A self-cleaning platform door for rail transit

Abstract

This invention discloses a self-cleaning platform screen door for rail transit, belonging to the technical field of rail transit. It includes a door frame, with a motor mounted on the top of the frame. The output shaft of the motor is connected to a connecting shaft via a pulley mechanism. A gear is fixedly sleeved on the outer side of the connecting shaft, and a rack is fixed to the top of the platform screen door via a rod. It also includes a cleaning mechanism located on the inner side of the door frame. The cleaning mechanism cleans the surface of the platform screen door using a combination of sweeping and vacuuming. This self-cleaning platform screen door for rail transit, by combining a rolling cleaning brush with a vacuuming structure, achieves dynamic cleaning of impurities and dust on the platform screen door, avoiding problems of untimely cleaning and increased cleaning difficulty. Furthermore, the platform board connecting the platform screen door and the vehicle can absorb pedestrians' feet and fallen impurities and dust, reducing the amount of impurities and dust brought into the vehicle.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, specifically to a self-cleaning platform door for rail transit. Background Technology

[0002] Platform screen doors for rail transit are safety barrier systems installed on the edge of station platforms to separate the track area from the waiting area. Their core functions are to ensure passenger safety, improve operational efficiency, and enhance the waiting environment. For example, a platform screen door for rail transit with announcement number CN217048607U includes two fixed doors arranged spaced apart on the left and right sides. Each of the two fixed doors has a side box on its closest side. Between the two side boxes are a front door structure, a rear door structure, and two drive mechanisms. The front door structure and the rear door structure are both located behind the side boxes. The rear door structure includes... The platform screen door includes two rear sliding doors with a gap between them, and each rear sliding door corresponds to a side box. This rail transit platform screen door achieves a large opening passage while reducing the volume of the door body, lowering its weight and load, and maintaining the stability of the door structure under wind pressure load. It meets the requirements of large opening (distance) for opening time and kinetic energy (opening time 3-4.5s, kinetic energy ≤1 Joule). At the same time, it can also remove dust from the front sliding door and lock both front sliding doors to prevent accidents caused by the front sliding doors being opened manually. For example, a platform screen door for rail transit, with announcement number CN213898719U, includes a sliding door and a platform screen door frame. An emergency door is movably connected to the inner wall of one side of the platform screen door frame, and a fixed door is connected to the inner wall of the other side of the platform screen door frame via screws. A telescopic mechanism is connected to the outer wall of the bottom of the sliding door via screws. The telescopic mechanism includes a fixed plate, and two equidistant electromagnetic telescopic rods are connected to the outer wall of one side of the fixed plate via screws. One end of the piston rod of each electromagnetic telescopic rod is connected to a telescopic plate via screws, and a speed-increasing motor is connected to the outer wall of the top of the electromagnetic telescopic rod via screws. A door controller is connected to the outer wall of the top of the platform screen door frame via screws. The electromagnetic telescopic rods of this utility model push out the telescopic plate, which is then engaged between the train and the sliding door, allowing passengers to walk on and off the train and for luggage to be dragged, reducing the risk to passengers and making them feel safer. However, the above-mentioned platform screen door for rail transit still has the following drawbacks in actual use: 1. Traditional rail transit platform screen doors are usually cleaned manually on a regular basis, or by setting up stationary cleaning brushes inside the door frame. However, this method cannot remove adhering impurities and dust in a timely manner and has poor cleaning efficiency. 2. The gap between the traditional platform door and the vehicle is usually connected by a foot pedal. However, the foot pedal is subjected to foot traffic for a long time, and impurities will accumulate on its surface. Passengers can easily bring impurities and dust into the vehicle while stepping on it.

[0003] To address the aforementioned issues, innovative designs are urgently needed based on the existing platform screen doors. Summary of the Invention

[0004] The purpose of this invention is to provide a self-cleaning platform door for rail transit, in order to solve the problem mentioned in the background art that traditional rail transit platform doors are usually cleaned manually on a regular basis, or a stationary cleaning brush is installed inside the door frame. In addition, the step pedals are subjected to long-term foot traffic, and impurities will also accumulate on their surface. Passengers can easily bring impurities and dust into the vehicle during the stepping process.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a self-cleaning platform door for rail transit, comprising a door frame, an electric motor installed on the top of the door frame, and the output shaft of the electric motor being connected to a connecting shaft via a pulley mechanism, a gear being fixedly sleeved on the outer side of the connecting shaft, and racks being meshed on both sides of the gear, the racks being fixed to the top of the platform door via rods, and the platform door being slidably disposed on the inner side of the door frame; It also includes a cleaning mechanism, which is located on the inside of the door frame, and the cleaning mechanism cleans the surface of the shielded door by combining sweeping and vacuuming.

[0006] Preferably, the cleaning mechanism includes a cleaning brush disposed inside the door frame, and the cleaning brush is fixed on the drive shaft. The drive shaft is rotatably disposed inside the door frame, and the top of the drive shaft is driven by meshing with its shaft through a bevel gear set. The shaft of the bevel gear set is connected to the connecting shaft through a sprocket mechanism.

[0007] Preferably, a guide plate is fixed to the side of the shielding door, and the upper and lower sides of the guide plate are inclined. A fixing box is provided on the inner wall of the door frame, and a movable rod runs through the inside of the fixing box. After the guide plate moves, its inclined surface contacts the movable rod, which can push the two movable rods away from each other.

[0008] Preferably, the movable rod and the fixed box are elastically slidably connected, and the horizontal axis of the guide plate is located between the two movable rods. A piston block is fixed at the end of the movable rod, and the edge of the piston block slides against the inner wall of the fixed box. When the movable rod is fixed, it can push the piston block to slide inside the fixed box.

[0009] Preferably, the interior of the fixed box is interconnected by an air outlet and an air supply channel, and the air supply channel is connected to the fixed cavity. Both the air supply channel and the fixed cavity are located inside the door frame, and negative pressure gas can be transmitted to the fixed cavity through the air supply channel.

[0010] Preferably, the inner wall of the door frame is provided with feeding holes at equal intervals, and the feeding holes are located on the side of the cleaning brush. Both the feeding holes and the cleaning brush are symmetrically distributed about the vertical axis of the shielding door. The feeding holes can suck up the swept-down dust and the dust on the shielding door.

[0011] Preferably, the side of the door frame is provided with a connecting mechanism, which is used to fill the gap between the platform and the vehicle. The connecting mechanism includes a pedal hinged to the door frame, and the pedal has a rotation range of 0-90°. The pedal has a hollow structure, and the surface of the pedal is uniformly reserved with fixing holes.

[0012] Preferably, both ends of the pedal are provided with fixing blocks, and the bottom of the fixing blocks are connected to the inside of the pedal through connecting holes, and the connecting holes are disposed between the pedal and the fixing blocks.

[0013] Preferably, the side of the fixing block is provided with an air inlet, and after the fixing block rotates, the air inlet is connected to the connecting channel, and the connecting channel is set inside the door frame.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This self-cleaning platform door for rail transit, by setting a rolling cleaning brush combined with a dust suction structure, achieves dynamic cleaning of impurities and dust on the platform door, avoiding problems such as untimely cleaning and increased cleaning difficulty. Furthermore, the step connecting the platform door and the vehicle can absorb pedestrians' feet and fallen impurities and dust, reducing the amount of impurities and dust brought into the vehicle. Specific details are as follows: 1. The drive shaft rotates, driving the cleaning brush to rotate. As the shielding door moves, it cleans the surface of the shielding door. During the movement of the shielding door, the guide plate moves synchronously. When it moves to contact the movable rod, it can push the guide plate to slide on the fixed box and drive the piston block to move. This creates a negative pressure between the piston block and the fixed box, which can suck the dust that falls from the cleaning and the dust that adheres to the shielding door into the fixed cavity through the feed hole, and then transfer it to the fixed box through the air supply channel. 2. After the pedal rotates, it connects the gap between the platform door and the vehicle to prevent items from falling onto the track. On the other hand, the rotation of the pedal causes the fixing block to embed into the door frame, and the air inlet on the fixing block is connected to the connecting channel. In this way, negative pressure gas can be transmitted to the fixing block through the connecting channel, and then transmitted to the pedal through the connecting hole. When pedestrians pass on the pedal, the dust that falls and the dust on the soles of pedestrians' shoes can be sucked into the pedal through the fixing hole, preventing a large amount of dust from being brought into the vehicle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic cross-sectional view of the present invention; Figure 3 This is a cross-sectional view of the fixing box structure of the present invention; Figure 4 This is a schematic diagram of the cleaning brush structure of the present invention; Figure 5 This is a schematic diagram of the feed hole structure of the present invention; Figure 6 For the present invention Figure 5 Enlarged structural diagram at point A in the middle; Figure 7 This is a schematic diagram of the gas delivery channel structure of the present invention; Figure 8 This is a schematic diagram of the pedal structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged structural diagram at point B; Figure 10 This is a cross-sectional view of the fixing block structure of the present invention.

[0016] In the diagram: 1. Door frame; 2. Motor; 3. Connecting shaft; 4. Gear; 5. Rack; 6. Shielding door; 7. Bevel gear assembly; 8. Drive shaft; 9. Cleaning brush; 10. Guide plate; 11. Fixing box; 12. Movable rod; 13. Piston block; 14. Air outlet; 15. Air supply channel; 16. Fixing cavity; 17. Feed hole; 18. Connecting channel; 19. Pedal; 20. Fixing hole; 21. Fixing block; 22. Connecting hole; 23. Air inlet. Detailed Implementation

[0017] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0018] Please see Figures 1-10 The present invention provides the following technical solution: Example 1: To address the problems existing in the prior art, this example provides the following technical solution: a self-cleaning platform screen door for rail transit, comprising a door frame 1, a motor 2 mounted on the top of the door frame 1, and the output shaft of the motor 2 connected to a connecting shaft 3 via a pulley mechanism. A gear 4 is fixedly sleeved on the outer side of the connecting shaft 3, and racks 5 are meshed on both sides of the gear 4. The racks 5 are fixed to the top of the platform screen door 6 via rods, and the platform screen door 6 is slidably disposed on the inner side of the door frame 1; it also includes a cleaning mechanism disposed on the inner side of the door frame 1, which cleans the surface of the platform screen door 6 by a combination of sweeping and vacuuming; such as Figures 1-3As shown, when using the platform screen doors, the motor 2 drives the connecting shaft 3 to rotate through the belt pulley mechanism, which in turn drives the gear 4 to rotate. Through the meshing transmission between the gear 4 and the rack 5, the two platform screen doors 6 are opened or closed.

[0019] Currently, the cleaning of rail transit platform screen doors typically involves manual periodic wiping of the screen door surface 6, or the use of stationary cleaning brushes 9 inside the door frame. However, this method cannot effectively remove adhering impurities and dust, and suffers from poor cleaning efficiency. Figures 2-7 As shown, the cleaning mechanism includes a cleaning brush 9 disposed inside the door frame 1, and the cleaning brush 9 is fixed on the drive shaft 8. The drive shaft 8 is rotatably disposed inside the door frame 1, and the top of the drive shaft 8 is driven by a bevel gear set 7 meshing with its shaft. The shaft of the bevel gear set 7 is connected to the connecting shaft 3 through a sprocket mechanism. A guide plate 10 is fixed to the side of the shielding door 6, and the upper and lower sides of the guide plate 10 are inclined. A fixing box 11 is provided on the inner wall of the door frame 1, and a movable part passes through the interior of the fixing box 11. Rod 12; the movable rod 12 and the fixed box 11 are elastically slidably connected, and the transverse axis of the guide plate 10 is located between the two movable rods 12. A piston block 13 is fixed to the end of the movable rod 12, and the edge of the piston block 13 slides against the inner wall of the fixed box 11. The interior of the fixed box 11 is interconnected through an air outlet 14 and an air supply channel 15, and the air supply channel 15 is connected to the fixed cavity 16. Both the air supply channel 15 and the fixed cavity 16 are located within the door frame 1. The inner walls of the door frame 1 are evenly spaced... A feed hole 17 is provided, and the feed hole 17 is located on the side of the cleaning brush 9. Both the feed hole 17 and the cleaning brush 9 are symmetrically distributed about the vertical axis of the shielding door 6. When the connecting shaft 3 rotates, it can also drive the shaft of the bevel gear group 7 to rotate through the sprocket mechanism. Then, through the meshing transmission of the bevel gear group 7, it drives the transmission shaft 8 to rotate, and then drives the cleaning brush 9 to rotate. When the shielding door 6 moves, it cleans its surface. During the movement of the shielding door 6, it drives the guide plate 10 to move synchronously. When the guide plate 10 moves to contact the movable rod 12, it can push the movable rod 12 to slide on the fixed box 11 and drive the piston block 13 to move. In this way, a negative pressure is generated between the piston block 13 and the fixed box 11, which can suck the dust that falls from the cleaning and the dust that adheres to the shielding door 6 into the fixed cavity 16 through the feed hole 17, and then transmit it to the fixed box 11 through the air supply channel 15 for subsequent collection. The cleaning brush 9 and the feed hole 17 are symmetrically distributed, which can clean both sides of the two shielding doors 6 simultaneously.

[0020] Example 2: Existing platform screen doors and vehicle gaps are typically connected using a step 19. However, the step 19 is subject to constant foot traffic, and impurities can accumulate on its surface. Passengers can easily bring these impurities and dust into the vehicle during use. Therefore, this example uses the following technical solution: Figures 8-10As shown, a connecting mechanism is provided on the side of the door frame 1 to fill the gap between the platform and the vehicle. The connecting mechanism includes a pedal 19 hinged to the door frame 1, and the pedal 19 has a rotation range of 0-90°. The pedal 19 is a hollow structure, and fixing holes 20 are evenly provided on the surface of the pedal 19. Fixing blocks 21 are provided at both ends of the pedal 19, and the bottom of the fixing blocks 21 is connected to the interior of the pedal 19 through connecting holes 22. The connecting holes 22 are provided through the pedal 19 and the fixing blocks 21. An air inlet 23 is provided on the side of the fixing blocks 21. After the fixing blocks 21 rotate, the air inlet 23 is connected to the connecting channel 18, and the connecting channel 18 is located inside the door frame 1. During the opening of the platform screen door 6, the vertical pedal 19 can be rotated to a horizontal position by the controller. The existing technology involves the simultaneous rotation of the platform door 6 opening and the pedal 19 rotating. The rotation of the pedal 19 serves two purposes: firstly, it connects the gap between the platform door and the vehicle, preventing items from falling onto the tracks; secondly, the rotation of the pedal 19 causes the fixing block 21 to embed into the door frame 1, connecting the air inlet 23 on the fixing block 21 with the connecting channel 18. This allows negative pressure gas to be transmitted through the connecting channel 18 to the fixing block 21, and then through the connecting hole 22 to the pedal 19. When pedestrians pass over the pedal 19, the dust falling from their shoes and the dust on their soles are sucked into the pedal 19 through the fixing hole 20, preventing a large amount of dust from being brought into the vehicle. When the platform door 6 closes, the pedal 19 automatically returns to a vertical position, causing the air inlet 23 to intersect with the connecting channel 18, at which point only dust on the platform door 6 is sucked in.

[0021] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A self-cleaning platform door for rail transit, comprising a door frame (1), wherein a motor (2) is installed on the top of the door frame (1), and the output shaft of the motor (2) is connected to a connecting shaft (3) via a pulley mechanism, wherein a gear (4) is fixedly sleeved on the outside of the connecting shaft (3), and a rack (5) is meshed on both sides of the gear (4), wherein the rack (5) is fixed to the top of a shielding door (6) via a rod, and the shielding door (6) is slidably disposed on the inside of the door frame (1); Its features are, Also includes: A cleaning mechanism is installed on the inside of the door frame (1). The cleaning mechanism cleans the surface of the shielding door (6) by combining sweeping and vacuuming.

2. The self-cleaning platform door for rail transit according to claim 1, characterized in that: The cleaning mechanism includes a cleaning brush (9) disposed inside the door frame (1), and the cleaning brush (9) is fixed on the drive shaft (8). The drive shaft (8) is rotatably disposed inside the door frame (1). At the same time, the top of the drive shaft (8) is driven by meshing with its shaft through a bevel gear group (7), and the shaft of the bevel gear group (7) is connected to the connecting shaft (3) through a sprocket mechanism.

3. A self-cleaning platform door for rail transit according to claim 2, characterized in that: The shielding door (6) has a guide plate (10) fixed on its side, and the upper and lower sides of the guide plate (10) are inclined. The inner wall of the door frame (1) is provided with a fixing box (11), and a movable rod (12) passes through the inside of the fixing box (11).

4. A self-cleaning platform door for rail transit according to claim 3, characterized in that: The movable rod (12) and the fixed box (11) are elastically slidably connected, and the horizontal axis of the guide plate (10) is located between the two movable rods (12). The end of the movable rod (12) is fixed with a piston block (13), and the edge of the piston block (13) slides against the inner wall of the fixed box (11).

5. A self-cleaning platform door for rail transit according to claim 4, characterized in that: The interior of the fixed box (11) is connected to the air outlet (14) and the air supply channel (15), and the air supply channel (15) is connected to the fixed cavity (16). Both the air supply channel (15) and the fixed cavity (16) are located inside the door frame (1).

6. A self-cleaning platform door for rail transit according to claim 5, characterized in that: The inner wall of the door frame (1) is provided with feed holes (17) at equal intervals, and the feed holes (17) are located on the side of the cleaning brush (9). The feed holes (17) and the cleaning brush (9) are symmetrically distributed about the vertical axis of the shielding door (6).

7. A self-cleaning platform door for rail transit according to claim 1, characterized in that: The side of the door frame (1) is provided with a connecting mechanism, which is used to fill the gap between the platform and the vehicle. The connecting mechanism includes a pedal (19) hinged to the door frame (1). The pedal (19) has a rotation range of 0-90° and is hollow. At the same time, the surface of the pedal (19) is uniformly reserved with fixing holes (20).

8. A self-cleaning platform door for rail transit according to claim 7, characterized in that: Both ends of the pedal (19) are provided with fixing blocks (21), and the bottom of the fixing block (21) is connected to the inside of the pedal (19) through the connecting hole (22), and the connecting hole (22) is provided between the pedal (19) and the fixing block (21).

9. A self-cleaning platform door for rail transit according to claim 8, characterized in that: The side of the fixing block (21) has an air inlet (23), and after the fixing block (21) rotates, the air inlet (23) is connected to the connecting channel (18), and the connecting channel (18) is set inside the door frame (1).

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