Hidden upturning type threshold of metro flood gate
By concealing the upward-flipping sill structure and utilizing hinges and tightening devices to achieve convenient flipping and double sealing, the problems of subway flood-proof sills affecting passage and poor sealing performance are solved, thereby improving the subway's flood-proof capability and safety in emergency situations.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- DONGGUAN YIYU DOOR IND CO LTD
- Filing Date
- 2025-05-24
- Publication Date
- 2026-05-12
AI Technical Summary
Existing subway floodgate thresholds are mostly fixed structures, which affect passage safety, especially for people with large luggage and those with mobility impairments; movable threshold structures are cumbersome to operate, time-consuming, and have poor sealing performance, making them difficult to deploy quickly in emergencies.
It adopts a hidden flip-up sill structure, using hinges and a clamping device to achieve convenient flipping and sealing of the flip-up cover. Combined with a water-stop strip, it forms a double seal. The hinge is connected by bolts, and the handle is easy to operate.
It enables the threshold to be hidden when not in use, and can be quickly deployed in emergencies, ensuring airtightness and improving the safety and ease of operation of subway passage.
Smart Images
Figure CN224228504U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of waterproof threshold technology, specifically relating to a hidden upward-opening threshold for a subway flood-proof door. Background Technology
[0002] The concealed, upward-opening threshold of subway floodproof doors is often used at garage entrances, subway entrances, and underground passage entrances where flooding and waterlogging are severe. It is used to isolate water bodies and prevent floodwater from seeping into buildings. During subway operation, subway floodproof doors play a crucial role in preventing floods caused by sudden floods, rainstorms, and other natural disasters from invading the subway interior and threatening subway facilities and passenger safety.
[0003] Most existing subway floodproof door thresholds are fixed structures. When not in use, fixed thresholds protrude from the ground, affecting normal subway passage, especially for passengers carrying large luggage and people with mobility impairments, posing a significant safety hazard. On the other hand, some movable threshold structures are cumbersome to operate, and the opening and closing process is time-consuming, making it difficult to quickly complete floodproof deployment in emergencies. Furthermore, their sealing performance is poor, and they cannot effectively prevent water from seeping in. Utility Model Content
[0004] The purpose of this utility model is to provide a hidden, upward-opening threshold for subway floodproof doors, aiming to solve the problem that most existing subway floodproof door thresholds are fixed structures. When not in use, fixed thresholds protrude from the ground, affecting the normal passage of subways, especially for passengers carrying large luggage and people with mobility impairments, posing a significant safety hazard. On the other hand, some movable threshold structures are cumbersome to operate, and the opening and closing process is time-consuming, making it difficult to quickly complete floodproof deployment in emergency situations. Furthermore, their sealing performance is poor, and they cannot effectively prevent water from seeping in.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a hidden upward-opening threshold for a subway floodproof door, including a threshold base, the threshold base being embedded in the concrete ground, and an upward-opening cover plate being provided in the recess of the inner wall of the threshold base.
[0006] Four hinges are installed in the included angle between the upper flip-up cover and the sill base. Each hinge is connected to the sill base and the upper flip-up cover by two bolts.
[0007] As a hidden upward-opening threshold for a subway flood-proof door according to this utility model, preferably, a downward groove is provided on one side of the inner wall of the threshold base, and the bottom of the upward-opening cover is inserted into the groove.
[0008] A water-stop strip is provided above one side of the groove, and the other side of the water-stop strip is adhered to the outer wall of the threshold base. When the upper flip-up cover is inserted into the groove, one side of the upper flip-up cover is tightly fitted with the outer wall of the water-stop strip.
[0009] As a hidden upward-opening threshold for a subway flood-proof door according to this utility model, preferably, a rectangular opening is provided on the outer wall of the threshold base away from the upward-opening cover plate, a clamping device is installed in the rectangular opening, and a handle is installed on the outer wall of the end of the upward-opening cover plate away from the water-stop rubber strip.
[0010] Compared with the prior art, the beneficial effects of this utility model are:
[0011] To use, pull the handle on the top flip-up cover, which will cause the cover to flip towards the opening of the sill base. The top flip-up cover flips smoothly via four sets of hinges, and once flipped, one end will align with the opening of the sill base. At this point, the clamping device on the sill base will secure the top flip-up cover firmly to the opening, while one end of the top flip-up cover will abut against the waterproof strip. Simultaneously, the waterproof strip on one side of the top flip-up cover will press against the inner wall of the opening of the sill base, thus achieving the convenient operation of hiding and revealing the top flip-up cover. Attached Figure Description
[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0013] Figure 1 A schematic diagram of the threshold base structure provided in the embodiments of this application.
[0014] Figure 2 A schematic diagram of the threshold base assembly structure pre-embedded in a concrete ground structure, as provided in the embodiments of this application.
[0015] Figure 3 Provided for the embodiments of this application Figure 2 Enlarged structural diagram at point A in the middle.
[0016] In the picture: 1. Threshold base; 2. Flip-up cover; 3. Hinge; 4. Bolt; 5. Water-stop strip; 6. Tightening device; 7. Handle. Detailed Implementation
[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0018] Please see Figure 1-3 The present invention provides the following technical solution: a hidden flip-up threshold for a subway floodproof door, including a threshold base 1, the threshold base 1 being embedded in the concrete ground where the subway floodproof door is located, and a flip-up cover plate 2 being provided in the recess of the inner wall of the threshold base 1.
[0019] Four hinges 3 are installed in the angle between the upper cover plate 2 and the sill base 1. Each hinge 3 is connected to the sill base 1 and the upper cover plate 2 by two bolts 4.
[0020] The flip-up cover 2 is the flip-up threshold involved in this solution. When in use, the flip-up cover 2 is flipped by the hinge 3 to achieve the function of hiding and revealing.
[0021] Preferably, a downward groove is provided on one side of the inner wall of the threshold base 1, and the bottom of the flip-up cover 2 is inserted into the groove;
[0022] A water-stop strip 5 is provided on the upper side of one side of the groove, and the other side of the water-stop strip 5 is adhered to the outer wall of the threshold base 1. When the upper cover plate 2 is inserted into the groove, one side of the upper cover plate 2 is tightly fitted with the outer wall of the water-stop strip 5.
[0023] A water-stop strip 5 is also glued to the outer wall of one side of the top of the flip-up cover plate 2.
[0024] Preferably, a rectangular opening is provided on the outer wall of the threshold base 1 on the side away from the upper flip-up cover 2, and a clamping device 6 is installed in the rectangular opening. A handle 7 is installed on the outer wall of the upper flip-up cover 2 on the side away from the water-stopping strip 5.
[0025] In actual use, the user first needs to grasp the handle 7 on the upper flip cover 2. The handle 7 is made of non-slip rubber material to ensure a stable grip even in wet environments. By applying a moderate upward and backward pulling force, the handle 7, as a transmission component, drives the upper flip cover 2 to flip around the opening end of the sill base 1 as a fulcrum.
[0026] The flipping process of the upper cover 2 relies on four sets of high-strength stainless steel hinges 3. After the upper cover 2 completes the flipping action, its end is precisely placed on the edge of the notch at the opening of the sill base 1.
[0027] At this point, the clamping device 6 installed inside the sill base 1 begins to function, evenly pressing the upper cover 2 against the opening of the sill base 1. Simultaneously, the front end of the upper cover 2 tightly adheres to the pre-embedded waterproof strip 5 on the sill base 1. This strip is made of EPDM rubber, which has excellent weather resistance and elastic recovery. Furthermore, the waterproof strip 5 on the other side of the upper cover 2 is also simultaneously pressed against the inner wall of the opening of the sill base 1, forming a double-sealing structure.
[0028] This structure effectively resists extreme situations such as heavy rainfall and flooding, and makes the operation of the top cover 2 very convenient.
[0029] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model 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 this utility model should be included within the protection scope of this utility model.
Claims
1. A concealed, upward-opening threshold for a subway flood-proof door, comprising a threshold base (1), wherein the threshold base (1) is embedded in a concrete surface, characterized in that... An upper flip-up cover plate (2) is provided in the recess of the inner wall of the threshold base (1). Four hinges (3) are installed in the angle between the upper flip-up cover (2) and the threshold base (1). Each hinge (3) is connected to the threshold base (1) and the upper flip-up cover (2) by two bolts (4).
2. The concealed upward-opening threshold of a subway flood-proof door according to claim 1, characterized in that: A downward groove is provided on one side of the inner wall of the threshold base (1), and the bottom of the upper cover plate (2) is inserted into the groove.
3. The concealed upward-opening threshold of a subway flood-proof door according to claim 2, characterized in that: A water-stop strip (5) is provided above one side of the groove, and the other side of the water-stop strip (5) is bonded to the outer wall of the threshold base (1). When the upper cover plate (2) is inserted into the groove, one side of the upper cover plate (2) is tightly fitted to the outer wall of the water-stop strip (5).
4. The concealed upward-opening threshold of a subway flood-proof door according to claim 1, characterized in that: A rectangular opening is provided on the outer wall of the threshold base (1) away from the upper cover plate (2), and a clamping device (6) is installed in the rectangular opening.
5. The concealed upward-opening threshold of a subway flood-proof door according to claim 1, characterized in that: A handle (7) is installed on the outer wall of the upper cover plate (2) away from the water-stop strip (5).