Flood prevention devices for entrances and exits of underground railway stations.

Abstract

Regarding the technology of flood prevention devices for railway transportation, this invention provides a flood prevention device for entrances and exits of underground railway stations. [Solution] The device consists of a drive motor 1, a main shaft 3, a worm gear type lifting mechanism 4, and a gate 5. The drive motor drives the worm gear type lifting mechanism via the main shaft, causing the gate to move up and down. Door frames 6 are provided on both sides of the gate, and wedge-shaped sealing components are fixed to the inside of the door frames. The wedge-shaped sealing components are positioned along the long side of the door frame, and the shape of the gate matches the shape of the wedge-shaped sealing components. As the gate rises, the gate and the wedge-shaped sealing components gradually come into close contact, forming a seal. This device ensures a seal by the close contact between the wedge-shaped sealing components and the gate, preventing water from seeping into the subway through the gap between the gate and the door frame. The structure is simple and the sealing effect is excellent.

Description

Technical Field

[0001] This invention belongs to the technical field of flood prevention devices in railway transportation, and particularly relates to a flood prevention device at the entrance and exit of an underground railway station in railway transportation.

Background Art

[0002] With the development of cities, urban land is decreasing more and more, and the areas where inland waterlogging has already occurred are also continuously increasing. Generally, the places with a high flood risk in urban areas are located in low-lying areas, but even in areas with high terrain and insufficient drainage, water accumulation may occur, which may become places with a high flood risk. In particular, the underground entrances and exits of railway transportation are key points and difficult points in flood prevention measures. During operation, although there are weather warnings, entrances and exits are rarely blocked in advance considering the convenience of passengers. Therefore, when a dangerous situation occurs, the amount of work for blocking the entrances and exits is huge, it is not easy to implement blocking measures, and it is easy to cause flooding of the entrances and exits.

[0003] Currently, the main flood prevention measures at the entrances and exits of domestic subways are as follows: 1. Traditional grid-shaped waterproof walls made of aluminum alloy. 2. Hydraulic reversing doors. 3. Hoisting type water stop gates. 4. Concealed slat gates. Concealed slat gates are superior in terms of the aesthetic appearance and reliability compared to the other three types. However, the current concealed slat gates have many parts, complex mechanisms, are prone to failure, have low reliability, and are disadvantageous for daily operation and maintenance. In many cases, a hydraulic station is adopted as the drive source, and the drive terminal is composed of a plurality of different hydraulic cylinders. A large number of hydraulic components such as control valves, hydraulic pipes, and overflow valves are used in the system, which occupy space, require high precision, and have high resistance to environmental temperature. Also, the seal components are prone to invalidation, and later maintenance is difficult.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

[0005] To address the problems inherent in conventional concealed elevator gates, this invention provides a flood prevention device for entrances and exits of underground railway stations. This device uses wedge-shaped sealing components to seal the gap between the gate and the gate frame, preventing water from entering the subway through the gate. It has a simple structure and excellent sealing effect. [Means for solving the problem]

[0006] To solve the above technical problems, this invention comprises a drive motor, a main shaft, a worm gear type lifting mechanism, and a gate. The drive motor drives the main shaft to operate the worm gear type lifting mechanism, which enables the vertical movement of the gate. Door frames are provided on both sides of the gate, and wedge-shaped sealing components are fixed to the inside of the door frames. The sealing components are positioned along the long side of the door frames, and the shape of the gate matches the shape of the sealing components. The invention provides a flood prevention device for the entrance and exit of an underground railway station, characterized in that as the gate rises, the gate and the sealing components gradually come into close contact, forming a seal.

[0007] Furthermore, the wedge-shaped sealing component includes a wedge-shaped metal plate fixed to the inside of the door frame, on which a wedge-shaped sealing rubber strip is fixed.

[0008] Furthermore, wedge-shaped sealing components are provided on both sides of the inside of the door frame.

[0009] Furthermore, a wedge-shaped sealing component is provided on the outside of the door frame at the entrance.

[0010] Furthermore, the lower end of the gate has wing-shaped ends extending to both sides, and a lower seal strip is provided below the wedge-shaped seal component. This lower seal strip is fixed under the floor, and both ends are fixed to the bottom surfaces of the wedge-shaped seal components provided on the door frames on both sides. When the gate is fully raised, the wing-shaped ends contact the lower seal strip, ensuring a secure seal is formed.

[0011] Furthermore, the central portion of the lower sealing rubber strip is secured by L-shaped metal strips that are pre-installed in the civil engineering structures at the entrance and exit.

[0012] Furthermore, a recess is provided at the top of the gate, and floor tiles are laid in this recess.

[0013] This invention has the following advantages compared to the prior art. The flood prevention device for subway entrances of this invention is completely hidden underground during normal use and is integrated with the floor surface of the station entrance, so as not to interfere with daily entry and exit. When use is required, the gate is raised by a drive motor and exposed above ground. Both ends of the gate are sealed by a door frame and a wedge-shaped sealing component. This sealing structure is simple and effective, preventing water from entering the subway station through the gap between the gate and the door frame before the water level drops. [Brief explanation of the drawing]

[0014] The present invention will be further described with reference to the drawings below.

[0015] [Figure 1] Figure 1 is an illustrative diagram of the overall structure of the present invention. [Figure 2] Figure 2 is an illustrative diagram of the sealing structure for the gap between the side of the gate and the door frame. [Figure 3] Figure 3 is an illustrative diagram of the lower seal structure. [Figure 4] Figure 4 is a close-up view of part A in Figure 3. [Modes for carrying out the invention]

[0016] As shown in Figures 1 and 2, the flood prevention device for the entrance / exit of an underground railway station comprises a drive motor 1, a main shaft 3, a worm gear type lifting mechanism 4, and a gate 5. The drive motor 1 drives the turbine reducer 2, which operates the drive main wheel of the turbine reducer 2. The main wheel rotates the driven wheel by belt drive, and the main shaft 3 is connected to the driven wheel and receives its rotation. A worm gear type lifting mechanism 4 is connected to each end of the main shaft 3. To ensure synchronous movement of the two worm gear type lifting mechanisms 4, it is possible to synchronize the operation of the mechanisms on both sides by adding a coupling. The worm gear type lifting mechanism 4 moves the gate 5 up and down.

[0017] To make it easily understandable to engineers in this field, the transmission structure of this invention has been generally described above. The power components of this invention employ a mechanical structure, resulting in a simple structure and a low failure rate. Below, the gate 5, which is the object of protection in this invention, and its sealing structure will be described in detail. The gate 5 of this invention employs a concealed lifting gate 5 as the main water-blocking component. When the device is not activated, the top of the gate 5 is at the same level as the floor surface of the entrance. When operation is required, it is driven by a worm gear type lifting mechanism 4, and the gate 5 rises and falls from underground to complete the water-blocking operation.

[0018] The entire gate 5 is constructed with a rectangular steel frame, and its interior and exterior are sealed with stainless steel. Additionally, for aesthetic reasons, a groove is provided at the top of gate 5, and this groove is covered with the same floor tiles 10 as the entrance floor.

[0019] Door frames 6 are provided on both sides of the gate 5, and they are fixed to the civil engineering structures on both sides of the subway entrance. The door frames 6 are provided with T-shaped guide railways and rolling guide boots 11 that match them, and the gate 5 is fixedly connected to the rolling guide boots 11. The worm gear type lifting mechanism 4 moves the gate 5 up and down. By reducing the frictional force, the rolling guide boots 11 improve the combination accuracy between the gate 5 and the T-shaped guide railway, prevent the gate 5 from jamming, and also provide accuracy assurance for the seal structures on both sides.

[0020] Inside the door frame 6, a wedge-shaped seal component 7 is fixed. This wedge-shaped seal component 7 is composed of a wedge-shaped metal plate 71 attached to the inside of the door frame 6 and a wedge-shaped seal rubber strip 72 fixed on it. The wedge-shaped seal component 7 is arranged in the long side direction of the door frame 6, and the shape of the gate 5 matches the shape of the wedge-shaped seal component 7. When the gate 5 rises, the gate 5 and the wedge-shaped seal component 7 gradually fit, and a reliable seal is formed. Also, the wedge-shaped metal plate 71 performs a guiding function and ensures an effective seal between the gate 5 and the wedge-shaped seal rubber strip 72.

[0021] In the water immersion prevention device at the subway entrance of the present invention, in order to achieve the seal between the gate 5 and the door frame 6, by attaching the wedge-shaped seal component 7 to the door frame 6, during the process of the gate 5 gradually rising, the wedge-shaped seal strip 72 gradually crimps and fits with the side surface of the gate 5, and a reliable seal is formed. This sealing method has a simple structure and high reliability, and realizes an effective seal between the gate 5 and the door frame 6. Even after long-term use, the wedge-shaped seal strips 72 on both sides can be easily replaced, and the later maintenance is very convenient.

[0022] The number of wedge-shaped seals 7 attached to each door frame 6 can be one or two. In the case of one, it is installed on the outer side of the entrance side of the door frame 6, that is, the side in contact with water. To further improve the sealing performance, by providing wedge-shaped seals 7 on both sides respectively, a double seal can be ensured.

[0023] In the above embodiment, the present invention provides a side sealing structure between the gate 5 and the door frame 6. However, since water leakage still occurs at the part where the gate 5 contacts the ground, a sealing structure is provided at the lower part.

[0024] As shown in FIGS. 3 to 4, the lower end of the gate 5 extends with wing-shaped ends on both sides, and a lower seal strip 8 is provided below the wedge-shaped seal part 7. This lower seal strip 8 is fixed underground, and both ends thereof are respectively fixed to the bottom surfaces of the wedge-shaped seal parts 7 of the door frames 6 on both sides. After the gate 5 reaches the upper limit position, the wing-shaped ends contact the lower seal strip 8 to complete the sealing. The central part of the lower seal strip 8 is fixed by an L-shaped metal pressing strip 9, and this L-shaped metal pressing strip 9 is pre-installed in the civil engineering structure of the entrance.

[0025] After the gate 5 reaches the upper limit position, the wing-shaped ends at the lower end of the gate 5 contact the lower seal strip 8 to form a seal. Thereby, effective sealing is ensured for both the side and the bottom of the gate 5, and the sealing structure is simple and effective. External water does not flood into the subway from the entrance.

[0026] The embodiments of the present invention have been described in detail above in conjunction with the drawings. However, the present invention is not limited to these embodiments, and various changes can be made without departing from the purpose of the present invention within the scope of knowledge possessed by ordinary technicians in the art.

Description of Reference Numerals

[0027] 1 is a drive motor, 2 is a speed reducer, 3 is a main shaft, 4 is a worm gear type lifting mechanism, 5 is a gate, 51 is a wing tip, 6 is a door frame, 7 is a wedge-shaped seal part, 71 is a wedge-shaped metal plate, 72 is a wedge-shaped seal rubber strip, 8 is a lower seal rubber strip, 9 is an L-shaped metal compression strip, 10 is a floor tile, 11 is a rolling guide boot.

Claims

1. A flood prevention device installed at the entrances and exits of underground railway stations, It comprises a drive motor (1), a main shaft (3), a worm gear type lifting mechanism (4), and a gate (5). The drive motor (1) drives a worm gear type lifting mechanism (4) via the main shaft (3), and the worm gear type lifting mechanism (4) is configured to raise and lower the gate (5). Door frames (6) are provided on both sides of the gate (5). A wedge-shaped sealing component (7) is fixed to the inside of the door frame (6). The wedge-shaped sealing component (7) is positioned along the longitudinal direction of the door frame (6), The gate (5) has a wedge shape corresponding to the wedge-shaped sealing component (7), As the gate (5) rises, the gate (5) and the wedge-shaped sealing component (7) gradually come into close contact, forming a sealed state. A flood prevention device for entrances and exits of underground railway stations, characterized by the following features.

2. The wedge-shaped sealing component (7) includes a wedge-shaped metal plate (71) fixed to the inside of the door frame (6) and a wedge-shaped sealing rubber strip (72) fixed to the wedge-shaped metal plate (71). A flood prevention device for entrances and exits of underground railway stations according to feature 1.

3. The wedge-shaped sealing component (7) is provided on both inner sides of the door frame (6). The flood prevention device for entrances and exits of underground railway stations according to feature 2.

4. The wedge-shaped sealing component (7) is provided on the side of the door frame (6) facing outwards from the entrance. The flood prevention device for entrances and exits of underground railway stations according to feature 2.

5. The lower end of the gate (5) has wingtips (51) on both sides. A lower seal rubber strip (8) is provided below the wedge-shaped seal component (7). The lower seal rubber strip (8) is fixed to the ground, and both ends are fixed to the bottom of the wedge-shaped seal component (7) provided on the door frame (6). When the gate (5) reaches its upper limit position, the wingtip (51) comes into contact with the lower seal rubber strip (8) to form a sealed state. A flood prevention device for entrances and exits of underground railway stations according to feature 1.

6. The central portion of the lower sealing rubber strip (8) is fixed by an L-shaped metal crimping member (9) that is pre-installed in the civil engineering structure of the entrance / exit. The flood prevention device for entrances and exits of underground railway stations according to feature 5.

7. A recess is formed in the upper part of the gate (5), and floor tiles (10) are laid in the recess. A flood prevention device for entrances and exits of underground railway stations according to feature 1.

Images