Sealing mechanism for train door
By designing sealing mechanisms for components such as air pressure chambers, extrusion blocks, sliders and airbags on the train door, the problem of gaps at the top of the train door is solved, better sealing and switching convenience are achieved, and the comfort of train operation is improved Sex and efficiency.
Patent Information
- Application Number
- CN202421701217.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-18
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-07-18
AI Technical Summary
The existing train door sealing mechanism is mainly for side sealing, resulting in large gaps at the top of the train door, which is prone to adverse factors, affecting the isolation of the environment in the car and the efficiency of train operation.
A sealing mechanism including mounting plate, air pressure compartment, extrusion block, slider, airbag and motor is designed. The airbag is moved upward before opening the train door and then downward after closing to ensure the sealing of the top of the train door. The slider is in the During the switching process, the train door is driven to move to avoid difficulties in affecting the switch.
It effectively prevents adverse factors caused by gaps at the top of the train door, ensures the sealing of the train door during use, and avoids switching difficulties caused by airbags during the switching process, improving the sealing and operating efficiency of the train door.
Smart Images
Figure CN222310599U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of traffic accessories, in particular to a sealing mechanism for a train door. Background Art
[0002] The sealing mechanism of the train door is a key component to ensure that the interior of the train is effectively isolated from the external environment during operation. It is used to ensure the comfort and safety of passengers in the carriage, isolate adverse factors such as external noise, dust, wind and rain, keep the environment in the carriage clean, dry and temperature stable, while reducing air resistance and improving the operation efficiency of the train.
[0003] In order to ensure the comfort and safety of passengers in the carriage, isolate them from adverse factors such as external noise, dust, wind and rain, keep the environment in the carriage clean, dry and temperature stable, reduce air resistance and improve the operation efficiency of the train, it is often necessary to install a sealing mechanism on the train door.
[0004] At present, most of the existing train door sealing mechanisms only seal the sides of the train door. In actual use, since the top of the train door is mostly provided with a component that enables the train door to move left and right, there is a large gap at the top of the train door, which is prone to adverse factors during use. Therefore, a sealing mechanism for a train door is proposed to solve the above problem. Utility Model Content
[0005] In order to make up for the above shortcomings, the utility model provides a sealing mechanism for train doors, aiming to improve the problem in the prior art that a large gap often appears at the top of the train door, which is prone to adverse factors during use.
[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a sealing mechanism for a train door, comprising a mounting plate, the inner wall of the mounting plate is provided with a mounting groove, the inner wall of the mounting groove is slidably connected to a train door body, the inner wall of the mounting groove is fixedly connected to a motor, the output shaft of the motor is fixedly connected to a bidirectional threaded rod, the left end of the bidirectional threaded rod is rotatably connected to the inner wall of the mounting groove, a sealing device is arranged inside the mounting plate, and the sealing device comprises an air pressure chamber, the inner wall piston of the air pressure chamber is connected to an extrusion block, one end of the extrusion block close to the middle of the bidirectional threaded rod is elastically connected to the inner wall of the air pressure chamber by a spring, the inner wall piston of the air pressure chamber is connected to a push rod, the outer wall of the bidirectional threaded rod is threadedly connected to a slider, the lower end of the slider is magnetically connected to a connecting plate, the lower end of the connecting plate is fixedly connected to an air bag, and the bottom end of the slider is connected to the top end of the train door body by a connecting component.
[0007] As a further description of the above technical solution:
[0008] The number of the train door bodies is set to two, and a sealing strip is fixedly connected to one end of the two train door bodies that are close to each other.
[0009] As a further description of the above technical solution:
[0010] The connecting assembly includes a connecting tube, the top end of the connecting tube is fixedly connected to the bottom end of the slider, the outer wall of the connecting tube penetrates and is slidably connected to the inner wall of the connecting plate, the outer wall of the connecting tube penetrates the inner wall of the airbag, the inner wall of the connecting tube is slidably connected with a push block, the top end of the push block is elastically connected to the inner wall of the connecting tube by spring 2, and a slide groove is provided at the top end of the train door body.
[0011] As a further description of the above technical solution:
[0012] A through slot is arranged in the middle of the mounting plate, and the length of the train door body is longer than half of the through slot in the middle of the mounting plate.
[0013] As a further description of the above technical solution:
[0014] The air pressure chamber is arranged on the inner wall of the mounting plate above the mounting groove, and the shape of the air pressure chamber is a concave shape with the upper end being longer than the lower end.
[0015] As a further description of the above technical solution:
[0016] The sliding block and the extruding block are at the same horizontal position in the front-rear direction, and the push rod is arranged at the front end and the rear end of the sliding block.
[0017] As a further description of the above technical solution:
[0018] A magnet is arranged at the lower end of the slider, and a magnet is arranged at the upper end of the connecting plate. The magnetic pole at the lower end of the slider is different from the magnetic pole at the upper end of the connecting plate.
[0019] As a further description of the above technical solution:
[0020] The shape of the slide groove is a straight groove, and a hemispherical groove is formed at the bottom of one end of the slide groove away from the middle of the bidirectional threaded rod.
[0021] The utility model has the following beneficial effects:
[0022] 1. In the utility model, through the arrangement of the air pressure chamber, the extrusion block, the spring 1, the push rod, the slider, the connecting plate, the airbag, the bidirectional threaded rod and the motor, the airbag moves up before the train door is opened, and moves down to contact the train door after the train door body is closed, thereby ensuring that the top of the train door body is well sealed when in use, and effectively preventing the adverse factors caused by the large gap at the top of the train door.
[0023] 2. In the utility model, through the arrangement of the slider, the motor, the bidirectional threaded rod, the connecting pipe, the push block, the spring and the slide groove, when opening the train door body, the slider can first move to the end of the slide groove away from the middle of the bidirectional threaded rod and then drive the train door body to move; when closing the train door, the slider can first drive the train door body to move, and when it moves to a point where it can no longer move, the slider moves alone, thereby ensuring that the movement time of the airbag and the movement time of the train door can be well staggered, thereby ensuring that the train door body will not be difficult to open and close due to the influence of the airbag during the opening and closing process. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a three-dimensional structural schematic diagram of the overall structure of the utility model;
[0025] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the overall structure of the utility model;
[0026] Figure 3 For the utility model Figure 2 A magnified schematic diagram of the three-dimensional structure of part A;
[0027] Figure 4 For the utility model Figure 3 Schematic diagram of the enlarged three-dimensional structure of part B.
[0028] Legend:
[0029] 1. Mounting plate; 2. Mounting groove; 3. Train door body; 4. Motor; 5. Bidirectional threaded rod; 6. Sealing strip; 7. Sealing device; 8. Connecting assembly; 71. Air pressure chamber; 72. Extrusion block; 73. Spring 1; 74. Push rod; 75. Slider; 76. Connecting plate; 77. Airbag; 81. Connecting pipe; 82. Push block; 83. Spring 2; 84. Slide groove. DETAILED DESCRIPTION
[0030] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0031] Reference Figure 1 and Figure 2The utility model provides an embodiment: a sealing mechanism for a train door, comprising a mounting plate 1, the mounting plate 1 is connected to the inner wall of the side of the train, the inner wall of the mounting plate 1 is provided with a mounting groove 2, the inner wall of the mounting groove 2 is slidably connected with a train door body 3, a through groove is provided in the middle of the mounting plate 1, the length of the train door body 3 is longer than half of the through groove in the middle of the mounting plate 1, and the length setting of the train door body 3 ensures that the train door body 3 can completely block the through groove in the middle of the mounting plate 1 after closing; the inner wall of the mounting groove 2 is fixedly connected with a motor 4, the output shaft of the motor 4 is fixedly connected with a bidirectional threaded rod 5, the left and right sides of the bidirectional threaded rod 5 are provided with threads with the same pitch in opposite directions, the left end of the bidirectional threaded rod 5 is rotatably connected with the inner wall of the mounting groove 2, the number of the train door bodies 3 is set to two, and the ends of the two train door bodies 3 close to each other are fixedly connected with a sealing strip 6, and the material of the sealing strip 6 is set to rubber.
[0032] Reference Figure 2-Figure 4 A sealing device 7 is provided inside the mounting plate 1, and the sealing device 7 includes an air pressure chamber 71. The air pressure chamber 71 is opened on the inner wall of the mounting plate 1 above the mounting groove 2. The inner wall piston of the air pressure chamber 71 is connected with an extrusion block 72. One end of the extrusion block 72 close to the middle of the two-way threaded rod 5 is elastically connected to the inner wall of the air pressure chamber 71 through a spring 73. One end of the spring 73 is fixedly connected to one end of the extrusion block 72 close to the middle of the two-way threaded rod 5, and the other end of the spring 73 is fixedly connected to the inner wall of the air pressure chamber 71. The inner wall piston of the bin 71 is connected to a push rod 74, which is located at the front and rear ends of the extrusion block 72. The push rod 74 and the extrusion block 72 are not in the same plane. The outer wall of the bidirectional threaded rod 5 is threadedly connected to a slider 75, and the slider 75 and the front and rear ends of the extrusion block 72 are in the same horizontal position. The push rod 74 is located at the front and rear ends of the slider 75. By setting the positional relationship between the push rod 74, the slider 75 and the extrusion block 72, it is ensured that the slider 75 can push the extrusion block 72 without causing motion interference with the push rod 74.
[0033] Reference Figure 2-Figure 4 The lower end of the slider 75 is magnetically connected to the connecting plate 76. A magnet is provided at the lower end of the slider 75, and a magnet is provided at the upper end of the connecting plate 76. The magnetic pole at the lower end of the slider 75 is different from the magnetic pole at the upper end of the connecting plate 76. The different magnetic poles are provided to ensure that the connecting plate 76 can move upward under the magnetic force of the slider 75 without being subjected to force. The lower end of the connecting plate 76 is fixedly connected to an airbag 77. The material of the airbag 77 is rubber, and the interior of the airbag 77 is filled with gas. The shape of the airbag 77 is a long strip with a round hole in the middle.
[0034] Reference Figure 2-Figure 4The bottom end of the slider 75 is connected to the top of the train door body 3 through a connecting assembly 8, which includes a connecting tube 81, the top of which is fixedly connected to the bottom end of the slider 75, the outer wall of the connecting tube 81 passes through and is slidably connected to the inner wall of the connecting plate 76, the length of the connecting tube 81 is consistent with the distance between the bottom end of the slider 75 and the top of the train door body 3, the outer wall of the connecting tube 81 passes through the inner wall of the airbag 77, and the inner wall of the connecting tube 81 is slidably connected with a push block 82, the top of the push block 82 is elastically connected to the inner wall of the connecting tube 81 through a spring 83, one end of the spring 83 is fixedly connected to the top of the push block 82, and the other end of the spring 83 is fixedly connected to the inner wall of the connecting tube 81, and a slide groove 84 is provided at the top of the train door body 3, the shape of the slide groove 84 is a straight groove shape, and a hemispherical groove is provided at the bottom of one end of the slide groove 84 away from the middle of the two-way threaded rod 5.
[0035] Working principle: When in use, the staff starts the motor 4 when the car door needs to be opened, so that the output shaft of the motor 4 drives the bidirectional threaded rod 5 to rotate, so that the slider 75 moves toward the side away from the middle of the bidirectional threaded rod 5, and drives the connecting pipe 81 and the push block 82 to move toward the side away from the middle of the bidirectional threaded rod 5 through the slider 75.
[0036] When the connecting pipe 81 moves to the end of the slide groove 84 away from the middle of the two-way threaded pipe 5, the push block 82 pushes the train door body 3 through the inner wall of the slide groove 84, so that the train door body 3 moves toward the end away from the slide groove 84.
[0037] At the same time, when the slider 75 moves to the point where the push block 82 is on the side of the slide groove 84 away from the middle of the bidirectional threaded rod 5, the slider 75 leaves the extrusion block 72, so that the extrusion block 72 is not subjected to the pressure of the slider 75, so that the extrusion block 72 moves toward the direction close to the slider 75 under the elastic force of the spring 1 73.
[0038] When the extrusion block 72 moves, the internal space of the air pressure chamber 71 increases, thereby reducing the air pressure inside the air pressure chamber 71, so that the push rod 74 moves upward under the action of the air pressure, so that the top of the connecting plate 76 is not subjected to force, so that the connecting plate 76 moves upward under the action of the magnetic force until it contacts the slider 75, thereby ensuring that the train door body 3 will not be obstructed by the fit with the airbag 77 when moving left and right.
[0039] When the train door body 3 needs to be closed, the push block 82 is at the side of the slide groove 84 farthest from the middle of the two-way threaded rod. Since the bottom end of the slide groove 84 is provided with a hemispherical groove, and the push block 82 is subjected to the elastic force of the spring 2 83, the bottom end of the push block 82 is in the bottom groove of the slide groove 84. Therefore, when the staff starts the motor 4 and makes the output shaft of the motor 4 drive the two-way threaded rod 5 to rotate in the opposite direction, the slider 75 drives the connecting pipe 81 and the push block 82 to move toward the side close to the middle of the two-way threaded rod 5, and the push block 82 can drive the train door body 3 to move toward the side close to the middle of the two-way threaded rod 5 through the spherical surface of the groove.
[0040] When the two train door bodies 3 move to contact each other, the train door bodies 3 cannot move further, and at this time the slider 75 just contacts the surface of the extrusion block 72. At this time, when the slider 75 continues to move toward the side close to the middle of the two-way threaded rod 5 under the drive of the two-way threaded rod 5, since the train door body 3 cannot move, after the slider 75 continues to move, the spherical surface of the push block 82 is squeezed by the spherical surface of the slide groove 84, so the push block 82 is subjected to an upward force, so that the push block 82 moves upward to leave the slide groove 84 and is away from the hemispherical groove on one side of the middle of the two-way threaded rod 5 before continuing to move.
[0041] As the slider 75 continues to move, the slider 75 pushes the extrusion block 72, causing the extrusion block 72 to move toward the direction of entering the air pressure chamber 71, thereby increasing the gas pressure inside the air pressure chamber 71, causing the push rod 74 to move downward under the action of the air pressure, thereby pushing the connecting plate 76, and causing the connecting plate 76 and the airbag 77 to move downward, so that the airbag 77 fits against the top of the train door body 3, thereby ensuring the airtightness of the train door during driving after the door is closed.
[0042] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.
Claims
1. A sealing mechanism for a train door, comprising a mounting plate (1), characterized in that: The inner wall of the mounting plate (1) is provided with a mounting groove (2), the inner wall of the mounting groove (2) is slidably connected to a train door body (3), the inner wall of the mounting groove (2) is fixedly connected to a motor (4), the output shaft of the motor (4) is fixedly connected to a bidirectional threaded rod (5), the left end of the bidirectional threaded rod (5) is rotatably connected to the inner wall of the mounting groove (2), a sealing device (7) is arranged inside the mounting plate (1), the sealing device (7) comprises an air pressure chamber (71), the inner wall piston of the air pressure chamber (71) is connected to an extrusion block (7 2), one end of the extrusion block (72) close to the middle of the bidirectional threaded rod (5) is elastically connected to the inner wall of the air pressure chamber (71) through a spring (73), the inner wall piston of the air pressure chamber (71) is connected to a push rod (74), the outer wall of the bidirectional threaded rod (5) is threadedly connected to a slider (75), the lower end of the slider (75) is magnetically connected to a connecting plate (76), the lower end of the connecting plate (76) is fixedly connected to an air bag (77), and the bottom end of the slider (75) is connected to the top of the train door body (3) through a connecting assembly (8).
2. A sealing mechanism for a train door according to claim 1, characterized in that: The number of the train door bodies (3) is set to two, and a sealing strip (6) is fixedly connected to one end of the two train door bodies (3) that are close to each other.
3. The sealing mechanism for a train door according to claim 1, characterized in that: The connecting assembly (8) comprises a connecting tube (81), the top end of the connecting tube (81) is fixedly connected to the bottom end of the slider (75), the outer wall of the connecting tube (81) penetrates and is slidably connected to the inner wall of the connecting plate (76), the outer wall of the connecting tube (81) penetrates the inner wall of the airbag (77), the inner wall of the connecting tube (81) is slidably connected to a push block (82), the top end of the push block (82) is elastically connected to the inner wall of the connecting tube (81) via a spring 2 (83), and a slide groove (84) is provided at the top end of the train door body (3).
4. The sealing mechanism for a train door according to claim 1, characterized in that: A through slot is provided in the middle of the mounting plate (1), and the length of the train door body (3) is longer than half of the through slot in the middle of the mounting plate (1).
5. The sealing mechanism for a train door according to claim 1, characterized in that: The air pressure chamber (71) is opened on the inner wall of the mounting plate (1) above the mounting groove (2), and the shape of the air pressure chamber (71) is a concave shape with the upper end being longer than the lower end.
6. The sealing mechanism for a train door according to claim 1, characterized in that: The slider (75) and the extrusion block (72) are at the same horizontal position in the front-to-back direction, and the push rod (74) is arranged at the front and rear ends of the slider (75).
7. The sealing mechanism for a train door according to claim 1, characterized in that: A magnet is disposed at the lower end of the slider (75), and a magnet is disposed at the upper end of the connecting plate (76). The magnetic pole at the lower end of the slider (75) is different from the magnetic pole at the upper end of the connecting plate (76).
8. The sealing mechanism for a train door according to claim 3, characterized in that: The shape of the slide groove (84) is a straight slot shape, and a hemispherical groove is formed at the bottom of one end of the slide groove (84) away from the middle of the bidirectional threaded rod (5).