the telescopic plate, and a second motor installed under the vehicle floor. A worm is installed at the end of the output shaft of the second motor, and the worm is threadedly connected to the rack. When the second motor rotates, the worm drives the rack, and the rack drives the telescopic plate to extend outward or retract inward.

[0012] Preferably, the floor adjustment device at the door of a rail vehicle further comprises another connecting rod installed between the vehicle underframe and the connecting body.

[0013] Preferably, the first-stage adjustment mechanism is respectively arranged on both sides of the floor at the vehicle door.

[0014] Preferably, both ends of the connecting rod are respectively hingedly connected to the floor at the door or the vehicle chassis and the connecting body, and the first motor is hingedly connected to the motor seat.

[0015] Preferably, a movable groove is provided on the support plate, and the rack is placed in the movable groove.

[0016] Based on the same inventive concept, the present invention also provides a method for adjusting the floor adjustment device at the door of a rail vehicle, which comprises:

[0017] When the train stops at each platform, the train control system obtains the height difference between the car floor and the platform and the gap between the door and the platform;

[0018] After the door is opened, the train control system controls the rotation of the first motor of the first-stage adjustment mechanism according to the height difference between the car floor and the platform. When the height of the car floor is lower than the platform height, the control system controls the first motor to rotate forward, so that the connecting body moves toward the first motor, and the connecting rod moves accordingly, thereby pushing the floor at the door to rotate upward by a specific angle with the rotation axis as the center. Subsequently, the train control system controls the second motor of the second-stage adjustment mechanism to rotate forward according to the gap between the car door and the platform, and the worm drives the rack to move forward, so that the telescopic plate extends out and abuts against the edge of the platform, and finally makes the floor at the door consistent with the platform height; conversely, when the height of the car floor is higher than the platform height, the train control system controls the first motor of the first-stage adjustment mechanism to reverse, so that the connecting body moves away from the first motor, and the connecting rod moves accordingly, thereby pulling the floor at the door to rotate downward by a specific angle with the rotation axis as the center. Subsequently, the train control system controls the second motor of the second-stage adjustment mechanism to rotate forward according to the gap between the car door and the platform, and the worm drives the rack to move forward, so that the telescopic plate extends out and abuts against the edge of the platform, and finally makes the floor at the door consistent with the platform height.

[0019] Before the door is closed, the train control system controls the second motor of the second-stage adjusting mechanism to reverse, and the worm drives the rack to move backward to retract the telescopic plate. Then the train control system controls the first motor of the first-stage adjusting mechanism to rotate, so that the floor at the door is at the same height as the floor of the carriage, and finally the door is closed.

[0020] The door floor adjustment device of the present invention is arranged at the door, separating the door floor from the carriage floor, and controlling the first motor to drive the door floor to move up and down, thereby eliminating the height difference between the carriage floor and the platform. Then, controlling the second motor to drive the worm to rotate to extend the telescopic plate attached to the door floor, thereby eliminating the gap between the door and the platform.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] (1) The door floor adjustment device of the present invention is driven by a motor, does not require a pneumatic control unit, has a simple structure and layout, and can realize door floor height adjustment on vehicles without an air source.

[0023] (2) The door floor adjustment device of the present invention can adjust the door floor height without lifting the entire vehicle compartment, so a high-power lifting device is not required and energy consumption is low.

[0024] (3) The floor adjustment device of the present invention only needs to control the floor adjustment device at the door on the same side of the carriage to achieve the function of eliminating the height difference between the floor at the door and the platform and the gap between the door and the platform. The device is simple, easy to control and highly efficient.

[0025] (4) The floor adjustment device of the present invention is simple and easy to operate and maintain, with a short maintenance period and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0027] Figure 1 It is a structural schematic diagram of the first-stage adjustment mechanism of the floor adjustment device at the door of a rail vehicle of the present invention.

[0028] Figure 2 for Figure 1 Enlarged view of point A.

[0029] Figure 3 It is a structural schematic diagram of the second-stage adjustment mechanism of the floor adjustment device at the door of a rail vehicle of the present invention.

[0030] Figure 4 for Figure 3 Enlarged view of point B.

[0031] In the figure: 1, floor at the door, 2, floor of the compartment, 3, first motor, 4, motor seat, 5, connecting rod, 6, connecting rod seat, 7, connecting body, 8, door frame, 9, bottom frame crossbeam, 11, rotating shaft, 21, bearing seat;

[0032] a1, motor shaft seat, a2, supporting plate, a3, telescopic plate, a4, second motor, a21, moving groove, a31 rack, a41, base, a42, motor shaft, a43 worm. DETAILED DESCRIPTION

[0033] The present invention is further described below in conjunction with specific preferred embodiments, but the protection scope of the present invention is not limited thereby.

[0034] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] See also Figure 1 - Figure 4 As shown, an embodiment of the floor adjustment device for a rail vehicle door of the present invention comprises a first-stage adjustment mechanism and a second-stage adjustment mechanism.

[0037] Figure 1 , Figure 2 The first-level adjustment mechanism is shown. The first-level adjustment mechanism is used to adjust the height of the door floor 1. The first-level adjustment mechanism consists of the door floor 1, the car floor 2, the first motor 3, the motor seat 4, the connecting rod 5, the connecting rod seat 6, the connector 7, the door frame 8, the chassis crossbeam 9, the rotating shaft 11, the bearing seat 21, etc. Among them, the door floor 1 is separated from the car floor 2, the door floor 1 is provided with a rotating shaft 11 at the separation portion from the car floor 2, the car floor 2 is provided with a bearing seat 21 at the separation portion from the door floor 1, and the rotating shaft 11 of the door floor 1 is embedded in the bearing seat 21 of the car floor 2, so the door floor 1 can rotate up and down with the rotating shaft 11 as the center.

[0038] A connecting rod seat 6 is provided on both sides of the end of the floor 1 at the door near the door frame 8, another connecting rod seat 6 is provided on both sides of the lower cover plate of the chassis cross beam 9 below the floor 1 at the door at positions corresponding to the connecting rod seat 6 on the floor, a motor seat 4 is provided on both sides of the lower cover plate of the chassis cross beam 9 near the center of the car, and a base 31 of the first motor 3 is hingedly mounted on the motor seat 4 through a round pin, so that the first motor 3 can rotate around the center of the round pin. A thread is provided at one end of the motor shaft 32, and a threaded hole is provided in the middle of the connecting body 7, and the connecting body 7 is connected to the thread at one end of the motor shaft 32 through its threaded hole. Round holes are provided on the upper and lower parts of the connecting body 7, and the upper connecting rod 5 connects the upper round hole of the connecting body 7 with the upper round hole of the connecting rod seat 6 of the floor 1 at the door through a round pin, and the lower connecting rod 5 connects the lower round hole of the connecting body 7 with the round hole of the connecting rod seat 6 on the lower cover plate of the chassis cross beam 9 through a round pin, so that the two ends of the two connecting rods 5 can rotate relative to the connecting body 7 or the connecting rod seat 6.

[0039] like Figure 3 , Figure 4The second-stage adjustment mechanism is shown, and the second-stage adjustment mechanism is used to adjust the gap between the door and the platform. The second-stage adjustment mechanism is composed of a door floor 1, a support plate a2, a telescopic plate a3, a second motor a4, a motor shaft seat a1, etc. The support plate a2 is fixed under the floor 1 at the door, a gap is left between the support plate a2 and the floor 1 at the door, and moving grooves a21 are provided on both sides of the support plate a2, the telescopic plate a3 is placed in the gap formed between the support plate a2 and the floor 1 at the door, and a rack a31 is installed on the telescopic plate a3, the rack a31 protrudes through the moving groove a21 of the support plate a2, the base a41 of the second motor a4 is fixed under the floor 1 at the door, the head of the motor shaft a42 is installed in the circular hole of the motor shaft seat a1, the motor shaft seat a1 is fixed on the support plate a2, and a worm a43 is provided near the head position of the motor shaft a42, the worm a43 cooperates with the rack a31 on the telescopic plate a3, when the motor shaft a42 rotates, the worm a43 drives the rack a31 to move, so that the telescopic plate a3 moves telescopically in the gap between the support plate a2 and the floor 1 at the door.

[0040] like Figure 2 and Figure 4 As shown, when the door floor adjustment device of the present invention is arranged on both sides of the vehicle compartment, the structural components on the right side of the vehicle compartment are the same as the structural components on the left side, and are arranged symmetrically on the left and right sides in the same connection manner as described above.

[0041] The door floor adjusting device of the present invention is arranged at each door of the carriage, specifically at the floor close to the door and below the door. When the train stops at the platform, the door floor adjusting device on the same side of the carriage is activated to adjust the floor height at the door to be consistent with the platform height, and eliminate the gap between the door and the platform.

[0042] The operating principle of the two-stage adjustment mechanism of the door floor adjustment device of the present invention is:

[0043] When the train stops at each platform, the train control system first obtains the height difference between the carriage floor 2 and the platform and the clearance between the door and the platform;

[0044] After the door is opened, the train control system controls the first motor 3 of the first-stage adjustment mechanism of the floor adjustment device at the door to rotate according to the height difference between the car floor 2 and the platform. When the height of the car floor 2 is lower than the platform height, the control system controls the first motor 3 to rotate forward, so that the connecting body 7 moves toward the direction close to the first motor, and the connecting rod 5 moves accordingly, thereby pushing the floor 1 at the door to rotate upward at a specific angle around the rotating shaft 11. Then, the control system controls the second motor a4 of the second-stage adjustment mechanism to rotate forward according to the gap between the car door and the platform, and the worm a43 on the motor shaft a42 drives the rack a31 to move forward, so that the telescopic plate a3 extends out to the platform. The control system controls the first motor 3 of the first-stage regulating mechanism to reverse, so that the connecting body 7 moves away from the first motor, and the connecting rod 5 moves accordingly, thereby pulling the floor 1 at the door to rotate downward at a specific angle with the rotating shaft 11 as the center, and then the control system controls the second motor a4 of the second-stage regulating mechanism to rotate forward according to the gap between the door and the platform, and the worm a43 on the motor shaft a42 drives the rack a31 to move forward, so that the telescopic plate a3 extends out and touches the edge of the platform, and finally the floor 1 at the door is consistent with the platform height;

[0045] Before the door is closed, the control system controls the second motor a4 of the second-stage adjusting mechanism to reverse, and the worm a43 on the motor shaft a42 drives the rack a31 to move backward, so that the telescopic plate a3 is retracted, and then the control system controls the first motor 3 of the first-stage adjusting mechanism to rotate, so that the floor 1 at the door is at the same height as the car floor 2, and finally the door is closed.

[0046] The above is only a specific implementation scheme of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the art can make many possible changes and modifications to the technical scheme of the present invention by using the technical content disclosed above without departing from the scope of the technical scheme of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the technical scheme of the present invention should fall within the protection scope of the technical scheme of the present invention.

Claims

1. A rail vehicle door floor adjustment device, comprising a door floor and a carriage floor, characterized in that: The inner side of the floor at the door is hinged to the outer side of the compartment floor; A first-stage adjustment mechanism and a second-stage adjustment mechanism are installed under the floor at the vehicle door; The first-stage adjustment mechanism includes a connecting rod with one end mounted on the bottom surface of the floor at the vehicle door, a connecting body mounted on the other end of the connecting rod, a motor seat fixedly mounted on the vehicle chassis, and a first motor mounted on the motor seat. The output shaft of the first motor is provided with threads, and the connecting body is threadedly connected with the output shaft. When the first motor rotates, the first motor drives the connecting body, and the connecting body drives the floor at the vehicle door to rotate around its rotation axis. The second-stage adjustment mechanism includes a support plate installed under the floor at the vehicle door, a telescopic plate installed between the floor at the vehicle door and the support plate, a rack fixedly connected to the telescopic plate, and a second motor installed under the vehicle floor. A worm is installed at the end of the output shaft of the second motor, and the worm is threadedly connected to the rack. When the second motor rotates, the worm drives the rack, and the rack drives the telescopic plate to extend outward or retract inward.

2. The floor adjustment device for a rail vehicle door according to claim 1, characterized in that: Also included is another connecting rod installed between the vehicle underframe and the connecting body.

3. The floor adjustment device for a rail vehicle door according to claim 1, characterized in that: The first-stage adjustment mechanism is respectively arranged on both sides of the floor at the vehicle door.

4. The floor adjustment device for a rail vehicle door according to claim 1 or 2, characterized in that: The two ends of the connecting rod are respectively hingedly connected to the floor at the door or the vehicle underframe and the connecting body, and the first motor is hingedly connected to the motor seat.

5. The floor adjustment device for a rail vehicle door according to claim 1, characterized in that: The support plate is provided with a moving groove, and the rack is placed in the moving groove.

6. A method for adjusting the floor adjustment device at a door of a rail vehicle according to any one of claims 1 to 5, characterized in that: When the train stops at each platform, the train control system obtains the height difference between the car floor and the platform and the gap between the door and the platform; After the door is opened, the train control system controls the rotation of the first motor of the first-stage adjustment mechanism according to the height difference between the car floor and the platform. When the height of the car floor is lower than the platform height, the control system controls the first motor to rotate forward, so that the connecting body moves toward the first motor, and the connecting rod moves accordingly, thereby pushing the floor at the door to rotate upward by a specific angle with the rotation axis as the center. Subsequently, the train control system controls the second motor of the second-stage adjustment mechanism to rotate forward according to the gap between the car door and the platform, and the worm drives the rack to move forward, so that the telescopic plate extends out and abuts against the edge of the platform, and finally makes the floor at the door consistent with the platform height; conversely, when the height of the car floor is higher than the platform height, the train control system controls the first motor of the first-stage adjustment mechanism to reverse, so that the connecting body moves away from the first motor, and the connecting rod moves accordingly, thereby pulling the floor at the door to rotate downward by a specific angle with the rotation axis as the center. Subsequently, the train control system controls the second motor of the second-stage adjustment mechanism to rotate forward according to the gap between the car door and the platform, and the worm drives the rack to move forward, so that the telescopic plate extends out and abuts against the edge of the platform, and finally makes the floor at the door consistent with the platform height. Before the door is closed, the train control system controls the second motor of the second-stage adjusting mechanism to reverse, and the worm drives the rack to move backward to retract the telescopic plate. Then the train control system controls the first motor of the first-stage adjusting mechanism to rotate, so that the floor at the door is at the same height as the floor of the carriage, and finally the door is closed.

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