Full-height platform safety door

Abstract

The invention relates to the technical field of traffic facilities, and particularly discloses a full-height platform safety door which comprises two fixed doors, two sliding doors and a top box. A synchronous belt and a guide rod are mounted in the top box; two sliding sleeves are fixed on each sliding door, a driving sleeve is arranged between the two sliding sleeves, buffer springs are arranged between the driving sleeve and the sliding sleeves, and the driving sleeve is connected with the synchronous belt through a traction arm; two telescopic containers are arranged in the top box; the close ends of the two telescopic containers are fixedly connected with the two traction arms, and the far ends of the two telescopic containers are fixedly connected with the top box. Vertical airbags are fixed to the rear sides of the sliding doors, and transverse airbags are fixed to the rear side of the top box. When the full-height type platform safety door is in an open state, the transverse air bag and the vertical air bag can partition the safety gap, energy loss caused by air flowing is reduced, personnel or objects can be prevented from being clamped into the safety gap, safety is remarkably improved, and the full-height type platform safety door is simple in structure, efficient and stable in transmission performance, low in implementation cost and suitable for popularization and application. And damage to an external coating of the train can be avoided.

Description

Technical Field

[0001] The invention relates to the technical field of transportation facilities, and in particular to a full-height platform safety door. Background Art

[0002] The full-height platform safety door is a safety protection facility for urban rail transit platforms. It is usually composed of fixed doors, sliding doors and top boxes, extending from the platform floor to the ceiling area, achieving complete isolation between the platform and the track area, effectively reducing the risk of passengers falling onto the track, and reducing air exchange between the platform and the tunnel, reducing the energy consumption of the air-conditioning system. To ensure the safe operation of the train, a 20-30 cm safety gap must be reserved between the full-height platform safety door and the train. When the full-height platform safety door is opened, the anti-stepping rubber strip installed on the edge of the platform can block the safety gap at the bottom of the door, but the safety gaps on the left and right sides and the top of the door connect the station pavilion to the tunnel. The negative pressure effect generated by the tunnel heat exhaust system will trigger two-way air flow and heat and mass exchange, which significantly increases the air conditioning load of the station hall and causes the cooling energy consumption to rise.

[0003] The invention patent with announcement number CN113266239B discloses an energy-saving screen door system for rail transit platforms. By setting up transverse shielding plates and vertical shielding plates, the safety gap can be blocked to avoid energy loss caused by heat and mass exchange. In this technical solution, the state adjustment of the transverse shielding plates and the vertical shielding plates needs to rely on a separate drive device and control system as well as a complex transmission mechanism. The structure is relatively complex, and the construction and operating costs are high. At the same time, every time the train stops, there is a certain difference in the size of the safety gap, making it difficult to ensure that the transverse shielding plates and the vertical shielding plates are in close contact with the train without damage, and the partition effect still needs to be improved. Summary of the invention

[0004] In order to solve the deficiencies in the prior art, the present invention provides a full-height platform safety door, which is based on the structure of the existing full-height platform safety door. By reasonably arranging telescopic containers, horizontal airbags and vertical airbags, the safety gap is effectively blocked, the heat and mass exchange between the tunnel and the station hall is reduced, and the air-conditioning load and refrigeration energy consumption of the station hall are reduced.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions: A full-height platform safety door comprises two fixed doors arranged at intervals, two sliding doors located at the rear of the fixed doors and a top box; a traction mechanism consisting of a driving motor, a synchronous belt and two pulleys is installed in the top box, the synchronous belt comprises two straight sections, a guide rod extending in the travel direction of the sliding door is fixed in the top box; two sliding sleeves arranged at intervals and sleeved on the guide rod are fixed on each sliding door; a driving sleeve slidably matched with the guide rod is arranged between the two sliding sleeves on the same sliding door, and a buffer spring is arranged between the driving sleeve and the sliding sleeves on both sides thereof spring; the driving sleeves above the two sliding doors are fixedly connected to the two straight sections via traction arms; two telescopic containers filled with gas are arranged in the top box; the ends of the two telescopic containers close to each other are fixedly connected to the two traction arms, and the ends of the two telescopic containers far from each other are fixedly connected to the top box; vertical airbags are fixed to the rear sides of the ends close to the two sliding doors, and a transverse airbag is fixed to the rear side of the top box, and the transverse airbags are connected to the two telescopic containers via gas hoses; the two vertical airbags are connected to the two telescopic containers via gas hoses.

[0006] In a preferred embodiment, the synchronous belt is made of rubber or polyurethane, has a steel wire rope embedded therein, and the synchronous belt and the pulley are provided with a matching toothed structure.

[0007] In a preferred embodiment, two drive motors are provided, which are respectively connected to two pulleys for transmission.

[0008] In a preferred embodiment, a support seat is fixed above each of the two fixed doors, and both ends of the guide rod are rotatably connected to the two support seats respectively; and the two pulleys are rotatably connected to the two support seats respectively.

[0009] In a preferred embodiment, a ground rail is provided on the lower side of the sliding door to provide support thereto, and limiting steps are provided on the two fixed doors to limit the travel of the sliding door.

[0010] In a preferred embodiment, two guide cylinders are fixed above the two fixed doors, the opposite ends of the two guide cylinders are open ends, the two telescopic containers are respectively located in the two guide cylinders, and the sides of the guide cylinders are provided with slots for the traction arm to move.

[0011] In a preferred embodiment, the main body of the telescopic container is a bellows made of elastic material, and both ends of the bellows are sealed by sealing plugs.

[0012] In a preferred embodiment, the transverse airbag and the vertical airbag are made of elastic material, are hollow inside, and have surrounding side walls with an annular corrugated structure.

[0013] Compared with the prior art, the full-height platform safety door in the present invention has the following beneficial technical effects: 1. When the full-height platform screen door is in the open state, the horizontal airbag and the vertical airbag can cut off the safety gaps on the left and right sides and the upper side of the door opening, reduce the energy loss caused by air flow, and prevent people or objects from getting stuck in the safety gaps, significantly improving safety. When the full-height platform screen door is in the closed state, the horizontal airbag and the vertical airbag remain in a contracted state, avoiding rubbing against the running train.

[0014] 2. During the operation of the full-height platform screen door, power is provided by the traction mechanism, and energy is transmitted through the telescopic container. While adjusting the opening and closing state of the sliding door, the working states of the horizontal airbag and the vertical airbag are automatically adjusted. There is no need to set up separate driving devices and control devices, nor complex mechanical transmission structures such as wheels and axles. The overall structure is simple and the transmission performance is highly efficient and stable, significantly reducing the implementation cost and operation cost.

[0015] 3. The full-height platform screen door uses the horizontal airbag and the vertical airbag to cut off the safety gaps. The horizontal airbag and the vertical airbag are soft and have good deformation ability, capable of making non-destructive contact with the outside of the train tightly and evenly, with a stable sealing effect and adaptable to the size change of the safety gaps.

[0016] 4. When the full-height platform screen door opens, after the sliding door stops moving, the horizontal airbag and the vertical airbag continue to expand to make sealed contact with the train; correspondingly, when the full-height platform screen door closes, the horizontal airbag and the vertical airbag contract first to separate from the train, and then the two sliding doors slide towards the middle; this operation mode can effectively prevent the horizontal airbag and the vertical airbag from rubbing and scratching against the train during the movement of the sliding door, extending the working life and avoiding damage to the external coating of the train.

[0017] 5. During the opening and closing process of the full-height platform screen door, the driving sleeve transmits the driving force through the buffer spring, which can effectively reduce the impact on the sliding door caused by the start and stop of the driving motor, improve the smoothness of the sliding door, and significantly reduce the occurrence of pinching accidents. Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description only relate to some embodiments of the present invention and do not limit the present invention.

[0019] Figure 1 It is a schematic front view structure of the full-height platform screen door in the embodiment.

[0020] Figure 2 It is a schematic rear view structure of the full-height platform screen door in the embodiment.

[0021] Figure 3One of the schematic diagrams of the internal structure of the top box in the embodiment.

[0022] Figure 4 Another schematic diagram of the internal structure of the top box in the embodiment.

[0023] Figure 5 One of the schematic diagrams of the partial internal structure of the top box in the embodiment.

[0024] Figure 6 Another schematic diagram of the partial internal structure of the top box in the embodiment.

[0025] Figure 7 Schematic diagram of the structure of the horizontal airbag and the vertical airbag in the embodiment.

[0026] Figure 8 Schematic diagram of the air path connection of the telescopic container, the horizontal airbag and the vertical airbag in the embodiment.

[0027] Figure 9 Schematic diagram of the state when the traction arm continues to move after the two sliding doors are closed.

[0028] Figure 10 Schematic diagram of the state when the traction arm continues to move after the two sliding doors are opened.

[0029] Figure 11 Schematic diagram of the contracted state of the horizontal airbag and the vertical airbag in the embodiment.

[0030] Figure 12 Schematic diagram of the extended state of the horizontal airbag and the vertical airbag in the embodiment.

[0031] In the figure, 1. fixed door, 2. top box, 3. sliding door, 4. ground rail, 5. horizontal airbag, 6. third joint, 7. second joint, 8. vertical airbag, 9. support seat, 10. drive motor, 11. guide rod, 12. synchronous belt, 13. guide cylinder, 14. drive sleeve, 15. sliding sleeve, 16. closing spring, 17. traction arm, 18. opening spring, 19. limiting step, 20. telescopic container, 201. bellows, 202. sealing plug, 21. first joint, 22. pulley, 23. slot. Detailed implementation manners

[0032] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present invention without creative efforts shall fall within the scope of protection of the present invention.

[0033] Refer toFigures 1 - 8 As shown in Figures 1 - 8 , an embodiment discloses a full-height platform screen door, which includes two fixed doors 1 and two sliding doors 3 erected on the ground, and a top box 2 located above the fixed doors 1 and the sliding doors 3; the two fixed doors 1 are spaced apart and fixedly connected to the top box 2, and a rectangular doorway is formed among the three; the two sliding doors 3 are located at the rear side of the fixed doors 1, that is, on the side of the fixed doors 1 close to the track area, and the two sliding doors 3 can move positions within a straight-line stroke to adjust the opening and closing state of the doorway. A traction mechanism composed of a driving motor 10, a synchronous belt 12 and two belt pulleys 22 is installed in the top box 2; the synchronous belt 12 is in a closed-loop shape, supported by the two belt pulleys 22, and two straight-line sections are formed which are distributed up and down and have opposite movement directions, and the extending directions of the two straight-line sections are the same as the stroke direction of the sliding door 3; a guide rod 11 is fixed in the top box 2, and the guide rod 11 extends along the stroke direction of the sliding door 3. Two sliding sleeves 15 sleeved on the guide rod 11 and spaced apart are fixed on each sliding door 3; a driving sleeve 14 is arranged between the two sliding sleeves 15 on the same sliding door 3, the driving sleeve 14 is sleeved on the guide rod 11 and the two are slidably matched, and a buffer spring is arranged between the driving sleeve 14 and each of the two sliding sleeves 15 on its two sides; when the driving sleeve 14 applies a driving force to the sliding door 3 through the buffer spring, the buffer spring can drive the sliding door 3 to move in an incompletely compressed state; for the convenience of elaborating the technical solution in detail, the buffer spring close to the middle of the guide rod 11 is hereinafter referred to as the closing spring 16, and the buffer spring far from the middle of the guide rod 11 is hereinafter referred to as the opening spring 18; the two driving sleeves 14 above the two sliding doors 3 are respectively fixedly connected to the two straight-line sections through traction arms 17. Two telescopic containers 20 spaced apart along the direction of the guide rod 11 are arranged in the top box 2, and the telescopic containers 20 can telescopically deform along the extending direction of the guide rod 11 so that the inner cavity volume changes, and the telescopic containers 20 are filled with gas; the closer end parts of the two telescopic containers 20 are respectively fixedly connected to the two traction arms 17, the farther end parts of the two telescopic containers 20 are respectively fixedly connected to the top box 2, and a first joint 21 is connected to the telescopic container 20. On the rear sides of the adjacent ends of the two sliding doors 3, vertical air bags 8 extending in the vertical direction are respectively fixed. On the rear side of the top box 2, a horizontal air bag 5 extending in the horizontal direction is fixed. The horizontal air bag 5 is located above the two vertical air bags 8. Both the horizontal air bag 5 and the vertical air bags 8 can expand and contract in the front-rear direction accordingly according to the change of the internal air pressure. Specifically, when the gas inside the horizontal air bag 5 and the vertical air bags 8 increases and the pressure rises, they will extend backward. On the contrary, they will contract forward. The horizontal air bag 5 is connected with a second joint 7, and the second joint 7 is communicated with the first joints 21 of the two telescopic containers 20 through an air delivery hose. The vertical air bags 8 are connected with third joints 6, and the third joints 6 of the two vertical air bags 8 are respectively communicated with the first joints 21 of the two telescopic containers 20 through an air delivery hose.

[0034] The working principle of this full-height platform screen door is as follows: Refer to Figure 3 、 Figure 4 、 Figure 9 、 Figure 12 As shown in, when this full-height platform screen door is opened, the driving motor 10 outputs power in one direction, usually forward rotation. The synchronous belt 12 drives the two driving sleeves 14 to move synchronously in opposite directions through the traction arms 17, making them move away from each other. At first, as the driving sleeves 14 move, the closing spring 16 gradually extends, and the opening spring 18 gradually compresses. During this process, the sliding doors 3 do not move synchronously with the driving sleeves 14 until the thrust exerted by the opening spring 18 on the sliding sleeve 15 is sufficient to drive the sliding doors 3 to move, then the two sliding doors 3 gradually move away. During the movement of the traction arms 17, the two telescopic containers 20 are forced to contract, and the gas in the telescopic containers 20 enters the horizontal air bag 5 and the vertical air bags 8, making the horizontal air bag 5 and the vertical air bags 8 extend backward. After the two sliding doors 3 are fully opened and cannot move anymore, but at this time the opening spring 18 is not fully compressed. The synchronous belt 12 will drive the two traction arms 17 to continue to move in the original direction, making the telescopic containers 20 continue to contract, and the horizontal air bag 5 and the vertical air bags 8 continue to extend backward, and finally contact the train. Thus, the safety gaps on the left and right sides and the upper side of the doorway are blocked. On the one hand, the air flow between the tunnel and the station hall is avoided, reducing energy loss. On the other hand, the two vertical air bags 8 block the safety gaps on both sides of the doorway, preventing people or objects from getting stuck in the safety gaps, significantly improving safety.

[0035] Refer to Figure 3 、 Figure 4 、 Figure 10 、 Figure 11As shown, when the full-height platform safety door is closed, the driving motor 10 outputs power in the other direction, usually in reverse, and the synchronous belt 12 pulls the two driving sleeves 14 to move synchronously in opposite directions through the traction arm 17, so that they are close to each other; initially, as the driving sleeve 14 moves, the door opening spring 18 gradually stretches, and the door closing spring 16 gradually compresses. During this process, the sliding door 3 does not move synchronously with the driving sleeve 14, but the telescopic container 20 is driven by the traction arm 17 to stretch, so that the gas in the transverse airbag 5 and the two vertical airbags 8 flows back into the telescopic container 20, and the transverse airbag 5 and the vertical airbag 8 are compressed. When the thrust exerted by the door closing spring 16 on the sleeve 15 is sufficient to drive the sliding door 3 to move, the two sliding doors 3 will gradually approach each other; after the two sliding doors 3 reach the closed state, they cannot move any closer, but at this time the door closing spring 16 is in an incompletely compressed state, and the synchronous belt 12 will drive the two traction arms 17 to continue moving in the original direction, so that the door closing spring 16 is further compressed to ensure that the two sliding doors 3 can stably maintain the closed state; at the same time, as the two telescopic containers 20 extend, the transverse airbags 5 and the vertical airbags 8 gradually shrink to the minimum size to avoid scratching against the moving train.

[0036] During the operation of the full-height platform safety door, the traction mechanism provides power, and energy is transmitted through the telescopic container 20, so that the working state of the transverse airbag 5 and the vertical airbag 8 can be automatically adjusted with the opening and closing of the sliding door 3, without the need to set up a separate drive device and control device, nor the need to set up complex mechanical transmission structures such as wheels and shafts. The overall structure is simple and the transmission performance is efficient and stable, and the implementation cost and operating cost are low. As a pneumatic power device, the telescopic container 20 is easier to achieve sealing than the existing commonly used piston pneumatic power device, and the implementation cost is low, and the working performance is stable.

[0037] The full-height platform safety door utilizes transverse airbags 5 and vertical airbags 8 to separate the safety gaps on both sides and the upper side of the door. The transverse airbags 5 and the vertical airbags 8 are soft and have good deformation capabilities. They can closely and evenly make lossless contact with the outside of the train, thereby improving the sealing effect and adapting to changes in the size of the safety gap.

[0038] When the full-height platform safety door is opened, the transverse airbag 5 and the vertical airbag 8 will not be fully extended during the movement of the two sliding doors 3. When the sliding doors 3 stop moving, the transverse airbag 5 and the vertical airbag 8 continue to extend to make sealing contact with the train; correspondingly, when the two sliding doors 3 are closed, the transverse airbag 5 and the vertical airbag 8 will first shrink to separate from the train, and then the two sliding doors 3 will slide toward the middle; this operating mode can effectively prevent the transverse airbag 5 and the vertical airbag 8 from rubbing and scratching against the train during the movement of the sliding doors 3, thereby extending the working life and avoiding damage to the outer coating of the train.

[0039] During the opening and closing process of the full-height platform safety door, the buffer spring realizes the flexible transmission of power, effectively reducing the impact on the sliding door 3 caused by the start and stop of the drive motor 10, making the force fluctuation of the sliding door 3 more gentle and the operation more stable; what is more important is that when the sliding door 3 clamps the human body during the closing process, the buffer spring can buffer the clamping force of the two sliding doors 3 and provide an opportunity for the trapped person to be pulled out, which, together with the anti-pinch function commonly configured in the existing safety door system, can significantly reduce the occurrence of pinching accidents.

[0040] Preferably, the synchronous belt 12 , as a transmission component, is made of rubber or polyurethane and has an embedded steel wire rope. The synchronous belt 12 and the pulley 22 are provided with a matching tooth structure to achieve non-slip transmission and improve the position adjustment accuracy of the two sliding doors 3 .

[0041] Preferably, Figure 3 As shown, there are two drive motors 10, which are respectively connected to the two pulleys 22. When one drive motor 10 fails, the other drive motor 10 ensures the normal opening and closing of the sliding door 3.

[0042] Preferably, Figure 3 , Figure 4 As shown, a support seat 9 is fixed on each of the two fixed doors 1 , and both ends of the guide rod 11 are rotatably connected to the two support seats 9 ; and two pulleys 22 are rotatably connected to the two support seats 9 .

[0043] Preferably, Figure 1 , Figure 2 As shown, a ground rail 4 is provided at the lower side of the sliding door 3 to provide support thereto, and a limiting step 19 is provided on the two fixed doors 1 to limit the travel of the sliding door 3 .

[0044] Preferably, see Figures 3 - 6 , Figure 9 As shown, two guide cylinders 13 are fixed above the two fixed doors 1, and the opposite ends of the two guide cylinders 13 are open ends. The two telescopic containers 20 are respectively located in the two guide cylinders 13, and the sides of the guide cylinders 13 are provided with slots 23 for the traction arms 17 to move. The guide cylinders 13 can constrain the deformation direction of the telescopic containers 20, and at the same time, reduce the technical requirements of the telescopic containers 20 for the manufacturing materials and structural design, which is easier to implement.

[0045] Preferably, see Figure 5 , Figure 6 As shown, the main body of the telescopic container 20 is a bellows 201 made of elastic material, and both ends of the bellows 201 are sealed by sealing plugs 202; to further improve the structural strength and durability of the bellows 201, the bellows 201 can be a bellows 201 product with embedded steel wire.

[0046] Preferably, referring to Figure 7 as shown, the transverse airbag 5 and the vertical airbag 8 are made of an elastic material, are hollow inside, and the peripheral side walls adopt an annular corrugated fold structure.

Claims

1. A full-height platform screen door, comprising two fixed doors distributed at intervals, two sliding doors located behind the fixed doors, and a top box; a traction mechanism composed of a driving motor, a synchronous belt and two belt pulleys is installed in the top box, the synchronous belt includes two straight sections, and a guide rod extending along the stroke direction of the sliding door is fixed in the top box; it is characterized in that: Two sliding sleeves are fixed on each sliding door and are sleeved on the guide rod and distributed at intervals; a driving sleeve that slides with the guide rod is provided between the two sliding sleeves on the same sliding door, and a buffer spring is provided between the driving sleeve and the sliding sleeves on both sides of the driving sleeve; the driving sleeves above the two sliding doors are fixedly connected to the two straight sections via traction arms respectively; two telescopic containers filled with gas are provided in the top box; the proximal ends of the two telescopic containers are fixedly connected to the two traction arms respectively, and the distal ends of the two telescopic containers are fixedly connected to the top box respectively; vertical airbags are fixed to the rear sides of the proximal ends of the two sliding doors respectively, and a transverse airbag is fixed to the rear side of the top box, and the transverse airbags are connected to the two telescopic containers via gas hoses; the two vertical airbags are connected to the two telescopic containers via gas hoses respectively.

2. The full-height platform screen door according to claim 1, wherein: The synchronous belt is made of rubber or polyurethane, with a steel wire rope embedded therein, and the synchronous belt and the pulley are provided with a matching toothed structure.

3. The full-height platform screen door according to claim 1, characterized in that: The driving motors are provided with two and are respectively connected to the two pulleys for transmission.

4. The full-height platform screen door according to claim 1, characterized in that: A support seat is fixed above each of the two fixed doors, and the two ends of the guide rod are rotatably connected to the two support seats respectively; and the two pulleys are rotatably connected to the two support seats respectively.

5. The full-height platform screen door according to claim 1, wherein: A ground rail is provided at the lower side of the sliding door to provide support therefor, and limiting steps are provided on the two fixed doors to limit the travel of the sliding door.

6. The full-height platform screen door according to claim 1, wherein: Two guide cylinders are fixed above the two fixed doors, and the opposite ends of the two guide cylinders are open ends. The two telescopic containers are respectively located in the two guide cylinders, and the sides of the guide cylinders are provided with slots for the traction arms to move.

7. The full-height platform screen door according to claim 1, wherein: The main body of the telescopic container is a bellows made of elastic material, and both ends of the bellows are sealed by sealing plugs.

8. The full-height platform screen door according to claim 1, characterized in that: The transverse airbag and the vertical airbag are made of elastic material, are hollow inside, and have surrounding side walls with an annular corrugated fold structure.

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