Power-off safety guarantee device for rail transit platform screen door

Abstract

The invention discloses a rail transit platform screen door power-off safety guarantee device which comprises a platform screen door mounting frame, an entrance and exit is formed in one side of the platform screen door mounting frame, sliding grooves are formed in the two sides of the entrance and exit, platform screen doors are arranged in the entrance and exit and the sliding grooves, and supporting blocks are fixed in the sliding grooves. According to the rail transit shielding door power-off safety guarantee device, one hand pulls an annular pulling plate, the annular pulling plate drives a clamping rod and a fixing ring to move at the same time, the fixing ring compresses a spring, meanwhile, the end of the clamping rod is separated from a clamping groove, and a movable plate is disengaged from fixation, and the other hand rotates a plum blossom handle, the plum blossom handle drives a rotating shaft and a gear to rotate, and the gear is driven to rotate. The gear drives the movable plate, the electric push rod and the shielding door to move towards the interior of the sliding groove through the tooth groove, so that the entrance and exit are opened, it is guaranteed that the shielding door can be manually opened and the entrance and exit can be opened under the power failure condition, passengers can smoothly escape, and the safety of the shielding door is improved.

Description

Technical Field

[0001] This invention relates to the field of rail transit technology, specifically to a power outage safety device for rail transit platform screen doors. Background Technology

[0002] Platform screen doors are core safety equipment installed on the edge of platforms in subway and light rail systems. Their core function is to separate the tracks from the platform area, preventing passengers from accidentally falling or entering the tracks. The screen doors can be opened and closed by electric push rods, ensuring orderly boarding and alighting of passengers.

[0003] However, existing rail transit platform screen doors cannot be opened and closed electrically after a power outage. In the event of a dangerous situation, such as a fire, passengers may be trapped inside the screen doors, unable to escape in time, potentially leading to a major safety accident. Therefore, there is an urgent need for innovative designs to address these issues, building upon the existing power outage safety devices for rail transit platform screen doors. Summary of the Invention

[0004] The purpose of this invention is to provide a power outage safety device for rail transit platform screen doors to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a power failure safety device for rail transit platform screen doors, comprising a platform screen door mounting frame, an inlet and outlet on one side of the platform screen door mounting frame, sliding grooves on both sides of the inlet and outlet, a platform screen door being installed inside the inlet and outlet and the sliding grooves, a support block being fixed inside the sliding grooves, a movable plate being installed on the top of the support block, an electric push rod being fixed inside the movable plate, and the output end of the electric push rod being fixedly connected to one side of the platform screen door; The movable plate and the shielding door mounting frame are fixedly connected by a fixing mechanism; The top of the movable plate is equipped with a drive mechanism for manually moving the shielding door.

[0006] Preferably, the fixed connection includes a U-shaped plate, the inner wall of the shielding door mounting bracket is fixed with the U-shaped plate, a slot is provided on one side of the movable plate, and a locking rod passes through the side wall of the shielding door mounting bracket and the end of the U-shaped plate. One end of the locking rod is engaged inside the slot, a fixing ring is fixed to the outer wall of the locking rod inside the U-shaped plate, and a spring is nested on the outer side of the locking rod. The spring is located between the fixing ring and the end of the U-shaped plate.

[0007] Preferably, the end of the lever is fixed with an annular pull plate outside the U-shaped plate.

[0008] Preferably, the other end of the lever is designed as a frustum-shaped structure, and the diameter of the other end of the lever is smaller than the diameter of the slot.

[0009] Preferably, the driving mechanism includes a rotating shaft, the rotating shaft is rotatably mounted inside the slide groove, a gear is fixed to the outer wall of the rotating shaft, and the top of the movable plate is meshed with the bottom of the gear through a tooth groove.

[0010] Preferably, the end of the rotating shaft is fixed with a plum blossom handle through the side wall of the shielding door mounting bracket.

[0011] Preferably, anti-detachment blocks are fixed at both ends of the bottom of the movable plate, and the anti-detachment blocks are slidably connected to the shielding door.

[0012] Preferably, the top of the slide groove is provided with a positioning groove, and a positioning block is slidably disposed inside the positioning groove. The bottom of the positioning block is fixedly connected to the top end of the shielding door.

[0013] Preferably, a stainless steel protective cover is fixed to the inner wall of the shielding door mounting bracket. The plum blossom handle and the fixing mechanism are both located inside the stainless steel protective cover. A stainless steel circular grid plate is rotatably installed at the bottom end of the stainless steel protective cover via a T-shaped rod. Fixing ears are fixed to the top of the stainless steel circular grid plate and the top of the stainless steel protective cover. The fixing ears are fixedly connected to each other by a door lock.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This rail transit platform screen door power failure safety device allows one hand to pull the circular pull plate, which drives the locking rod and the fixing ring to move simultaneously. The fixing ring compresses the spring, and at the same time, the end of the locking rod separates from the locking groove, and the movable plate disengages from the fixing. The other hand rotates the plum blossom handle, which drives the rotating shaft and gear to rotate. The gear drives the movable plate, the electric push rod and the platform screen door to move into the slide groove through the tooth groove, so that the entrance and exit can be opened. This ensures that the platform screen door can be manually opened even in the event of a power failure, allowing passengers to escape smoothly and improving the safety of the platform screen door. The other end of the lever is designed as a frustum-shaped structure, and the diameter of the other end of the lever is smaller than the diameter of the slot, which makes it easy for the other end of the lever to align with the slot, thus making it easy for the other end of the lever to engage inside the slot. Anti-detachment blocks are fixed at both ends of the bottom of the movable plate. The anti-detachment blocks are slidably connected to the shielding door. Under the limit of the anti-detachment blocks and the support blocks, the movable plate will not separate from the support blocks. The installation of stainless steel protective covers and stainless steel circular grids ensures that the plum blossom handles and fixing mechanisms are located inside the stainless steel protective covers, preventing passengers from touching them and guaranteeing that the platform screen doors will not be accidentally touched by passengers, thus preventing any danger. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a cross-sectional view of the installation structure of the stainless steel protective cover of the present invention; Figure 3 For the present invention Figure 1 Schematic diagram of the structure after the removal of the stainless steel protective cover and stainless steel circular grid plate; Figure 4 This is a schematic cross-sectional view of the shielding door mounting bracket of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a schematic diagram of the movable plate mounting structure of the present invention; Figure 7 This is a schematic diagram of the electric actuator mounting structure of the present invention.

[0016] In the diagram: 1. Shielding door mounting bracket; 2. Entrance / exit; 3. Shielding door; 4. Slide track; 5. Movable plate; 6. Electric push rod; 7. Rotating shaft; 8. Gear; 9. U-shaped plate; 10. Locking rod; 11. Locking groove; 12. Fixing ring; 13. Spring; 14. Circular pull plate; 15. Support block; 16. Anti-detachment block; 17. Positioning groove; 18. Positioning block; 19. Stainless steel protective cover; 20. T-shaped rod; 21. Stainless steel circular grid plate; 22. Fixing lug; 23. Door lock; 24. Plum blossom handle. Detailed Implementation

[0017] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0018] In the description of this invention, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0019] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0020] 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.

[0021] Please see Figure 1-7 This invention provides a technical solution: a power failure safety device for rail transit platform screen doors, including a platform screen door mounting frame 1. An inlet / outlet 2 is provided on one side of the platform screen door mounting frame 1, and sliding grooves 4 are provided on both sides of the inlet / outlet 2. The top and bottom of the sliding grooves 4 are at the same height as the top and bottom of the inlet / outlet 2. Platform screen doors 3 are slidably installed inside the inlet / outlet 2 and the sliding grooves 4, allowing the platform screen doors 3 to move stably horizontally within the inlet / outlet 2 and the sliding grooves 4. A support block 15 is fixed inside the sliding groove 4, and a movable plate 5 is slidably mounted on the top of the support block 15. The support block 15 supports the bottom of the movable plate 5, facilitating its horizontal movement. An electric push rod 6 is fixed inside the movable plate 5, and the output end of the electric push rod 6 passes through the end of the movable plate 5 and is fixedly connected to the middle of one side of the platform screen door 3. By activating the extension / retraction of the electric push rod 6, the platform screen door 3 can be moved left and right, allowing the inlet / outlet 2 to open or close. The movable plate 5 and the shielding door mounting bracket 1 are fixedly connected by a fixing mechanism; The top of the movable plate 5 is equipped with a drive mechanism for manually moving the shielding door 3.

[0022] In one embodiment, the fixed connection includes a U-shaped plate 9. The U-shaped plate 9 is fixed to the inner wall of the shielding door mounting bracket 1. A slot 11 is provided on one side of the movable plate 5. A locking rod 10 is slidably passed through the side wall of the shielding door mounting bracket 1 and the end of the U-shaped plate 9. One end of the locking rod 10 is engaged inside the slot 11. A fixing ring 12 is nested and fixed inside the U-shaped plate 9 on the outer wall of the locking rod 10. A spring 13 is movably nested on the outer side of the locking rod 10. The spring 13 is located between the fixing ring 12 and the end of the U-shaped plate 9. Under the elastic force of the spring 13, the end of the locking rod 10 can engage with the slot 11, so that the positions of the movable plate 5 and the electric push rod 6 can be fixed, so that the electric push rod 6 can drive the shielding door 3 to move horizontally. The U-shaped plate 9 limits one end of the spring 13 and guides the locking rod 10.

[0023] In one embodiment, an annular pull plate 14 is fixed to the end of the locking rod 10 outside the U-shaped plate 9. The annular pull plate 14 facilitates the movement of the locking rod 10, allowing the end of the locking rod 10 to separate from the locking groove 11, so that the movable plate 5 can be detached from the fixed position.

[0024] In one embodiment, the other end of the locking rod 10 is designed as a frustum-shaped structure, and the diameter of the other end of the locking rod 10 is smaller than the diameter of the locking groove 11, so that the other end of the locking rod 10 can be aligned with the locking groove 11, thereby facilitating the other end of the locking rod 10 to engage inside the locking groove 11.

[0025] In one embodiment, the drive mechanism includes a rotating shaft 7. The rotating shaft 7 is rotatably mounted inside the slide groove 4 via a bearing. Under the action of the bearing, the rotating shaft 7 can rotate. A gear 8 is nested and fixed on the outer wall of the rotating shaft 7. The top of the movable plate 5 is provided with toothed grooves at equal intervals. The top of the movable plate 5 is connected to the bottom of the gear 8 through the toothed grooves. The end of the rotating shaft 7 is fixed with a plum blossom handle 24 through the side wall of the shielding door mounting bracket 1. The plum blossom handle 24 facilitates manual rotation of the gear 8, so that the gear 8 can drive the movable plate 5, the electric push rod 6 and the shielding door 3 to move left and right. This ensures that even after the electric push rod 6 is de-energized, the shielding door 3 can still be manually closed or opened to close the inlet and outlet 2.

[0026] In one embodiment, anti-detachment blocks 16 are fixed at both ends of the bottom of the movable plate 5. The anti-detachment blocks 16 are slidably connected to the shielding door 3. Under the limitation of the anti-detachment blocks 16 and the support blocks 15, the movable plate 5 will not separate from the support blocks 15.

[0027] In one embodiment, a positioning groove 17 is provided at the top of the slide 4, and a positioning block 18 is slidably disposed inside the positioning groove 17. The bottom of the positioning block 18 is fixedly connected to the top end of the shielding door 3. Under the limitation of the positioning groove 17 and the positioning block 18, the shielding door 3 can only move to half of the entrance and exit 2, so that the two shielding doors 3 can just block the entrance and exit 2.

[0028] In one embodiment, a stainless steel protective cover 19 is fixed to the inner wall of the platform screen door mounting bracket 1. The plum blossom handle 24 and the fixing mechanism are both located inside the stainless steel protective cover 19. A stainless steel circular grid plate 21 is rotatably installed at the bottom end of the stainless steel protective cover 19 via a T-shaped rod 20. The T-shaped rod 20 allows the stainless steel circular grid plate 21 to rotate relative to the stainless steel protective cover 19 without separating it. Fixing ears 22 are fixed to the top of both the stainless steel circular grid plate 21 and the top of the stainless steel protective cover 19. The fixing ears 22 are fixedly connected by a door lock 23. The door lock 23 is an existing product that requires a flight attendant to open and close it with a matching key, ensuring that passengers cannot open the door lock 23 on their own. Furthermore, the plum blossom handle 24 and the fixing mechanism are both located inside the stainless steel protective cover 19 and will not be touched by passengers, ensuring that the platform screen door 3 will not be accidentally touched by passengers and cause danger.

[0029] Working principle: When using the rail transit platform screen door power failure safety device, firstly, by activating the electric push rod 6, the electric push rod 6 can drive the platform screen door 3 to move left and right inside the entrance and exit 2, thereby realizing the opening and closing of the entrance and exit 2; When a power outage occurs and the electric push rod 6 cannot be used, the crew member uses a key to open the door lock 23, then removes the door lock 23 from the fixing lug 22, and rotates the stainless steel circular grid plate 21 through the T-shaped rod 20. Under the action of gravity, the stainless steel circular grid plate 21 is vertically downward, so that the stainless steel circular grid plate 21 will not block the crew member from using the stainless steel protective cover 19, and the opening of the stainless steel protective cover 19 is opened. One hand pulls the annular pull plate 14, which drives the locking rod 10 and the fixing ring 12 to move simultaneously. The fixing ring 12 compresses the spring 13, and at the same time, the end of the locking rod 10 separates from the locking groove 11, and the movable plate 5 is released from the fixation. With the other hand, rotate the plum blossom handle 24. The plum blossom handle 24 drives the rotating shaft 7 and gear 8 to rotate. The gear 8 drives the movable plate 5, electric push rod 6 and shielding door 3 to move into the slide 4 through the tooth groove, so that the entrance and exit 2 can be opened. This ensures that the shielding door 3 can be opened manually even in the event of a power failure, so that the entrance and exit 2 can be opened and passengers can escape smoothly, thus improving the safety of the shielding door 3. When the movable plate 5 needs to be reset, rotate the plum blossom handle 24 in the opposite direction. The plum blossom handle 24 drives the rotating shaft 7 and gear 8 to rotate. The gear 8 drives the movable plate 5 to move through the tooth groove. When the slot 11 on the movable plate 5 is aligned with the end of the locking rod 10, the end of the locking rod 10 is engaged with the slot 11 under the elastic force of the spring 13, thus completing the reset and fixation of the movable plate 5. This allows the electric push rod 6 to open or close the shielding door 3 normally after being powered on.

[0030] 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 power failure safety device for rail transit platform screen doors, comprising a platform screen door mounting bracket (1), wherein an inlet / outlet (2) is provided on one side of the platform screen door mounting bracket (1), and sliding grooves (4) are provided on both sides of the inlet / outlet (2), and a platform screen door (3) is provided inside the inlet / outlet (2) and the sliding grooves (4), characterized in that: The inside of the chute (4) is fixed with a supporting block (15), the top of the supporting block (15) is provided with a movable plate (5), the inside of the movable plate (5) is fixed with an electric push rod (6), and the output end of the electric push rod (6) is fixedly connected with one side of the shielding door (3). The movable plate (5) and the shielding door mounting frame (1) are fixedly connected through a fixing mechanism. The top of the movable plate (5) is provided with a driving mechanism for manually driving the shielding door (3) to move.

2. The power-off safety guarantee device for rail transit shielding doors according to claim 1, characterized in that: The fixing mechanism comprises a U-shaped plate (9), the inner wall of the shielding door mounting frame (1) is fixed with the U-shaped plate (9), one side of the movable plate (5) is provided with a clamping groove (11), the side wall of the shielding door mounting frame (1) and the end of the U-shaped plate (9) are both penetrated by a clamping rod (10), one end of the clamping rod (10) is clamped in the inside of the clamping groove (11), the outer wall of the clamping rod (10) is fixed with a fixing ring (12) in the inside of the U-shaped plate (9), the outer side of the clamping rod (10) is nested with a spring (13), and the spring (13) is located between the fixing ring (12) and the end of the U-shaped plate (9).

3. The power-off safety assurance device for rail transit shielding doors according to claim 2, characterized in that: The end of the clamping rod (10) is fixed with a circular ring-shaped pull plate (14) outside the U-shaped plate (9).

4. The power-off safety guarantee device for rail transit shielding doors according to claim 3, characterized in that: The other end of the clamping rod (10) is designed in a circular truncated cone structure, and the diameter of the other end of the clamping rod (10) is smaller than that of the clamping groove (11).

5. The power-off safety assurance device for rail transit shielding doors according to claim 1, characterized in that: The driving mechanism comprises a rotating shaft (7), the inside of the chute (4) is rotatably provided with the rotating shaft (7), the outer wall of the rotating shaft (7) is fixed with a gear (8), and the top of the movable plate (5) is meshingly connected with the bottom of the gear (8) through a gear groove.

6. The power-off safety assurance device for rail transit shielding doors according to claim 5, characterized in that: The end of the rotating shaft (7) penetrates the side wall of the shielding door mounting frame (1) and is fixedly connected with a key handle (24).

7. The power-off safety assurance device for rail transit shielding doors according to claim 2, characterized in that: The bottom of the movable plate (5) is fixedly connected with an anti-dropping block (16), and the anti-dropping block (16) is slidably connected with the shielding door (3).

8. The power-off safety assurance device for rail transit shielding doors according to claim 1, characterized in that: The top of the chute (4) is provided with a positioning groove (17), the inside of the positioning groove (17) is slidably provided with a positioning block (18), and the bottom of the positioning block (18) is fixedly connected with the top end of the shielding door (3).

9. The power-off safety assurance device for rail transit shielding doors according to claim 6, characterized in that: The inner wall of the shielding door mounting frame (1) is fixedly connected with a stainless steel protective cover (19), the key handle (24) and the fixing mechanism are located in the inside of the stainless steel protective cover (19), the end of the stainless steel protective cover (19) is rotatably provided with a stainless steel circular grid baffle (21) through a T-shaped rod (20), the top of the stainless steel circular grid baffle (21) and the top of the stainless steel protective cover (19) are both fixedly connected with a fixing lug (22), and the fixing lugs (22) are fixedly connected through a door lock (23).

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