Drainage box culvert and rapid construction method

Abstract

The present application relates to a drainage box culvert and a rapid construction method, including a box culvert body, the box culvert body having a flow chamber, a sedimentation chamber provided on the bottom wall of the flow chamber, a scraper slidably connected to the inner wall of the flow chamber, the bottom of the scraper pressed against the bottom wall of the flow chamber, and a recovery member connected to the scraper to achieve the reset of the scraper. The provision of the scraper and the recovery member in the present application eliminates the need for staff to clean the bottom wall of the flow chamber along the length direction of the flow chamber, reduces the dredging workload of the staff, improves the cleaning efficiency of the staff, and thus reduces the cost of using the drainage box culvert; the provision of the recovery screw and the recovery coil spring enables the automatic reset of the scraper, eliminates the need for an external power device to drive the scraper to reset, thereby reducing energy loss and embodying the concept of energy saving; the provision of the elastic member and the opening and closing plate enables the closure of the opening and closing chamber, making it difficult for water to flow back through the opening and closing chamber to the flow chamber of the adjacent box culvert body, thereby ensuring the stability of the water discharge in the flow chamber.

Description

Technical Field

[0001] The present application relates to the field of drainage systems, and in particular to a drainage box culvert and a rapid construction method. Background Art

[0002] A drainage box culvert refers to a culvert whose body is constructed with reinforced concrete box-shaped pipe sections. Drainage box culverts can cope with uneven settlement of the foundation and are often used as drainage structures in road projects.

[0003] The bottom surface of the drainage culvert cavity is flat. When the water flow in the drainage culvert cavity is small, the water flows in the entire bottom surface of the drainage culvert cavity, and the silt carried by the water flow is deposited on the bottom surface of the drainage culvert cavity in a naturally scattered state. When the water flow in the drainage culvert cavity is large, it is difficult for the water flow to wash away the silt deposited on the bottom surface of the drainage culvert cavity, resulting in more and more silt on the bottom surface of the drainage culvert cavity. The silt accumulated on the bottom surface of the drainage culvert cavity resists the water flow speed in the drainage culvert cavity, so the staff needs to clean the silt accumulated on the bottom surface of the drainage culvert cavity.

[0004] Silt accumulates on the bottom surface of the drainage box culvert cavity, requiring staff to clean the bottom surface of the drainage box culvert cavity along the length direction of the drainage box culvert, which increases the staff's silt removal workload and reduces the staff's cleaning efficiency, thereby increasing the use cost of the drainage box culvert. Summary of the Invention

[0005] In order to improve the cleaning efficiency of the bottom surface of the drainage box culvert cavity by the staff, the present application provides a drainage box culvert and a rapid construction method.

[0006] In the first aspect, the present application provides a drainage box culvert, which adopts the following technical solution:

[0007] A drainage culvert includes a culvert body, the culvert body having a flow cavity for water to flow through, a sedimentation cavity for sludge to accumulate on the bottom wall of the flow cavity, a scraper slidably connected to the inner wall of the flow cavity, the water in the flow cavity drives the scraper to slide toward the sedimentation cavity, the bottom of the scraper presses against the bottom wall of the flow cavity, driving the sludge on the bottom wall of the flow cavity into the sedimentation cavity, and a recovery part is connected to the scraper, which is used to drive the scraper to slide in the direction away from the sedimentation cavity, thereby realizing the reset of the scraper.

[0008] By adopting the above technical solution, when the drainage culvert is in use, the water in the flow chamber hits the end face of the scraper, and the water pressure drives the scraper to slide in the direction close to the sedimentation chamber. The bottom of the scraper presses against the bottom wall of the flow chamber, and the scraper drives the silt deposited on the bottom wall of the flow chamber into the sedimentation chamber, thereby collecting the silt on the bottom wall of the flow chamber. There is no need for staff to clean the bottom wall of the flow chamber along the length direction of the flow chamber, which reduces the dredging workload of the staff and improves the cleaning efficiency of the staff, thereby reducing the use cost of the drainage culvert; when the water in the flow chamber is drained, the recovery part drives the scraper to slide in the direction away from the sedimentation chamber, thereby realizing automatic resetting of the scraper, and the scraper repeatedly scrapes and cleans the bottom wall of the flow chamber, so that silt is not easily accumulated on the bottom wall of the flow chamber, and the bottom wall of the flow chamber remains clean, thereby ensuring the stability of water flow transportation in the flow chamber.

[0009] Optionally, a recovery cavity for accommodating a recovery member is provided on the inner wall of the flow cavity, and the recovery member includes a recovery screw and a recovery coil spring. The recovery screw is rotatably connected to the inner wall of the recovery cavity, and the axis of the recovery screw is parallel to the sliding direction of the scraper. The two ends of the recovery coil spring in the elastic force direction are connected one-to-one to the outer wall of the recovery screw and the inner wall of the recovery cavity, and the scraper is threadedly connected to the outer wall of the recovery screw.

[0010] By adopting the above technical solution, when the water in the flow chamber hits the end face of the scraper and drives the scraper to slide along the axis of the recovery screw rod toward the deposition chamber, the recovery screw rod is driven to rotate along its own axis and connected to the inner wall of the flow chamber. The bottom of the scraper is pressed against the bottom wall of the flow chamber, driving the silt accumulated on the bottom wall of the flow chamber into the deposition chamber, thereby realizing the collection of the silt deposited on the bottom wall of the flow chamber. There is no need for the staff to clean the silt deposited on the bottom wall of the flow chamber along the length direction of the flow chamber, thereby reducing the workload of the staff and improving the work efficiency of the staff; when the water in the flow chamber is drained, the water pressure on the scraper disappears, and the elastic force of the recovery coil spring drives the recovery screw rod to rotate, driving the scraper to slide along the axis of the recovery screw rod toward away from the deposition chamber, thereby realizing automatic reset of the scraper, and no external power equipment is required to drive the scraper to reset, thereby reducing energy loss and embodying the concept of energy saving.

[0011] Optionally, the circumferential outer wall of the scraper is pressed against the inner wall of the flow cavity to form a seal, an opening and closing cavity for water to flow through is opened on the scraper, an opening and closing assembly is connected to the scraper, the opening and closing assembly includes an elastic member and an opening and closing plate, the opening and closing plate is rotatably connected to the inner wall of the opening and closing cavity, the two ends of the elastic member in the elastic force direction are connected one-to-one to the inner wall of the opening and closing cavity and the outer wall of the opening and closing plate, the elastic member has the elastic force to drive the opening and closing plate to rotate in the direction close to the opening and closing cavity, and the opening and closing plate covers the opening and closing cavity to form a seal.

[0012] By adopting the above technical solution, the circumferential outer wall of the scraper is pressed against the inner wall of the flow chamber to form a seal, and the elastic force of the elastic member drives the opening and closing plate to cover the opening and closing chamber to form a seal. When the water in the flow chamber hits the end face of the scraper, the water pressure in the flow chamber continues to increase, driving the scraper to slide along the axis of the recovery screw rod toward the direction close to the deposition chamber, thereby ensuring the stability of the scraper sliding along the axis of the recovery screw rod, and the scraper drives the silt on the bottom wall of the flow chamber into the deposition chamber. The water pressure in the flow chamber drives the opening and closing plate to rotate in the direction away from the opening and closing chamber, and the sealing effect of the opening and closing plate on the opening and closing chamber disappears, thereby ensuring that the water in the flow chamber is stably discharged through the opening and closing chamber; when the water in the flow chamber flows back, the elastic force of the elastic member drives the opening and closing plate to cover the opening and closing chamber, thereby realizing the closure of the opening and closing chamber, making it difficult for water to flow back through the opening and closing chamber to the flow chamber of the adjacent box culvert body, thereby ensuring the stability of water discharge in the flow chamber.

[0013] Optionally, a filter plate is connected to the inner wall of the opening and closing chamber, and the filter plate is used to filter silt in the water.

[0014] By adopting the above technical solution, the filter plate is used to filter the silt in the water, making it difficult for the water to carry the silt into the flow cavity of the adjacent box culvert body, thereby realizing the collection of the silt in the water.

[0015] Optionally, the end face of the filter plate has a plurality of filter holes, and the end face of the opening and closing plate facing the filter plate is connected to a plurality of elastic blocks, the elastic blocks correspond to the filter holes one by one, the elastic blocks are embedded in the filter holes, and drive the sludge in the filter holes to be discharged.

[0016] By adopting the above technical solution, when the water in the flow cavity is drained, the pressure of the water on the opening and closing plate disappears, and the elastic force of the elastic member drives the opening and closing plate to rotate toward the opening and closing cavity. The opening and closing plate covers the opening and closing cavity to form a seal. The elastic block corresponds to the filter hole one by one, and the outer wall of the elastic block presses against the inner wall of the filter hole, driving the silt on the inner wall of the filter hole to be discharged, thereby realizing automatic cleaning of the filter hole and ensuring the stability of the filter plate in filtration of water.

[0017] Optionally, a scraper plate is slidably connected to the end surface of the filter plate away from the opening and closing plate, and the bottom wall of the scraper plate is pressed against the end surface of the filter plate to drive the sludge away from the end surface of the filter plate.

[0018] By adopting the above technical solution, the scraper plate is slidably connected to the end face of the filter plate, the bottom of the scraper plate is pressed against the end face of the filter plate, and drives the silt accumulated on the end face of the filter plate to separate, so that the silt is not easy to clog the filter holes, thereby ensuring the stability of the filter plate in filtering the silt in the water.

[0019] Optionally, the end surface of the scraper plate is connected to a slider, and the end surface of the scraper plate is provided with a sliding groove for the slider to slide.

[0020] By adopting the above technical solution, the slider is slidably connected to the inner wall of the slide groove, driving the scraper plate to slide and connect to the end face of the scraper, so that the scraper plate is not easily offset on the end face of the scraper, thereby ensuring the stability of the scraper plate sliding on the end face of the scraper.

[0021] Optionally, the end surface of the scraping plate is connected to a float, and when the liquid level in the flow chamber rises, the float floats up due to the buoyancy, driving the scraping plate to slide and connect to the end surface of the filter plate.

[0022] By adopting the above technical solution, when the liquid level in the flow chamber rises, the float floats up due to the buoyancy of the water in the flow chamber, and the float is connected to the end face of the scraper plate, thereby driving the scraper plate to slide and connect to the end face of the filter plate, thereby realizing automatic cleaning of the scraper plate on the end face of the filter plate, without the need for external power equipment to drive the scraper plate to slide, reducing energy loss and embodying the concept of energy saving.

[0023] Optionally, a starting assembly is connected to the scraper, and the starting assembly includes a closing plate, a starting plate and a transmission member. The starting plate is slidably connected to the end face of the scraper close to the filter plate, and the end face of the starting plate protruding from the end face of the scraper is used to abut the float. The closing plate is slidably connected to the end face of the scraper away from the starting plate, and the end face of the closing plate abuts the end face of the opening and closing plate away from the scraper and limits the rotation of the opening and closing plate. The transmission member is used to receive the power of the starting plate and drive the closing plate to slide in the direction away from the opening and closing plate. The end face of the closing plate is separated from the end face of the opening and closing plate, and the limiting effect of the opening and closing plate disappears.

[0024] By adopting the above technical solution, when the liquid level in the flow chamber continues to rise, the float slides toward the starting plate due to the buoyancy of the water, the outer wall of the float abuts the end face of the starting plate, and drives the starting plate to slide in the direction away from the filter plate, the transmission member receives the power of the starting plate and drives the closing plate to slide in the direction away from the opening and closing plate, the limiting effect of the closing plate on the opening and closing plate disappears, the water in the flow chamber drives the opening and closing plate to rotate in the direction away from the opening and closing chamber, the sealing effect of the opening and closing plate on the opening and closing chamber disappears, and the water in the flow chamber is stably discharged through the opening and closing chamber.

[0025] Secondly, the present application provides a rapid construction method for a drainage box culvert, which adopts the following technical solution:

[0026] A rapid construction method for a drainage box culvert comprises the following steps:

[0027] Excavation of foundation pit to form a foundation pit for embedding water supply and drainage box culvert;

[0028] Pour the cushion layer on the bottom wall of the foundation pit;

[0029] Hoist the drainage box culvert into the foundation pit;

[0030] The connections between adjacent drainage box culverts shall be sealed;

[0031] Backfill is carried out on both sides of the drainage box culvert.

[0032] By adopting the above technical solution, the staff can implement each step in an orderly manner to realize the modular installation of the drainage box culvert, so that the staff can operate in a targeted manner, improve the installation efficiency of the drainage box culvert, and thus reduce the use cost of the drainage box culvert.

[0033] In summary, this application includes at least one of the following beneficial technical effects:

[0034] 1. The setting of scrapers and recovery parts eliminates the need for workers to clean the bottom wall of the flow chamber along the length of the flow chamber, reducing the desilting workload of workers and improving their cleaning efficiency, thereby reducing the cost of using the drainage box culvert;

[0035] 2. The setting of the recovery screw and the recovery coil spring realizes the automatic reset of the scraper. No external power equipment is required to drive the scraper to reset, thereby reducing energy loss and embodying the concept of energy saving;

[0036] 3. The setting of the elastic member and the opening and closing plate realizes the closure of the opening and closing cavity, making it difficult for water to flow back through the opening and closing cavity to the flow cavity of the adjacent box culvert body, thereby ensuring the stability of water discharge in the flow cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0038] Figure 2 It is a partial cross-sectional view of an embodiment of the present application, mainly showing the scraper.

[0039] Figure 3 It is a schematic diagram of the overall structure of the scraper and the recovery member in the embodiment of the present application.

[0040] Figure 4 It is a partial cross-sectional view of an embodiment of the present application, mainly showing the starting component.

[0041] Figure 5 It is a cross-sectional view of the scraper in the embodiment of the present application.

[0042] Explanation of the accompanying symbols: 1. culvert body; 11. flow chamber; 12. sedimentation chamber; 13. recovery chamber; 2. scraper; 21. threaded section; 22. filter section; 221. opening and closing chamber; 222. slide groove; 223. transmission chamber; 224. sliding groove; 23. scraping section; 231. guide surface; 3. recovery member; 31. recovery screw rod; 32. recovery coil spring; 4. opening and closing assembly; 41. opening and closing plate; 42. elastic member; 5. filter plate; 51. filter hole; 6. elastic block; 7. scraper plate; 8. slider; 9. float; 10. starting assembly; 101. closing plate; 102. starting plate; 103. transmission member; 1031. transmission gear; 1032. transmission rack 1; 1033. transmission rack 2; 1034. elastic member; 14. sliding block. DETAILED DESCRIPTION

[0043] The following is combined with Figure 1-5 This application is described in further detail.

[0044] The embodiment of the present application discloses a drainage box culvert. Figure 1 The drainage culvert includes a culvert body 1, which is a square frame. The culvert body 1 has a flow chamber 11 for water to flow through. The flow chamber 11 is a strip-shaped chamber, and its length is parallel to that of the culvert body 1. The flow chamber 11 extends through the outer walls of the culvert body 1 on both sides of the length. Sedimentation chambers 12 are provided on the bottom walls of the flow chamber 11 on both sides of the length. The sedimentation chambers 12 are used to accumulate silt. When water flows into the flow chamber 11, the bottom wall of the sedimentation chamber 12 is lower than the bottom wall of the flow chamber 11. Heavy materials carried by the water enter the sedimentation chamber 12 under its own gravity, achieving preliminary screening of the silt carried by the water, thereby reducing the difficulty of cleaning the silt on the bottom wall of the flow chamber 11.

[0045] Reference Figure 2 A scraper 2 is slidably connected to the inner wall of the flow chamber 11. The sliding direction of the scraper 2 is parallel to the length direction of the flow chamber 11. The bottom of the scraper 2 is pressed against the bottom wall of the flow chamber 11 and drives the silt on the bottom wall of the flow chamber 11 into the sedimentation chamber 12, thereby cleaning the silt accumulated on the bottom wall of the flow chamber 11.

[0046] Reference Figure 2 and Figure 3, a recovery member 3 is connected to the scraper 2, and the recovery member 3 is used to drive the scraper 2 to reset. In the embodiment of the present application, a recovery chamber 13 is provided on the inner wall of the flow chamber 11, and the recovery chamber 13 is used to accommodate the recovery member 3. The recovery chamber 13 is located on the side of the flow chamber 11 away from the deposition chamber 12. The recovery chamber 13 is a strip-shaped chamber. The length direction of the recovery chamber 13 is parallel to the length direction of the flow chamber 11. The recovery member 3 includes a recovery screw 31 and a recovery coil spring 32. The recovery screw 31 is connected to the inner wall of the recovery chamber 13 along its own axis. The axis of the recovery screw 31 is parallel to the length direction of the recovery chamber 13. The two ends of the recovery coil spring 32 in the elastic direction are fixed one by one on the inner wall of the recovery chamber 13 and the outer wall of the recovery screw 31. The recovery coil spring 32 has a tendency to drive the recovery screw 31 to rotate by elastic force. The scraper 2 is threadedly connected to the outer wall of the recovery screw 31.

[0047] Reference Figure 2 When the water pressure in the flow chamber 11 drives the scraper 2 to slide along the axis of the restoration screw 31 toward one of the deposition chambers 12, the bottom of the scraper 2 presses against the bottom wall of the flow chamber 11, driving the silt accumulated on the bottom wall of the flow chamber 11 into the deposition chamber 12, thereby realizing automatic cleaning of the bottom wall of the flow chamber 11; when the water in the flow chamber 11 is drained, the elastic force of the restoration coil spring 32 drives the restoration screw 31 to rotate, driving the scraper 2 to slide along the axis of the restoration screw 31 toward the other deposition chamber 12, thereby realizing automatic resetting of the scraper 2, and no external power equipment is required to drive the scraper 2 to slide, thereby reducing energy loss and embodying the concept of energy saving.

[0048] As another solution, the recovery part 3 includes a recovery cylinder, which is fixed to the inner wall of the flow chamber 11 by screws. The axis of the recovery cylinder piston rod is parallel to the length direction of the flow chamber 11. The end of the recovery cylinder piston rod is fixed to the end face of the scraper 2. The recovery cylinder drives the scraper 2 to slide and connect to the inner wall of the flow chamber 11, driving the sludge accumulated on the bottom wall of the flow chamber 11 into the deposition chamber 12, thereby cleaning the sludge on the bottom wall of the flow chamber 11. There is no need for staff to clean the bottom wall of the flow chamber 11 along the length direction of the flow chamber 11, thereby reducing the workload of staff and improving their work efficiency.

[0049] Reference Figure 2 and Figure 3The outer circumferential wall of the scraper 2 abuts against the inner wall of the flow chamber 11 to form a seal. The scraper 2 includes a threaded section 21, a filtering section 22, and a scraping section 23. The ends of the threaded section 21, filtering section 22, and scraping section 23 are fixed in sequence. The threaded section 21 is threadedly connected to the outer wall of the recovery screw 31. The end surface of the scraping section 23 away from the filtering section 22 abuts against the bottom wall of the flow chamber 11. The end surface of the scraping section 23 facing the sedimentation chamber 12 is provided with a guide surface 231. The inclined height of the guide surface 231 decreases as the distance from the filtering section 22 decreases. The guide surface 231 is used to abut against the sludge on the bottom wall of the flow chamber 11 and guide the sludge into the sedimentation chamber 12, thereby cleaning the sludge on the bottom wall of the flow chamber 11.

[0050] Reference Figure 2 and Figure 4 The filter section 22 has two opening and closing cavities 221 on its end face facing one of the sedimentation chambers 12, and the opening and closing cavities 221 pass through the end face of the filter section 22 in the direction close to the other sedimentation chamber 12. Two opening and closing components 4 are connected to the scraper 2, and the opening and closing components 4 correspond to the opening and closing cavities 221 one by one. The opening and closing components 4 are used to control the opening and closing of the opening and closing cavities 221. The opening and closing component 4 includes an elastic member 42 and an opening and closing plate 41. The opening and closing plate 41 is rotatably connected to the inner wall of the opening and closing cavity 221. The rotation axis of the opening and closing plate 41 is parallel to the height direction of the culvert body 1. The elastic member 42 can be a tension spring or a torsion spring. In the embodiment of the present application, the elastic member 42 is a torsion spring with a certain deformation ability. The two ends of the elastic part 42 in the elastic direction are fixed one by one on the outer wall of the opening and closing plate 41 and the inner wall of the opening and closing cavity 221. The elastic part 42 has the elastic force to drive the opening and closing plate 41 to rotate toward the direction close to the opening and closing cavity 221, and the opening and closing plate 41 covers the opening and closing cavity 221 to form a seal.

[0051] Reference Figure 5 A filter plate 5 is fixed to the inner wall of the opening of the opening and closing cavity 221, away from the opening and closing plate 41. The outer circumferential wall of the filter plate 5 is welded to the inner wall of the opening of the opening and closing cavity 221 to secure it. The end surface of the filter plate 5 is formed with multiple filter holes 51 at even intervals. The end surface of the opening and closing plate 41 facing the filter plate 5 is fixed with multiple elastic blocks 6 at even intervals, one for each elastic block 6 and one for each filter hole 51. In this embodiment of the present application, the elastic blocks 6 are made of rubber, which has a certain degree of deformability.

[0052] Reference Figure 5 When the opening and closing plate 41 covers the opening and closing cavity 221 to form a seal, the elastic block 6 corresponds to the filter hole 51 one by one, and the elastic block 6 is embedded in the filter hole 51. The circumferential outer wall of the elastic block 6 abuts against the inner wall of the filter hole 51, and drives the silt adhered to the inner wall of the filter hole 51 to separate, thereby achieving preliminary cleaning of the filter plate 5.

[0053] Reference Figure 5The end face of the filter plate 5 facing away from the opening and closing plate 41 is slidably connected to a scraper plate 7, and the sliding direction of the scraper plate 7 is parallel to the rotation axis of the opening and closing plate 41. The bottom surface of the scraper plate 7 is pressed against the end face of the filter plate 5 and drives the sludge away from the end face of the filter plate 5. The scraper plate 7 is a strip-shaped plate, and the length direction of the scraper plate 7 is parallel to the width direction of the box culvert body 1. Sliders 8 are fixed to both ends of the scraper plate 7 facing the filter section 22 in the length direction. The end face of the filter section 22 facing the slider 8 is provided with a chute 222, and the chute 222 is used for the slider 8 to be inserted. The chute 222 is a strip-shaped groove, and the length direction of the chute 222 is parallel to the sliding direction of the scraper plate 7. Floats 9 are fixed to both ends of the scraper plate 7 in the length direction. In the embodiment of the present application, the material of the float 9 is polyvinyl chloride.

[0054] Reference Figure 2 When the liquid level in the flow chamber 11 rises, the float 9 floats up due to the buoyancy of the water in the flow chamber 11, and the float 9 drives the scraper plate 7 to slide and connect to the end face of the filter plate 5. The bottom wall of the scraper plate 7 presses against the end face of the filter plate 5 and scrapes away the silt on the end face of the filter plate 5, thereby cleaning the silt on the end face of the filter plate 5 again, making it less likely for the filter plate 5 to be blocked by the silt, thereby ensuring the stability of the filter plate 5 in filtering water.

[0055] Reference Figure 3 and Figure 4 The scraper 2 is connected to a starting assembly 10, which is used to control the rotation of the opening and closing plate 41. The starting assembly 10 includes a closing plate 101, two starting plates 102, and two transmission members 103. The closing plate 101 is slidably connected to the end face of the filter section 22 close to the opening and closing plate 41. The sliding direction of the closing plate 101 and the sliding direction of the float 9 are parallel to each other. The closing plate 101 is a strip-shaped plate, and the length direction of the closing plate 101 and the length direction of the scraper 7 are parallel to each other. The closing plate 101 is located on the side of the filter section 22 close to the threaded section 21, and the end face of the closing plate 101 is used to press against the outer wall of the opening and closing plate 41 to form a limit.

[0056] Reference Figure 3 and Figure 4 The end surface of the filter section 22 facing away from the closing plate 101 is provided with two transmission cavities 223. The two transmission cavities 223 are located at both ends of the filter section 22 in the width direction, and the transmission cavities 223 extend through the outer wall of the filter section 22 toward the closing plate 101. The two ends of the closing plate 101 in the length direction correspond to the two transmission cavities 223. The starting plate 102 corresponds to the transmission cavities 223 in a one-to-one manner. The starting plate 102 is slidably connected to the inner wall of the transmission cavity 223. The sliding direction of the starting plate 102 is parallel to the sliding direction of the closing plate 101. The end of the starting plate 102 protrudes from the end surface of the filter section 22, and the end surface of the starting plate 102 protruding from the filter section 22 is used to abut the end surface of the float 9.

[0057] Reference Figure 4The transmission member 103 corresponds to the transmission cavity 223 one by one. The transmission member 103 includes a transmission gear 1031, an elastic member 1034, a transmission rack 1032 and a transmission rack 2 1033. The end of the transmission rack 1032 is fixed to the end of the starting plate 102 located in the transmission cavity 223. The length direction of the transmission rack 1032 and the length direction of the starting plate 102 are perpendicular to each other, and the sliding direction of the transmission rack 1032 and the sliding direction of the starting plate 102 are parallel to each other. The end of transmission rack 2 1033 is fixed to the end of the closing plate 101 facing the transmission cavity 223, the length direction of transmission rack 2 1033 and the length direction of the closing plate 101 are perpendicular to each other, and the transmission gear 1031 is rotatably connected to the inner wall of the transmission cavity 223. Transmission rack 1 1032 and transmission rack 2 1033 are both engaged with transmission gear 1031, and transmission rack 1 1032 and transmission rack 2 1033 are located on the same side of the transmission gear 1031.

[0058] Reference Figure 3 and Figure 4 The elastic member 1034 can be a compression spring or a torsion spring. In the embodiment of the present application, the elastic member 1034 is a compression spring with a certain degree of deformation capability. The two ends of the elastic member 1034 in the direction of elastic force are fixed to the inner wall of the transmission cavity 223 and the end of the transmission rack 1032 in a one-to-one correspondence. The elastic force direction of the elastic member 1034 is parallel to the sliding direction of the transmission rack 1032. The elastic member 1034 has a tendency to drive the transmission rack 1032 to slide toward the filter plate 5.

[0059] Reference Figure 2 and Figure 4 When the liquid level in the flow chamber 11 rises, the float 9 moves vertically upward under the buoyancy of the water, driving the scraper plate 7 to slide and connect to the end face of the filter plate 5. The bottom wall of the scraper plate 7 presses against the end face of the filter plate 5 and scrapes the silt on the end face of the filter plate 5. The end face of the float 9 presses against the end face of the starting plate 102 and drives the starting plate 102 to slide in the direction away from the filter section 22. The transmission gear 1031 rotates, driving the transmission rack 2 1033 to slide in the direction away from the filter section 22, driving the closing plate 101 to slide in the direction away from the opening and closing plate 41, and the sealing effect of the closing plate 101 on the opening and closing plate 41 disappears. The water pressure in the flow chamber 11 drives the closing plate 101 to rotate in the direction away from the opening and closing chamber 221, and the sealing effect of the closing plate 101 on the opening and closing chamber 221 disappears. The water in the flow chamber 11 is discharged through the opening and closing chamber 221, thereby realizing stable drainage of the culvert body 1.

[0060] Reference Figure 4 A sliding block 14 is fixed to the end face of the closing plate 101 facing the filter section 22, and a sliding groove 224 for the sliding block 14 to slide is opened on the end face of the filter section 22 facing the sliding block 14. The sliding groove 224 is a strip groove, and the length direction of the sliding groove 224 is parallel to the sliding direction of the closing plate 101.

[0061] The implementation principle of a drainage culvert in an embodiment of the present application is as follows: when the drainage culvert is in use, water enters the flow chamber 11, and the water pressure drives the scraper 2 to slide toward one of the sedimentation chambers 12. The guide surface 231 abuts against the silt accumulated in the flow chamber 11 and guides the silt into the sedimentation chamber 12, thereby cleaning the silt accumulated on the bottom wall of the flow chamber 11. The staff only needs to clean the silt accumulated in the sedimentation chamber 12, and there is no need for the staff to clean the bottom wall of the flow chamber 11 along the length direction of the flow chamber 11, thereby reducing the staff's dredging workload and improving the staff's cleaning efficiency, thereby reducing the use cost of the drainage culvert.

[0062] At the same time, the outer circumferential wall of the scraper 2 is pressed against the inner wall of the flow chamber 11 to form a seal, the liquid level in the flow chamber 11 continues to rise, and the float 9 slides toward the direction close to the starting plate 102 under the buoyancy of the water in the flow chamber 11. The bottom wall of the scraper plate 7 is pressed against the end face of the filter plate 5 and scrapes off the silt on the end face of the filter plate 5, thereby realizing automatic cleaning of the end face of the filter plate 5; at the same time, the end face of the float 9 is pressed against the end face of the starting plate 102, and drives the starting plate 102 to slide in the direction away from the filter section 22, and the transmission gear 1031 rotates, driving the transmission rack 2 1033 slides in the direction away from the filter section 22, driving the closing plate 101 to slide in the direction away from the opening and closing plate 41. The end face of the closing plate 101 separates from the opening and closing plate 41, causing the closing effect of the opening and closing plate 41 to disappear. The opening and closing plate 41 rotates in the direction away from the opening and closing cavity 221 under the water pressure in the flow cavity 11, and the closing effect of the opening and closing plate 41 on the opening and closing cavity 221 disappears. The water in the flow cavity 11 is filtered through the filter hole 51 and then discharged through the opening and closing cavity 221, thereby ensuring the stability of drainage of the culvert body 1.

[0063] The present application also discloses a method for rapid construction of a drainage box culvert, comprising the following steps:

[0064] Excavation of foundation pit, digging of foundation pit for placing water supply and drainage box culvert, slope treatment and drainage measures for foundation pit during excavation;

[0065] The cushion layer is poured on the bottom wall of the foundation pit. The cushion layer is a reinforced concrete structure. Before pouring the cushion layer, the bottom wall of the foundation pit is leveled and the debris on the bottom wall of the foundation pit is cleaned to ensure the flatness of the bottom wall of the foundation pit;

[0066] Drainage box culvert hoisting: the drainage box culvert is hoisted into the foundation pit by a crane;

[0067] Sealing treatment: the connection between adjacent drainage box culverts shall be sealed;

[0068] Backfill treatment: backfill on both sides of the drainage box culvert.

[0069] The implementation principle of a rapid construction method for a drainage box culvert in an embodiment of the present application is: the staff implements each step in an orderly manner to realize the modular installation of the drainage box culvert, so that the staff can operate in a targeted manner, improve the installation efficiency of the drainage box culvert, and thus reduce the use cost of the drainage box culvert.

[0070] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A drainage box culvert, characterized by: The invention comprises a box culvert body (1), wherein the box culvert body (1) has a flow cavity (11) for water to flow through, a sedimentation cavity (12) for sludge to accumulate on the bottom wall of the flow cavity (11), a scraper (2) is slidably connected to the inner wall of the flow cavity (11), the water in the flow cavity (11) drives the scraper (2) to slide in a direction close to the sedimentation cavity (12), the bottom of the scraper (2) presses against the bottom wall of the flow cavity (11), driving the sludge on the bottom wall of the flow cavity (11) to enter the sedimentation cavity (12), and a recovery member (3) is connected to the scraper (2), and the recovery member (3) is used to drive the scraper (2) to slide in a direction away from the sedimentation cavity (12), thereby realizing the reset of the scraper (2); The circumferential outer wall of the scraper (2) is pressed against the inner wall of the flow cavity (11) to form a seal. The scraper (2) is provided with an opening and closing cavity (221) through which water flows. The scraper (2) is connected to an opening and closing assembly (4). The opening and closing assembly (4) comprises an elastic member (42) and an opening and closing plate (41). The opening and closing plate (41) is rotatably connected to the inner wall of the opening and closing cavity (221). The two ends of the elastic force direction of the elastic member (42) are connected to the inner wall of the opening and closing cavity (221) and the outer wall of the opening and closing plate (41) in a one-to-one correspondence. The elastic member (42) has an elastic force that drives the opening and closing plate (41) to rotate in a direction close to the opening and closing cavity (221), and the opening and closing plate (41) covers the opening and closing cavity (221) to form a seal.

2. A drainage box culvert according to claim 1, characterized in that: The inner wall of the flow cavity (11) is provided with a recovery cavity (13) for accommodating a recovery member (3). The recovery member (3) includes a recovery screw (31) and a recovery coil spring (32). The recovery screw (31) is rotatably connected to the inner wall of the recovery cavity (13). The axis of the recovery screw (31) is parallel to the sliding direction of the scraper (2). The two ends of the elastic force direction of the recovery coil spring (32) are connected to the outer wall of the recovery screw (31) and the inner wall of the recovery cavity (13) in a one-to-one correspondence. The scraper (2) is threadedly connected to the outer wall of the recovery screw (31).

3. The drainage box culvert according to claim 1, characterized in that: A filter plate (5) is connected to the inner wall of the opening and closing chamber (221), and the filter plate (5) is used to filter sludge in water.

4. A drainage box culvert according to claim 3, characterized in that: The end surface of the filter plate (5) has a plurality of filter holes (51), and the opening and closing plate (41) is connected to the end surface of the filter plate (5) with a plurality of elastic blocks (6). The elastic blocks (6) correspond to the filter holes (51) one by one, and the elastic blocks (6) are embedded in the filter holes (51) and drive the sludge in the filter holes (51) to be discharged.

5. The drainage box culvert according to claim 3, characterized in that: The end surface of the filter plate (5) away from the opening and closing plate (41) is slidably connected to a scraper plate (7), and the bottom wall of the scraper plate (7) is pressed against the end surface of the filter plate (5) and drives the sludge away from the end surface of the filter plate (5).

6. The drainage box culvert according to claim 5, characterized in that: The end surface of the scraper plate (7) is connected to a slider (8), and the end surface of the scraper plate (2) is provided with a sliding groove (222) for the slider (8) to slide.

7. The drainage box culvert according to claim 6, characterized in that: The end surface of the scraper plate (7) is connected to a float (9). When the liquid level in the flow chamber (11) rises, the float (9) floats upward due to the buoyancy, driving the scraper plate (7) to slide and connect to the end surface of the filter plate (5).

8. The drainage box culvert according to claim 7, characterized in that: The scraper (2) is connected to a starting assembly (10), and the starting assembly (10) comprises a closing plate (101), a starting plate (102) and a transmission member (103). The starting plate (102) is slidably connected to the end face of the scraper (2) close to the filter plate (5). The end face of the starting plate (102) protruding from the end face of the scraper (2) is used to abut against the float (9). The closing plate (101) is slidably connected to the end face of the scraper (2) away from the starting plate. The end face of the closing plate (101) abuts against the end face of the opening and closing plate (41) away from the scraper (2) and limits the rotation of the opening and closing plate (41); the transmission member (103) is used to receive the power of the starting plate (102) and drive the closing plate (101) to slide in a direction away from the opening and closing plate (41); the end face of the closing plate (101) is separated from the end face of the opening and closing plate (41), and the limiting effect of the opening and closing plate (41) disappears.

9. A rapid construction method for a drainage box culvert, characterized by: The following steps are involved: Excavating a foundation pit to form a foundation pit for embedding the drainage box culvert according to any one of claims 1 to 8; Pour the cushion layer on the bottom wall of the foundation pit; Hoist the drainage box culvert into the foundation pit; The connections between adjacent drainage box culverts shall be sealed; Backfill is carried out on both sides of the drainage box culvert.

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