River flood prevention drainage channel

Abstract

The invention discloses a river flood prevention drainage channel, and belongs to the technical field of drainage channels, the river flood prevention drainage channel comprises a drainage channel main body, the upper end of the drainage channel main body is provided with a fixing frame, one side in the drainage channel main body is provided with a diversion mechanism, the fixing frame is internally provided with a grating automatic cleaning mechanism, and the side edge of the fixing frame is provided with a grating opening and closing mechanism; according to the automatic grille opening and closing mechanism, after a first motor is started, a first driving shaft drives a small gear to rotate, the small gear drives a large gear to rotate through meshing, then a rotating shaft and a rotating frame are driven to rotate, automatic opening and closing of a grille body are achieved, the automatic opening and closing function is particularly suitable for rainstorm weather, and water level changes can be quickly responded; the drainage channel is guaranteed to be unobstructed, garbage is effectively prevented from entering a sewer line, manual intervention is reduced, operation efficiency is improved, the method is particularly suitable for urban areas where waterlogging frequently occurs, waterlogging pressure can be effectively relieved, and safe operation of cities is guaranteed.

Description

Technical Field

[0001] This invention belongs to the field of drainage ditch technology, specifically relating to a river flood control drainage ditch. Background Technology

[0002] River flood control and drainage channels are key facilities in urban flood control and drainage systems. They are typically located along riverbanks, in low-lying areas, or along roadsides, and are constructed using reinforced concrete, precast box culverts, or HDPE pipes. With rectangular, trapezoidal, or circular cross-sections, they rely on gravity flow to rapidly direct stormwater runoff to downstream pumping stations, storage tanks, or main pipelines, thus reducing flood peaks and preventing urban flooding. Fixed metal gratings are usually welded or inserted at the front end of the channel, with bar spacing typically between 20-50mm. These gratings intercept floating debris, branches, plastic bags, foam boards, etc., preventing direct entry of debris into pumping station impellers, municipal pipelines, or flood storage box culverts, thereby ensuring the safe operation of pumping station units and the unobstructed flow of downstream pipelines. Traditional channels are also equipped with crushed stone bedding layers, filter layers, and wing walls to enhance erosion resistance and structural stability.

[0003] However, existing drainage ditches have the following problems: First, the fixed screens cannot automatically open and close with the water level. During heavy rain, the large amount of garbage can easily cause the screens to be completely blocked, resulting in a sharp reduction in the flow cross-section and the occurrence of backflow or backwater from upstream, which exacerbates urban flooding. Second, the screens lack an automatic cleaning mechanism and rely solely on manual cleaning on a regular basis. This is difficult to do in time at night or during extreme weather. The tangled weeds and plastic film form a "filter cake," further reducing the water flow capacity, and manual cleaning poses safety risks. Third, the ditches are not equipped with diversion bypasses or emergency overflow outlets. When the screens are completely blocked, the water has nowhere to go and can only overflow, flooding surrounding roads and residential areas, thus becoming a new source of disaster. Summary of the Invention

[0004] To address the problems mentioned in the background section, this invention provides a river flood control and drainage channel, which features automatic opening and closing of fixed screens, automatic cleaning of fixed screens, and water flow guidance.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a river flood control drainage channel, comprising a drainage channel body, a fixed frame provided at the upper end of the drainage channel body, a flow guiding mechanism provided on one side inside the drainage channel body, an automatic bar cleaning mechanism provided inside the fixed frame, a bar opening and closing mechanism provided on the side of the fixed frame, and a bar body provided at the lower end of the bar opening and closing mechanism.

[0006] The grille opening and closing mechanism includes a drive assembly, a drive assembly is provided on the side of the fixed frame, a rotating shaft is provided on the side of the drive assembly, a rotating frame is provided on the surface of the rotating shaft, the grille body is fixed inside the lower end of the rotating frame, and a limit assembly is provided at the upper end of the drainage ditch body near the fixed frame.

[0007] Furthermore, the drive assembly includes a mounting box, a mounting box is provided on the side of the fixing frame, a motor is provided on the side of the mounting box, a drive shaft is provided at the output end of the motor, a pinion is provided at the other end of the drive shaft, a large gear is meshed with the side of the pinion, and the large gear is fixed on one end surface of the rotating shaft.

[0008] Furthermore, the limiting component includes a first fixing seat, a second fixing seat, and a second fixing seat. The lower side of the first fixing seat and the second fixing seat are provided with ear plates, which are fixedly connected to the main body of the drainage ditch by bolts. A second motor is provided on the side of the first fixing seat, and a locking rod is connected to the output end of the second motor. A corresponding locking groove for the locking rod is opened at the upper end of the second fixing seat.

[0009] Furthermore, the automatic cleaning mechanism for the grille includes a reciprocating lead screw, which is rotatably connected inside the fixed frame. A drive component two is provided on one end surface of the reciprocating lead screw, and a nut block is threadedly connected to the surface of the reciprocating lead screw. A cleaning component is provided at the lower end of the nut block.

[0010] Furthermore, the second drive assembly includes a third motor, the third motor is provided at the side edge of the fixed frame, the output end of the third motor is provided with a second drive shaft, the other end of the second drive shaft is provided with a first bevel gear, and one end surface of the reciprocating screw is provided with a second bevel gear that meshes with the first bevel gear.

[0011] Furthermore, the automatic cleaning mechanism for the grille also includes pulleys, pulleys are provided on the side of the nut block, a T-shaped connecting block is provided at the connection between the nut block and the cleaning component, and a through groove corresponding to the T-shaped connecting block is provided at the lower end of the interior of the fixing frame.

[0012] Furthermore, the cleaning component includes a second mounting box, the lower end of the T-shaped connecting block is provided with the second mounting box, the inside of the second mounting box is provided with a fourth motor, the output end of the fourth motor is provided with a first rotating rod, the other end of the first rotating rod is provided with a third bevel gear, the side of the third bevel gear is meshed with the fourth bevel gear, the inside of the fourth bevel gear is provided with the second rotating rod, the lower end of the second rotating rod is provided with a cleaning roller, and the surface of the cleaning roller is provided with bristles.

[0013] Furthermore, the connection between the rotating rod 2 and the mounting box 2 is rotatably connected by a bearing, and both ends of the reciprocating screw are rotatably connected to the fixed frame by bearings. The nut block has a corresponding screw hole for the reciprocating screw and is threadedly connected to it.

[0014] Furthermore, the flow guiding mechanism includes a mounting box three, which is provided on the side of the main body of the drainage ditch. A transmission component is provided inside the mounting box three, and a flow guiding rod is provided on the side of the transmission component inside the main body of the drainage ditch. A flow guiding plate is provided on the surface of the flow guiding rod.

[0015] Furthermore, the transmission assembly includes a motor five, which is located at the center of the side of the mounting box three. The output end of the motor five is provided with a drive gear, and three sets of driven gears are meshed on the side of the drive gear. The driven gears are fixed to one end surface of the guide rod, and the guide vanes are distributed in a staggered manner on the surface of the three sets of guide rods.

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

[0017] 1. This invention features an automatic opening and closing mechanism for the grille. Once the motor starts, the drive shaft rotates a small gear, which in turn rotates a large gear, thereby rotating the rotating shaft and the rotating frame. This achieves automatic opening and closing of the grille body. This automatic opening and closing function is particularly suitable for heavy rain, as it can quickly respond to changes in water level, ensure unobstructed drainage, effectively prevent garbage from entering the sewer system, reduce manual intervention, and improve operational efficiency. It is especially suitable for areas prone to urban flooding, effectively alleviating flooding pressure and ensuring the safe operation of the city.

[0018] 2. This invention features an automatic cleaning mechanism for the grille. After motor three starts, drive shaft two drives bevel gear one to rotate. Bevel gear one meshes with bevel gear two to rotate, which in turn drives the reciprocating screw to rotate. The nut block moves back and forth along the reciprocating screw, causing the cleaning components to clean the grille body. Motor four drives the cleaning roller to rotate, and the brush bristles scrub the grille body to ensure the surface of the grille body is clean and prevent clogging. This automatic cleaning function is particularly suitable for drainage ditches that operate for a long time, effectively reducing the frequency and cost of manual cleaning and improving the operating efficiency and service life of the equipment.

[0019] 3. This invention incorporates a flow guiding mechanism. After the motor starts, the driving gear meshes with three sets of driven gears to rotate, which in turn drives the flow guide rod to rotate. The flow guide plate guides the direction of water flow, ensuring that the water flows smoothly through the main body of the drainage channel, avoiding damage to the main body of the grating due to water flow impact, and improving drainage efficiency. This flow guiding design is particularly suitable for rainy weather, effectively guiding water flow, reducing impact on the main body of the grating, extending the service life of the equipment, improving drainage efficiency, and alleviating urban flooding pressure. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a perspective view of the automatic opening and closing mechanism for the grille of the present invention;

[0022] Figure 3 This is a perspective view of the limiting component of the present invention;

[0023] Figure 4 This is a perspective view of the automatic grille cleaning mechanism of the present invention;

[0024] Figure 5 This is a perspective view of the cleaning component of the present invention;

[0025] Figure 6 This is a perspective view of the flow guiding mechanism of the present invention;

[0026] In the diagram: 1. Main body of drainage ditch; 2. Flow guiding mechanism; 21. Mounting box three; 22. Transmission assembly; 221. Motor five; 222. Drive gear; 223. Driven gear; 23. Flow guide rod; 24. Flow guide plate; 3. Main body of grille; 4. Grille opening and closing mechanism; 41. Drive assembly one; 411. Small gear; 412. Large gear; 413. Mounting box one; 414. Drive shaft one; 415. Motor one; 42. Rotating shaft; 43. Rotating frame; 44. Limiting assembly; 441. Slot; 442. Locking rod; 443. Motor two; 444. Fixing base one; 4 45. Bolt; 446. Ear plate; 447. Fixing seat two; 5. Fixing frame; 6. Automatic cleaning mechanism for grilles; 61. Drive assembly two; 611. Motor three; 612. Drive shaft two; 613. Bevel gear one; 614. Bevel gear two; 62. Reciprocating screw; 63. Nut block; 64. Pulley; 65. Through groove; 66. Cleaning assembly; 661. Mounting box two; 662. Motor four; 663. Rotating rod one; 664. Bevel gear three; 665. Bevel gear four; 666. Rotating rod two; 667. Cleaning roller; 668. Brush bristles; 67. T-shaped connecting block. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. 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.

[0028] Example 1

[0029] Please see Figure 1-6The present invention provides the following technical solution: a river flood control drainage channel, including a drainage channel body 1, a fixing frame 5 is provided at the upper end of the drainage channel body 1, a flow guiding mechanism 2 is provided on one side inside the drainage channel body 1, an automatic bar cleaning mechanism 6 is provided inside the fixing frame 5, a bar opening and closing mechanism 4 is provided on the side of the fixing frame 5, and a bar body 3 is provided at the lower end of the bar opening and closing mechanism 4.

[0030] The bar screen opening and closing mechanism 4 includes a drive assembly 41. The drive assembly 41 is provided on the side of the fixed frame 5. The drive assembly 41 is provided on the side of the drive assembly 41. The rotating shaft 42 is provided on the surface of the rotating shaft 42. The bar screen body 3 is fixed inside the lower end of the rotating shaft 43. The upper end of the drainage ditch body 1 is provided with a limit assembly 44 near the fixed frame 5.

[0031] Furthermore, the drive assembly 41 includes a mounting box 413. The mounting box 413 is disposed on the side of the fixing frame 5, and a motor 415 is disposed on the side of the mounting box 413. A drive shaft 414 is disposed at the output end of the motor 415, and a pinion 411 is disposed at the other end of the drive shaft 414. A large gear 412 is meshed with the side of the pinion 411, and the large gear 412 is fixed to one end surface of the rotating shaft 42.

[0032] By adopting the above technical solution, after the motor 415 starts, the drive shaft 414 drives the small gear 411 to rotate. The small gear 411 drives the large gear 412 to rotate through meshing, which in turn drives the rotating shaft 42 and the rotating frame 43 to rotate, realizing the automatic opening and closing of the screen body 3. This effectively prevents garbage from entering the sewer pipe, while reducing manual intervention and improving operating efficiency. This automatic opening and closing function is particularly suitable for rainy weather, and can quickly respond to changes in water level to ensure unobstructed drainage.

[0033] Furthermore, the limiting component 44 of the present invention includes a first fixing seat 444. The first fixing seat 444 is provided on one side of the upper end of the drainage channel body 1 near the fixing frame 5, and the second fixing seat 447 is provided on the other side of the upper end of the drainage channel body 1 near the fixing frame 5. The lower side of the first fixing seat 444 and the second fixing seat 447 are provided with ear plates 446. The ear plates 446 are fixedly connected to the drainage channel body 1 by bolts 445. The side of the first fixing seat 444 is provided with a second motor 443. The output end of the second motor 443 is connected to a locking rod 442. The upper end of the second fixing seat 447 is provided with a corresponding locking groove 441 for the locking rod 442.

[0034] By adopting the above technical solution, the motor 443 drives the lever 442 to extend and retract. The lever 442 cooperates with the slot 441 to limit the rotation frame 43, ensuring that the position of the grille body 3 is accurate during opening and closing, avoiding damage caused by excessive rotation, and improving the stability and reliability of the equipment. The design of the limiting component 44 not only ensures the stability of the grille body 3 under extreme weather conditions, but also extends the service life of the equipment and reduces maintenance costs.

[0035] In this embodiment, the motor 415 is started first, and the opening and closing of the grid body 3 is controlled by the drive component 41. When it is necessary to fix the grid body 3, the motor 443 is started, and the clamp 442 is inserted into the clamp slot 441 to ensure that the grid body 3 is stably fixed and to prevent accidental movement caused by water flow impact. This automated operation process greatly improves the operating efficiency of flood control and drainage channels and reduces manual intervention. It is especially suitable for urban areas prone to waterlogging and can effectively alleviate the pressure of waterlogging.

[0036] Example 2

[0037] The difference between this embodiment and Embodiment 1 is that the automatic cleaning mechanism 6 for the grille includes a reciprocating lead screw 62, which is rotatably connected inside the fixed frame 5. A drive assembly 61 is provided on one end surface of the reciprocating lead screw 62, and a nut block 63 is threadedly connected to the surface of the reciprocating lead screw 62. A cleaning assembly 66 is provided at the lower end of the nut block 63.

[0038] By adopting the above technical solution, the drive component 2 61 drives the reciprocating screw 62 to rotate, and the nut block 63 moves back and forth along the reciprocating screw 62, driving the cleaning component 66 to clean the grille body 3, effectively preventing the grille body 3 from being blocked and ensuring smooth drainage. This automatic cleaning function is particularly suitable for drainage ditches that have been operating for a long time, and can effectively reduce the frequency and cost of manual cleaning.

[0039] Furthermore, in this invention, the second drive assembly 61 includes a third motor 611. The third motor 611 is disposed at the side edge of the fixing frame 5. The output end of the third motor 611 is provided with a second drive shaft 612. The other end of the second drive shaft 612 is provided with a first bevel gear 613. One end surface of the reciprocating screw 62 is provided with a second bevel gear 614 that meshes with the first bevel gear 613.

[0040] By adopting the above technical solution, after the motor 3 611 starts, the drive shaft 2 612 drives the bevel gear 1 613 to rotate. The bevel gear 1 613 drives the bevel gear 2 614 to rotate through meshing, which in turn drives the reciprocating screw 62 to rotate, realizing the reciprocating motion of the nut block 63, and driving the cleaning component 66 to clean the grid body 3. This design not only improves the cleaning efficiency, but also ensures the automation and continuity of the cleaning process.

[0041] Furthermore, the automatic cleaning mechanism 6 for the grille also includes a pulley 64. The pulley 64 is provided on the side of the nut block 63, and a T-shaped connecting block 67 is provided at the connection between the nut block 63 and the cleaning component 66. A through groove 65 corresponding to the T-shaped connecting block 67 is provided at the lower end of the interior of the fixing frame 5.

[0042] By adopting the above technical solution, the pulley 64 reduces the friction of the nut block 63 during movement, and the T-shaped connecting block 67 cooperates with the through groove 65 to ensure that the cleaning component 66 remains stable during movement, thereby improving the cleaning effect. The design of the pulley 64 significantly reduces mechanical wear, extends the service life of the equipment, and improves the movement accuracy and stability of the cleaning component 66.

[0043] Furthermore, the cleaning component 66 includes a second mounting box 661. The lower end of the T-shaped connecting block 67 is provided with the second mounting box 661. A fourth motor 662 is disposed inside the second mounting box 661. A first rotating rod 663 is disposed at the output end of the fourth motor 662. A third bevel gear 664 is disposed at the other end of the first rotating rod 663. A fourth bevel gear 665 is meshed with the side of the third bevel gear 664. A second rotating rod 666 is disposed through the interior of the fourth bevel gear 665. A cleaning roller 667 is disposed at the lower end of the second rotating rod 666. The surface of the cleaning roller 667 is provided with bristles 668.

[0044] By adopting the above technical solution, motor 662 drives rotating rod 663 to rotate, bevel gear 664 drives bevel gear 665 to rotate through meshing, which in turn drives rotating rod 666 to rotate, so that the bristles 668 on cleaning roller 667 brush the grid body 3, further improving the cleaning effect and preventing the accumulation of debris. This multi-stage drive design ensures the efficient rotation of cleaning roller 667, and the bristles 668 can penetrate into the gaps of grid body 3 to thoroughly remove the attached debris.

[0045] Furthermore, in this invention, the connection between the rotating rod 666 and the mounting box 661 is rotatably connected via bearings, and both ends of the reciprocating screw 62 are rotatably connected to the fixing frame 5 via bearings. The nut block 63 has a corresponding threaded hole inside the reciprocating screw 62 and is threadedly connected to it.

[0046] By adopting the above technical solution, the bearing connection ensures smooth rotation of the rotating rod 666 and the reciprocating screw 62, and the threaded connection between the nut block 63 and the reciprocating screw 62 achieves precise reciprocating motion, improving the moving accuracy and stability of the cleaning component 66. This design not only improves the operating efficiency of the equipment, but also ensures the stability and reliability of the cleaning process.

[0047] In this embodiment, when in use, motor 611 is started, driving the reciprocating screw 62 to rotate. The nut block 63 moves back and forth along the reciprocating screw 62, driving the cleaning component 66 to clean the grille body 3. At the same time, motor 662 drives the cleaning roller 667 to rotate, and the brush 668 brushes the grille body 3 to ensure that the surface of the grille body 3 is clean and to prevent clogging. This automatic cleaning function is particularly suitable for drainage ditches that operate for a long time, which can effectively reduce the frequency and cost of manual cleaning and improve the operating efficiency and service life of the equipment.

[0048] Example 3

[0049] The difference between this embodiment and the above embodiments is that: the flow guiding mechanism 2 includes a mounting box 21, the mounting box 21 is provided on the side of the drainage channel body 1, the transmission assembly 22 is provided inside the mounting box 21, the side of the transmission assembly 22 is provided inside the drainage channel body 1 and a flow guiding rod 23 is provided, and the surface of the flow guiding rod 23 is provided with a flow guiding plate 24.

[0050] By adopting the above technical solution, the transmission component 22 drives the guide rod 23 to rotate, and the guide plate 24 guides the direction of water flow, ensuring that the water flows smoothly through the main body 1 of the drainage channel, avoiding damage to the main body 3 of the grid caused by water flow impact, and improving drainage efficiency. This guide design is particularly suitable for rainy weather, which can effectively guide the water flow, reduce the impact on the main body 3 of the grid, and extend the service life of the equipment.

[0051] Furthermore, in this invention, the transmission assembly 22 includes a motor 221. The motor 221 is located at the center of the side of the mounting box 21. A drive gear 222 is provided at the output end of the motor 221. Three sets of driven gears 223 are meshed with the side of the drive gear 222. The driven gears 223 are fixed to one end surface of the guide rod 23. The guide vanes 24 are distributed in a staggered manner on the surface of the three sets of guide rods 23.

[0052] By adopting the above technical solution, after the motor 221 starts, the drive gear 222 drives the three sets of driven gears 223 to rotate through meshing, thereby driving the guide rod 23 to rotate. The guide plate 24 guides the direction of water flow, ensuring that the water flows smoothly through the main body of the drainage channel 1, avoiding damage to the main body of the screen 3 caused by water flow impact, and improving drainage efficiency. This multi-stage transmission design ensures the efficient rotation of the guide rod 23, and the guide plate 24 can accurately guide the direction of water flow, reduce the impact of water flow on the main body of the screen 3, and improve the stability and reliability of the equipment.

[0053] In this embodiment, when the motor 221 is started, the guide rod 23 is driven to rotate through the transmission component 22, and the guide plate 24 guides the direction of water flow, ensuring that the water flows smoothly through the main body 1 of the drainage ditch, avoiding damage to the main body 3 of the grid caused by the impact of the water flow, and improving drainage efficiency. This guide design is particularly suitable for rainy weather, which can effectively guide the water flow, reduce the impact on the main body 3 of the grid, extend the service life of the equipment, improve drainage efficiency, and alleviate the pressure of urban flooding.

[0054] The working principle and usage process of this invention are as follows: When using this invention, firstly, motor 415 is started, and the opening and closing of the grille body 3 is controlled by drive component 41. When it is necessary to fix the grille body 3, motor 443 is started, and the locking rod 442 is inserted into the locking slot 441 to ensure the grille body 3 is stably fixed. Then, motor 611 is started, driving the reciprocating screw 62 to rotate. The nut block 63 moves back and forth along the reciprocating screw 62, driving the cleaning component 66 to clean the grille body 3. Simultaneously, motor 662 drives the cleaning roller 667 to rotate, and the bristles 668 clean the grille body 3. The main body 3 of the grating is brushed to ensure that its surface is clean and to prevent blockage. The motor 221 is started, and the guide rod 23 is driven to rotate through the transmission component 22. The guide plate 24 guides the water flow direction to ensure that the water flows smoothly through the main body 1 of the drainage channel, avoiding damage to the main body 3 of the grating due to water flow impact. At the same time, the drainage efficiency is improved. This automated and intelligent design significantly improves the operating efficiency of the river flood control drainage channel, reduces manual intervention, and is particularly suitable for urban areas prone to waterlogging. It can effectively alleviate the pressure of waterlogging and ensure the safe operation of the city.

[0055] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A river flood control drainage channel, comprising a drainage channel body (1), wherein a fixing frame (5) is provided at the upper end of the drainage channel body (1), characterized in that: A flow guiding mechanism (2) is provided on one side of the main body of the drainage ditch (1), an automatic cleaning mechanism (6) for the grille is provided inside the fixed frame (5), a grille opening and closing mechanism (4) is provided on the side of the fixed frame (5), and a grille body (3) is provided at the lower end of the grille opening and closing mechanism (4). The grille opening and closing mechanism (4) includes a drive assembly (41), the drive assembly (41) is provided on the side of the fixed frame (5), the drive assembly (41) is provided on the side of the drive assembly (41), the rotating shaft (42) is provided on the surface of the rotating shaft (42), the grille body (3) is fixed inside the lower end of the rotating frame (43), and the upper end of the drainage ditch body (1) is provided with a limit assembly (44) near the fixed frame (5).

2. A river flood control and drainage canal according to claim 1, characterized in that: The drive assembly (41) includes a mounting box (413), the mounting box (413) is provided on the side of the fixing frame (5), the motor (415) is provided on the side of the mounting box (413), the output end of the motor (415) is provided with a drive shaft (414), the other end of the drive shaft (414) is provided with a pinion (411), the side of the pinion (411) is meshed with a large gear (412), and the large gear (412) is fixed on one end surface of the rotating shaft (42).

3. A river flood control and drainage canal according to claim 1, characterized in that: The limiting component (44) includes a first fixing seat (444). The first fixing seat (444) is located on one side of the upper end of the drainage ditch body (1) near the fixing frame (5). The second fixing seat (447) is located on the other side of the upper end of the drainage ditch body (1) near the fixing frame (5). The lower side of the first fixing seat (444) and the second fixing seat (447) is provided with an ear plate (446). The ear plate (446) is fixedly connected to the drainage ditch body (1) by bolts (445). The side of the first fixing seat (444) is provided with a second motor (443). The output end of the second motor (443) is connected to a locking rod (442). The upper end of the second fixing seat (447) is provided with a corresponding locking groove (441) for the locking rod (442).

4. A river flood control and drainage canal according to claim 1, characterized in that: The automatic cleaning mechanism (6) for the grille includes a reciprocating screw (62), which is rotatably connected inside the fixed frame (5). A drive assembly (61) is provided on one end surface of the reciprocating screw (62), and a nut block (63) is threadedly connected to the surface of the reciprocating screw (62). A cleaning assembly (66) is provided at the lower end of the nut block (63).

5. A river flood control and drainage canal according to claim 4, characterized in that: The second drive assembly (61) includes a third motor (611). The third motor (611) is provided at the side edge of the fixed frame (5). The output end of the third motor (611) is provided with a second drive shaft (612). The other end of the second drive shaft (612) is provided with a first bevel gear (613). One end surface of the reciprocating screw (62) is provided with a second bevel gear (614) that meshes with the first bevel gear (613).

6. A river flood control and drainage canal according to claim 4, characterized in that: The automatic cleaning mechanism (6) for the grille also includes a pulley (64), a pulley (64) is provided on the side of the nut block (63), a T-shaped connecting block (67) is provided at the connection between the nut block (63) and the cleaning component (66), and a through groove (65) corresponding to the T-shaped connecting block (67) is provided at the lower end of the inside of the fixing frame (5).

7. A river flood control and drainage canal according to claim 6, characterized in that: The cleaning component (66) includes a second mounting box (661), the lower end of the T-shaped connecting block (67) is provided with the second mounting box (661), the inside of the second mounting box (661) is provided with a fourth motor (662), the output end of the fourth motor (662) is provided with a first rotating rod (663), the other end of the first rotating rod (663) is provided with a third bevel gear (664), the side of the third bevel gear (664) is meshed with a fourth bevel gear (665), the inside of the fourth bevel gear (665) is provided with a second rotating rod (666), the lower end of the second rotating rod (666) is provided with a cleaning roller (667), and the surface of the cleaning roller (667) is provided with bristles (668).

8. A river flood control and drainage canal according to claim 7, characterized in that: The connection between the rotating rod 2 (666) and the mounting box 2 (661) is rotatably connected by a bearing. Both ends of the reciprocating screw (62) are rotatably connected to the fixing frame (5) by bearings. The nut block (63) has a screw hole corresponding to the reciprocating screw (62) inside and is threadedly connected to it.

9. A river flood control and drainage canal according to claim 1, characterized in that: The flow guiding mechanism (2) includes a mounting box three (21). The mounting box three (21) is provided on the side of the drainage ditch body (1). The inside of the mounting box three (21) is provided with a transmission component (22). The side of the transmission component (22) is located inside the drainage ditch body (1) and a flow guiding rod (23) is provided. The surface of the flow guiding rod (23) is provided with a flow guiding plate (24).

10. A river flood control and drainage canal according to claim 9, characterized in that: The transmission assembly (22) includes a motor (221). A motor (221) is located at the center of the side of the mounting box (21). A drive gear (222) is located at the output end of the motor (221). Three sets of driven gears (223) are meshed on the side of the drive gear (222). The driven gears (223) are fixed on one end surface of the guide rod (23). The guide vanes (24) are distributed in a staggered manner on the surface of the three sets of guide rods (23).

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