Drainage structure of underneath passing hidden section tunnel

Abstract

The utility model discloses an underneath-penetrating buried section tunnel drainage structure which comprises a water collecting pipe buried at the bottom of a tunnel, a connecting opening is formed in the water collecting pipe, a downcast pipe well is connected to the connecting opening in a threaded mode, a connecting sleeve is arranged outside the connecting opening in a sleeving mode, an elastic piece is arranged between the connecting sleeve and the connecting opening, and a connecting rod is arranged on the inner wall of the connecting sleeve. The connecting rod penetrates and extends into the connecting port, and the connecting rod is connected with a detection ball through an inhaul cable. When the downcast tube well is installed on the water collecting pipe, if the water collecting pipe is in a deflection state, the detection ball can pull the connecting sleeve to bounce through the connecting rod, so that the connecting sleeve and the connecting port are in a non-concentric state, and normal screwing of the downcast tube well at the connecting port is hindered. Compared with the prior art, when the drainage structure is installed, the water collecting pipe can be prevented from being in an inclined state, and therefore the situation that a water inlet of the downcast tube well deviates from the center of the bottom of the tunnel is not prone to occurring.

Description

Technical Field

[0001] The utility model relates to the technical field of tunnel construction, in particular to a drainage structure for an underpass concealed tunnel section. Background Art

[0002] An underpass tunnel section is a section of tunnel that, during tunnel construction, passes beneath and is concealed beneath other structures (such as buildings, roads, and pipelines). Due to the low terrain, water easily accumulates within the tunnel, making drainage structures essential for underpass tunnels.

[0003] Currently, Chinese patent publication number CN209780959U discloses a drainage structure for a subway tunnel. The structure includes a water collection pipe buried at the bottom of the tunnel, along with a drainage well. The well is secured to the collection pipe via threaded connections or welding. However, when the collection pipe is buried, the well can easily tilt. This can cause the well's water inlet to deviate from the center of the tunnel bottom, allowing water to accumulate in the concrete screed, impacting the tunnel's structural safety. Utility Model Content

[0004] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a drainage structure for an underpass in a concealed tunnel.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] A drainage structure for an underground buried tunnel comprises a water collecting pipe buried at the bottom of the tunnel, the water collecting pipe being provided with a connecting port, the connecting port being threadedly connected to a downpipe well, a connecting sleeve being provided on the outer shell of the connecting port, an elastic member being provided between the connecting sleeve and the connecting port, a connecting rod being provided on the inner wall of the connecting sleeve, the connecting rod extending through the connecting port, and a detection ball being connected to the connecting rod via a cable.

[0007] Preferably, there are two elastic members arranged opposite to each other in the transverse direction of the water collecting pipe.

[0008] Preferably, the elastic member and the connecting rod are in the same cross section.

[0009] Preferably, the elastic member is a spring, and the spring is sleeved on the outside of the connecting rod.

[0010] Preferably, both ends of the connecting rod abut against the inner wall of the connecting sleeve.

[0011] Preferably, the cable is connected to the middle portion of the connecting rod.

[0012] Preferably, the detection ball is a hollow structure, the connecting rod is rotatably connected to the connecting sleeve, and the diameter of the detection ball is larger than the diameter of the connecting port.

[0013] Preferably, the detection ball is made of memory metal.

[0014] The beneficial effect of this utility model is that when the downspout manhole is installed on the water collection pipe, if the water collection pipe is in a deflected state, the detection ball will pull the connecting sleeve through the connecting rod, causing it to bounce. As a result, the connecting sleeve and the connecting port are not concentric, thereby hindering the downspout manhole from being properly screwed into the connecting port. Compared with the existing technology, the drainage structure of this utility model can prevent the water collection pipe from being tilted during installation, and thus is less likely to cause the water inlet of the downspout manhole to deviate from the center of the tunnel bottom. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural diagram of an embodiment;

[0016] Figure 2 Schematic diagram of the connecting rod structure.

[0017] Figure numerals: 1, water collecting pipe; 2, connecting port; 3, downspout well; 4, connecting sleeve; 5, elastic part; 6, connecting rod; 7, detection ball. DETAILED DESCRIPTION

[0018] The following will be combined with the embodiments to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work shall fall within the scope of protection of the present invention.

[0019] A drainage structure for an underground buried tunnel includes a water collection pipe 1 buried at the bottom of the tunnel. The specific burial method can be found in Patent Publication No. CN209780959U, which is incorporated herein by reference. Similar to the prior art, water collection pipe 1 is provided with a connection port 2. For example, connection port 2 can be formed by a connecting pipe provided on water collection pipe 1, and the outer wall of the connecting pipe is provided with external threads. A downpipe 3 for collecting and draining water is fixed to the connecting pipe via a threaded connection.

[0020] A connecting sleeve 4 is mounted on the outer surface of the connecting pipe, with an elastic member 5 positioned between the sleeve 4 and the connecting pipe. This allows the sleeve 4 to be movable on the connecting pipe, specifically to adjust the concentric position of the sleeve 4 and the connecting pipe. During installation, the downspout 3 can be inserted between the sleeve 4 and the connecting pipe and then screwed onto the external threads. To automatically sense the deflection of the water collection pipe 1, a connecting rod 6 is also installed on the inner wall of the sleeve 4. The connecting rod 6 extends through the connection port 2 and is connected to a detection ball 7 via a cable.

[0021] If the water collecting pipe 1 is deflected, meaning that the connection port 2 is not pointing vertically upward, the detection ball 7 will pull the connecting rod 6 under the action of gravity, causing the connecting sleeve 4 to spring, and the connecting sleeve 4 and the connecting pipe to be out of center. In other words, the space between the connecting sleeve 4 and the connecting pipe for installing the downspout 3 will be changed, making it difficult to insert the downspout 3 into the space and even impossible to install by screwing.

[0022] In some embodiments, the connecting rod 6 extends throughout the entire connecting pipe, meaning both ends of the connecting rod 6 abut the inner wall of the connecting sleeve 4. For example, the elastic member 5 and the connecting rod 6 are located within the same cross-section of the connecting pipe, particularly with two elastic members 5 positioned opposite each other along the transverse direction of the water collection pipe 1. By locating the elastic member 5 and the connecting rod 6 within this cross-section, the deflection of the water collection pipe 1 can more stably and directly cause the connecting rod 6 to slide via the detection ball 7, ultimately changing the aforementioned installation space.

[0023] Preferably, the elastic member 5 can be a spring and is sleeved on the outside of the connecting rod 6. The cable is arranged in the middle of the connecting rod 6. This makes the connecting pipe and the connecting sleeve 4 more symmetrical overall, and the detection ball 7 is more likely to cause the connecting rod 6 to slide when the water collection pipe 1 deflects.

[0024] In some embodiments, the detection ball 7 can also be preferably hollowed out, and the connecting rod 6 can be rotated to fit within the connecting sleeve 4. For example, the diameter of the detection ball 7 can be adapted to be larger than the diameter of the connecting port 2. After the downcomer 3 is installed, the connecting rod 6 can be rotated to reel in the cable, and the detection ball 7 will move upward to block the connecting port 2, thereby achieving a filtering function at the connecting port 2. This filtering prevents impurities from entering the water collection pipe 1 and causing blockage.

[0025] In a possible approach, the detection ball 7 is fitted into the water collecting pipe 1 during the manufacturing process of the water collecting pipe 1. For example, the water collecting pipe 1 can be welded together in multiple sections, and the detection ball 7 can be inserted from the water collecting pipe 1 into the connecting port 2. Alternatively, the detection ball 7 can be made of memory metal and enter the water collecting pipe 1 through the connecting pipe by extrusion deformation.

[0026] The above description is merely a preferred embodiment of the present invention. It should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the concept described herein through the above teachings or techniques or knowledge in the relevant fields. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A drainage structure for an underground buried tunnel, comprising a water collecting pipe (1) buried at the bottom of the tunnel, wherein the water collecting pipe (1) is provided with a connection port (2), and a downpipe well (3) is threadedly connected to the connection port (2), wherein the structure is characterized by: The outer cover of the connecting port (2) is provided with a connecting sleeve (4), an elastic member (5) is provided between the connecting sleeve (4) and the connecting port (2), a connecting rod (6) is provided on the inner wall of the connecting sleeve (4), the connecting rod (6) extends through the connecting port (2), and a detection ball (7) is connected to the connecting rod (6) via a cable.

2. The drainage structure for an underground buried tunnel according to claim 1 is characterized by: There are two elastic members (5) arranged opposite to each other in the transverse direction of the water collecting pipe (1).

3. The drainage structure for an underpass tunnel according to claim 1 or 2, characterized in that: The elastic member (5) and the connecting rod (6) are in the same cross section.

4. The drainage structure for an underground buried tunnel according to claim 3 is characterized by: The elastic member (5) is a spring, and the spring is sleeved on the outside of the connecting rod (6).

5. The drainage structure for an underground buried tunnel according to claim 3 is characterized by: Both ends of the connecting rod (6) abut against the inner wall of the connecting sleeve (4).

6. The drainage structure for an underground buried tunnel according to claim 5 is characterized by: The pull cable is connected to the middle portion of the connecting rod (6).

7. The drainage structure for an underpass tunnel according to claim 1 is characterized by: The detection ball (7) is a hollow structure, the connecting rod (6) is rotatably connected to the connecting sleeve (4), and the diameter of the detection ball (7) is larger than the diameter of the connecting port (2).

8. The drainage structure for an underpass tunnel according to claim 7 is characterized by: The detection ball (7) is made of memory metal.

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