Rail vehicle and door leaf lower locking device thereof

Abstract

The application discloses a rail vehicle and a door leaf lower locking device thereof, which comprises a base, a guide shaft, a sliding block, a roller, a connecting arm, a driving arm, a limiting piece and a driving mechanism; the guide shaft is arranged on the base; the sliding block is in sliding connection with the guide shaft; the roller is arranged on the sliding block and is used for being assembled with a guide rail of a door leaf; the connecting arm is in rotary connection with the sliding block through a second pin; the driving arm is in rotary connection with the guide shaft through a pin shaft, and the driving arm is in rotary connection with the connecting arm through a first pin; when the driving arm is rotated forward to a position where the center of the first pin is lower than a line connecting the center of the second pin and the center of the pin shaft, the door leaf is in a plug-in state, and the limiting piece limits the connecting arm. The application has the advantages of compact structure, small size, realization of lower locking of the door leaf, reliable locking, small occupied space, great improvement of the safety of the door system locking, effective guarantee of the personal safety of passengers and guarantee of the orderly operation of a train.

Description

Technical Field

[0001] This invention relates to the field of rail transit equipment technology, and more particularly to a rail vehicle and its lower door locking device. Background Technology

[0002] As a crucial component of rail vehicles, passenger compartment doors play a vital role. During operation, to ensure safe vehicle operation, the doors must lock reliably. Existing rail vehicle sliding door systems often employ a top-drive mechanism to open and close the door panels, with only a follow-up guide component installed at the bottom of the door panel, lacking an independent locking device. Consequently, the bottom of the door panel is prone to swaying or shaking during vehicle movement. Summary of the Invention

[0003] The purpose of this invention is to provide a locking device for the lower part of a rail vehicle door, which solves the technical problem that existing doors only have a sliding door device at the top, which is prone to swaying or shaking when the vehicle moves.

[0004] To achieve the above-mentioned objectives, the rail vehicle door lower locking device provided by the present invention adopts the following technical solution:

[0005] A locking device for the lower part of a rail vehicle door, comprising:

[0006] A base, on which a guide shaft is provided;

[0007] The slider is slidably connected to the guide shaft;

[0008] A roller is mounted on the slider and is used to assemble with the guide rail of the door leaf;

[0009] A connecting arm, which is rotatably connected to the slider via a second pin;

[0010] The drive arm is rotatably connected to the guide shaft via a pin, and the drive arm is rotatably connected to the connecting arm via a first pin;

[0011] The limiting component is located on the base;

[0012] The driving mechanism is used to drive the driving arm to rotate forward until the door leaf is in an inserted state when the center of the first pin is lower than the line connecting the center of the second pin and the center of the pin shaft, and the limiting member restricts the connecting arm; and to drive the driving arm to rotate in the opposite direction until the door leaf is in an out state when the center of the first pin is higher than the line connecting the center of the second pin and the center of the pin shaft.

[0013] As described above, the lower locking device for a rail vehicle door includes a base portion and a support portion located on the base portion. The guide shaft is located on the top surface of the support portion, and the cross-section of the base portion perpendicular to the axis of the guide shaft is convex. The slider includes a sliding portion, which is provided with a sliding groove and an opening groove. The sliding groove is in sliding contact with the guide shaft, the two groove walls of the opening groove are in sliding contact with the two sides of the support portion, and the lower surface of the sliding portion is in sliding contact with the upper surface of the base portion.

[0014] As described above, in the lower locking device of the rail vehicle door, the planes containing the two sides of the bearing part intersect, and the planes containing the two groove walls of the opening groove intersect.

[0015] As described above, the lower locking device of the rail vehicle door has a limiting component mounting part on the base part for mounting a limiting component, and the limiting component mounting part and the base part are T-shaped.

[0016] As described above, in the lower locking device of the rail vehicle door, the drive arm is provided with a mounting plate at a certain angle to the drive arm, the mounting plate is located between the pin and the first pin, the mounting plate is provided with a connecting shaft, and the drive mechanism drives the connecting shaft.

[0017] As described above, the lower locking device for the door of a rail vehicle includes a drive arm comprising two opposing L-shaped drive sections and a connecting section. The first end of each L-shaped drive section is rotatably connected to the guide shaft via a pin, and the second ends of the two L-shaped drive sections are connected via the connecting section. The corner of each L-shaped drive section is rotatably connected to the connecting arm via a first pin.

[0018] As described above, the lower locking device for the door of a rail vehicle includes a connecting arm comprising two opposing L-shaped first connecting parts and second connecting parts. The first end of the L-shaped first connecting part is connected to the drive arm via a first pin, and the second ends of the two L-shaped first connecting parts are connected via the second connecting parts. The slider includes a U-shaped connecting arm assembly, and the corner of the L-shaped first connecting part is rotatably connected to the U-shaped connecting arm assembly of the slider via a second pin.

[0019] The lower locking device for the rail vehicle door includes a slider comprising a cantilever for mounting the roller, the cantilever protruding from the sliding portion.

[0020] As described above, in the lower locking device of the rail vehicle door, the roller has a roller mounting seat, the roller mounting seat is connected to the cantilever by a connecting block, the upper surface of the cantilever and the upper surface of the roller mounting seat are higher than the upper surface of the connecting block, and the upper surfaces of the roller mounting seat, the connecting block and the roller mounting seat form a groove.

[0021] A rail vehicle includes a door panel and the aforementioned lower locking device for the rail vehicle door panel, and a sliding door device is also provided on the upper part of the door panel.

[0022] Compared with the prior art, the advantages and positive effects of the present invention are as follows: The lower locking device of the rail vehicle door of the present invention includes a base, a guide shaft, a slider, a roller, a connecting arm, a drive arm, a limiting member, and a drive mechanism; the guide shaft is located on the base; the slider is slidably connected to the guide shaft; the roller is mounted on the slider and is used to assemble with the guide rail of the door; the connecting arm is rotatably connected to the slider through a second pin; the drive arm is rotatably connected to the guide shaft through a pin shaft, and the drive arm is rotatably connected to the connecting arm through a first pin; the drive mechanism is used to drive the drive arm to rotate forward until the center of the first pin is lower than the line connecting the center of the second pin and the pin shaft, when the door is in the inserted state, and the limiting member restricts the connecting arm; and to drive the drive arm to rotate in the reverse direction until the center of the first pin is higher than the line connecting the center of the second pin and the pin shaft, when the door is in the inserted state. When the door is in the inserted state, the drive mechanism rotates the drive arm until the center of the first pin is below the line connecting the center of the second pin and the pivot. The forward rotation tendency of the drive arm is limited by the limiting component. Therefore, at this time, the drive arm is in a stable state, i.e., maintaining the locked state, ensuring the locking effect and guaranteeing that the lower part of the door is also locked. When the drive mechanism drives the drive arm to rotate in the opposite direction, the lock is released. This invention has a compact structure and small size, achieving locking of the lower part of the door. It has the advantages of reliable locking and small space occupation, greatly improving the security of the door system locking, effectively ensuring the personal safety of passengers, and ensuring the orderly operation of the train.

[0023] Other features and advantages of the present invention will become clearer after reading the detailed embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a locking device according to a specific embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the base and guide shaft in a specific embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the slider in a specific embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram illustrating the locking state and principle of the locking device in a specific embodiment of the present invention.

[0028] Figure 5 This is a schematic diagram of the locking state of the locking device in a specific embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the locking device in the open state according to a specific embodiment of the present invention.

[0030] Figure 7 This is a schematic diagram of the locking state of the locking device and the door guide rail in a specific embodiment of the present invention.

[0031] Figure 8 This is a schematic diagram of the locking device and the door guide rail in an open state according to a specific embodiment of the present invention. Detailed Implementation

[0032] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] like Figure 1-8 As shown, this embodiment proposes a locking device for the lower part of a rail vehicle door, including a base 1, a guide shaft 12, a slider 4, a roller 7, a connecting arm 3, a drive arm 2, a limiting member 9, a pin 5, a first pin 6, and a second pin 10.

[0034] The base 1 is a fixed component that supports the entire locking device. The base 1 is mounted on the vehicle body, and a guide shaft 12 is provided on the base 1. In this embodiment, the guide shaft 12 is cylindrical; however, in other embodiments, the guide shaft 12 can also be a prism. The slider 4 is slidably connected to the guide shaft 12.

[0035] Specifically, the base 1 includes a base portion 111 and a support portion 112 located on the base portion 111. The guide shaft 12 is located on the top surface of the support portion 112, and the cross section of the base 1 perpendicular to the axis of the guide shaft 12 is convex. The base 1 is also used to support the slider 4.

[0036] The length of the guide shaft 12 is greater than the length of the base 1, and one end of the guide shaft 12 is flush with one end of the base 1.

[0037] The slider 4 includes a sliding part 41, on which a groove 411 and an opening groove 412 are provided. The groove 411 slides in contact with the guide shaft 12, the two groove walls 4121 of the opening groove 412 slide in contact with the two side surfaces 1121 of the supporting part 112, and the lower surface 413 of the sliding part 41 slides in contact with the upper surface 1111 of the base part 111. This arrangement enables the slider 4 to slide stably and smoothly on the base 1.

[0038] For ease of processing and installation, the planes containing the two sides 1121 of the support portion 112 intersect, and the distance between the two sides 1121 of the support portion 112 gradually decreases from bottom to top. The planes containing the two groove walls 4121 of the opening groove 412 intersect, and the distance between the two groove walls 4121 of the opening groove 412 gradually increases in the direction from the axis of the guide shaft to the generatrix.

[0039] The slider 4 includes a cantilever 43 for mounting the roller 7, the cantilever 43 protruding from the sliding part 41.

[0040] Roller 7 is mounted on slider 4 and is used for assembly with the door panel guide rail.

[0041] The roller 7 has a roller mounting seat 71, which is connected to the cantilever 43 by a connecting block 44. The upper surface of the cantilever 43 and the upper surface of the roller mounting seat 71 are higher than the upper surface of the connecting block 44. The roller mounting seat 71, the connecting block 44 and the upper surface of the roller mounting seat 71 form a groove.

[0042] The connecting arm 3 is rotatably connected to the slider 4 via the second pin 10.

[0043] Specifically, the connecting arm 3 includes two opposing L-shaped first connecting parts 31 and second connecting parts 32. The first end of the L-shaped first connecting part 31 is connected to the driving arm 2 through the first pin 6, and the second ends of the two L-shaped first connecting parts 31 are connected through the second connecting parts 32. The slider 4 includes a U-shaped connecting arm assembly part 42. The corner of the L-shaped first connecting part 31 is rotatably connected to the U-shaped connecting arm assembly part 42 of the slider 4 through the second pin 10.

[0044] The drive arm 2 is rotatably connected to the guide shaft 12 via the pin 5, and the drive arm 2 is rotatably connected to the connecting arm 3 via the first pin 6.

[0045] Specifically, the drive arm 2 includes two opposing L-shaped drive parts 21 and a connecting part 22. The first end of the L-shaped drive part 21 is rotatably connected to the guide shaft 12 via a pin 5. The second ends of the two L-shaped drive parts 21 are connected via the connecting part 22. The corner of the L-shaped drive part 21 is rotatably connected to the connecting arm 3 via a first pin 6.

[0046] The drive arm 2 is provided with a mounting plate 211 at a certain angle to the drive arm 2. The mounting plate 211 is located between the pin 5 and the first pin 6. The mounting plate 211 is provided with a connecting shaft 8. The drive mechanism drives the connecting shaft 8 to move up and down, thereby driving the drive arm 2 to rotate in the forward or reverse direction.

[0047] The limiting component 9 is located on the base 1.

[0048] Specifically, the base portion 111 is provided with a limit member mounting portion 113 for mounting the limit member 9, and the limit member mounting portion 113 and the base portion 111 are T-shaped.

[0049] The drive mechanism is used to rotate the drive arm 2 forward until the center of the first pin 6 is below the line connecting the center of the second pin 10 and the center of the pin shaft 5. At this point, the door is in the inserted state (closed state), and the limiting member 9 restricts the connecting arm 3, keeping it in the locked state. The external force acting on the door causes the drive arm 2 to tend to rotate forward. Because the limiting member 9 restricts the connecting arm 3, the drive arm 2 cannot rotate, thus ensuring the door is in the inserted state. Figure 7 As shown. The drive mechanism is also used to drive the drive arm 2 to rotate in the opposite direction until the center of the first pin 6 is higher than the line connecting the center of the second pin 10 and the center of the pin shaft 5, at which point the door is in the pushed-out state (open state), as shown. Figure 8 As shown.

[0050] When the door system is locked, the drive mechanism drives the drive arm 2 to rotate clockwise along the pin 5 via the connecting shaft 8, and drives the slider 4 to slide along the guide shaft 12 via the connecting arm 3.

[0051] When the door system is unlocked, the drive mechanism drives the drive arm 2 to rotate counterclockwise along the pin 5 via the connecting shaft 8, and drives the slider 4 to slide along the guide shaft 12 via the connecting arm 3.

[0052] This locking device works in conjunction with the door leaf guide rail, with roller 7 embedded within the door leaf guide rail. The mechanism works as follows: during the sliding action, roller 7 drives the door leaf to perform the sliding action; during the sliding action, the roller rolls within the door leaf guide rail to perform the sliding action.

[0053] The locking device in this embodiment is characterized by its simple and practical operation, high reliability, strong controllability, and small footprint. It is suitable for use in densely populated and complex environments such as rail transit vehicles.

[0054] This embodiment also proposes a rail vehicle, including a door panel and the aforementioned lower locking device for the rail vehicle door panel, and a sliding door device is also provided on the upper part of the door panel. The drive mechanism of the lower locking device can be linked with the drive mechanism of the upper sliding door device to achieve synchronous locking and unlocking.

[0055] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit them. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions claimed by the present invention.

Claims

1. A locking device for the lower part of a rail vehicle door, characterized in that, include: A base (1) is provided with a guide shaft (12), and the base (1) has an end face; The slider (4) is slidably connected to the guide shaft (12); A roller (7) is mounted on the slider (4) and is used to assemble with the guide rail of the door leaf; Connecting arm (3), which is rotatably connected to the slider (4) via a second pin (10); The drive arm (2) is rotatably connected to the guide shaft (12) via a pin (5), and the drive arm (2) is rotatably connected to the connecting arm (3) via a first pin (6); A limiting member (9) is located on the base (1); The drive mechanism is used to drive the drive arm (2) to rotate forward until the center of the first pin (6) is lower than the line connecting the center of the second pin (10) and the pin shaft (5) when the door leaf is in the inserted state, and the limiting member (9) restricts the connecting arm (3). In the inserted state, the end of the slider (4) away from the roller (7) does not protrude from the end face. When the drive arm (2) is rotated in the opposite direction until the center of the first pin (6) is higher than the line connecting the center of the second pin (10) and the pin (5), the door leaf is in the plugged-out state. In the plugged-out state, the slider moves away from the end face along the guide shaft (12). The drive arm (2) includes two opposing L-shaped drive parts (21) and a connecting part (22). The first end of the L-shaped drive part (21) is rotatably connected to the guide shaft (12) through a pin (5). The second ends of the two L-shaped drive parts (21) are connected through the connecting part (22). The corner of the L-shaped drive part (21) is rotatably connected to the connecting arm (3) through a first pin (6). The connecting arm (3) includes two opposing L-shaped first connecting parts (31) and second connecting parts (32). The first end of the L-shaped first connecting part (31) is connected to the driving arm (2) through a first pin (6), and the second ends of the two L-shaped first connecting parts (31) are connected through the second connecting parts (32). The slider (4) includes a U-shaped connecting arm assembly part (42). The corner of the L-shaped first connecting part (31) is rotatably connected to the U-shaped connecting arm assembly part (42) of the slider (4) through a second pin (10).

2. The locking device for the lower part of the door of a rail vehicle according to claim 1, characterized in that, The base (1) includes a base portion (111) and a support portion (112) located on the base portion (111). The guide shaft (12) is located on the top surface of the support portion (112). The cross section of the base (1) perpendicular to the axis of the guide shaft (12) is convex. The slider (4) includes a sliding portion (41). The sliding portion (41) is provided with a sliding groove (411) and an opening groove (412). The sliding groove (411) is in sliding contact with the guide shaft (12). The two groove walls (4121) of the opening groove (412) are in sliding contact with the two sides (1121) of the support portion (112). The lower surface (413) of the sliding portion (41) is in sliding contact with the upper surface (1111) of the base portion (111).

3. The locking device for the lower part of the rail vehicle door according to claim 2, characterized in that, The planes on the two sides (1121) of the bearing part (112) intersect, and the planes on the two groove walls (4121) of the opening groove (412) intersect.

4. The locking device for the lower part of the rail vehicle door according to claim 2, characterized in that, The base portion (111) is provided with a limiting member mounting portion (113) for mounting the limiting member (9), and the limiting member mounting portion (113) and the base portion (111) are T-shaped.

5. The locking device for the lower part of the door of a rail vehicle according to claim 1, characterized in that, The drive arm (2) is provided with a mounting plate (211) at a certain angle to the drive arm (2). The mounting plate (211) is located between the pin (5) and the first pin (6). The mounting plate (211) is provided with a connecting shaft (8). The drive mechanism drives the connecting shaft (8).

6. The locking device for the lower part of the door of a rail vehicle according to claim 2, characterized in that, The slider (4) includes a cantilever (43) for mounting the roller (7), the cantilever (43) protruding from the sliding part (41).

7. The locking device for the lower part of the door of a rail vehicle according to claim 6, characterized in that, The roller (7) has a roller mounting seat (71), which is connected to the cantilever (43) by a connecting block (44). The upper surface of the cantilever (43) and the upper surface of the roller mounting seat (71) are higher than the upper surface of the connecting block (44). The roller mounting seat (71), the connecting block (44) and the upper surface of the roller mounting seat (71) form a groove.

8. A rail vehicle, characterized in that, The rail vehicle includes a door panel and a lower locking device for the rail vehicle door panel as described in any one of claims 1-7, and a sliding door device is also provided on the upper part of the door panel.

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