A lifting floodgate system in a subway tunnel

Abstract

The present application provides a lifting floodgate system in a subway tunnel. The system includes a lifting floodgate, a floodgate avoidance groove, and a support plate. A floodgate avoidance groove is formed between the interval evacuation platform in the subway interval tunnel and the platform slab of the subway platform. The lifting floodgate is directly above the floodgate avoidance groove, and when the lifting floodgate drops, it inserts into the floodgate avoidance groove. Through the lifting floodgate system in a subway tunnel described in the present invention, when meeting the flood conditions, on the premise that the lifting floodgate can smoothly descend and close to achieve the water blocking function, when the lifting floodgate has not dropped and it is necessary to evacuate passengers through the evacuation platform, the personnel in the interval can be quickly and smoothly evacuated to the platform slab, avoiding the need to go up and down the stairs twice for evacuation, reducing the risk during the process of personnel going up and down the stairs, ensuring the safety and efficiency of the evacuation process, and effectively avoiding the occurrence of major safety liability accidents.

Description

Technical Field

[0001] This application relates to the field of evacuation in subway interval tunnels, and particularly to a lift-type floodgate system in a subway tunnel. Background Art

[0002] In recent years, the urban population has been increasing continuously. Due to the characteristics of large passenger capacity, convenience, safety, and punctuality of subway rail transit, it has gradually developed into an important way to solve the increasingly tense urban traffic problems. At the same time, extreme weather occurs frequently in various places, and the situation of urban waterlogging is also becoming increasingly frequent. In order to effectively avoid urban waterlogging or flood flowing into the connected intervals of subway stations, lift-type floodgates are generally installed in subway interval tunnels crossing canals and lakes.

[0003] Currently, for stations equipped with lift-type floodgates, a floodgate avoidance groove needs to be set between the evacuation platform in the subway interval tunnel and the platform slab of the subway platform. To provide conditions for the smooth closing of the lift-type floodgate, however, the evacuation platform in the subway interval tunnel and the platform slab of the subway platform cannot be smoothly connected. When the lift-type floodgate is not lowered and passengers need to be evacuated through the evacuation platform, the evacuation path of passengers is from the evacuation platform to the track bed and then through the platform slab stairs to the platform slab, resulting in obstacles such as signal transponders, rails, and drainage ditches on the passenger evacuation path, which will greatly affect the evacuation efficiency and seriously affect the personal safety of passengers during evacuation under extreme working conditions, and it is impossible to achieve efficient and safe evacuation.

[0004] Therefore, an improved technical solution is needed to address the deficiencies of the above-mentioned existing technologies. Summary of the Invention

[0005] The purpose of this application is to provide a lift-type floodgate system in a subway tunnel to solve or alleviate the problems existing in the above-mentioned existing technologies.

[0006] To achieve the above purpose, this application provides the following technical solution: A lift-type floodgate system in a subway tunnel, comprising:

[0007] A lift-type floodgate, which is arranged between the subway platform and the subway interval tunnel. When the lift-type floodgate is in the high position, it is stored in the subway concourse; after the lift-type floodgate falls, it separates the subway platform and the subway interval tunnel to block the fluid on one side of the lift-type floodgate.

[0008] A floodgate avoidance groove, which is formed between the interval evacuation platform in the subway interval tunnel and the platform slab of the subway platform. The lift-type floodgate is directly above the floodgate avoidance groove, and when the lift-type floodgate falls, it inserts into the floodgate avoidance groove.

[0009] The supporting plate, when the number of the supporting plates is one, is hinged to the evacuation platform or the platform slab in the interval; or, when the number of the supporting plates is two and they are arranged oppositely, one supporting plate is hinged to the evacuation platform in the interval, and the other is hinged to the platform slab.

[0010] The supporting plate has a working position and an avoidance position in the swinging stroke around its own hinge axis. When in the working position, the supporting plate blocks the top opening of the floodgate avoidance groove for people to pass between the evacuation platform and the platform slab; when in the avoidance position, it is received in the floodgate avoidance groove to avoid the falling lifting floodgate.

[0011] Furthermore, the lifting floodgate system further includes a supporting device, and the supporting device is used to fix the position of the supporting plate when the supporting plate is in the working position.

[0012] Furthermore, it further includes a driving device, and the driving device is used to drive the supporting plate to swing around its own hinge axis.

[0013] Furthermore, the supporting device is a hydraulic cylinder, the hydraulic cylinder is hinged to the groove side wall of the floodgate avoidance groove, and the output end of the hydraulic cylinder is hinged to the supporting plate.

[0014] Furthermore, the hydraulic cylinder is reused as the driving device.

[0015] Furthermore, when the lifting floodgate falls and the supporting plate is in the working position, the lifting floodgate uses its own weight to overcome the acting force of the supporting device and drives the supporting plate to swing from the working position to the avoidance position.

[0016] Furthermore, the supporting plate is made of steel plate with a thickness of 4 mm to 6 mm.

[0017] Furthermore, when the supporting plate is in the working position, its top surface is flush with the top surfaces of the evacuation platform and the platform slab.

[0018] Furthermore, the maximum output pressure of the hydraulic cylinder is the self-weight of the supporting plate plus 4 kPa to 5 kPa, and the self-weight of the floodgate is 8 tons to 12 tons.

[0019] Furthermore, the widths of the evacuation platform in the interval and the platform slab at the floodgate avoidance groove are not less than 600 mm, and the width of the supporting plate is not less than 600 mm.

[0020] Beneficial effects

[0021] 1) Through the lift-type floodgate system in the subway tunnel described in the present invention, when meeting the flood condition, on the premise that the lift-type floodgate can smoothly descend and close to achieve the function of blocking water, when the lift-type floodgate has not fallen and it is necessary to evacuate passengers through the evacuation platform, the personnel in the interval can be quickly and smoothly evacuated to the platform slab, avoiding the need to go up and down the stairs twice for evacuation, reducing the risk during the process of personnel going up and down the stairs, ensuring the safety and efficiency of the evacuation process, and effectively avoiding the occurrence of major safety liability accidents.

[0022] 2) The driving device is set to be able to quickly control the swing of the support plate, enabling rapid evacuation and reducing the labor intensity of the operator.

[0023] 3) The hydraulic cylinder technology is mature and reliable, which can preferably avoid the occurrence of accidents caused by the failure of the support device.

[0024] 4) The driving device utilizes the existing hydraulic cylinder without adding new devices, with a simple structure and relatively low purchase and maintenance costs.

[0025] 5) The lift-type floodgate can press down the support plate by its own weight and can quickly fall in an emergency, which is beneficial to the work of water isolation and flood prevention.

[0026] 6) The length of the two support plates is 50 mm to 100 mm smaller than the width of the avoidance groove, avoiding mutual interference of the partitions during the swinging process.

[0027] 7) When the support plate is in the working position, its top surface is flush with the top surface of the evacuation platform and the top surface of the platform slab, which is beneficial to the safety of personnel during evacuation.

[0028] 8) The width of the support plate is not less than 600 mm, forming an evacuation path with sufficient width and reducing the risk of personnel falling during evacuation. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The schematic drawings forming a part of this application are used to provide a further understanding of this application. The illustrative embodiments and descriptions thereof of this application are used to explain this application and do not constitute an improper limitation to this application. Among them:

[0030] Figure 1 is a top view of a specific embodiment of the lift-type floodgate system in the subway tunnel of the present invention;

[0031] Figure 2 is Figure 1 the front view of the lift-type floodgate system in the subway tunnel when the lift-type floodgate has not fallen in the illustrated embodiment;

[0032] Figure 3 is Figure 1 the front view after the lift-type floodgate in it has fallen;

[0033] Figure 4 is Figure 2 an enlarged view of part A in

[0034] Figure 5 is Figure 3 an enlarged view of part B in

[0035] Figure 6 is Figure 4 a sectional view taken along line C-C in

[0036] Description of reference numerals:

[0037] 1 - Lift - type flood - prevention door; 2 - Support plate; 3 - Interval evacuation platform; 4 - Platform slab; 5 - Hydraulic cylinder; 6 - Hinge axis. Specific embodiments

[0038] The present application will be described in detail below with reference to the drawings and in conjunction with embodiments. Each example is provided by way of explanation of the present application rather than a limitation of the present application. In fact, those skilled in the art will clearly understand that modifications and variations can be made to the present application without departing from the scope or spirit of the present application. For example, features shown or described as part of one embodiment can be used in another embodiment to yield yet another embodiment. Therefore, it is desirable that the present application includes such modifications and variations that fall within the scope of the appended claims and their equivalents.

[0039] In the description of the present application, the orientation or positional relationships indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", etc. are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of describing the present application rather than requiring the present application to be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present application. The terms "connected", "connected to", "disposed" used in the present application should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be directly connected or indirectly connected through an intermediate component; for those of ordinary skill in the art, the specific meanings of the above terms can be understood according to specific circumstances.

[0040] The present invention provides a specific embodiment of a lift - type flood - prevention door system in a subway tunnel. As Figures 1 to 6 shown, a lift - type flood - prevention door system in a subway tunnel includes a lift - type flood - prevention door 1, a flood - prevention door avoidance groove, a support plate 2, a support device, and a driving device.

[0041] The lift - type flood - prevention door 1 is disposed between the subway platform and the subway interval tunnel. As Figure 2 shown, when the lift - type flood - prevention door 1 is in the high position, it is stored in the subway concourse. As Figure 3As shown, after the lifting floodgate 1 drops, it separates the subway platform and the subway tunnel section to block the fluid on one side of the lifting floodgate 1, thus protecting lives, economy and property during floods and emergency rescue operations. The thickness of the lifting floodgate 1 is 600 mm to 700 mm, specifically it can be 620 mm, 640 mm, 660 mm, 680 mm and 700 mm, to ensure high structural strength and resist water pressure during flood outbreaks. The self-weight of the floodgate is 8 tons to 12 tons, specifically it can be 8 tons, 9 tons, 10 tons, 11 tons and 12 tons, so that it can quickly fall by its own gravity in case of emergency.

[0042] A floodgate avoidance groove is formed between the section evacuation platform 3 of the subway tunnel section and the platform slab 4 of the subway platform. The floodgate avoidance groove is used for the lifting floodgate 1 to insert when it drops. The setting of the floodgate avoidance groove can also increase the flow path of the flood when the lifting floodgate 1 drops and floods break out, which is beneficial to flood control and emergency rescue work. The width of the floodgate avoidance groove is 800 mm, 820 mm, 840 mm, 860 mm, 880 mm and 900 mm.

[0043] The purpose that the width of the floodgate avoidance groove is at least 100 mm larger than the thickness of the lifting floodgate 1 is: when the falling trajectory of the lifting floodgate does not completely follow the predetermined trajectory, it can ensure that the lifting floodgate 1 falls into the floodgate avoidance groove without hitting the top surface of the evacuation platform or the top surface of the platform slab, and can reduce the requirement for the installation accuracy of the lifting floodgate 1. The evacuation platform adopts a concrete structure, and the width of the section evacuation platform 3 and the platform slab 4 at the floodgate avoidance groove is not less than 600 mm.

[0044] The support plate 2 is made of steel plate, and its thickness is 4 mm to 6 mm, specifically it can be 4 mm, 5 mm and 6 mm, which can prevent damage due to excessive stress when too many people pass through the support plate 2 at the same time during crowd evacuation. The width of the support plate 2 is not less than 600 mm. The width of the section evacuation platform 3 and the platform slab 4 at the floodgate avoidance groove and the width of the support plate 2 are not less than 600 mm, which is convenient for evacuees to move and reduces the risk of evacuees falling. When the number of the support plates 2 is one, it is hinged on the section evacuation platform 3 or the platform slab 4; or, when the number of the support plates 2 is two and they are arranged oppositely, one support plate 2 is hinged on the section evacuation platform 3 and the other is hinged on the platform slab 4.

[0045] In this embodiment, a solution of selecting two support plates 2 is adopted. The purpose is to quickly vacate the top opening of the floodgate avoidance groove when the lifting floodgate 1 descends, so as to quickly avoid the lifting floodgate 1. The support plate 2 has a working position and an avoidance position in the swinging stroke around its own hinge axis 6. When in the working position, the support plate 2 blocks the top opening of the floodgate avoidance groove for people to pass between the evacuation platform and the platform board 4. And when in the working position, the top surface of the support plate 2 is flush with the top surface of the evacuation platform and the top surface of the platform board 4. As a preferred solution, it provides convenience for the movement of evacuated people and is beneficial to the safety of people during evacuation. When in the avoidance position, it is stored in the floodgate avoidance groove to avoid the falling lifting floodgate 1. The sum of the lengths of the two support plates 2 is 50 mm to 100 mm smaller than the width of the avoidance groove. Among them, the length of the support plate 2 is the dimension of the support plate 2 in the width direction of the floodgate avoidance groove when in the working position. 50 mm to 100 mm can avoid mutual interference of the support plates 2 during swinging and will not cause great trouble to the evacuated crowd.

[0046] The support device is used to fix the position of the support plate 2 when the support plate 2 is in the working position. The support device is a hydraulic cylinder 5. The hydraulic cylinder 5 is hinged on the side wall of the floodgate avoidance groove, and the output end of the hydraulic cylinder 5 is hinged to the support plate 2. In other embodiments, the support device may not be provided, and the damping effect of the configured damping device is relied on to keep the support plate in the working position. The hydraulic cylinder 5 is reused as a driving device. The driving device is used to drive the support plate 2 to swing around its own hinge axis 6. The maximum output pressure of the hydraulic cylinder 5 is the self-weight of the support plate 2 plus 4 kPa to 5 kPa, specifically it can be 4 kPa, 4.5 kPa, 5 kPa, etc., to provide reliable support for the crowd during evacuation. In this embodiment, the hydraulic cylinder forms the driving device and the support device, with a simple structure and relatively low purchase and maintenance costs. The hydraulic cylinder forms the driving device, which can quickly control the swing of the support plate, can achieve rapid evacuation, and can reduce the labor intensity of the operator. The hydraulic cylinder forms the support device, with mature and reliable technology, and can better avoid accidents caused by the failure of the support device. In other embodiments, the driving device and the support device can be formed by independent devices respectively. For example: the driving device is a pulling rope, one end of the pulling rope is fixed on the support plate, and the other end is held by the operator. By applying a force by the operator, the position of the support plate can be changed upward. When changing the position of the support plate downward, only need to loosen the pulling rope. The support device is a support rod, one end of the support rod is hinged on the corresponding interval evacuation platform or platform board, and the other end has a folding part. A support ring is fixed at a position on the lower plate surface of the support plate far from the hinge axis. When the support plate is in the support position, the folding part is inserted into the support ring, and the support rod, the support plate and the corresponding interval evacuation platform or platform board form a triangular structure, and the support rod fixes the position of the support plate, playing the role of the support device.

[0047] When the liftable flood control door 1 is lowered and the support plate 2 is in the working position, the liftable flood control door 1 overcomes the force of the support device and drives the support plate 2 to swing from the working position to the avoidance position. In an emergency, the liftable flood control door can be quickly lowered, facilitating water isolation and flood prevention work. In non-emergency situations, the hydraulic cylinder is generally used to first drive the support plate 2 from the working position to the avoidance position, and then the liftable flood control door is controlled to fall.

[0048] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, various modifications and variations of the present application are possible. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. An elevating floodgate system in a subway tunnel, characterized in that, including a lifting floodgate, which is arranged between the subway platform and the subway tunnel section. When the lifting floodgate is in the high position, it is stored in the subway concourse; when the lifting floodgate drops, it separates the subway platform and the subway tunnel section to block the fluid on one side of the lifting floodgate; a floodgate avoidance groove, which is formed between the platform evacuation platform of the subway tunnel section and the platform slab of the subway platform. The lifting floodgate is directly above the floodgate avoidance groove, and when the lifting floodgate drops, it inserts into the floodgate avoidance groove; the width of the floodgate avoidance groove is at least 100 mm larger than the thickness of the lifting floodgate; a support plate. When the number of the support plates is one, it is hinged on the platform evacuation platform or the platform slab; or when the number of the support plates is two and they are arranged oppositely, one support plate is hinged on the platform evacuation platform and the other is hinged on the platform slab; the support plate has a working position and an avoidance position in the swinging stroke around its own hinge axis. When in the working position, the support plate blocks the top opening of the floodgate avoidance groove to allow people to pass between the evacuation platform and the platform slab; when in the avoidance position, it is stored in the floodgate avoidance groove to avoid the dropping lifting floodgate; a support device, which is used to fix the position of the support plate when the support plate is in the working position; when the lifting floodgate drops and the support plate is in the working position, the lifting floodgate uses its own weight to overcome the acting force of the support device and drives the support plate to swing from the working position to the avoidance position.

2. The lift type floodgate system in a subway tunnel according to claim 1, characterized in that, It further includes a driving device, which is used to drive the support plate to swing around its own hinge axis.

3. The lift-type floodgate system in a subway tunnel according to claim 2, wherein The support device is a hydraulic cylinder, which is hinged on the side wall of the groove of the floodgate avoidance groove, and the output end of the hydraulic cylinder is hinged with the support plate.

4. The lift type floodgate system in a subway tunnel according to claim 3, wherein, The hydraulic cylinder is reused as the driving device.

5. The lift-type floodgate system in a subway tunnel according to claim 1, wherein The support plate is made of steel plate with a thickness of 4 mm to 6 mm.

6. The lift-type floodgate system in a subway tunnel according to claim 1, characterized in that, When the support plate is in the working position, its top surface is flush with the top surface of the evacuation platform and the top surface of the platform slab.

7. The lift type floodgate system in a subway tunnel according to claim 4, characterized in that, The maximum output pressure of the hydraulic cylinder is the weight of the support plate plus 4 kPa to 5 kPa, and the self-weight of the floodgate is 8 tons to 12 tons.

8. The lift-type floodgate system in a subway tunnel according to claim 1, wherein, The widths of the platform evacuation platform and the platform slab at the floodgate avoidance groove are not less than 600 mm, and the width of the support plate is not less than 600 mm.

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