Tunnel portal water retaining structure

Abstract

The utility model discloses a tunnel portal water retaining structure, and relates to the technical field of tunnel entrances. The device comprises an intercepting ditch arranged at the bottom of a tunnel portal, a support is fixedly arranged at the bottom of the intercepting ditch, a rainwater grate is installed between the support and the intercepting ditch, a plurality of guide rails are installed on one side of the intercepting ditch, sliding plates are connected into the guide rails in a sliding mode, the same retention wall is fixedly arranged on one sides of the sliding plates, and the top of the retention wall is flush with the top of the rainwater grate. A plurality of first floating bodies are fixedly arranged on one side of the retention wall, and a limiting groove is formed in the other side of the retention wall; the control box is installed on the inner wall of one side of the tunnel portal, and a broadcaster and an infrared sensor are installed on the outer wall of the control box. According to the water retaining wall, the water retaining wall can be automatically started to ascend when much rainwater exists, the purpose of automatically retaining water is achieved, the water retaining efficiency is improved, the water retaining wall can be detected and lifted, and stable ascending of the water retaining wall is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of tunnel openings, in particular to a water retaining structure for a tunnel opening. Background Art

[0002] In recent years, with the rapid development of urbanization in my country, the urban population has continued to increase, and urban transportation infrastructure has also been rapidly built. In order to save urban ground space resources, many cities have built a large number of tunnels. Against the background of global climate change, various types of extreme rainfall weather have become increasingly frequent in recent years. Tunnels are relatively closed underground spaces. Once they encounter urban flooding, it is difficult for trapped people to escape, which is easy to cause casualties. Therefore, corresponding water retaining structures need to be set up. However, the existing water retaining structures have the following shortcomings:

[0003] At present, the water retaining structures at the tunnel entrance mainly include water retaining plates and water retaining sandbags, which need to be manually sealed by professionals. There is a certain lag and it cannot be set according to the real-time water level conditions at the tunnel entrance.

[0004] For this purpose, we proposed a tunnel entrance water retaining structure. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art that the water retaining structure at the tunnel entrance is mainly composed of water retaining plates and water retaining sandbags, which need to be manually sealed by professionals, have a certain hysteresis, and cannot be set according to the real-time situation of the water level at the tunnel entrance.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] Tunnel entrance water retaining structure, including:

[0008] A water intercepting ditch is arranged at the bottom of the tunnel entrance, a bracket is fixedly arranged at the bottom of the water intercepting ditch, a rainwater grate is installed between the bracket and the water intercepting ditch, a plurality of guide rails are installed on one side of the water intercepting ditch, a slide plate is slidably connected in each of the guide rails, a retaining wall is fixedly arranged on one side of the slide plate, the top of the retaining wall is flush with the top of the rainwater grate, a plurality of first floating bodies are fixedly arranged on one side of the retaining wall, and a limiting groove is provided on the other side of the retaining wall;

[0009] It also includes a control box installed on the inner wall of one side of the tunnel entrance, and a speaker and an infrared sensor are installed on the outer wall of the control box;

[0010] A water level detection mechanism, which is arranged on one side of the intercepting ditch and is used to detect the water level;

[0011] A limiting mechanism, which is arranged on the other side of the intercepting ditch and is used to limit the retaining wall;

[0012] A lifting mechanism is arranged below the intercepting ditch and is used for lifting the retaining wall.

[0013] In one possible design, the water level detection mechanism includes a first embedded box embedded in one side of the intercepting ditch, two first connecting pipes are fixedly penetrated on one side of the first embedded box, the first connecting pipes are connected to the intercepting ditch, a fixed pipe is fixedly provided on the top inner wall of the first embedded box, a slider and a sliding rod are slidably connected to the inner walls of the fixed pipe, the slider is located above the sliding rod, a spring is fixedly provided between the slider and the fixed pipe, a pressure sensor is fixedly provided at the bottom of the slider, a second float is fixedly provided at the bottom of the sliding rod, and a through hole is provided on the outer wall of the fixed pipe.

[0014] In a possible design, the limiting mechanism includes a second embedded box embedded in the other side of the intercepting ditch, a second connecting pipe is fixedly passed through one side of the second embedded box, the second connecting pipe is connected to the intercepting ditch, an electric push rod is fixedly provided on the inner wall of one side of the second embedded box, a limiting rod is fixedly provided at one end of the output shaft of the electric push rod, and one end of the limiting rod slides through the second connecting pipe and is located in the limiting groove.

[0015] In a possible design, the lifting mechanism includes a third embedded box embedded under the intercepting ditch, a third connecting pipe is fixedly passed through the top of the third embedded box, the third connecting pipe is connected to the intercepting ditch, a hydraulic cylinder is fixedly provided on the bottom inner wall of the third embedded box, a push rod is fixedly provided at one end of the hydraulic rod of the hydraulic cylinder, and the push rod is slidably connected to the third connecting pipe.

[0016] In a possible design, annular grooves are provided on the inner walls of the second connecting tube and the third connecting tube, sealing rings are provided in the annular grooves, and the limiting rod and the push rod pass through the sealing rings respectively.

[0017] In a possible design, sealing strips are installed on the inner walls on both sides of the tunnel opening, and the sealing strips cooperate with the water retaining wall.

[0018] In a possible design, a filter screen is fixedly disposed on the inner wall of each of the first connecting pipes, a connecting rod is fixedly disposed on one side of one of the first floating bodies, and a scraper for cleaning the filter screen is fixedly disposed on one end of the connecting rod.

[0019] In a possible design, a plurality of supports are fixedly provided at the bottom of the intercepting ditch to provide support for the retaining wall and the first floating body respectively.

[0020] In the present application, when in use, the two-stage detection threshold value of the pressure sensor and the start time of the electric push rod and the hydraulic cylinder are preset. Under normal circumstances, the top of the retaining wall is flush with the tunnel road surface and does not affect the normal passage of vehicles. When there is a lot of rain, the rainwater flows into the intercepting ditch and enters the first embedded box through the first connecting pipe. The rising water level drives the second floating body to rise, and then drives the top rod and the pressure sensor to contact. The pressure sensor transmits the signal to the control box in real time. When the pressure exceeds the first threshold value, it means that the intercepting ditch cannot completely exclude the external water, and there is a risk of overflowing the cross-cutting ditch into the tunnel. The control box sends an early warning message to the operation and maintenance management department through the network. The loudspeaker is used to notify the vehicles in the tunnel that they need to abandon their vehicles and evacuate. When the start time is reached, the control box starts the electric push rod, so that the limit rod disengages from the limit groove to release the limit on the water retaining wall. The first float drives the water retaining wall to rise. The first float rises with the water level to always keep the water retaining wall higher than the external water level. When the pressure reaches the second threshold, the control box starts the infrared sensor to detect the water retaining wall. If the water retaining wall rises normally, the hydraulic cylinder will not be started. If the water retaining wall does not rise automatically as expected, the hydraulic cylinder will be started. The hydraulic cylinder drives the top rod to lift the water retaining wall to ensure the stable rise of the water retaining wall and achieve the purpose of automatic water blocking.

[0021] Beneficial effects:

[0022] In the utility model, the tunnel entrance water retaining structure can automatically release the limit on the water retaining wall after the water level reaches a certain level through the arrangement of multiple structures such as the pressure sensor, the first float and the second float. The water retaining wall is driven to rise under the action of the second float. The second float rises together with the water level, so that the height of the water retaining wall rises together with the height of the water level, and the water retaining wall is always kept higher than the external water level, so as to achieve the purpose of automatic water retaining and improve the efficiency of water retaining.

[0023] In the utility model, the tunnel entrance water retaining structure can detect whether the water retaining wall rises by setting multiple structures such as infrared sensors, hydraulic cylinders and push rods. If the water retaining wall fails to float up automatically, the hydraulic cylinder can be started to lift it, thereby ensuring the stable rise of the water retaining wall.

[0024] In the utility model, the water retaining wall can be automatically started to rise when there is a lot of rain, so as to achieve the purpose of automatic water retaining and improve the efficiency of water retaining. The water retaining wall can also be detected and lifted to ensure the stable rise of the water retaining wall. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0026] Figure 1 This is a schematic diagram of a three-dimensional structure of an embodiment of the utility model;

[0027] Figure 2 This is a schematic diagram of the exploded structure of an embodiment of the utility model;

[0028] Figure 3 This is a schematic diagram of the internal structure of the first embedded box in one embodiment of the utility model;

[0029] Figure 4 This is a schematic diagram of the internal structure of the second embedded box in one embodiment of the utility model;

[0030] Figure 5 This is a schematic diagram of the internal structure of the third embedded box according to an embodiment of the utility model.

[0031] In the figure: 1. intercepting ditch; 2. control box; 3. sealing strip; 4. bracket; 5. rainwater grate; 6. guide rail; 7. slide plate; 8. retaining wall; 9. first floating body; 10. limiting groove; 11. support; 12. connecting rod; 13. scraper; 14. first embedded box; 15. second embedded box; 16. third embedded box; 17. first connecting pipe; 18. filter screen; 19. fixed pipe; 20. sliding rod; 21. second floating body; 22. slider; 23. pressure sensor; 24. spring; 25. through hole; 26. electric push rod; 27. limiting rod; 28. second connecting pipe; 29. ​​sealing ring; 30. hydraulic cylinder; 31. third connecting pipe; 32. push rod. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] In the description of the present invention, it should be understood that the terms "opening", "upper", "middle", "length", "inside" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0034] In order to keep the following description of the embodiments of the present invention clear and concise, the present invention omits detailed descriptions of known functions and known components.

[0035] Example 1

[0036] Reference Figure 1-Figure 5 , water retaining structure, including:

[0037] A drainage ditch 1 is arranged at the bottom of the tunnel entrance, and is used to collect and guide the rainwater near the tunnel entrance to be discharged. A bracket 4 is fixedly arranged at the bottom of the drainage ditch 1, and a rainwater grate 5 is installed between the bracket 4 and the drainage ditch 1. A plurality of guide rails 6 are installed on one side of the drainage ditch 1, and slide plates 7 are slidably connected in the guide rails 6. A retaining wall 8 is fixedly arranged on one side of the slide plate 7, and the top of the retaining wall 8 is flush with the top of the rainwater grate 5 to facilitate the passage of vehicles under normal circumstances. A plurality of first floating bodies 9 are fixedly arranged on one side of the retaining wall 8, and a limiting groove 10 is provided on the other side of the retaining wall 8;

[0038] It also includes a control box 2 installed on the inner wall of one side of the tunnel entrance, and a speaker and an infrared sensor are installed on the outer wall of the control box 2. The speaker is used to play voice information into the tunnel, and the infrared sensor is used to detect the state of the retaining wall 8;

[0039] A water level detection mechanism is arranged at one side of the intercepting ditch 1 and is used to detect the water level. The water level detection mechanism comprises a first embedded box 14 embedded at one side of the intercepting ditch 1. Two first connecting pipes 17 are fixedly penetrated at one side of the first embedded box 14. The first connecting pipes 17 are both connected to the intercepting ditch 1. A fixed pipe 19 is fixedly arranged on the inner wall of the top of the first embedded box 14. A slider 22 and a slide bar 20 are slidably connected to the inner wall of the fixed pipe 19. The slider 22 is located above the slide bar 20. A spring 24 is fixedly arranged between the slider 22 and the fixed pipe 19. A pressure sensor 23 is fixedly arranged at the bottom of the slider 22. A second float 21 is fixedly arranged at the bottom of the slide bar 20. A through hole 25 is arranged on the outer wall of the fixed pipe 19. The second float 21 rises with the water level rising, pushing the slider 22 to compress the spring 24, thereby triggering the pressure sensor 23 to realize the water level detection. A corresponding threshold value is set for the water level detection, and the control box 2 makes a judgment according to the signal transmitted by the pressure sensor 23.

[0040] The limiting mechanism is arranged on the other side of the intercepting ditch 1 and is used to limit the retaining wall 8. The limiting mechanism includes a second embedded box 15 embedded in the other side of the intercepting ditch 1. A second connecting pipe 28 is fixedly penetrated through one side of the second embedded box 15. The second connecting pipe 28 is connected to the intercepting ditch 1. An electric push rod 26 is fixedly arranged on the inner wall of one side of the second embedded box 15. A limiting rod 27 is fixedly arranged at one end of the output shaft of the electric push rod 26. One end of the limiting rod 27 slides through the second connecting pipe 28 and is located in the limiting groove 10. When the water level reaches the first threshold, the control box 2 starts the electric push rod 26, so that the limiting rod 27 falls off the limiting groove 10, so that the first float 9 drives the retaining wall 8 to rise.

[0041] A lifting mechanism is arranged below the intercepting ditch 1 and is used to lift the retaining wall 8. The lifting mechanism includes a third embedded box 16 embedded below the intercepting ditch 1. A third connecting pipe 31 is fixedly penetrated through the top of the third embedded box 16. The third connecting pipe 31 is communicated with the intercepting ditch 1. A hydraulic cylinder 30 is fixedly arranged on the inner wall of the bottom of the third embedded box 16. A push rod 32 is fixedly arranged at one end of the hydraulic rod of the hydraulic cylinder 30. The push rod 32 and the third connecting pipe 31 are slidably connected. When the water level reaches the second threshold value, the control box 2 starts the infrared sensor to detect the retaining wall 8. If the retaining wall 8 rises normally, the hydraulic cylinder 30 is not started. If the retaining wall 8 does not rise automatically as expected, the hydraulic cylinder 30 is started, and the hydraulic cylinder 30 drives the push rod 32 to lift the retaining wall 8.

[0042] The present application can be used in the field of tunnel entrances, and can also be used in other fields applicable to the present application.

[0043] Example 2

[0044] The improved tunnel entrance water retaining structure based on Example 1 is applied to the tunnel entrance field;

[0045] In one aspect of the present embodiment, an annular groove is formed on the inner wall of the second connecting pipe 28 and the third connecting pipe 31, and a sealing ring 29 is arranged in the annular groove. The limiting rod 27 and the top rod 32 pass through the sealing ring 29 respectively, so as to improve the sealing performance of the structure and prevent water from entering the second embedded box 15 or the third embedded box 16.

[0046] In one aspect of this embodiment, sealing strips 3 are installed on the inner walls on both sides of the tunnel entrance. The sealing strips 3 cooperate with the water retaining wall 8 to prevent water from entering the tunnel from both sides of the water retaining wall 8, thereby ensuring the water retaining effect.

[0047] In one aspect of the present embodiment, a filter screen 18 is fixedly provided on the inner wall of the first connecting tube 17 to filter impurities. A connecting rod 12 is fixedly provided on one side of a first floating body 9, and a scraper 13 for cleaning the filter screen 18 is fixedly provided on one end of the connecting rod 12. When the first floating body 9 rises, the scraper 13 can be driven to clean the filter screen 18 to avoid blockage of the filter screen 18.

[0048] In one aspect of this embodiment, a plurality of supports 11 are fixedly provided at the bottom of the intercepting ditch 1 to provide support for the retaining wall 8 and the first floating body 9 respectively.

[0049] It should be noted that, in the description of this specification, descriptions such as "first", "second", etc. are merely used to distinguish between various features and have no actual order or directional meaning, and this application is not limited to this.

[0050] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0051] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. Tunnel entrance water retaining structure, characterized in that: include: A water intercepting ditch (1) is arranged at the bottom of a tunnel entrance, a bracket (4) is fixedly arranged at the bottom of the water intercepting ditch (1), a rainwater grate (5) is installed between the bracket (4) and the water intercepting ditch (1), a plurality of guide rails (6) are installed on one side of the water intercepting ditch (1), a slide plate (7) is slidably connected in each of the guide rails (6), a retaining wall (8) is fixedly arranged on one side of the slide plate (7), a top of the retaining wall (8) is flush with a top of the rainwater grate (5), a plurality of first floating bodies (9) are fixedly arranged on one side of the retaining wall (8), and a limiting groove (10) is provided on the other side of the retaining wall (8); It also includes a control box (2) installed on the inner wall of one side of the tunnel entrance, and a speaker and an infrared sensor are installed on the outer wall of the control box (2); A water level detection mechanism, which is arranged on one side of the intercepting ditch (1) and is used to detect the water level; A limiting mechanism, the limiting mechanism being arranged on the other side of the intercepting ditch (1) and being used for limiting the water retaining wall (8); A lifting mechanism is arranged below the intercepting ditch (1) and is used to lift the water retaining wall (8).

2. The tunnel entrance water retaining structure according to claim 1, characterized in that: The water level detection mechanism comprises a first embedded box (14) embedded in one side of the intercepting ditch (1), two first connecting pipes (17) are fixedly penetrated on one side of the first embedded box (14), and the first connecting pipes (17) are both connected to the intercepting ditch (1). A fixed pipe (19) is fixedly arranged on the top inner wall of the first embedded box (14), and a slider (22) and a slide bar (20) are slidably connected to the inner wall of the fixed pipe (19), respectively. The slider (22) is located above the slide bar (20), a spring (24) is fixedly arranged between the slider (22) and the fixed pipe (19), a pressure sensor (23) is fixedly arranged at the bottom of the slider (22), a second float (21) is fixedly arranged at the bottom of the slide bar (20), and a through hole (25) is arranged on the outer wall of the fixed pipe (19).

3. The tunnel entrance water retaining structure according to claim 2, characterized in that: The limiting mechanism comprises a second embedded box (15) embedded in the other side of the intercepting ditch (1); a second connecting pipe (28) is fixedly passed through one side of the second embedded box (15); the second connecting pipe (28) and the intercepting ditch (1) are connected; an electric push rod (26) is fixedly provided on the inner wall of one side of the second embedded box (15); a limiting rod (27) is fixedly provided at one end of the output shaft of the electric push rod (26); one end of the limiting rod (27) slides through the second connecting pipe (28) and is located in the limiting groove (10).

4. The tunnel entrance water retaining structure according to claim 3, characterized in that: The lifting mechanism comprises a third embedded box (16) embedded below the intercepting ditch (1); a third connecting pipe (31) is fixedly passed through the top of the third embedded box (16); the third connecting pipe (31) is communicated with the intercepting ditch (1); a hydraulic cylinder (30) is fixedly provided on the inner wall of the bottom of the third embedded box (16); a push rod (32) is fixedly provided at one end of the hydraulic rod of the hydraulic cylinder (30); and the push rod (32) and the third connecting pipe (31) are slidably connected.

5. The tunnel entrance water retaining structure according to claim 4, characterized in that: The inner walls of the second connecting tube (28) and the third connecting tube (31) are both provided with an annular groove, a sealing ring (29) is arranged in the annular groove, and the limiting rod (27) and the push rod (32) pass through the sealing ring (29) respectively.

6. The tunnel entrance water retaining structure according to claim 5, characterized in that: Sealing strips (3) are installed on the inner walls on both sides of the tunnel opening, and the sealing strips (3) and the water retaining wall (8) cooperate with each other.

7. The tunnel entrance water retaining structure according to claim 6, characterized in that: The inner wall of the first connecting pipe (17) is fixedly provided with a filter screen (18), one side of one of the first floating bodies (9) is fixedly provided with a connecting rod (12), and one end of the connecting rod (12) is fixedly provided with a scraper (13) for cleaning the filter screen (18).

8. The tunnel entrance water retaining structure according to claim 7, characterized in that: A plurality of supports (11) are fixedly arranged at the bottom of the intercepting ditch (1) to provide support for the water retaining wall (8) and the first floating body (9) respectively.

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