Side evacuation ladder for rail transit vehicle and its control method

Abstract

The present invention provides a side evacuation ladder for a rail transit vehicle, which comprises a slide rail box, a pedal assembly and a driving mechanism; the slide rail box has a receiving space, and one end of the slide rail box has an opening communicating with the receiving space; the pedal assembly is slidably installed in the slide rail box and is received in the receiving space; the driving mechanism is installed in the slide rail box and is connected to the pedal assembly for completely pushing or partially pushing the pedal assembly out of the receiving space from the opening. At the same time, the present invention also provides a control method for the side evacuation ladder of a rail transit vehicle. Compared with the prior art, the side evacuation ladder and its control method provided by the present invention can improve the evacuation capacity, evacuation speed, and also improve the safety during the evacuation process.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transit, and particularly to a side evacuation ladder for a rail transit vehicle and a control method thereof. Background Art

[0002] As a carrier of passenger public transportation, a rail transit vehicle is designed based on the principle of safety. With the improvement of the intelligent level of rail transit vehicles, the requirements for the vehicle fire safety level have been correspondingly increased, and higher requirements have been put forward for the emergency evacuation ability of rail transit vehicles.

[0003] Currently, most rail transit vehicles such as subways are equipped with escape ladders at the vehicle head, and use end evacuation of the vehicle. However, there is no escape ladder in the middle of the vehicle, and the escape route for passengers in the middle of the vehicle is relatively long, making it difficult to improve the vehicle evacuation ability.

[0004] Currently, the ends of high-speed vehicles such as suburban trains, intercity multiple units, and high-speed multiple units adopt streamlined designs and are equipped with opening and closing mechanisms. It is impossible to configure evacuation escape ladders at the vehicle ends. Vehicles mostly adopt the scheme of delayed operation control in the fire mode and on-vehicle simple telescopic escape ladders and escape windows. The passenger escape routes are not fixed, and it is difficult to ensure the vehicle evacuation ability, which poses a certain risk to the lives of passengers in case of a vehicle fire. Therefore, how to provide a side evacuation and escape structure for a rail transit vehicle is an urgent problem to be solved in this field.

[0005] Moreover, when a rail transit vehicle is in emergency evacuation, the height of the docking location is not determined. Therefore, how to provide a side evacuation and escape structure for a rail transit vehicle that can adapt to evacuation requirements at different heights also needs to be considered. Summary of the Invention

[0006] Aiming at the technical problems of weak evacuation ability and slow evacuation speed in the prior art that rail transit vehicles use the scheme of configuring escape ladders at the vehicle head or adopting delayed operation control in the fire mode and on-vehicle simple telescopic escape ladders and escape windows for emergency evacuation. The present invention provides a side evacuation ladder for a rail transit vehicle, which can be installed at the bottom of the rail transit vehicle. When the rail transit vehicle is in emergency evacuation, it can evacuate passengers from the side of the vehicle, improve the evacuation ability, and increase the evacuation speed. And it can adapt to docking locations at different heights, further improving the evacuation ability, evacuation speed, and safety during the evacuation process. At the same time, it adopts a retractable structure and occupies a small space when installed on the rail transit vehicle, which can solve the problem of limited installation space for underframe equipment of the rail transit vehicle.

[0007] A side evacuation ladder for a rail transit vehicle includes a slide rail box, a pedal assembly, and a driving mechanism;

[0008] The slide rail box has a receiving space, and one end of the slide rail box has an opening communicating with the receiving space;

[0009] The pedal assembly is slidably installed on the slide rail box and is received in the receiving space;

[0010] The driving mechanism is installed on the slide rail box and is connected to the pedal assembly for completely pushing or partially pushing the pedal assembly out of the receiving space from the opening.

[0011] Preferably, it further includes a vehicle body pedal, the vehicle body pedal is arranged corresponding to the opening, and the vehicle body pedal can be driven by the pedal assembly or the driving mechanism to flip relative to the slide rail box.

[0012] Preferably, the slide rail box includes side beams and longitudinal beams;

[0013] There are two side beams, the two side beams are arranged relatively at intervals, and racks are arranged on the side beams;

[0014] Both ends of the longitudinal beam are respectively connected to the two side beams;

[0015] The opening is arranged at one end of the side beam.

[0016] Preferably, the driving mechanism includes a support plate, a driving rod, and a driving motor;

[0017] The support plate is slidably installed on the slide rail box and is connected to the pedal assembly;

[0018] The driving rod is rotatably installed on the support plate, and a traveling gear is arranged on the driving rod, and the traveling gear meshes with the rack;

[0019] The driving motor is installed on the support plate, and the output end is connected to the driving rod for driving the driving rod to rotate.

[0020] Preferably, the slide rail box further includes a cross beam, the cross beam is connected to the longitudinal beam, the setting direction of the cross beam is the same as the setting direction of the side beam, and a chute is opened on the cross beam;

[0021] A pulley is arranged on the support plate, and the pulley is arranged corresponding to the chute.

[0022] Preferably, the pedal assembly includes a first-level pedal and a second-level pedal;

[0023] The first-level pedal is slidably installed on the slide rail box, and the head end is rotatably connected to the driving mechanism;

[0024] The second-level pedal is slidably installed on the slide rail box, and the head end is rotatably connected to the tail end of the first-level pedal.

[0025] Preferably, the first-level pedal includes a first side beam and a first intermediate pedal;

[0026] The first side beam is slidably installed in the slide rail box, and the head end is rotatably connected to the driving mechanism;

[0027] The head end of the first intermediate pedal is rotatably connected to the head end of the first side beam through a first link assembly, and the tail end of the first intermediate pedal is rotatably connected to the tail end of the first side beam.

[0028] Preferably, the second-level pedal includes a second side beam, a second intermediate pedal, and a bottom pedal;

[0029] The second side beam is slidably installed in the slide rail box, and the head end is rotatably connected to the tail end of the first side beam;

[0030] The head end of the second intermediate pedal is rotatably connected to the head end of the second side beam through a second link assembly, and the tail end of the second intermediate pedal is rotatably connected to the middle part of the second side beam;

[0031] The head end of the bottom pedal is rotatably connected to the middle part of the second side beam through a third link assembly, and the middle part of the bottom pedal is rotatably connected to the tail end of the second side beam.

[0032] A control method for a side evacuation ladder of a rail transit vehicle as described in any one of the above, which includes the following steps:

[0033] S1. Trigger the evacuation ladder control switch;

[0034] S2. The evacuation ladder control unit detects the sensing signal;

[0035] S3. According to the sensing signal detected by the evacuation ladder control unit, start the setting device at the corresponding position, and at the same time, the driving mechanism pushes the pedal assembly out of the opening into the receiving space;

[0036] S4. The travel switch 1 on the driving mechanism touches the component on the started setting device, the driving mechanism circuit is disconnected, and the pedal assembly stops moving.

[0037] Preferably, the sensing signal in step S2 includes a vehicle zero-speed signal and a height sensing signal;

[0038] After step S4, it further includes:

[0039] S5. Trigger the evacuation ladder reset switch, the driving mechanism drives the pedal assembly to reset, the travel switch 2 on the driving mechanism touches the travel stop 2, the driving mechanism circuit is disconnected, and the pedal assembly stops moving.

[0040] Compared with the prior art, the side evacuation ladder for rail transit vehicles provided by the present invention includes a slide rail box, a pedal assembly, and a drive mechanism; the slide rail box has a receiving space, and one end of the slide rail box has an opening communicating with the receiving space; the pedal assembly is slidably installed in the slide rail box and is received in the receiving space; the drive mechanism is installed in the slide rail box and is connected to the pedal assembly for completely pushing or partially pushing the pedal assembly out of the receiving space from the opening. After the side evacuation ladder for rail transit vehicles is applied to rail transit vehicles, it can realize the evacuation of passengers from the side of the vehicle, improve the evacuation ability and speed. And the side evacuation ladder for rail transit vehicles can adapt to docking locations at different heights, further improve the evacuation ability, speed, and safety during the evacuation process. At the same time, the installation space required on the vehicle is small, which can solve the problem of the installation space limitation of the underframe equipment of rail transit vehicles. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0042] Figure 1 It is a schematic structural diagram when the pedal assembly of the side evacuation ladder for rail transit vehicles provided in an embodiment is completely pushed out;

[0043] Figure 2 For Figure 1 It is a schematic structural diagram when the pedal assembly of the side evacuation ladder for the rail transit vehicle shown is partially pushed out;

[0044] Figure 3 For Figure 1 It is a schematic structural diagram when the pedal assembly of the side evacuation ladder for the rail transit vehicle shown is received in the slide rail box;

[0045] Figure 4 For Figure 1 It is a schematic structural diagram of the vehicle body pedal shown;

[0046] Figure 5 For Figure 1 It is a schematic structural diagram of the slide rail box shown;

[0047] Figure 6 For Figure 1 It is a schematic structural diagram of the drive mechanism shown;

[0048] Figure 7 For Figure 1 It is a schematic structural diagram of the first-level pedal shown;

[0049] Figure 8 is Figure 1 a schematic structural view of the secondary pedal shown;

[0050] Figure 9 is a schematic flow chart of a control method for a side evacuation ladder of a rail transit vehicle provided by an embodiment;

[0051] Figure 10 is a schematic view of a control system for a side evacuation ladder of a rail transit vehicle provided by an embodiment. Specific embodiments

[0052] In order to enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

[0053] It should be noted that when a component is referred to as being "fixed to", "mounted on" or "disposed on" another component, it can be directly on the other component or indirectly disposed on the other component; when a component is "connected" to another component, or a component is referred to as being "connected to" another component, it can be directly connected to the other component or indirectly connected to the other component.

[0054] It should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing this application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to this application.

[0055] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, the meaning of "a plurality of" and "several" is two or more, unless otherwise specifically defined.

[0056] It should be noted that the structures, proportions, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those familiar with this technology to understand and read, and are not used to limit the implementation conditions of this application. Therefore, they do not have substantial technical significance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the efficacy and purpose that this application can achieve, should still fall within the scope covered by the technical content disclosed in this application.

[0057] The present invention provides a side evacuation ladder for a rail transit vehicle, which includes a slide rail box, a pedal assembly, and a driving mechanism; the slide rail box has a receiving space, and one end of the slide rail box has an opening communicating with the receiving space; the pedal assembly is slidably installed in the slide rail box and is received in the receiving space; the driving mechanism is installed in the slide rail box and is connected to the pedal assembly for completely pushing or partially pushing the pedal assembly out of the receiving space from the opening. After the side evacuation ladder for the rail transit vehicle is applied to the rail transit vehicle, it can realize the evacuation of passengers from the side of the vehicle, improve the evacuation ability and evacuation speed. And the side evacuation ladder for the rail transit vehicle can adapt to docking locations at different heights, further improve the evacuation ability, evacuation speed, and safety during the evacuation process. At the same time, the installation space required on the vehicle is small, which can solve the problem of the installation space limitation of the underframe equipment of the rail transit vehicle.

[0058] Please refer to Figures 1 to 10 This embodiment provides a side evacuation ladder 100 for a rail transit vehicle to meet the rapid evacuation needs of passengers in case of emergencies such as rail transit vehicle failures or fires, and improve the evacuation ability of the rail transit vehicle.

[0059] The side evacuation ladder 100 for the rail transit vehicle includes a slide rail box 10, a pedal assembly 20, and a driving mechanism 30. The slide rail box 10 can be installed on the underframe of the vehicle body 200, or the slide rail box 10 can be installed on the underframe equipment at the bottom of the vehicle body 200, and can be specifically connected and fixed by bolts. The slide rail box 10 has a receiving space 11, and one end of the slide rail box 10 has an opening 12 communicating with the receiving space 11. The pedal assembly 20 is slidably installed in the slide rail box 10, and the pedal assembly 20 is received in the receiving space 11. That is, the pedal assembly 20 is installed in the slide rail box 10 and is located in the receiving space 11, and at the same time, the pedal assembly 20 can slide in the slide rail box 10. The driving mechanism 30 is installed in the slide rail box 10, and the driving mechanism 30 is connected to the pedal assembly 20. The driving mechanism 30 is used to completely push or partially push the pedal assembly 20 out of the receiving space 11 from the opening 12.

[0060] That is to say, the driving mechanism 30 is used to provide a driving force to enable the pedal assembly 20 to slide in the slide rail box 10. In case of an emergency, the driving mechanism 30 can push the pedal assembly 20 so that the pedal assembly 20 slides out of the slide rail box 10, enabling passengers to escape through the pedal assembly 20. Moreover, the pushing stroke of the driving mechanism 30 on the pedal assembly 20 can be controlled, and the pedal assembly 20 can be completely pushed out or partially pushed out of the accommodation space 11, so that the part of the pedal assembly 20 pushed out can better adapt to the height of the current docking location.

[0061] It can be understood that in the prior art, rail transit vehicles adopt the scheme of configuring an escape ladder at the head of the vehicle, or due to the structural limitations of the vehicle, adopting the scheme of fire mode delayed operation control and on-vehicle simple telescopic escape ladders and escape windows for emergency evacuation, which have the technical problems of weak evacuation ability and slow evacuation speed.

[0062] The side evacuation ladder 100 of the rail transit vehicle provided in this embodiment can be installed at the bottom of the vehicle as needed, without being restricted by the vehicle structure and position. When emergency evacuation is required, by extending the pedal assembly 20, passengers can escape and evacuate from the side of the vehicle, which can improve the evacuation ability and speed. In the normal state, when the side evacuation ladder 100 of the rail transit vehicle is in the retracted state, the pedal assembly 20 can be retracted into the slide rail box 10. It has a small installation space and can be integrated above the underframe equipment, without occupying the installation space of the underframe equipment, and can solve the problem of tight installation space of the underframe equipment; the side evacuation ladder 100 of the rail transit vehicle adopts an underframe installation structure, which solves the problems of complex body structure with steps on the floor surface of the vehicle body entrance and great difficulty in strength design. Configuring the side evacuation ladder 100 of the rail transit vehicle has little impact on the current mature vehicle body structure and underframe equipment layout of the rail vehicle, reduces the design difficulty of the side evacuation scheme of the rail vehicle, and can improve the line condition adaptability and evacuation ladder operation efficiency of the side evacuation ladder 100 of the rail transit vehicle, thereby improving the evacuation ability of the vehicle. At the same time, the side evacuation ladder 100 of the rail transit vehicle selects different extended states of the pedal assembly 20 according to the height difference between the vehicle floor surface and the evacuation platform at the docking location, which can meet the needs of vehicles with different floor surface heights and evacuation platforms at different heights, further improving the evacuation ability and speed, and at the same time enabling the side evacuation ladder 100 of the rail transit vehicle to be more stably supported, improving the safety during the evacuation process. Moreover, by driving the pedal assembly 20 through the driving mechanism 30, it can also avoid being affected by human factors in case of an emergency.

[0063] Preferably, in one embodiment, the side evacuation ladder 100 of the rail transit vehicle further includes a car body pedal 40, and the car body pedal 40 is disposed corresponding to the opening 12. That is, the installation position of the car body pedal 40 corresponds to the opening 12. The car body pedal 40 can be driven by the pedal assembly 20 or the drive mechanism 30 to flip relative to the slide rail box 10. In one embodiment, the car body pedal 40 is fixed to the side beam of the car body 200 by a hinge, and the car body pedal 40 can be automatically reset by a spring hinge or a piston link structure or the like. In the normal state, the car body pedal 40 is in a vertical state under the driving force provided by a spring hinge or a piston link structure or the like, such as Figure 3 shown. In this state, the car body pedal 40 can be parallel to the side of the car body 200. That is to say, the car body pedal 40 is fixed to the side beam of the car body 200 by a hinge, and when retracted, it can be flush with the vehicle side wall, skirt board or equipment compartment, and can be used as a part of the skirt board or equipment compartment, without exceeding the vehicle gauge, ensuring the consistency of the vehicle appearance. The car body pedal 40 adopts components such as a spring hinge or a piston link reset mechanism and can be automatically reset when retracted. In an emergency, the pedal assembly 20 or the drive mechanism 30 can push open the car body pedal 40 and continuously abut and support the car body pedal 40, so that the car body pedal 40 can be used as the first grid pedal during evacuation, better ensuring safety.

[0064] Preferably, in one embodiment, the slide rail box 10 includes side beams 13 and longitudinal beams 14. There are two side beams 13, and the two side beams 13 are arranged at intervals relative to each other, and racks 131 are arranged on the side beams 13. The two ends of the longitudinal beam 14 are respectively connected to the two side beams 13, so that the slide rail box 10 as a whole has a frame structure. The opening 12 is disposed at one end of the side beam 13. Specifically, in one embodiment, there are two longitudinal beams 14, and the two longitudinal beams 14 are arranged at intervals relative to each other, and the two longitudinal beams 14 are respectively connected to the side beam 13, so as to better ensure the stability of the overall structure.

[0065] More preferably, in one embodiment, a guide pulley 132 is further arranged on the side beam 13, and the guide pulley 132 is located near the opening 12. The guide pulley 132 can realize the bidirectional movement of the drive mechanism 30 and the pedal assembly 20 in the slide rail box 10; the guide pulley 132 can support the pedal assembly 20 and guide the movement of the components in the pedal assembly 20 to realize the contraction of the pedal assembly 20.

[0066] Preferably, in one embodiment, the driving mechanism 30 includes a support plate 31, a driving rod 32, and a driving motor 33. The support plate 31 is slidably mounted on the slide rail box 10 and connected to the pedal assembly 20. The driving rod 32 is rotatably mounted on the support plate 31, and a traveling gear 321 is provided on the driving rod 32. The traveling gear 321 meshes with the rack 131. The driving motor 33 is mounted on the support plate 31, and the output end of the driving motor 33 is connected to the driving rod 32 to drive the driving rod 32 to rotate. By driving the driving rod 32 to rotate by the driving motor 33, the driving rod 32 can correspondingly drive the traveling gear 321 to rotate. Through the cooperation between the traveling gear 321 and the rack 131, the support plate 31 slides in the slide rail box 10. The support plate 31 is connected to the pedal assembly 20, so that the pedal assembly 20 can be synchronously driven to slide. By the forward and reverse rotation of the driving motor 33 to drive the traveling gear 321, the traveling gear 321 moves linearly on the rack 131, and finally the opening and contraction of the pedal assembly 20 are realized. Through this structure, the control transmission process can be made more stable and accurate, and the pedal assembly 20 can be better driven to open to the required position.

[0067] Preferably, in one embodiment, the slide rail box 10 further includes a cross beam 15. The cross beam 15 is connected to the longitudinal beam 14. The setting direction of the cross beam 15 is the same as the setting direction of the side beam 13, and a chute 151 is provided on the cross beam 15. A pulley 311 is provided on the support plate 31. The pulley 311 corresponds to the chute 151. Thus, when the driving motor 33 operates, through the cooperation and guidance between the pulley 311 and the chute 151, it can better ensure that the driving mechanism 30 moves linearly in the slide rail box 10 and guarantee the reliability during the driving process.

[0068] Specifically, in one embodiment, the side beam 13 and the cross beam 15 can be made of stainless steel or aluminum alloy materials, and a frame structure with higher strength can be formed by welding. The side beam 13 adopts a U-shaped structure, and the rack 131 is installed on the flat surface of the lower edge.

[0069] Specifically, in one embodiment, the support plate 31 includes a pedal support frame 312 and a guide support seat 313 connected to the pedal support frame 312. The drive rod 32 is rotatably mounted on the pedal support frame 312, the drive motor 33 is mounted on the guide support seat 313, and the pulley 311 is rotatably mounted on the guide support seat 313. More specifically, the pedal support frame 312 includes two drive mechanism side beams 3121 and a plate body 3122, the plate body 3122 is located between the two drive mechanism side beams 3121, and one end of the drive mechanism side beam 3121 is rotatably connected to the pedal assembly 20. Preferably, the plate body 3122 and the drive mechanism side beam 3121 are connected by bolts, so as to facilitate the installation of the drive rod 32.

[0070] Specifically, in one embodiment, the guide support seat 313 can be welded to form an integral support with the pedal support frame 312, the drive rod 32 is mounted on the drive mechanism side beam 3121 through a bearing, and the drive motor 33 is fixed to the guide support seat 313 through a bolt connection. A transmission gear 322 is also provided on the drive rod 32, and the drive motor 33 includes a motor 331 and a drive gear 332 mounted on the output shaft of the motor 331, and the drive gear 332 is meshed with the transmission gear 322. An interference fit is adopted between the drive rod 32 and the bearing on the drive mechanism side beam 3121, forming a drive structure that realizes the translation of the mechanism through the rotation of the motor 331.

[0071] Preferably, in one embodiment, the pedal assembly 20 includes a first-stage pedal 21 and a second-stage pedal 22, the first-stage pedal 21 is slidably mounted on the rail box 10, and the first end of the first-stage pedal 21 is rotatably connected to the drive mechanism 30. The first end of a component refers to an end of the component close to the drive mechanism 30, the tail end of the component refers to an end of the component away from the drive mechanism 30, and the middle of the component refers to a position area between the first end and the tail end of the component. The second-stage pedal 22 is slidably mounted on the rail box 10, and the first end of the second-stage pedal 22 is rotatably connected to the tail end of the first-stage pedal 21. That is, in one embodiment, at least two stages of pedals are provided in the pedal assembly 20, and the drive mechanism 30 can push pedals of different stages out of the rail box 10 by moving to different positions, so as to completely or partially push the pedal assembly 20 out of the receiving space 11. It can be understood that the pedal assembly 20 can be arranged in stages according to the height of different evacuation platforms. In this embodiment, only the second-stage pedal is used as an example for explanation.

[0072] Preferably, in one embodiment, the first-stage pedal 21 includes a first side beam 211 and a first intermediate pedal 212. The first side beam 211 is slidably mounted on the slide rail box 10, and the first end of the first side beam 211 is rotatably connected to the driving mechanism 30. The first end of the first intermediate pedal 212 is rotatably connected to the first end of the first side beam 211 through the first connecting rod assembly 213, and the tail end of the first intermediate pedal 212 is rotatably connected to the tail end of the first side beam 211. Through this structure, when the driving mechanism 30 pushes the first-stage pedal 21 out of the slide rail box 10, the first end of the first intermediate pedal 212 can be lowered relative to the first side beam 211 through the first connecting rod assembly 213, so that the first intermediate pedal 212 can be opened. In other words, the first-stage pedal 21 adopts a movable connecting rod structure, and the first intermediate pedal 212 can be retracted and opened through the guide pulley 132 and the travel limit rope of the first connecting rod assembly 213.

[0073] Preferably, in one embodiment, the secondary pedal 22 includes a second side beam 221, a second intermediate pedal 222, and a bottom pedal 223. The second side beam 221 is slidably mounted on the slide rail box 10, and the head end of the second side beam 221 is rotatably connected to the tail end of the first side beam 211. The head end of the second intermediate pedal 222 is rotatably connected to the head end of the second side beam 221 through a second connecting rod assembly 224, and the tail end of the second intermediate pedal 222 is rotatably connected to the middle part of the second side beam 221. The head end of the bottom pedal 223 is rotatably connected to the middle part of the second side beam 221 through a third connecting rod assembly 225, and the middle part of the bottom pedal 223 is rotatably connected to the tail end of the second side beam 221. Through this structure, when the driving mechanism 30 pushes the secondary pedal 22 out of the slide rail box 10, the head end of the second intermediate pedal 222 can be lowered relative to the second side beam 221 through the second connecting rod assembly 224 to realize the opening of the second intermediate pedal 222; the head end of the bottom pedal 223 can be lowered relative to the second side beam 221 through the third connecting rod assembly 225 to realize the opening of the bottom pedal 223. In other words, the secondary pedal 22 adopts a movable connecting rod structure, and the retraction and opening of each pedal in the secondary pedal 22 can be realized through the guide 132 pulley and the connecting rod travel limit rope; when opened, the bottom pedal 223 is supported on the evacuation platform to form an effective support, avoid the evacuation ladder from being suspended in the air, and reduce the strength requirements of the evacuation ladder structure.

[0074] Specifically, in one embodiment, pin connections are used between the first side beam 211 and the drive mechanism side beam 3121, and between the second side beam 221 and the first side beam 211. Angle limit chamfers are provided on each side beam, thereby realizing the setting of the inclination of the steps of the evacuation ladder 100 and the step-by-step opening of the pedals.

[0075] Specifically, in one embodiment, the first link assembly 213 includes a first link 2131 and a second link 2132. One end of the first link 2131 is connected to the first side beam 211 by a pin. One end of the second link 2132 is connected to the other end of the first link 2131 by a pin, and the other end of the second link 2132 is connected to the first intermediate pedal 212 by a pin. By the mutual folding between the first link 2131 and the second link 2132, the first intermediate pedal 222 can be contracted, making the overall structure more compact.

[0076] Specifically, in one embodiment, the second link assembly 224 includes a third link 2241 and a fourth link 2242. One end of the third link 2241 is connected to the second side beam 221 by a pin. One end of the fourth link 2242 is connected to the other end of the third link 2241 by a pin, and the other end of the fourth link 2242 is connected to the second intermediate pedal 222 by a pin. By the mutual folding between the third link 2241 and the fourth link 2242, the second intermediate pedal 222 can be contracted, making the overall structure more compact.

[0077] Specifically, in one embodiment, the third link assembly 225 includes a fifth link 2251 and a sixth link 2252. One end of the fifth link 2251 is connected to the second side beam 221 by a pin. One end of the sixth link 2252 is connected to the other end of the fifth link 2251 by a pin, and the other end of the sixth link 2252 is connected to the bottom pedal 223 by a pin. By the mutual folding between the fifth link 2251 and the sixth link 2252, the bottom pedal 223 can be flipped, making the overall structure more compact.

[0078] The guide pulley 132 can support the side beams of the pedal assembly 20 and guide the movement of the links in the pedal assembly 20, realizing the contraction of the pedals in the pedal assembly 20.

[0079] Specifically, in one embodiment, the bottom pedal 223 adopts a right-angled structure. The bottom pedal 223 includes a pedal 2231 and a support plate 2232. When the bottom pedal 223 is opened, the support plate 2232 supports on the evacuation platform, forming an effective support.

[0080] Specifically, in one embodiment, the side evacuation ladder 100 of the rail transit vehicle further includes an evacuation ladder control system, which includes an evacuation ladder control unit, position setting device 1, position setting device 2, travel stop 1, travel stop 2, travel switch 1, and travel switch 2. The evacuation ladder control unit can receive the height signal transmitted by the platform height sensor and the vehicle zero-speed signal, and both the evacuation control unit and the drive mechanism 30 are powered by a storage battery. The evacuation control unit can be installed on the slide rail box 10. The position setting device 1 and the position setting device 2 are both installed on the slide rail box 10 and are located at different positions. The position setting device 1 and the position setting device 2 are used to control the pushing stroke of the drive mechanism 30 on the pedal assembly 20. The travel stop 1 and the travel stop 2 are both installed on the slide rail box 10 and are located at different positions. The travel stop 1 and the travel stop 2 are used to control the operating limit position of the drive mechanism 30. The travel switch 1 and the travel switch 2 are both installed on the drive mechanism 30. The position setting device 1, the position setting device 2, and the travel stop 1 are set corresponding to the travel switch 1. The travel stop 2 is set corresponding to the travel switch 2. In one embodiment, the position setting device 1 and the position setting device 2 can adopt a retractable structure.

[0081] When the vehicle is in normal operation, the evacuation ladder 100 is in a retracted state. The drive mechanism 30, the first-level pedal 21, and the second-level pedal 22 are retracted into the slide rail box 10. The vehicle body pedal 40 is flush with the side beam of the vehicle body 200. The support plate 2232 of the bottom pedal 223 is parallel to the vehicle body pedal 40. The space occupied by the structure of the evacuation ladder 100 is the smallest, and it can be consistent with the vehicle skirt and the cross-section of the equipment compartment, having little impact on the installation space of the vehicle skirt, equipment compartment, and underframe equipment.

[0082] It can be understood that the side evacuation ladder 100 of the rail transit vehicle has a small installation space and can be installed under the vehicle door as needed, without being restricted by the vehicle structure and position. It can also be used as a temporary boarding ladder for the vehicle to meet the temporary boarding needs such as vehicle line operations and vehicle exhibitions; the vehicle body pedal 40 can be cancelled when the height of the vehicle body underframe side beam is smaller than the set height of the step, and can be replaced by the pedal support frame 312 in the drive mechanism 30; the gear drive mechanism in the drive mechanism 30 can be replaced by a worm and gear or pulley mechanism; a manual chain or pull rope can also be added to the drive rod 32 to meet the opening and retraction of the evacuation ladder 100 in a power-off state; the second-level pedal 22 can be divided into a structure that can be opened and retracted step by step according to the needs of the evacuation platform working conditions.

[0083] Meanwhile, in one embodiment, a control method for the side evacuation ladder 100 of the rail transit vehicle is also provided, which includes the following steps:

[0084] S1. Trigger the evacuation ladder control switch;

[0085] Specifically, during emergency evacuation, the button control switch for controlling the side evacuation ladder 100 of the vehicle can be pressed by passengers or crew members.

[0086] S2. The evacuation ladder control unit detects the sensing signal;

[0087] S3. According to the sensing signal detected by the evacuation ladder control unit, start the setting device at the corresponding position, and at the same time, the driving mechanism pushes the pedal assembly out of the opening into the receiving space;

[0088] S4. The travel switch 1 on the driving mechanism touches the activated setting device, the circuit of the driving mechanism is disconnected, and the pedal assembly stops moving.

[0089] Preferably, in one embodiment, the sensing signal in step S2 includes the vehicle zero-speed signal and the height sensing signal; thus, the running safety can be better ensured.

[0090] After step S4, it further includes:

[0091] S5. Trigger the evacuation ladder reset switch, the driving mechanism drives the pedal assembly to reset, the travel switch 2 on the driving mechanism touches the travel stop 2, the circuit of the driving mechanism is disconnected, and the pedal assembly stops moving.

[0092] For example, in one embodiment, when the evacuation ladder control unit in S2 detects the corresponding vehicle zero-speed signal and height sensing signal;

[0093] S3 controls the position setting device 1 or the position setting device 2 to extend;

[0094] When the travel switch 1 on the driving mechanism in S4 touches the position setting device 1 or the position setting device 2, the circuit of the driving mechanism is disconnected, and the pedal assembly stops moving. In this way, the full extension or partial extension of the pedal assembly 20 is realized.

[0095] The evacuation ladder 100 is controlled by an independent control unit, which can automatically detect the platform height and automatically set the opening position of the evacuation ladder 100 according to the platform height, realizing the hierarchical automatic control of the evacuation ladder 100.

[0096] It can be understood that according to the required number of control levels, more position setting devices can be set, so as to adapt to more heights.

[0097] Among them, the control switch and the reset switch can be set at a position in the vehicle near the door, and the two buttons are controlled in a linkage manner.

[0098] The above are only the embodiments of the present invention. It should be noted here that for those of ordinary skill in the art, improvements can be made without departing from the inventive concept of the present invention, but these all fall within the protection scope of the present invention.

Claims

1. A side evacuation ladder for rail transit vehicles, characterized in that, It includes a slide rail box, a pedal assembly, and a driving mechanism; The slide rail box has a receiving space, and one end of the slide rail box has an opening communicating with the receiving space; The pedal assembly is slidably mounted on the slide rail box and is received in the receiving space; The driving mechanism is mounted on the slide rail box and is connected to the pedal assembly to completely push or partially push the pedal assembly out of the receiving space from the opening; The pedal assembly includes a first-level pedal and a second-level pedal; The first-level pedal is slidably mounted on the slide rail box, and the head end is rotatably connected to the driving mechanism; The second-level pedal is slidably mounted on the slide rail box, and the head end is rotatably connected to the tail end of the first-level pedal; The first-level pedal includes a first side beam and a first intermediate pedal, and the head end of the first side beam is rotatably connected to the driving mechanism; The second-level pedal includes a second side beam and a second intermediate pedal, and the head end of the second side beam is rotatably connected to the tail end of the first side beam; Angle limiting chamfers are provided on each side beam.

2. The side evacuation ladder for rail transit vehicles according to claim 1, characterized in that, It further includes a vehicle body pedal, the vehicle body pedal is arranged corresponding to the opening, and the vehicle body pedal can be driven by the pedal assembly or the driving mechanism to flip relative to the slide rail box.

3. The side evacuation ladder for rail transit vehicles according to claim 2, characterized in that, The slide rail box includes side beams and longitudinal beams; There are two side beams, the two side beams are arranged relatively spaced apart, and racks are provided on the side beams; Both ends of the longitudinal beam are respectively connected to the two side beams; The opening is provided at one end of the side beam.

4. The side evacuation ladder for rail transit vehicles according to claim 3, characterized in that, The driving mechanism includes a support plate, a driving rod, and a driving motor; The support plate is slidably mounted on the slide rail box and is connected to the pedal assembly; The driving rod is rotatably mounted on the support plate, and a traveling gear is provided on the driving rod, and the traveling gear meshes with the rack; The driving motor is mounted on the support plate, and the output end is connected to the driving rod to drive the driving rod to rotate.

5. The side evacuation ladder for rail transit vehicles according to claim 4, characterized in that, The slide rail box further includes a cross beam, the cross beam is connected to the longitudinal beam, the setting direction of the cross beam is the same as the setting direction of the side beam, and a chute is provided on the cross beam; Pulleys are provided on the support plate, and the pulleys are arranged corresponding to the chute.

6. The side evacuation ladder for rail transit vehicles according to claim 1, characterized in that, The first side beam is slidably mounted on the slide rail box; The head end of the first intermediate pedal is rotatably connected to the head end of the first side beam through a first link assembly, and the tail end of the first intermediate pedal is rotatably connected to the tail end of the first side beam.

7. The side evacuation ladder for rail transit vehicles according to claim 6, wherein The second-level pedal further includes a bottom pedal; The second side beam is slidably mounted on the slide rail box; The head end of the second intermediate pedal is rotatably connected to the head end of the second side beam through a second link assembly, and the tail end of the second intermediate pedal is rotatably connected to the middle part of the second side beam; The head end of the bottom pedal is rotatably connected to the middle part of the second side beam through a third link assembly, and the middle part of the bottom pedal is rotatably connected to the tail end of the second side beam.

8. A control method for the side evacuation ladder of a rail transit vehicle according to any one of claims 1 to 7, characterized in that, It includes the following steps: S1. Trigger the evacuation ladder control switch; S2. The evacuation ladder control unit detects the sensing signal; S3. According to the sensing signal detected by the evacuation ladder control unit, start the setting device at the corresponding position, and at the same time, the driving mechanism pushes the pedal assembly out of the receiving space from the opening; S4. The travel switch 1 on the drive mechanism touches a component on the activated device that has been started, the drive mechanism circuit is disconnected, and the pedal assembly stops moving.

9. The control method of the side evacuation ladder of the rail transit vehicle according to claim 8, characterized in that The sensing signals in step S2 include a vehicle zero-speed signal and a height sensing signal; After step S4, it further includes: S5. Trigger the evacuation ladder reset switch, the drive mechanism drives the pedal assembly to reset, the travel switch 2 on the drive mechanism touches the travel stop 2, the drive mechanism circuit is disconnected, and the pedal assembly stops moving.

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