A retractable and extendable active anti-derailment device

Abstract

The present application discloses a retractable and extendable active anti-derailment device, which relates to the field of train safety and comprises an airflow cover, which is mounted on the bottom of the train and is rotatably connected to two mechanical arms, wherein the rotation axes of the two mechanical arms are arranged in a vertical direction; a clamping assembly for clamping rails is arranged on the mechanical arms, and the two mechanical arms rotate to drive the clamping assembly to approach or move away from the rails on both sides, and a driving assembly for driving the mechanical arms to rotate is also arranged on the airflow cover; the present application arranges the clamping assembly, the flipping assembly and the linkage assembly, so that when the train encounters a risk of possible derailment, the mechanical arms are driven to rotate, so that the inner roller first abuts against the inner belly of the rail, and then, under the action of the linkage assembly and the flipping assembly, the flipping frame flips so that the outer roller abuts against the outer belly of the rail; thereby, the clamping assembly can effectively clamp the rails, resist lateral and longitudinal external forces for the train, strengthen the connection between the train and the rails, and reduce the risk of train derailment.

Description

Technical Field

[0001] The present application relates to the field of train safety, and in particular to a retractable and extendable active anti-derailment device. Background Art

[0002] With the rapid development of the national economy, the high-speed rail industry has also developed greatly. The "eight vertical and eight horizontal" high-speed rail line layout is being gradually completed and improved. Although high-speed rail is a more convenient and safer way of transportation than other means of transportation, in some emergencies, such as earthquakes, landslides or sudden appearance of foreign objects on the track, high-speed trains need to stay safely and stably on the track.

[0003] There are some studies on train derailment prevention, such as:

[0004] CN106347377A discloses a three-dimensional track type super-speed high-speed railway, and its train anti-derailment device is to set an inverted roof rail and a roof rail wheel and an arch support frame on the roof of the train compartment, and the arch support frame is installed on the ground roadbed, and two inverted roof rails are installed and fixed on the arch support frame, and the track on the ground forms a three-dimensional track up and down, and the train is strongly restricted from derailing. Although this technology can prevent train derailment to a great extent, its construction cost is relatively high, and it belongs to the passive anti-derailment category.

[0005] In order to prevent Shinkansen trains from derailing during earthquakes, Japan has developed anti-derailment protection devices and anti-deviation limiters, but these devices are only used on some lines. Shinkansen trains can only reduce the probability of derailment on these lines, and these devices cannot completely restrict the trains on the track; subsequently, new lateral dampers and anti-collision limiters were developed, which greatly reduced the economic cost of derailment prevention, but they are still passive anti-derailment devices and can only be used when the train is about to derail.

[0006] Based on the above research content and the existing anti-derailment methods, the main problems are as follows: First, the installation cost is high. If you want to achieve the ideal state of preventing high-speed train derailment, you need to install a large number of protective devices on the railway line; second, although the devices installed on the train reduce the economic cost, they cannot take the initiative to respond in advance when dealing with emergencies, which may result in a situation where it is too late to protect the train from derailment; third, the anti-derailment device installed on the body of the high-speed train is very rigid when preventing derailment, which can easily cause great damage to the train or track, sometimes even more harmful than earthquakes and mudslides. Summary of the invention

[0007] In order to effectively and actively clamp the rail track and prevent the train from derailing, the present application provides a retractable and extendable active anti-derailment device.

[0008] The present application provides a retractable and extendable active anti-derailment device, which adopts the following technical solution:

[0009] A retractable and extendable active anti-derailment device comprises an airflow cover, which is mounted at the bottom of a train. Two mechanical arms are rotatably connected to the airflow cover, and the rotation axes of the two mechanical arms are arranged along the vertical direction. The mechanical arms are provided with clamping components for clamping rails, and the two mechanical arms rotate to drive the clamping components to approach or move away from the rails on both sides. The airflow cover is also provided with a driving component for driving the mechanical arms to rotate.

[0010] Furthermore, a rack is provided on the airflow cover along the length direction of the rail, and the driving assembly includes a self-propelled slider and a connecting rod. The self-propelled slider is slidably connected to the rack, and both ends of the connecting rod are rotatably connected to the mechanical arm and the self-propelled slider respectively.

[0011] Furthermore, the self-propelled slider is provided with a motor, the output shaft of the motor is fixedly connected with a gear, and the gear is meshed with the rack.

[0012] Furthermore, the clamping assembly includes a branch rod and a flip frame, the branch rod is connected to the mechanical arm, and the branch rod is rotatably connected to an inner roller for abutting the inner belly of the rail; the flip frame is rotatably connected to the mechanical arm, and the flip frame is rotatably connected to an outer roller for abutting the outer belly of the rail, and the flip frame rotates to make the outer roller abut the outer belly of the rail; when the mechanical arm approaches the airflow hood, the flip frame overlaps with the branch rod in the vertical direction; the mechanical arm is also provided with a flip assembly for driving the flip frame to rotate.

[0013] Furthermore, the flipping assembly includes bevel gear 1 and bevel gear 2, the rotation axis of the flipping frame is arranged along the length direction of the mechanical arm, the bevel gears are coaxially fixedly connected to the flipping frame, the bevel gear 2 is rotatably connected to the mechanical arm, and the rotation axis of the bevel gear 2 is arranged along the vertical direction; the bevel gear 1 is meshed with the bevel gear 2, and the mechanical arm is also provided with a linkage assembly for driving the bevel gear 2 to rotate.

[0014] Furthermore, the linkage assembly includes a sliding rod, a spring and a linkage rod, the middle section of the branch rod is rotatably connected to the mechanical arm, the rotation axis of the branch rod is arranged in the vertical direction, and the branch rod is fixedly connected to the bevel gear 2; the sliding rod is slidably connected to the mechanical arm along the length direction of the mechanical arm, and the two ends of the linkage rod are respectively rotatably connected to the branch rod and the sliding rod; the two ends of the spring are respectively fixedly connected to the sliding rod and the mechanical arm; when the spring is in a natural state, the branch rod overlaps with the flip frame in the vertical direction.

[0015] Furthermore, a telescopic rod is provided on the flip frame, and the telescopic rod is vertically arranged with the mechanical arm; the outer roller is rotatably connected to the telescopic rod.

[0016] Furthermore, the external gear includes a fixed part and a plurality of sliding parts, the fixed part is rotatably connected to the telescopic rod; a side of the fixed part close to the flip frame is an outwardly convex inclined surface, and a plurality of sliding grooves are evenly spaced along the circumferential direction on the inclined surface; the sliding part is slidably connected in the sliding groove, and the sliding part slides to extend out of or retract into the fixed part.

[0017] In summary, this application includes the following beneficial technical effects:

[0018] The present application arranges a clamping assembly, a flipping assembly and a linkage assembly, so that when a train encounters a risk of possible derailment, the mechanical arm is driven to rotate so that the inner roller first abuts against the inner belly of the rail, and then under the action of the linkage assembly and the flipping assembly, the flipping frame flips so that the outer roller abuts against the outer belly of the rail; thereby, the clamping assembly can effectively clamp the rail, resist lateral and longitudinal external forces for the train, strengthen the connection between the train and the rail, and reduce the risk of train derailment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall structural diagram of a retractable and extendable active anti-derailment device of the present application when it is retracted;

[0020] Figure 2 This is an overall structural diagram of a retractable and extendable active anti-derailment device of the present application when it is deployed;

[0021] Figure 3 yes Figure 1 Exploded view of the overall structure of the clamping assembly;

[0022] Figure 4 yes Figure 3 Partial structural diagram of the outer roller.

[0023] Description of reference numerals:

[0024] 11. Airflow cover; 12. Mechanical arm; 13. Connecting rod; 14. Rack; 15. Self-propelled slider; 21. Branch rod; 22. Inner roller; 23. Turning frame; 24. Outer roller; 241. Fixed part; 242. Sliding part; 243. Slide; 25. Telescopic rod; 31. Bevel gear 1; 32. Bevel gear 2; 41. Linkage rod; 42. Spring; 43. Sliding rod. DETAILED DESCRIPTION

[0025] The following is combined with Figure 1-4 This application is described in further detail.

[0026] The embodiment of the present application discloses a retractable and extendable active anti-derailment device, which includes an airflow hood 11, which is integrally mounted on the bottom of a train; both sides of the airflow hood 11 are rotatably connected to mechanical arms 12, the rotation axis of the mechanical arms 12 is arranged along the vertical direction, and the two mechanical arms 12 are respectively used to approach the rails on both sides; a clamping assembly is provided on the mechanical arm 12, and when the mechanical arm 12 approaches the rail, the clamping assembly clamps the belly of the rail to stabilize the train; a driving assembly for driving the mechanical arm 12 to rotate is provided on the airflow hood 11.

[0027] In this embodiment, the driving assembly includes a self-propelled slider 15 and a connecting rod 13. A rack 14 is provided on the airflow cover 11 along the length direction of the rail. The self-propelled slider 15 is slidably connected to the rack 14 along the length direction of the rack 14. The two ends of the connecting rod 13 are respectively rotatably connected to the self-propelled slider 15 and the mechanical arm 12. At the same time, a gear is rotatably connected to the self-propelled slider 15, and the gear is meshed with the rack 14. A motor for driving the gear to rotate is also provided on the self-propelled slider 15.

[0028] When it is necessary to clamp the rails, the motor drives the gears to rotate, thereby driving the self-propelled slider 15 to slide, and finally the mechanical arm 12 is unfolded to move the clamping assembly to the position of clamping the rails; when it is not necessary to clamp the rails, the entire device does not interfere with the rails, so it will not cause damage to the train and track, nor will it interfere with the operation of the train.

[0029] In this embodiment, the clamping assembly includes a branch rod 21 and a flip frame 23, both of which are rotatably connected to the robot arm 12, the rotation axis of the branch rod 21 is set in the vertical direction, and the rotation axis of the flip frame 23 is set along the length direction of the robot arm 12; the branch rod 21 is rotatably connected to an inner roller 22, and the flip frame 23 is rotatably connected to an outer roller 24, and the rotation axis of the inner roller 22 is set in the vertical direction; when the robot arm 12 is unfolded, the branch rod 21 and the flip frame 23 overlap in the vertical direction, and at the same time, a flip assembly for driving the flip frame 23 to rotate is provided on the robot arm 12.

[0030] During the deployment of the robot arm 12, the inner roller 22 first abuts against the inner belly of the rail, and then the robot arm 12 is mechanically deployed, and the rolling frame is driven to rotate through the flipping assembly, so that the outer roller 24 moves over the rail to the outside of the rail, and the outer roller 24 abuts against the outer belly of the rail, thereby completing the clamping of the rail together with the inner roller 22.

[0031] In this embodiment, the flipping assembly includes a bevel gear 1 31 and a bevel gear 2 32. The bevel gear 1 31 is coaxially fixedly connected to the flipping frame 23, and the bevel gear 2 32 is rotatably connected to the robotic arm 12. The rotation axis of the bevel gear 2 32 is arranged in the vertical direction, and the bevel gear 1 31 and the bevel gear 2 32 are meshed. When the bevel gear 2 32 rotates, the bevel gear 1 31 rotates, thereby completing the rotation of the flipping frame 23. Therefore, a linkage assembly for driving the bevel gear 2 32 to rotate is provided on the robotic arm 12.

[0032] The linkage assembly includes a slide bar 43, a spring 42 and a linkage bar 41. A groove is provided on the mechanical arm 12 along its length direction. The slide bar 43 is slidably connected in the groove, one end of which is fixedly connected to one end of the spring 42, and the other end of the spring 42 is fixedly connected to the inner wall of the groove. When the spring 42 is in a natural state, the branch rod 21 and the flip frame 23 overlap; the two ends of the linkage bar 41 are respectively rotatably connected to the slide bar 43 and the branch rod 21; the branch rod 21 is fixedly connected to the bevel gear 2 32; the rotation axis of the branch rod 21 coincides with the rotation axis of the bevel gear 2 32; therefore, when the mechanical arm 12 is unfolded and the inner roller 22 abuts against the rail, the mechanical arm 12 continues to rotate, which will drive the linkage bar 41 to rotate, thereby pushing the slide bar 43 to slide to compress the spring 42; at this time, there is relative rotation between the branch rod 21 and the mechanical arm 12, thereby driving the bevel gear 2 32 to rotate.

[0033] At the same time, the presence of the spring 42 also drives the contact force between the outer roller 24 and the rail to be greater, so that the rail can be clamped better.

[0034] Considering that the outer roller 24 needs to clamp the belly of the outer side of the rail, and the common rails are usually thicker at the upper end, it is necessary to make the outer roller 24 pass over the upper end of the rail. Therefore, a telescopic rod 25 is provided on the turning frame 23, and the telescopic rod 25 is perpendicular to the mechanical arm 12. The outer roller 24 is divided into a fixed part 241 and a plurality of sliding parts 242, and the fixed part 241 is rotatably connected to the telescopic rod 25; the fixed part 241 is provided with an outwardly convex inclined surface on a side close to the turning frame 23, and a plurality of slide grooves 243 are evenly spaced along the circumferential direction on the inclined surface; the sliding part 242 is slidably connected in the slide groove 243; when the turning frame 23 completes the rotation and the connecting rod is downward, the telescopic rod 25 is extended under the action of gravity; then, the sliding part 242 also slides under the action of gravity, thereby extending out of the fixed part 241, which is equivalent to expanding the outer diameter of the entire outer roller 24 so that it can abut against the belly of the outer side of the rail.

[0035] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A retractable and extendable active anti-derailment device, characterized in that: The invention comprises an airflow cover (11), wherein the airflow cover (11) is installed at the bottom of a train, and two mechanical arms (12) are rotatably connected to the airflow cover (11), and the two mechanical arms (12) rotate to respectively approach or move away from rails on both sides; the mechanical arms (12) are provided with a clamping assembly for clamping the rails, and the airflow cover (11) is also provided with a driving assembly for driving the mechanical arms (12) to rotate, and the mechanical arms (12) rotate to drive the clamping assembly to approach or move away from the rails; The airflow cover (11) is provided with a rack (14) along the length direction of the rail, the driving assembly comprises a self-propelled slider (15) and a connecting rod (13), the self-propelled slider (15) is slidably connected to the rack (14), and the two ends of the connecting rod (13) are rotatably connected to the mechanical arm (12) and the self-propelled slider (15) respectively; The self-propelled slider (15) is provided with a motor, the output shaft of the motor is fixedly connected to a gear, and the gear is meshed with the rack; The clamping assembly comprises a branch rod (21) and a turning frame (23); the branch rod (21) is connected to the mechanical arm (12); an inner roller (22) for contacting the inner belly of a rail is rotatably connected to the branch rod (21); the turning frame (23) is rotatably connected to the mechanical arm (12); an outer roller (24) for contacting the outer belly of a rail is rotatably connected to the turning frame (23); the turning frame (23) is rotated to make the outer roller (24) contact the outer belly of the rail; when the mechanical arm (12) approaches the airflow cover (11), the turning frame (23) and the branch rod (21) overlap by 3 in the vertical direction; the mechanical arm (12) is also provided with a turning assembly for driving the turning frame (23) to rotate.

2. A retractable and extendable active anti-derailment device according to claim 1, characterized in that: The flip assembly comprises a bevel gear 1 (31) and a bevel gear 2 (32); the rotation axis of the flip frame (23) is arranged along the length direction of the mechanical arm (12); the bevel gear 1 (31) is coaxially fixedly connected to the flip frame (23); the bevel gear 2 (32) is rotationally connected to the mechanical arm (12); the rotation axis of the bevel gear 2 (32) is arranged along the vertical direction; the bevel gear 1 (31) is meshed with the bevel gear 2 (32); and the mechanical arm (12) is also provided with a linkage assembly for driving the bevel gear 2 (32) to rotate.

3. A retractable and extendable active anti-derailment device according to claim 2, characterized in that: The linkage assembly comprises a slide bar (43), a spring (42) and a linkage bar (41); the middle section of the branch bar (21) is rotatably connected to the mechanical arm (12); the rotation axis of the branch bar (21) is arranged in the vertical direction; the branch bar (21) is fixedly connected to the second bevel gear (32); the slide bar (43) is slidably connected to the mechanical arm (12) along the length direction of the mechanical arm (12); the two ends of the linkage bar (41) are rotatably connected to the branch bar (21) and the slide bar (43); the two ends of the spring (42) are fixedly connected to the slide bar (43) and the mechanical arm (12); when the spring (42) is in a natural state, the branch bar (21) and the flip frame (23) overlap in the vertical direction.

4. A retractable and extendable active anti-derailment device according to claim 1, characterized in that: A telescopic rod (25) is provided on the turning frame (23), and the telescopic rod (25) is vertically arranged with the mechanical arm (12); the outer roller (24) is rotatably connected to the telescopic rod (25).

5. A retractable and extendable active anti-derailment device according to claim 4, characterized in that: The outer roller (24) comprises a fixed portion (241) and a plurality of sliding portions (242), wherein the fixed portion (241) is rotatably connected to the telescopic rod (25); a side of the fixed portion (241) close to the flip frame (23) is an outwardly convex inclined surface, and a plurality of sliding grooves (243) are evenly spaced along the circumferential direction on the inclined surface; the sliding portion (242) is slidably connected to the sliding groove (243), and the sliding portion (242) slides to extend out of or retract into the fixed portion (241).

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