A system for rapid boarding and alighting of passengers in vacuum tube maglev trains

Abstract

The present invention relates to a system for rapid boarding and alighting of a vacuum tube magnetic levitation train, and belongs to the field of rail transit technology. The system includes a fixed channel and a mobile channel, the platform passage is equipped with a sealed isolation door, the mobile channel has a docking port, the bottom is supported on the ground track by rollers, and is connected to a translation drive device; the port of the docking port is equipped with a docking seal ring, and hook-type locking mechanisms are installed on both sides of the docking port; the fixed channel and the mobile channel are sealed and connected by a sealing tarpaulin; the sealed isolation door has a load-bearing wheel supported on the door rail, and each load-bearing wheel is equipped with a tightening cylinder, and the front end of the telescopic push rod of the tightening cylinder faces the sealed isolation door. The present invention reliably maintains the vacuum degree of the vacuum pipeline by taking a series of comprehensive sealing measures, ensures the running performance of the train, and isolates the pressing force of the seals at both ends of the sealed isolation door and the outer door of the train so that they do not interfere with each other, which is conducive to maintaining the sealing effect.

Description

Technical Field

[0001] The invention relates to a rapid passenger boarding and disembarking device for a train, in particular to a rapid passenger boarding and disembarking system for a vacuum tube magnetic levitation train, belonging to the technical field of rail transportation. Background Art

[0002] Air resistance is the fundamental reason that limits the maximum economic operating speed of ground transportation on the platform. Trains running in vacuum tubes combine magnetic levitation train technology with low-pressure tube technology, which can get rid of the constraints of the dense atmosphere on the surface, and can minimize the friction resistance and aerodynamic resistance of the train when running at high speed, thus achieving ultra-high-speed transportation. Since the vacuum tube is in a vacuum state, and the carriages in the tube and the platform outside the tube are in a standard atmospheric environment, the key problem that passengers need to solve when getting on and off the train is to cross the vacuum zone between the platform and the carriage, that is, to build a stable transition channel with standard atmospheric pressure in a vacuum environment.

[0003] At present, there are two main types of train connection solutions: one is that the vehicle enters a normal pressure environment through an air pressure transition cabin to complete the boarding and alighting of passengers. This solution requires a large amount of inflation and deflation equipment to achieve air pressure conversion (ventilation when entering the station and vacuum pumping when leaving the station) and independent space to accommodate the train. It occupies a large volume, has high infrastructure and operating costs, and is time-consuming. The other is that the vehicle is parked in a vacuum environment, and the carriage and platform are connected through a well-sealed docking transition channel, and passengers get on and off the train through this channel. This method occupies a small space, has low operating costs, and is easy to commercialize.

[0004] According to the applicant, the design of the existing docking structure fails to properly solve two major difficult problems: 1) the docking structure needs to accurately align the outer door of the train with a docking error of centimeters after the train stops, and lacks a reliable locking device; 2) after the docking of the vehicle body, it is difficult to ensure reliable isolation and sealing between the vehicle body and the surrounding low vacuum environment.

[0005] According to the search, the Chinese patent application with application number 201711087916.5 discloses a docking device for high-speed train carriages in a station and a vacuum pipeline, which is a composite device constructed by a passage, a passage door, a system isolation film sleeve, a positioning column, a mechanical power device and various auxiliary structures; the device can connect the station's normal pressure system with the train carriage's normal pressure system in the vacuum pipeline, allowing passengers to safely walk out of the carriage, enter the station or walk into the carriage from the station without destroying the vacuum degree in the vacuum pipeline. The sealed door of this technical solution is set on the inside of the passage. The inner door occupies the internal space, which is not conducive to walking, and is not easy to maintain, and the sealing requirements will also be increased; the vacuum inside the two doors is not re-pressurized, and the excessive pressure difference between the inside and the outside will cause strong suction and make it difficult to open the door; the streamlined shape of the train body is destroyed, which has a bad impact on the aerodynamic resistance and wind noise during the operation of the train.

[0006] In addition, the Chinese patent document with application number 201810224890.2 discloses a vacuum connection system for a vacuum tube maglev train, including a transition cabin, a metal bellows and a docking frame, wherein a sealed door is provided at the front end of the transition cabin, the rear end of the transition cabin is connected to one end of the metal bellows, the other end of the metal bellows is connected to the docking frame, the docking frame is used for docking with the maglev train, a telescopic aisle is provided in the metal bellows, one end of the telescopic aisle is connected to the docking frame, a telescopic aisle chute is provided at the bottom of the transition cabin, the other end of the telescopic aisle is arranged in the telescopic aisle chute, an electric cylinder is connected between the transition cabin and the docking frame, the electric cylinder drives the docking frame to move, so that the metal bellows moves along the telescopic aisle chute with the telescopic aisle, and the metal bellows is used for flexible docking of the maglev train and the station. Research has shown that its disadvantages are that the curved surface sealing effect of the O-ring seal is poor, the accuracy of the curved surface docking cannot be guaranteed, and there is no solution to the upper and lower deviations of the docking point, so the sealing effect cannot be guaranteed; in addition, the docking interface uses magnetic suction to provide sealing force, and magnetic materials need to be added to the train body as a docking pair, which increases the load of the train and reduces the carrying capacity. Summary of the invention

[0007] The purpose of the present invention is to provide a system for quickly boarding and alighting passengers in a vacuum tube maglev train, which not only ensures sealing by taking comprehensive measures but also maintains ideal running performance of the train, in view of the problems existing in the above-mentioned prior art.

[0008] To achieve the above-mentioned purpose, the basic technical scheme adopted by the present invention is: a system for rapid boarding and alighting of passengers on a vacuum tube maglev train, comprising a fixed passage fixedly connected to a platform and a movable passage with a sealing sleeve mounted on the fixed passage to form a horizontal movable pair, a passageway of the platform corresponding to the fixed passage is equipped with a sealed isolation door driven by a translation mechanism, an end of the movable passage adjacent to the train has a docking port matched with an outer door of the train, the bottom of the movable passage is supported on a platform ground track facing the outer door of the train through rollers, and is connected with a translation drive device;

[0009] The end of the docking port is equipped with a docking sealing ring that can be embedded in the docking groove of the train outer door, and both sides of the docking port are respectively equipped with hook-type locking mechanisms corresponding to the corresponding lock columns of the train outer door;

[0010] The fixed channel is sealed and connected to one end of the surrounding sealing tarpaulin, and the other end of the sealing tarpaulin is sealed and connected to the movable channel;

[0011] The four corners of the sealed isolation door respectively support the load-bearing wheels on the corresponding door rails of the platform. Each load-bearing wheel is equipped with a tightening cylinder whose cylinder body is placed on the platform. The front end of the telescopic push rod of the tightening cylinder is opposite to the corresponding position of the sealed isolation door.

[0012] When the train stops at the station, the translation drive device starts to drive the mobile channel to translate relative to the fixed channel, so that the docking port is close to the outer door of the train, until the docking seal ring is embedded in the docking groove of the outer door of the train, and then the hook-type locking mechanism hangs on the corresponding lock column of the outer door of the train and tightens it, so as to ensure the positioning seal between the outer door of the train and the docking port; in this process, the sealing tarpaulin stretches with the translation of the mobile channel relative to the fixed channel, and always maintains the seal between the two; and the sealed isolation door at the platform passage is kept tightly against the passage opening by the action of the four-corner tightening cylinders. The sealing layer of the sealed isolation door is kept sealed until the channel docking is completed, and then the sealed isolation door is opened. It is not difficult to understand that the present invention reliably maintains the vacuum degree of the vacuum pipe by adopting a series of comprehensive sealing measures such as the sealed isolation door, the sealed tarpaulin and the embedding and tightening seal of the docking port, and each door is easy to open and close, does not affect the streamlined shape of the vehicle body, and has no additional resistance, thereby ensuring the running performance of the train. Moreover, the flexible sealing link of the sealing tarpaulin not only properly solves the sealing problem of the intermediate link between the fixed channel and the mobile channel, but also isolates the compression forces of the sealing isolation door and the seals at both ends of the train outer door so that they do not interfere with each other, which is conducive to maintaining the sealing effect.

[0013] The present invention is further improved as follows: the locking mechanism includes a lock hook hinged on the end of the telescopic nut, with the hook mouth facing downwards towards the corresponding lock column; the telescopic nut and the docking port form a horizontal moving pair and a spiral pair with the axial limit driving screw supported on the docking port; the lock hook extends upwards to form a straightening push rod, and a straightening spring is installed between the straightening push rod and the baffle fixed on the docking port; when the telescopic nut is driven to retract, the straightening spring drives the lock hook to turn around the hinge fulcrum to hook the lock column and gradually tighten the position through the straightening push rod; when the telescopic nut is driven to extend, the straightening spring drives the lock hook to turn around the hinge fulcrum to the hook mouth to disengage from the lock column through the straightening push rod. This locking mechanism with a simple and ingenious structure not only helps to ensure reliable docking in place, but also further pressurizes to ensure the sealing of the docking.

[0014] A further improvement of the present invention is that passenger pedals are laid in the fixed channel and the movable channel, and the passenger pedals include a movable channel pedal with one end hinged on the supporting end of the movable channel, and a fixed channel pedal with one end hinged on the supporting end of the fixed channel; the fixed channel pedal is provided with gradually lowered slope surfaces on both sides of one end adjacent to the movable channel pedal, and the movable channel pedal is provided with pedal rollers corresponding to the positions of the corresponding slope surfaces on both sides of one end adjacent to the fixed channel pedal. In this way, when the movable channel is retracted into the fixed channel, the movable channel pedal is stacked in the middle because one end gradually climbs onto the slope surface of the fixed channel pedal; when the movable channel extends out to connect with the fixed channel, the movable channel pedal is flattened because one end gradually slides down the slope surface of the fixed channel pedal, so as to facilitate passengers to enter and exit.

[0015] A further improvement of the present invention is that the fixed channel forms a moving pair with the moving channel through the slide rails and slider structures on both sides.

[0016] A further improvement of the present invention is that the translation mechanism is composed of a combination nut fixedly connected to the upper part of the sealed isolation door and a lead screw driven by a motor arranged on the platform.

[0017] The present invention is further improved in that the front end of the telescopic push rod of the jacking cylinder is fixedly connected to the push rod clamped by the push rod baffles on the upper and lower sides, and the push rod is directly opposite to the corresponding position of the sealed isolation door.

[0018] A further improvement of the present invention is that the translation drive device includes a lead screw supported on a bearing seat on the platform ground, and the lead screw and the threaded hole of the translation block fixedly connected to the bottom of the moving channel form a lead screw nut mechanism. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention.

[0020] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure of the channel part of the embodiment

[0021] Figure 3 yes Figure 1 Schematic diagram of a fixed channel slide rail of an embodiment.

[0022] Figure 4 yes Figure 1 A schematic diagram of the train outer door docking structure of an embodiment.

[0023] Figure 5 yes Figure 1 A schematic structural diagram of the locking mechanism of the embodiment in a disengaged state.

[0024] Figure 6 yes Figure 1 Schematic diagram of the locking mechanism in the hook-pull state of the embodiment.

[0025] Figure 7 yes Figure 1 A schematic diagram of the three-dimensional structure of a passenger pedal according to an embodiment.

[0026] Figure 8 yes Figure 1 A schematic diagram of the three-dimensional structure of the translation drive device of an embodiment.

[0027] Fig. 9 yes Figure 1 A schematic diagram of the three-dimensional structure of the sealed isolation door of an embodiment.

[0028] Fig.10 yes Figure 1 A schematic diagram of the three-dimensional structure of the isolation door of the embodiment.

[0029] In the figure: 1. Train, 2. Train outer door, 3. Docking port, 4. Moving channel, 5. Vacuum pipe wall, 6. Platform, 7. Platform floor, 8. Translation drive device, 9. Locking mechanism, 10. Sealing tarpaulin, 11. Fixed channel, 12. Support block, 13. Docking seal ring, 14. Slider, 15. Slide rail, 16. Screw, 17. Combination nut, 18. Connecting shaft, 19. Load-bearing wheel, 20. Connecting plate, 21. Push rod baffle, 22. Push rod, 23, sealed isolation door, 24, telescopic push rod, 25, cylinder body, 26, movable channel support end, 27, movable channel pedal, 28, pedal roller, 29, fixed channel pedal, 30, fixed channel support end, 31, docking groove, 32, locking column, 33, locking hook, 34, straightening push rod, 35, baffle, 36, straightening spring, 37, telescopic nut, 38, driving screw, 39, reducer, 40, motor, 41, collar support. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings and specific embodiments. The embodiments are only used to illustrate the present invention and are not used to limit the protection scope of the present invention.

[0031] Example 1

[0032] The train 1 of this embodiment travels through the vacuum pipe wall 5, and stops at the station for connection. Figure 1 As shown, the vacuum tube maglev train rapid boarding and alighting system is used for Figure 2 , including a fixed channel 11 fixedly connected to the platform 6 and a movable channel 4 with a sealing sleeve mounted on the fixed channel to form a horizontal movable pair, and a support block 12 is padded between the fixed channel 11 and the platform floor 7. The passageway of the platform 6 corresponding to the fixed channel 11 is equipped with a sealed isolation door 23 driven by a translation mechanism, and the end of the movable channel 4 adjacent to the train 1 has an arc-shaped port connection 3 matched with the train outer door 2, and the bottom of the movable channel 4 is supported by rollers on the track of the platform floor 7 facing the train outer door 2, and is connected to the translation drive device 8. The fixed channel 11 is sealedly connected to one end of the surrounding sealing tarpaulin 10, and the other end of the sealing tarpaulin 10 is sealedly connected to the movable channel 4. The sealing tarpaulin can withstand the pressure of atmospheric pressure and has a certain degree of extensibility. It can be extended or folded back with the movable channel 4 to always maintain a reliable seal at the connection. Figure 3 As shown, the fixed channel 11 forms a moving pair with the moving channel 4 through the horizontal slide rails 15 and sliders 14 on both sides to reduce the resistance when the moving channel 4 and the fixed channel 11 move relative to each other, and bear most of the mass of the moving channel 4, thereby ensuring stable expansion and contraction between the two.

[0033] See also Figure 4The arc-shaped end of the docking port 3 is equipped with a docking sealing ring 13 that can be embedded in the docking groove 31 of the train outer door 2, and hook-type locking mechanisms 9 corresponding to the corresponding lock columns 32 of the train outer door 2 are respectively installed on both sides of the docking port 3.

[0034] The specific structure of the hook type locking mechanism is as follows Figure 5 , Figure 6 As shown, it includes a lock hook 33 hinged at the end of a telescopic nut 37 with its hook opening facing downwards towards the corresponding lock column 32. The telescopic nut 37 forms a horizontal moving pair with the docking port 3 through a collar support 41 fixed on the docking port 3, and forms a spiral pair with an axially limited driving screw 38 (ball screw) supported on the docking port 3; the driving screw 38 is connected to the output shaft of the motor 40 through a reducer 39. A straightening push rod 34 extends upwards from the back of the lock hook 33, and a straightening spring 36 is installed between the straightening push rod 34 and a baffle 35 fixed on the docking port 3. When the telescopic nut 37 is driven by the rotation of the driving screw 38 to retract to the right, as shown in FIG. Figure 6 As shown, the straightening spring 36 will lose stability and deform, and drive the lock hook 33 to turn around the hinge support to hook the lock column 32 through the straightening push rod 34, and gradually tighten the lock column 32 as the telescopic nut 37 continues to retract to the right; when the telescopic nut 37 is driven to extend to the left, as shown in FIG. Figure 5 As shown, the straightening spring 36 drives the lock hook 33 to turn around the hinge pivot to the hook mouth and separate from the lock column 32 through the straightening push rod 34 to quickly rebound and reset. The locking mechanism ensures the sealing of the connection by tightening and pressurizing, and also has the function of maintaining a reliable connection in place, and the lock hook is hooked to the lock column by means of the unstable deformation of the straightening spring, so the structure is very simple.

[0035] The fixed channel 11 and the movable channel 4 are paved with Figure 7 The passenger pedal shown in the figure comprises a mobile channel pedal 27 whose one end is hinged on a mobile channel support end 26 fixed in the mobile channel 4, and a fixed channel pedal 29 whose one end is hinged on a fixed channel support end 30 fixed in the fixed channel 11. The mobile channel pedal 27 and the fixed channel pedal 29 have supporting convex ribs at the bottom respectively. The fixed channel pedal 29 is provided with gradually lowered slope surfaces 29-1 on both sides of one end adjacent to the mobile channel pedal 26, and the mobile channel pedal 26 is provided with pedal rollers 28 corresponding to the positions of the corresponding slope surfaces 29-1 on both sides of one end adjacent to the fixed channel pedal 29. Therefore, when the mobile channel extends out to connect with the fixed channel, the mobile channel pedal can gradually slide down from the original state of being stacked on the slope surface of the fixed channel pedal due to one end thereof, and is in a Figure 7 Shown in flattened position to facilitate passenger entry and exit.

[0036] like Figure 8As shown, rollers 4-1 are respectively installed on both sides of the bottom of the moving channel 4, which are supported on the track 7-1 of the platform floor 7 facing the outer door 2 of the train through the rollers 4-1, and are connected with the translation drive device 8. The translation drive device 8 at the bottom of the moving channel 4 includes a lead screw 8-1 driven by a rotary power source supported on a bearing seat on the platform floor, and the lead screw 8-1 and the threaded hole of the translation block 8-2 fixedly connected to the bottom of the moving channel 4 form a lead screw nut mechanism. When the lead screw is driven to rotate by the rotary power source, the moving channel and the docking port can be driven to telescopically move as needed through the lead screw nut mechanism.

[0037] One end of the fixed passage 11 is welded and sealed to the door frame of the sealed isolation door 23 of the platform 6. Fig. 9 , Fig.10 Combined with Figure 2 As shown, the four corners of the sealed isolation door 23 are supported by a pair of load-bearing wheels 19 on the corresponding door rails 6-1 of the platform 6 through connecting shafts 18, and the left and right connecting shafts 18 are fixedly connected by connecting plates 20, so it is more stable. Each load-bearing wheel 19 is respectively equipped with a cylinder body 25 and a tightening cylinder placed on the platform 6. The front end of the telescopic push rod 24 of the tightening cylinder is fixedly connected to the push rod 22 clamped by the upper and lower push rod baffles 21, and the push rod 22 is directly opposite to the corresponding position of the sealed isolation door 23. Four evenly distributed hydraulic cylinders 25 provide uniform pressing force when pressing. The translation mechanism at the fixed passageway includes a combination nut 17 fixedly connected to the upper connecting plate 20 of the sealed isolation door 23 through an extension arm. The combination nut 17 and the screw rod 16 driven by the motor 16-1 placed on the platform 6 form a spiral pair. Therefore, when the motor drives the screw rod to rotate, the sealed isolation door 23 can be driven to open and close and translate as needed through the combination nut. Eight load-bearing wheels in four pairs 19 reasonably distribute the weight of the isolation door and improve the stability of translation.

[0038] When the train arrives at the station, it stops at a fixed point. After the sensor on the docking port detects that the train has stopped accurately, the translation mechanism drives the moving channel and the docking port to move toward the train. The front end of the docking port is embedded in the docking groove of the train's outer door. The locking mechanism starts to buckle the lock column and tighten it, so that the sealing ring at the front end of the docking port is compressed to achieve a sealed connection between the docking port and the train's outer door. At the same time, the locking force sensor in the train's docking groove detects in real time whether the locking force is within a reasonable range; the re-pressure valve in the docking mechanism opens and returns to atmospheric pressure. After the gas pressure sensor detects that the gas reaches the standard atmospheric pressure, the tightening cylinder releases the pressure, the translation mechanism drives the sealed isolation door to open, and at the same time the train's outer door opens, the passenger channel unfolds, and passengers start to get on and off. After the passengers have finished getting on and off, the train's outer door and the sealed isolation door are closed, the locking mechanism disengages from the lock column, the moving channel retracts, and the train is ready to depart.

[0039] In summary, compared with the prior art, this embodiment has the following significant advantages:

[0040] 1) The mechanical locking and non-metallic sealing structure are used to ensure the overall sealing of the bridge is reliable;

[0041] 2) The non-metallic sealing structure replaces the traditional metal bellows sealing structure, which has small rebound force and long repeated service life;

[0042] 3) The screw nut mechanism is used as the translation drive device, taking into account high transmission efficiency, high positioning accuracy and long service life;

[0043] 4) The closing and opening of the isolation door is assisted by the tightening cylinder, which increases reliability;

[0044] 5) Automatically controlled sliding sealed isolation door is adopted, which is safe, reliable and space-saving;

[0045] 6) The position of the train's outer door is accurately located with the help of optical sensors, which improves the accuracy of docking.

Claims

1. A system for rapid boarding and alighting of passengers on a vacuum tube maglev train, comprising a fixed passage (11) fixedly connected to a platform (6) and a movable passage (4) with a sealing sleeve mounted on the fixed passage to form a horizontal movable pair, wherein a passageway of the platform corresponding to the fixed passage is provided with a sealed isolation door (23) driven by a translation mechanism, an end of the movable passage adjacent to the train (1) having a docking port (3) matched with an outer door (2) of the train, the bottom of the movable passage being supported on a track of the platform floor (7) facing the outer door of the train via rollers and being connected to a translation drive device (8); The end of the docking port is provided with a docking seal ring (13) embedded in a docking groove (31) of the train outer door, and hook-type locking mechanisms (9) corresponding to corresponding lock columns (32) of the train outer door are respectively provided on both sides of the docking port; The fixed channel is sealed to one end of a surrounding sealing tarpaulin (10), and the other end of the sealing tarpaulin is sealed to the movable channel; The four corners of the sealed isolation door are supported by load-bearing wheels (19) on the corresponding door rails of the platform, and each load-bearing wheel is provided with a cylinder body (25) and a tightening cylinder placed on the platform, and the front end of the telescopic push rod (24) of the tightening cylinder is directly opposite to the corresponding position of the sealed isolation door; The locking mechanism comprises a lock hook (33) hingedly mounted on the end of a telescopic nut (37) with a hook opening facing downwardly toward a corresponding lock column; the telescopic nut and the docking opening form a horizontal moving pair and form a spiral pair with an axial limit driving screw (38) supported on the docking opening; the lock hook (33) extends upwardly to form a straightening push rod (34), and a straightening spring (36) is arranged between the straightening push rod and a baffle (35) fixed on the docking opening; when the telescopic nut is driven to retract, the straightening spring drives the lock hook to turn around the hinge support to the hook opening through the straightening push rod to hook the lock column and gradually tighten the position; when the telescopic nut is driven to extend, the straightening spring drives the lock hook to turn around the hinge support to the hook opening through the straightening push rod to separate from the lock column to a quick reset position.

2. The system for rapid boarding and alighting of passengers on a vacuum tube maglev train according to claim 1, characterized in that: Passenger pedals are laid in the fixed channel and the movable channel, and the passenger pedals include a movable channel pedal (27) with one end hinged on the movable channel support end (26), and a fixed channel pedal (29) with one end hinged on the fixed channel support end (30); both sides of one end of the fixed channel pedal adjacent to the movable channel pedal are respectively provided with gradually descending slope surfaces, and both sides of one end of the movable channel pedal adjacent to the fixed channel pedal are respectively provided with pedal rollers (28) corresponding to the positions of the corresponding slope surfaces.

3. The system for rapid boarding and disembarking of vacuum tube maglev trains according to claim 2 is characterized in that: The fixed channel forms a moving pair with the moving channel through the slide rails (15) and the slider (14) structures on both sides.

4. The system for rapid boarding and alighting of passengers in a vacuum tube maglev train according to claim 3, characterized in that: The translation mechanism is composed of a combination nut (17) fixedly connected to the upper part of the sealed isolation door and a lead screw (16) driven by a motor arranged on the platform.

5. The system for rapid boarding and alighting of passengers in a vacuum tube maglev train according to claim 4, characterized in that: The front end of the telescopic push rod of the jacking cylinder is fixedly connected to the push rod clamped by the push rod baffles on the upper and lower sides, and the push rod is directly opposite to the corresponding position of the sealed isolation door.

6. The system for rapid boarding and disembarking of passengers in a vacuum tube maglev train according to claim 5, characterized in that: The translation driving device comprises a lead screw supported on a bearing seat on the platform ground, and the lead screw and a threaded hole of a translation block fixedly connected to the bottom of the moving channel form a lead screw nut mechanism.

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