Waterproof drainage structure of tunnel

Abstract

The tunnel waterproof drainage structure comprises a tunnel bottom and a waterproof plate, a water inlet hole is formed in the top of an inner cavity of the waterproof plate, the two sides of the bottom of the waterproof plate are communicated with filtering boxes, the bottoms of the filtering boxes are communicated with water collecting boxes, and the bottoms of the water collecting boxes are communicated with drainage grooves in the bottom of the tunnel. According to the device, water seeping from the top of the tunnel enters the filter tank through a water inlet hole and an arc-shaped cavity and is filtered through the filter assembly, a rotating cylinder drives a partition plate and a scraper to rotate through a rotating handle, the partition plate and the scraper are driven to rotate through a rotating handle, and the water collecting tank is driven to rotate; sediment on the first filter screen is scraped to the opening of the first filter screen and enters the treatment tank to be collected, and therefore the first filter screen is cleaned. Filtered water is collected through the water collecting cavity, and the water in the water collecting cavity can enter the drainage groove to be directly drained through the switching assembly and can also be drained through the fixing pipe to be directly utilized.

Description

Technical Field

[0001] This invention relates to the field of tunnel technology, specifically to a waterproof drainage structure for tunnels. Background Technology

[0002] Tunnels are engineering structures buried underground, representing a form of human utilization of underground space. Tunnels can be categorized into traffic tunnels, hydraulic tunnels, municipal tunnels, mining tunnels, and military tunnels.

[0003] The tunnel structure consists of two parts: the main building and the auxiliary equipment. The main building consists of the tunnel body and the portal, while the auxiliary equipment includes passing bays, fire-fighting facilities, emergency communication and drainage facilities. Longer tunnels also have specialized ventilation and lighting equipment.

[0004] Water accumulation is common in tunnels, especially during the construction phase. As the tunnel is not fully completed, water accumulation is more likely to occur, requiring timely drainage to avoid affecting the construction quality and safety. A common drainage system involves setting drainage channels on both sides of the tunnel bottom. However, water seeping from the tunnel top does not directly enter the drainage channels. Instead, it usually falls to the tunnel bottom and then flows along the tunnel bottom into the drainage channels, causing the tunnel bottom to become slippery.

[0005] Based on this, the present invention designs a waterproof drainage structure for tunnels to solve the above problems. Summary of the Invention

[0006] The purpose of this invention is to provide a waterproof drainage structure for tunnels to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a waterproof drainage structure for a tunnel, comprising a tunnel bottom, two vertical support plates symmetrically fixed on the top surface of the tunnel bottom, an arc-shaped waterproof plate fixed between the top ends of the support plates, two drainage channels symmetrically arranged at the tunnel bottom, a vertical collection pipe fixed on the top of the drainage channels, an arc-shaped cavity inside the waterproof plate, and multiple water inlet holes evenly arranged on the top surface of the arc-shaped cavity, water inlet pipes symmetrically fixed on both sides of the bottom surface of the waterproof plate, the top ends of the water inlet pipes communicating with the arc-shaped cavity, and inclined guide platforms provided between the two side walls and the bottom surface of the arc-shaped cavity, so that the water in the arc-shaped cavity can be concentrated at the end of the water inlet pipe, a filter box fixed at the bottom end of the water inlet pipe, a water outlet pipe fixedly connected to the bottom of the filter box, and a filter assembly fixed in the filter box;

[0008] A water collection tank is fixed at the bottom of the outlet pipe. The upper part of the water collection tank is equipped with a water collection cavity, and the lower part is equipped with a drive cavity. A switching component is installed in the drive cavity. The bottom of the water collection cavity is shaped like a bucket, and a pipe is installed at the center of the bottom surface. The pipe is connected to the switching component. A fixed pipe is fixed on the outer wall of the water collection tank, and a collection pipe is fixed on the bottom surface. The inner ends of the fixed pipe and the collection pipe are respectively connected to the switching component.

[0009] Preferably, the filter assembly includes a first filter screen fixed in the middle of the inner cavity of the filter box. The first filter screen has an opening on one side, and a treatment groove is provided below the opening. The opening is offset from the inlet pipe and the outlet pipe. A vertical partition is fixed in the middle of the upper part of the inner cavity of the filter box. The two sides of the partition are in contact with the side wall of the filter box, and a rotating component is connected to the top. A scraper is fixed on one side of the bottom of the partition, and the bottom end of the scraper is in contact with the top surface of the first filter screen.

[0010] Preferably, the rotating assembly includes a rotating cylinder rotatably connected to the top surface of the filter box cavity. The top surface of the rotating cylinder contacts the top surface of the filter box, and an opening is provided on one side of the top surface corresponding to the position of the water inlet pipe. The top end of the partition extends into the cavity of the rotating cylinder and is fixedly connected to the top surface of the cavity of the rotating cylinder. A bevel gear ring is fixed on the upper part of the outer side wall of the rotating cylinder. The bevel gear ring meshes with a drive bevel gear. The gear shaft of the drive bevel gear is rotatably connected to the side wall of the filter box, and one end extends out of the filter box and is fixed with a rotating handle. An annular boss is fixed on the outer side of the bottom end of the rotating cylinder. The outer side wall of the boss contacts the side wall of the filter box. The boss and the side wall of the rotating cylinder separate the motor and other structures from the cavity through which the water flows, thus playing a certain protective role.

[0011] Preferably, multiple spring grooves are evenly fixed along the circumferential direction on the upper part of the side wall of the filter box. A spring block is connected to the spring groove through a spring, and one end of the spring block extends out of the spring groove and contacts the side wall of the rotating cylinder. The spring blocks are pressed tightly against the side wall of the rotating cylinder by the spring, which acts as a positioning component to prevent the rotating cylinder from rotating randomly.

[0012] Preferably, the switching assembly includes a circular switching box that is fixedly connected to the bottom end of the pipe. The inner ends of the fixed pipe and the collecting pipe are fixedly connected to the two sides of the switching box, respectively. A circular rotating block is rotatably connected in the switching box. The rotating block has a channel, with the inner section of the channel being vertical and its top end corresponding to the pipe. The outer section is horizontal and its outer end is open. A rotating shaft is fixed at the center of the bottom surface of the rotating block. The bottom end of the rotating shaft extends out of the switching box and is rotatably connected to the bottom surface of the collecting tank. A first bevel gear is fixed on the rotating shaft. The first bevel gear meshes with a second bevel gear. The gear shaft of the second bevel gear is rotatably connected to the side wall of the collecting tank, and one end extends out of the collecting tank and is fixed with a handle.

[0013] Preferably, the bottom of the arc-shaped cavity on the waterproof plate is provided with a receiving groove in the middle, and a movable cylinder is slidably connected to the receiving groove through the side wall. An arc-shaped unblocking plate is fixed at the top of the movable cylinder. A vertical unblocking shaft is fixed on the top surface of the unblocking plate at the position corresponding to the water inlet hole. Springs are symmetrically fixed between the bottom surface and the bottom surface of the receiving groove. A cam is provided in the middle of the bottom surface of the conveying plate. The cam is connected to a motor. The motor is fixedly connected to the bottom surface of the receiving groove.

[0014] Preferably, a second filter screen is fixed to the upper part of the water collection chamber, and an opening is provided on the top surface of the water collection tank, with a cover plate at the opening. The water entering the water collection tank is filtered a second time through the second filter screen, and the opening facilitates cleaning of the second filter screen.

[0015] Preferably, a collection trough is symmetrically provided on the top surface of the bottom of the tunnel, a fixed net is fixed on the top of the collection trough, and one side of the bottom of the collection trough is connected and fixed to the upper part of the drainage trough on the corresponding side through a connecting pipe, so as to discharge the water in the tunnel.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. This invention uses a waterproof membrane to prevent water from falling directly into the tunnel from the top of the tunnel, thus providing a waterproof function. The seeping water enters the filter box through the water inlet and the arc-shaped cavity, and is filtered by the filter assembly to prevent mud and sand in the water from entering the drainage ditch.

[0018] 2. The present invention drives the bevel gear to rotate through the handle, and drives the partition and scraper to rotate through the bevel gear ring, thereby scraping the mud and sand on the first filter screen to the opening of the first filter screen and collecting it in the treatment tank, thereby cleaning the first filter screen and preventing the first filter screen from clogging.

[0019] 3. The present invention collects filtered water through a water collection chamber. The water in the water collection chamber can be directly discharged into the drainage tank by switching components. Alternatively, the water collection chamber and the fixed pipe can be connected by switching components so that the water can be discharged directly from the fixed pipe for use. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the internal structure of the waterproof membrane of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal structure of the filter box of the present invention;

[0024] Figure 4 This is a schematic diagram of the structure of the spring block of the present invention;

[0025] Figure 5 This is a schematic diagram of the internal structure of the water collection tank of the present invention;

[0026] Figure 6 This is a schematic diagram of the structure at the bottom of the tunnel according to the present invention.

[0027] The attached diagram lists the components represented by each number as follows:

[0028] 1-Tunnel bottom, 101-Drainage trough, 102-Collection pipe, 103-Collection trough, 104-Connecting pipe, 105-Fixing net;

[0029] 2-Waterproof board, 201-Support plate, 202-Water inlet hole, 203-Drainage shaft, 204-Drainage plate, 205-Receiving groove, 206-Moving cylinder, 207-Cam;

[0030] 3-Filter box, 301-Inlet pipe, 302-Outlet pipe, 303-First filter screen, 304-Rotating cylinder, 305-Baffle, 306-Scraper, 307-Conical tooth ring, 308-Spring block;

[0031] 4-Water collection tank, 401-Water collection chamber, 402-Drive chamber, 403-Switching box, 404-Fixed pipe, 405-Rotating block, 406-Rotating shaft, 407-First bevel gear, 408-Second filter screen. Detailed Implementation

[0032] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0033] Example 1

[0034] Please refer to the accompanying drawings. The present invention provides a technical solution: a waterproof drainage structure for a tunnel, including a tunnel bottom 1, two vertical support plates 201 symmetrically fixed on the top surface of the tunnel bottom 1, an arc-shaped waterproof plate 2 fixed between the top ends of the support plates 201, two drainage channels 101 symmetrically provided on the tunnel bottom 1, a vertical collection pipe 102 fixed on the top of the drainage channels 101, an arc-shaped cavity provided inside the waterproof plate 2, and a plurality of water inlet holes 202 evenly provided on the top surface of the arc-shaped cavity, water inlet pipes 301 symmetrically fixed on both sides of the bottom surface of the waterproof plate 2, the top end of the water inlet pipes 301 communicating with the arc-shaped cavity, and inclined guide platforms provided between the two side walls and the bottom surface of the arc-shaped cavity, so that the water in the arc-shaped cavity can be concentrated at the end of the water inlet pipes 301, a filter box 3 fixed at the bottom end of the water inlet pipes 301, a water outlet pipe 302 fixedly connected to the bottom of the filter box 3, and a filter assembly fixed in the filter box 3;

[0035] A water collection tank 4 is fixed to the bottom end of the water outlet pipe 302. The upper part of the water collection tank 4 is provided with a water collection cavity 401, and the lower part is provided with a drive cavity 402. A switching component is provided in the drive cavity 402. The bottom of the water collection cavity 401 is shaped like a bucket, and a pipe is provided at the center of the bottom surface. The pipe is connected to the switching component. A fixed pipe 404 is fixed on the outer wall of the water collection tank 4, and a collection pipe 102 is fixed on the bottom surface. The inner ends of the fixed pipe 404 and the collection pipe 102 are respectively connected to the switching component.

[0036] The filter assembly includes a first filter screen 303 fixed in the middle of the inner cavity of the filter box 3. The first filter screen 303 has an opening on one side and a treatment groove below the opening. The opening is offset from the water inlet pipe 301 and the water outlet pipe 302. A vertical partition 305 is fixed in the middle of the upper part of the inner cavity of the filter box 3. The two sides of the partition 305 are in contact with the side wall of the filter box 3, and a rotating component is connected to the top. A scraper 306 is fixed on one side of the bottom of the partition 305. The bottom end of the scraper 306 is in contact with the top surface of the first filter screen 303.

[0037] The rotating assembly includes a rotating cylinder 304 rotatably connected to the top surface of the inner cavity of the filter box 3. The top surface of the rotating cylinder 304 contacts the top surface of the filter box 3, and an opening is provided on one side of the top surface corresponding to the position of the water inlet pipe 301. The top end of the partition plate 305 extends into the inner cavity of the rotating cylinder 304 and is fixedly connected to the top surface of the inner cavity of the rotating cylinder 304. A bevel gear ring 307 is fixed on the upper part of the outer side wall of the rotating cylinder 304. The bevel gear ring 307 meshes with a drive bevel gear. The gear shaft of the drive bevel gear is rotatably connected to the side wall of the filter box 3, and one end extends out of the filter box 3 and is fixed with a handle. An annular boss is fixed on the outer side of the bottom end of the rotating cylinder 304. The outer side wall of the boss contacts the side wall of the filter box 3. The boss and the side wall of the rotating cylinder 304 separate the motor and other structures from the cavity through which the water flows, thus playing a certain protective role.

[0038] Multiple spring grooves are evenly fixed on the upper side wall of the filter box 3 along the circumferential direction. Spring blocks 308 are connected to the spring grooves by springs, and one end of the spring block 308 extends out of the spring groove and contacts the side wall of the rotating cylinder 304. The spring blocks 308 are pressed tightly against the side wall of the rotating cylinder 304 by the springs, which serves as a positioning component to prevent the rotating cylinder 304 from rotating randomly.

[0039] The switching assembly includes a circular switching box 403 fixedly connected to the bottom of the pipe. The inner ends of the fixed pipe 404 and the collecting pipe 102 are fixedly connected to the two sides of the switching box 403, respectively. A circular rotating block 405 is rotatably connected in the switching box 403. The rotating block 405 has a channel, with the inner section of the channel being vertical and the top end corresponding to the pipe. The outer section is horizontal and the outer end is open. A rotating shaft 406 is fixed at the center of the bottom surface of the rotating block 405. The bottom end of the rotating shaft 406 extends out of the switching box 403 and is rotatably connected to the bottom surface of the water collection tank 4. A first bevel gear 407 is fixed on the rotating shaft 406. The first bevel gear 407 meshes with a second bevel gear. The gear shaft of the second bevel gear is rotatably connected to the side wall of the water collection tank 4, and one end extends out of the water collection tank 4 and is fixed with a handle.

[0040] The working principle of this embodiment is as follows: Water seeping from the top of the tunnel enters the arc-shaped cavity through the water inlet hole 202 at the top of the waterproof plate 2, and enters the filter box 3 through the water inlet pipe 301. After being filtered by the first filter screen 303, it is discharged into the water collection tank 4 through the water outlet pipe 302 to prevent mud and sand in the water from entering the drainage trough 101.

[0041] When a large amount of mud and sand accumulates on the first filter screen 303, the drive bevel gear is rotated by the handle, and the rotating cylinder 304 drives the partition 305 and scraper 306 to rotate through the bevel gear ring 307, thereby scraping the mud and sand on the first filter screen 303 to the opening of the first filter screen 303, entering the processing tank for collection, and then taking out the processing tank for processing of the mud and sand in the processing tank.

[0042] When water is needed in the tunnel, the first bevel gear 407 is rotated by the handle, and the rotating shaft 406 is driven to rotate the rotating block 405 by the first bevel gear 407 and the second bevel gear, so that the horizontal section of the rotating block 405 is connected to the fixed pipe 404, thereby allowing the water in the water collection chamber 401 to be discharged through the fixed pipe 404 so that the water in the water collection chamber 401 can be recycled.

[0043] When it is necessary to drain the water from the water collection tank 4 into the drain trough 101, the first bevel gear 407 is rotated by the handle, and the rotating shaft 406 is driven to rotate the rotating block 405 through the first bevel gear 407 and the second bevel gear, so that the horizontal section of the rotating block 405 is connected to the collection pipe 102, thereby allowing the water in the water collection chamber 401 to be drawn into the drain trough 101 through the collection pipe 102, and then discharged outward through the drain trough 101.

[0044] Example 2

[0045] The structure of this embodiment is basically the same as that of embodiment one. The difference is that the bottom of the arc-shaped cavity on the waterproof plate 2 is provided with a receiving groove 205. A movable cylinder 206 is slidably connected in the receiving groove 205 through the side wall. An arc-shaped unblocking plate 204 is fixed at the top of the movable cylinder 206. A vertical unblocking shaft 203 is fixed on the top surface of the unblocking plate 204 corresponding to the position of the water inlet hole 202. Springs are symmetrically fixed between the bottom surface and the bottom surface of the receiving groove 205. A cam 207 is provided in the middle of the bottom surface of the conveying plate. The cam 207 is connected to a motor. The motor is fixedly connected to the bottom surface of the receiving groove 205.

[0046] When it is necessary to unclog the water inlet 201, start the motor of the cam 207, causing the cam 207 to lift the unclogging plate 204, so that the unclogging shaft 203 extends into the water inlet 202 to unclog the water inlet 202 and prevent it from becoming blocked.

[0047] Example 3

[0048] The structure of this embodiment is basically the same as that of embodiment one. The difference is that a second filter screen 408 is fixed on the upper part of the water collection chamber 401, and an opening is provided on the top surface of the water collection tank 4. The water entering the water collection tank 4 is filtered twice by the second filter screen 408. The opening facilitates the cleaning of the second filter screen 408.

[0049] A collection trough 103 is symmetrically provided on the top surface of the bottom 1 of the tunnel. A fixing net 105 is fixed on the top of the collection trough 103, and the bottom side of the collection trough 103 is connected and fixed to the upper part of the drainage trough 101 on the corresponding side through a connecting pipe 104, so as to discharge water in the tunnel.

[0050] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0051] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to specific implementations. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A waterproof drainage structure for a tunnel, comprising a tunnel bottom (1), two vertical support plates (201) symmetrically fixed to the top surface of the tunnel bottom (1), and an arc-shaped waterproof plate (2) fixed between the top ends of the support plates (201), characterized in that: The bottom (1) of the tunnel is symmetrically provided with two drainage channels (101). A vertical collection pipe (102) is fixed on the top of the drainage channel (101). The interior of the waterproof plate (2) is provided with an arc-shaped cavity, and multiple water inlet holes (202) are evenly provided on the top surface of the arc-shaped cavity. Water inlet pipes (301) are symmetrically fixed on both sides of the bottom surface of the waterproof plate (2). The top of the water inlet pipe (301) is connected to the arc-shaped cavity. A filter box (3) is fixed at the bottom of the water inlet pipe (301). A water outlet pipe (302) is fixed at the bottom of the filter box (3). A filter assembly is fixed in the filter box (3). The bottom end of the water outlet pipe (302) is fixed with a water collection tank (4). The upper part of the water collection tank (4) is provided with a water collection cavity (401) and the lower part is provided with a driving cavity (402). A switching component is provided in the driving cavity (402). The bottom of the water collection cavity (401) is shaped like a bucket, and a pipe is provided at the center of the bottom surface. The pipe is connected to the switching component. A fixed pipe (404) is fixed on the outer wall of the water collection tank (4), and a collection pipe (102) is fixed on the bottom surface. The inner ends of the fixed pipe (404) and the collection pipe (102) are respectively connected to the switching component.

2. The waterproof and drainage structure of the tunnel according to claim 1, characterized in that: The filter assembly includes a first filter screen (303) fixed in the middle of the inner cavity of the filter box (3). The first filter screen (303) has an opening on one side and a processing groove below the opening. The opening is offset from the inlet pipe (301) and the outlet pipe (302). A vertical partition (305) is fixed in the middle of the upper part of the inner cavity of the filter box (3). The two sides of the partition (305) are in contact with the side wall of the filter box (3), and a rotating assembly is connected to the top. A scraper (306) is fixed on one side of the bottom of the partition (305). The bottom end of the scraper (306) is in contact with the top surface of the first filter screen (303).

3. The waterproof and drainage structure of the tunnel according to claim 2, characterized in that: The rotating assembly includes a rotating cylinder (304) rotatably connected to the top surface of the inner cavity of the filter box (3). The top surface of the rotating cylinder (304) contacts the top surface of the filter box (3), and an opening is provided on one side of the top surface corresponding to the position of the water inlet pipe (301). The top end of the partition (305) extends into the inner cavity of the rotating cylinder (304) and is fixedly connected to the top surface of the inner cavity of the rotating cylinder (304). A bevel gear ring (307) is fixed on the upper part of the outer side wall of the rotating cylinder (304). The bevel gear ring (307) meshes with a driving bevel gear. The gear shaft of the driving bevel gear is rotatably connected to the side wall of the filter box (3), and one end extends out of the filter box (3) and is fixed with a rotating handle.

4. The waterproof and drainage structure of the tunnel according to claim 3, characterized in that: The filter box (3) has multiple spring grooves evenly fixed on the upper side wall along the circumferential direction. A spring block (308) is connected to the spring groove by a spring. One end of the spring block (308) extends out of the spring groove and contacts the side wall of the rotating cylinder (304).

5. The waterproof and drainage structure of the tunnel according to claim 1, characterized in that: The switching assembly includes a circular switching box (403) fixedly connected to the bottom end of the pipe. The inner ends of the fixed pipe (404) and the collecting pipe (102) are fixedly connected to the two sides of the switching box (403). A circular rotating block (405) is rotatably connected in the switching box (403). The rotating block (405) has a channel, and the inner section of the channel is vertical, with its top end corresponding to the pipe. The outer section is horizontal, and its outer end is open. A rotating shaft (406) is fixed at the center of the bottom surface of the rotating block (405). The bottom end of the rotating shaft (406) extends out of the switching box (403) and is rotatably connected to the bottom surface of the water collection tank (4). A first bevel gear (407) is fixed on the rotating shaft (406). The first bevel gear (407) meshes with a second bevel gear. The gear shaft of the second bevel gear is rotatably connected to the side wall of the water collection tank (4), and one end extends out of the water collection tank (4) and is fixed with a handle.

6. The waterproof and drainage structure of the tunnel according to claim 1, characterized in that: The bottom of the arc-shaped cavity of the waterproof plate (2) is provided with a receiving groove (205). A movable cylinder (206) is slidably connected in the receiving groove (205) through the side wall. An arc-shaped unblocking plate (204) is fixed at the top of the movable cylinder (206). A vertical unblocking shaft (203) is fixed on the top surface of the unblocking plate (204) corresponding to the position of the water inlet hole (202). Springs are symmetrically fixed between the bottom surface and the bottom surface of the receiving groove (205). A cam (207) is provided in the middle of the bottom surface of the conveying plate. A motor is connected to the cam (207). The motor is fixedly connected to the bottom surface of the receiving groove (205).

7. The waterproof and drainage structure of the tunnel according to any one of claims 1 to 6, characterized in that: The upper part of the water collection chamber (401) is fixed with a second filter screen (408), and the top surface of the water collection tank (4) is provided with an opening and a cover plate.

8. The waterproof and drainage structure of the tunnel according to any one of claims 1 to 6, characterized in that: The bottom (1) of the tunnel is symmetrically provided with a collection trough (103) on the top surface. A fixing net (105) is fixed on the top of the collection trough (103), and the bottom side of the collection trough (103) is connected and fixed to the upper part of the drainage trough (101) on the corresponding side through a connecting pipe (104).

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