A riverbed diversion structure

Abstract

This invention discloses a riverbed diversion structure, comprising diversion walls arranged opposite each other, forming a diversion channel between the two diversion walls. One end of the diversion channel is an inlet, and the other end is an outlet. A retrieval frame is vertically slidably arranged between the two diversion walls, located at the end of the diversion channel away from the inlet. The retrieval frame includes a base plate, with side plates on both sides of the top surface of the base plate. A baffle is fixed between the two side plates, with its bottom surface fixed to the top surface of the base plate. The side of the baffle away from the inlet is coplanar with the side of the base plate away from the inlet. Several through holes are formed on the side of the baffle. Ropes are provided on the top surfaces of both side plates. A driving mechanism for driving the ropes to move upward is provided on the diversion wall. This application has the effect of facilitating the cleaning of sand and gravel and other impurities in the diversion channel during the process of diverting the riverbed by the diversion structure, thereby improving the diversion efficiency of the diversion structure.

Description

Technical Field

[0001] This invention relates to the field of riverbed diversion, and more particularly to a riverbed diversion structure. Background Technology

[0002] Construction diversion refers to the engineering measure used in the construction of water conservancy and hydropower projects to maintain the hydraulic structures on dry land, using cofferdams to protect the foundation pit and divert water flow to a designated spillway for downstream discharge. Construction diversion is a very important engineering measure unique to water conservancy engineering construction, especially the construction of dams and gates, and is divided into the full-section cofferdam method and the segmented cofferdam method.

[0003] In the related technology, Chinese utility model patent with publication number CN217150056U discloses a river channel guiding structure, which includes two guide walls arranged opposite each other, a guide channel formed between the two guide walls, a sedimentation tank at the bottom of the guide channel, and a sedimentation box inside the sedimentation tank, with the sedimentation box slidably connected to the guide wall.

[0004] Regarding the aforementioned technologies, a flow channel formed by relatively arranged flow guide walls is used to guide the river. Inside the flow channel, impurities such as sand and gravel in the river will be deposited inside a sedimentation tank. Then, the operator will remove the sedimentation tank from the flow channel for cleaning. When the sedimentation tank is removed from the flow channel, the river needs to be cut off, thereby reducing the flow guiding efficiency of the flow guiding structure. Summary of the Invention

[0005] To address the issue of needing to cut off the river when removing the sedimentation tank from the diversion channel, which reduces the diversion efficiency of the diversion structure, this application provides a riverbed diversion structure.

[0006] The riverbed diversion structure provided in this application adopts the following technical solution:

[0007] A riverbed diversion structure includes diversion walls arranged opposite each other, forming a diversion channel between the two diversion walls. One end of the diversion channel is an inlet, and the other end is an outlet. A retrieval frame is vertically slidably arranged between the two diversion walls. The retrieval frame is located at the end of the diversion channel away from the inlet. The retrieval frame includes a base plate, and side plates are provided on both sides of the top surface of the base plate. A baffle is fixed between the two side plates, and the bottom surface of the baffle is fixed to the top surface of the base plate. The side of the baffle away from the inlet is coplanar with the side of the base plate away from the inlet. Several through holes are opened on the side of the baffle. Ropes are provided on the top surfaces of the two side plates. A driving mechanism for driving the ropes to move upward is provided on the diversion wall.

[0008] By adopting the above technical solution, the riverbed is guided by the relatively set guide walls. The river water flows into the guide channel through the inlet end. A retrieval frame is set between the two guide walls. Sand, gravel and other impurities in the river flow into the retrieval frame through the guide channel. The drive mechanism drives the rope to move upward. The rope drives the retrieval frame to move upward and move the retrieval frame above the guide wall. This makes it easier to remove sand, gravel and other impurities from the retrieval frame during the process of the guide structure guiding the riverbed, thereby improving the guiding efficiency of the guide structure.

[0009] Preferably, the driving mechanism includes a support frame fixed to the two guide walls. The top surface of the support frame is provided with two fixed plates, and a rotating shaft is rotatably arranged between the two fixed plates. Two take-up reels are provided on the rotating shaft. The ends of the two ropes away from the side plates pass through the support frame. The ropes are slidably connected to the support frame in a vertical direction. The top ends of the two ropes are respectively fixed to the two take-up reels. A motor is provided on the support frame, and the output shaft of the motor is fixedly connected to one end of the rotating shaft.

[0010] By adopting the above technical solution, motor one is started, which drives the rotating shaft to rotate, and the rotating shaft drives the take-up reel to rotate. The take-up reel winds the rope around itself, thereby causing the rope to move the retrieval frame upward.

[0011] Preferably, each of the two guide walls has a groove on its opposite side, the groove extending upward to the inner side of the support frame, and a slider is slidably disposed vertically in each of the two grooves. A rotating shaft is fixed on the side of each of the two side plates that are far apart from each other, and the end of the rotating shaft away from the side plate passes through the slider, and the rotating shaft is rotatably connected to the slider.

[0012] By adopting the above technical solution, when the retrieval frame moves vertically, the retrieval frame drives the rotating shaft to move vertically, the rotating shaft drives the slider to move vertically, and the slider moves vertically within the groove, thereby making the vertical movement of the retrieval frame more stable.

[0013] Preferably, the inner surfaces of the two sliding grooves that are far apart from each other are provided with insertion grooves. The end of the rotating shaft that is far away from the side plate is inserted into the insertion groove. The inner surfaces of the insertion grooves are provided with grooves. A gear is provided on the rotating shaft. A rack segment is provided on the side wall of the groove. The rack segment is located above the guide wall. The gear can mesh with the rack segment. A collection mechanism for collecting sand and gravel in the retrieval frame is provided on the guide wall.

[0014] By adopting the above technical solution, when the retrieval frame moves upward and reaches the top of the guide wall, the gear meshes with the rack section. As the retrieval frame continues to move upward, the gear rolls along the rack section, which drives the rotating shaft to rotate. The rotating shaft then drives the retrieval frame to rotate, causing the retrieval frame to be in an inclined state, thereby allowing sand, gravel, and other impurities inside the retrieval frame to slide into the collection mechanism.

[0015] Preferably, the collection mechanism includes a movable plate slidably disposed on two of the flow guide walls. The movable plate is located on the side of the support frame near the water inlet end. A collection box is disposed on the movable plate. Mounting plates are disposed on both of the flow guide walls. The mounting plates are located on the side of the movable plate away from the support frame. A screw is rotatably disposed on one of the mounting plates. The end of the screw away from the mounting plate passes through the movable plate. The screw is threadedly connected to the movable plate. The end of the screw away from the mounting plate is connected to a rotating plate on the side of the support frame near the mounting plate. A guide rod is disposed on the other mounting plate. The end of the guide rod away from the mounting plate passes through the movable plate. The guide rod is slidably connected to the movable plate. The end of the guide rod away from the mounting plate is fixedly connected to the side of the support frame near the mounting plate. A second motor is disposed on the flow guide wall. The output shaft of the second motor is fixedly connected to one end of the screw.

[0016] By adopting the above technical solution, when the salvage frame moves upward to above the collection box, motor two is started. Motor two drives the screw to rotate, and the screw drives the moving plate to move towards the support frame. The moving plate drives the collection box to move towards the support frame, so that the collection box moves to one side of the support frame, thereby allowing sand and gravel and other impurities in the salvage frame to slide into the collection box, making it easier to collect and clean the sand and gravel and other impurities.

[0017] Preferably, the bottom surface of the movable plate is provided with mounting grooves on both sides, and rollers are rotatably installed in the mounting grooves. The top surfaces of the two guide walls are provided with moving grooves, and the rollers can roll in the moving grooves.

[0018] By adopting the above technical solution, when the second motor is started, the second motor drives the screw to rotate, and the screw drives the moving plate to move along the axial direction of the screw. The rollers roll in the moving groove, thereby reducing the friction between the bottom surface of the moving plate and the top surface of the guide wall, which facilitates the movement of the moving plate along the axial direction of the screw.

[0019] Preferably, a sliding groove is provided on the side of the base plate away from the baffle, a guide plate is slidably disposed in the sliding groove, a spring is fixed on the side of the guide plate near the water outlet, and one end of the spring near the water outlet is fixedly connected to the inner side of the sliding groove near the water outlet.

[0020] By adopting the above technical solution, when the retrieval frame moves upward, the guide plate moves away from the baffle under the elastic force of the spring, so that the end of the guide plate away from the baffle moves out of the sliding groove. When the retrieval frame moves upward, the retrieval frame is above the collection box. The second motor is started to move the collection box to one side of the support frame. The retrieval frame continues to move upward, so that the gear and rack mesh. The gear drives the rotating shaft to rotate, so that the retrieval frame is in an inclined state. The end of the guide plate away from the baffle is directly above the collection box, which makes it easier for sand and gravel and other impurities in the retrieval frame to slide down the guide plate into the collection box.

[0021] Preferably, the guide plate has an inclined surface on the side away from the water outlet, and guide rods are inclinedly arranged on the opposite inner surfaces of the two guide walls. The distance between the top of the guide rod and the baffle is greater than the distance between the bottom of the guide rod and the baffle. The inclined surface can abut against the side of the guide rod near the baffle.

[0022] By adopting the above technical solution, when sand and gravel or other impurities in the retrieval frame slide into the collection box, motor two is started. Motor two drives the screw to rotate, and the screw drives the moving plate to move away from the support frame. The moving plate drives the collection box to move away from the support frame. Motor one is started, and motor one drives the rotating shaft to rotate. The rotating shaft drives the take-up reel to rotate, and the rope is wound off the take-up reel. The retrieval frame moves downward under its own gravity. During the downward movement of the retrieval frame, the inclined surface on the guide plate abuts against the side of the guide rod near the baffle, thereby moving the guide plate into the sliding groove.

[0023] Preferably, a limiting groove is formed on the inner side of the sliding groove, and a limiting block is fixed on the side of the guide plate, with the limiting block slidably disposed in the limiting groove.

[0024] By adopting the above technical solution, when the guide plate moves in the sliding groove, the limiting block moves in the limiting groove, thereby reducing the possibility of the guide plate disengaging from the sliding groove.

[0025] Preferably, a stepped plate is provided between the two guide walls, the bottom surface of the stepped plate is coplanar with the bottom surface of the guide wall, the bottom surface of the retrieval frame is in contact with the top surface of the stepped plate, and the stepped plate gradually increases in height towards the water inlet end.

[0026] By adopting the above technical solution, and by setting a stepped plate between the two guide walls, when the river water flows through the guide channel, it is easier for impurities such as sand and gravel in the river water to flow into the retrieval frame along the stepped plate.

[0027] In summary, this application includes at least one of the following beneficial technical effects:

[0028] 1. The riverbed is guided by the relatively set guide walls. The river water flows into the guide channel through the inlet end. A retrieval frame is set between the two guide walls. Sand, gravel and other impurities in the river flow into the retrieval frame through the guide channel. The drive mechanism drives the rope to move upward. The rope drives the retrieval frame to move upward and move the retrieval frame above the guide wall. This makes it easier to remove sand, gravel and other impurities in the retrieval frame during the process of the guide structure guiding the riverbed, thereby improving the guiding efficiency of the guide structure.

[0029] 2. Start motor one. Motor one drives the rotating shaft to rotate, which in turn drives the take-up reel to rotate. The take-up reel winds the rope onto the take-up reel, thereby causing the rope to move the retrieval frame upward.

[0030] 3. When the retrieval frame moves vertically, the retrieval frame drives the rotating shaft to move vertically, the rotating shaft drives the slider to move vertically, and the slider moves vertically within the groove, thus making the vertical movement of the retrieval frame more stable. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of the riverbed diversion structure in an embodiment of this application.

[0032] Figure 2 This is a schematic diagram of the structure of the retrieval frame in an embodiment of this application.

[0033] Figure 3 This is a cross-sectional view of support rod two in an embodiment of this application.

[0034] Figure 4 This is a cross-sectional view of the retrieval frame in an embodiment of this application.

[0035] Figure 5 This is a cross-sectional view of the movable plate in an embodiment of this application.

[0036] Attached reference numerals: 1. Guide wall; 11. Guide channel; 12. Inlet end; 13. Outlet end; 14. Support frame; 141. Support plate one; 142. Support plate two; 143. Horizontal plate; 15. Stepped plate; 16. Guide rod; 2. Salvage frame; 21. Bottom plate; 211. Sliding channel; 212. Guide plate; 213. Limiting block; 214. Limiting groove; 215. Spring; 216. Inclined surface; 22. Side plate; 23. Baffle; 2 4. Through hole; 25. Connecting plate; 3. Motor 1; 31. Fixing plate; 32. Rotating shaft; 33. Take-up reel; 34. Rope; 4. Slider; 41. Slide groove; 42. Rotating shaft; 43. Insertion groove; 44. Groove; 45. Gear; 46. Rack segment; 5. Motor 2; 51. Mounting plate; 52. Moving plate; 53. Collection box; 54. Screw; 55. Guide rod; 56. Mounting groove; 57. Roller; 58. Moving groove. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1-5 This application will be described in further detail.

[0038] This application discloses a riverbed diversion structure.

[0039] Reference Figure 1 As shown, a riverbed diversion structure includes two parallel diversion walls 1, with a diversion channel 11 formed between them. One end of the diversion channel 11 is an inlet end 12, and the other end is an outlet end 13. A stepped plate 15 is fixed between the two diversion walls 1, with the bottom surface of the stepped plate 15 coplanar with the bottom surface of the diversion wall 1. The stepped plate 15 gradually increases in height towards the direction away from the outlet end 13.

[0040] Reference Figure 1 and Figure 2 As shown, a retrieval frame 2 is vertically slidably installed between two guide walls 1. The retrieval frame 2 is located at the end of the guide channel 11 away from the water inlet end 12, and the bottom surface of the retrieval frame 2 abuts against the top surface of the stepped plate 15. The retrieval frame 2 includes a base plate 21, and side plates 22 are fixed on both sides of the top surface of the base plate 21. The sides of the two side plates 22 that are away from each other are coplanar with the two sides of the base plate 21. A baffle 23 is fixed between the two side plates 22. The bottom surface of the baffle 23 is fixed to the top surface of the base plate 21. The side of the baffle 23 away from the water inlet end 12 is coplanar with the side of the base plate 21 that is away from the water inlet end 12. Several through holes 24 are opened on the side of the baffle 23 near the water inlet end 12.

[0041] The river is guided by two parallel guide walls 1. When the river water flows into the guide channel 11 through the inlet 12, the sand and gravel and other impurities in the river water are deposited on the step plate 15, which makes it easier for the river water to flush the sand and gravel and other impurities on the step plate 15 into the retrieval frame 2 during the flow.

[0042] Reference Figure 1 and Figure 2 As shown, support frames 14 are provided on the two guide walls 1. The support frame 14 includes a first support plate 141 and a second support plate 142, which are respectively fixed to the top surfaces of the two guide walls 1. A horizontal plate 143 is integrally formed between the first support plate 141 and the second support plate 142, and the top surface of the horizontal plate 143 is coplanar with the top surface of the first support plate 141. A connecting plate 25 is hinged to the top surface of each of the two side plates 22, and a rope 34 is fixed to the top surface of the connecting plate 25. Two parallel fixed plates 31 are fixed to the top surface of the horizontal plate 143, and a rotating shaft 32 is rotatably arranged between the two fixed plates 31. Two take-up wheels 33 are sleeved and fixed on the rotating shaft 32. The top end of the rope 34 passes through the horizontal plate 143 and is fixedly connected to the take-up wheel 33. The rope 34 is slidably connected to the horizontal plate 143 in the vertical direction. A motor 3 is fixed on the horizontal plate 143, and the output shaft of the motor 3 is fixedly connected to one end of the rotating shaft 32.

[0043] By starting motor 3, motor 3 drives rotating shaft 32 to rotate, rotating shaft 32 drives take-up reel 33 to rotate, take-up reel 33 winds rope 34 around itself, rope 34 drives connecting plate 25 to move upward, connecting plate 25 drives salvage frame 2 to move upward, so that salvage frame 2 moves above guide wall 1, thereby facilitating the removal of sand, gravel and other impurities in salvage frame 2.

[0044] Reference Figure 2 and Figure 3 Each of the two guide walls 1 has a sliding groove 41 on its opposite inner surface, extending upwards to the inner surface of the support frame 14. A slider 4 is vertically slidable within each of the two sliding grooves 41. A rotating shaft 42 is fixed to the opposite side of each of the two side plates 22, with one end of the rotating shaft 42 passing through the slider 4, and the rotating shaft 42 is rotatably connected to the slider 4. An insertion groove 43 is formed on the inner surface of the sliding groove 41 away from the side plate 22, and the end of the rotating shaft 42 away from the side plate 22 is inserted into the insertion groove 43. A recess 44 is formed on the opposite inner surface of the insertion groove 43, with the inner surface of the recess 44 away from the side plate 22 being coplanar with the inner surface of the insertion groove 43 away from the side plate 22. A gear 45 is fixedly fitted onto the rotating shaft 42, and the gear 45 is located within the recess 44. A rack section 46 is fixed on the inner side of the groove 44 near the water inlet end 12. The rack section 46 is located above the guide wall 1, and the top surface of the rack section 46 is fixed to the inner top surface of the groove 44.

[0045] Reference Figure 2 and Figure 4 As shown, a sliding groove 211 is provided on the side of the base plate 21 near the water inlet end 12. A guide plate 212 is slidably disposed in the sliding groove 211. Multiple springs 215 are fixed on the side of the guide plate 212 away from the water inlet end 12. One end of each spring 215 away from the water inlet end 12 is fixedly connected to the inner side of the sliding groove 211 away from the water inlet end 12. Limiting blocks 213 are fixed on both the top and bottom surfaces of the guide plate 212. Limiting grooves 214 are provided on both the inner top and inner bottom surfaces of the sliding groove 211. The limiting blocks 213 are slidably disposed in the limiting grooves 214. Guide rods 16 are fixed on the sides of the two guide walls 1 that are close to each other. The guide rods 16 are inclined. The bottom surface of the guide rods 16 is fixed to the top surface of the stepped plate 15. The distance from the top of the guide rod 16 to the baffle 23 is greater than the distance from the bottom of the guide rod 16 to the baffle 23. The guide plate 212 has an inclined surface 216 on the side away from the baffle 23, and the inclined surface 216 can abut against the side of the guide rod 16 near the baffle 23.

[0046] Reference Figure 3 , Figure 4 and Figure 5As shown, a movable plate 52 is installed above the two guide walls 1. The movable plate 52 is located on the side of the support frame 14 near the water inlet 12. A collection box 53 for collecting sand and other impurities is fixed on the top surface of the movable plate 52. Two mounting grooves 56 are opened on both sides of the bottom surface of the movable plate 52. Rollers 57 are rotatably installed in the mounting grooves 56. Movable grooves 58 are opened on the top surface of the two guide walls 1, and the rollers 57 can roll in the movable grooves 58. Mounting plates 51 are fixed on the top surface of the two guide walls 1. The mounting plates 51 are located on the side of the movable plate 52 away from the support frame 14. A screw 54 is rotatably installed on the side of one of the mounting plates 51 near the support frame 14. The end of the screw 54 away from the mounting plate 51 passes through the movable plate 52 and is threadedly connected to the movable plate 52. The end of the screw 54 away from the mounting plate 51 is rotatably installed on the side of the support plate 141 near the mounting plate 51. Another mounting plate 51 has a guide rod 55 fixed to its side near the support frame 14. The end of the guide rod 55 away from the mounting plate 51 passes through a movable plate 52. The movable plate 52 is slidably connected to the guide rod 55 along its axial direction. The end of the guide rod 55 away from the mounting plate 51 is fixed to the side of the second support plate 142 near the mounting plate 51. A second motor 5 is fixed to the top surface of the flow guide wall 1. The output shaft of the second motor 5 is fixedly connected to one end of the screw 54.

[0047] When motor 3 is started, it drives the rotating shaft 32 to rotate, which in turn drives the take-up reel 33 to rotate, winding the rope 34 onto the reel 33. This causes the rope 34 to pull the retrieval frame 2 upward, moving the guide plate 212 away from the baffle 23 under the elastic force of the spring 215. The end of the guide plate 212 away from the baffle 23 moves out of the sliding groove 211. When the retrieval frame 2 moves above the collection box 53, motor 5 is started, driving the screw 54 to rotate. The screw 54 then moves... The plate 52 moves toward the support frame 14, causing the moving plate 52 to move the collection box 53 to one side of the support frame 14. The retrieval frame 2 continues to move upward, causing the gear 45 to roll along the rack section 46. The gear 45 drives the rotating shaft 42 to rotate, and the rotating shaft 42 drives the retrieval frame 2 to rotate, so that the retrieval frame 2 is in an inclined state. The end of the guide plate 212 away from the baffle 23 is located directly above the collection box 53, which facilitates the sliding of sand and gravel and other impurities in the retrieval frame 2 into the collection box 53, making it easier to collect and clean the sand and gravel and other impurities.

[0048] The implementation principle of a riverbed diversion structure in this application embodiment is as follows: When it is necessary to divert the riverbed, two parallel diversion walls 1 are set up to divert the riverbed, so that the river water flows into the diversion channel 11 through the inlet 12, and the diversion channel 11 guides the river water to the direction that needs to be flowed. When the river water passes through the diversion channel 11, the sand and gravel and other impurities in the river water flow into the dredging frame 2 through the step plate 15, thereby facilitating the centralized cleaning of the sand and gravel and other impurities in the diversion channel 11.

[0049] When it is necessary to clean sand and other impurities in the guide channel 11, motor 3 is started. Motor 3 drives the rotating shaft 32 to rotate, which in turn drives the take-up reel 33 to rotate. The take-up reel 33 winds the rope 34 around itself, thereby pulling the retrieval frame 2 upward. During the upward movement of the retrieval frame 2, the guide plate 212 moves towards the water inlet end 12 under the elastic force of the spring 215, causing the end of the guide plate 212 near the water inlet end 12 to move out of the sliding groove 211. When the retrieval frame 2 moves above the collection box 53, motor 5 is started. Motor 5 drives the screw 54 to rotate, and the screw 54 drives the moving plate 52 towards the support frame 14. The moving plate 52 moves the collection box 53 to one side of the support frame 14. During the upward movement of the retrieval frame 2, the gear 45 meshes with the rack section 46, and the motor 3 continues to drive the rotating shaft 32 to rotate. The retrieval frame 2 moves upward, the gear 45 rolls along the rack section 46, the gear 45 drives the rotating shaft 42 to rotate, and the rotating shaft 42 drives the retrieval frame 2 to rotate, so that the retrieval frame 2 is in an inclined state. The end of the guide plate 212 away from the baffle 23 is located directly above the collection box 53, so that the sand and gravel and other impurities in the retrieval frame 2 slide into the collection box 53, thereby facilitating the cleaning of sand and gravel and other impurities in the diversion channel 11 during the process of diverting the river, and improving the diversion efficiency of the diversion structure.

[0050] When sand and other impurities in the salvage frame 2 slide into the collection box 53, motor 2 5 is started. Motor 2 5 drives the moving plate 52 to move away from the support frame 14, so that the moving plate 52 moves the collection box 53 to one side of the salvage frame 2. Then motor 1 3 is started. Motor 1 3 drives the rotating shaft 32 to rotate, and the rotating shaft 32 drives the take-up reel 33 to rotate. During the rotation of the take-up reel 33, the rope 34 is wound off the take-up reel 33. The salvage frame 2 moves downward under its own gravity. During the downward movement of the salvage frame 2, the inclined surface 216 of the guide plate 212 abuts against the side of the guide rod 55 away from the water inlet end 12. Thus, when the salvage frame 2 moves downward, the guide plate 212 moves into the sliding groove 211, so that the salvage frame 2 continues to collect sand and other impurities in the guide groove 11.

[0051] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A riverbed diversion structure, comprising diversion walls (1) arranged opposite to each other, a diversion channel (11) formed between the two diversion walls (1), one end of the diversion channel (11) being an inlet end (12), and the other end of the diversion channel (11) being an outlet end (13), characterized in that: A retrieval frame (2) is vertically slidably arranged between the two guide walls (1). The retrieval frame (2) is located at the end of the guide channel (11) away from the water inlet (12). The retrieval frame (2) includes a base plate (21). Side plates (22) are provided on both sides of the top surface of the base plate (21). A baffle (23) is fixed between the two side plates (22). The bottom surface of the baffle (23) is fixed to the top surface of the base plate (21). The side of the baffle (23) away from the water inlet (12) is coplanar with the side of the base plate (21) away from the water inlet (12). Several through holes (24) are opened on the side of the baffle (23). Ropes (34) are provided on the top surface of the two side plates (22). A drive mechanism for driving the ropes (34) upward is provided on the guide wall (1). The drive mechanism includes a support frame (14) fixed to the two guide walls (1). Two fixing plates (31) are provided on the top surface of the support frame (14). A rotating shaft (32) is rotatably arranged between the two fixing plates (31). Two take-up pulleys (33) are provided on the rotating shaft (32). The ends of the two ropes (34) away from the side plate (22) pass through the support frame (14). The ropes (34) are slidably connected to the support frame (14) vertically. The top ends of the two ropes (34) are respectively fixed to the two take-up pulleys (33). A motor is provided on the support frame (14). 3) The output shaft of the motor (3) is fixedly connected to one end of the rotating shaft (32). Slide grooves (41) are provided on the opposite sides of the two guide walls (1). The slide grooves (41) extend upward to the inner side of the support frame (14). Slider blocks (4) are slidably arranged vertically in the two slide grooves (41). Rotating shafts (42) are fixed on the opposite sides of the two side plates (22). The end of the rotating shaft (42) away from the side plate (22) passes through the slider (4). The rotating shaft (42) is rotatably connected to the slider (4). Insertion slots (43) are provided on the opposite inner sides of the two slide grooves (41). The end of the rotating shaft (42) away from the side plate (22) is inserted into the groove. The insertion slot (43) has grooves (44) on its opposite inner sides. A gear (45) is provided on the rotating shaft (42). A rack segment (46) is provided on the side wall of the groove (44). The rack segment (46) is located above the guide wall (1). The gear (45) can mesh with the rack segment (46). The guide wall (1) is provided with a collection mechanism for collecting sand and gravel in the salvage frame (2). The collection mechanism includes a movable plate (52) slidably disposed on the two guide walls (1). The movable plate (52) is located on the side of the support frame (14) near the water inlet end (12). A collection box (53) is provided on the movable plate (52).Both of the flow guide walls (1) are provided with mounting plates (51). The mounting plates (51) are located on the side of the movable plate (52) away from the support frame (14). A screw (54) is rotatably mounted on one of the mounting plates (51). The end of the screw (54) away from the mounting plate (51) passes through the movable plate (52). The screw (54) is threadedly connected to the movable plate (52). The end of the screw (54) away from the mounting plate (51) is rotated with the side of the support frame (14) near the mounting plate (51). A movable plate is connected to another mounting plate (51), and a guide rod (55) is provided on the other mounting plate (51). The end of the guide rod (55) away from the mounting plate (51) passes through the movable plate (52). The guide rod (55) is slidably connected to the movable plate (52). The end of the guide rod (55) away from the mounting plate (51) is fixedly connected to the side of the support frame (14) near the mounting plate (51). A second motor (5) is provided on the flow guide wall (1), and the output shaft of the second motor (5) is fixedly connected to one end of the screw (54).

2. The riverbed diversion structure according to claim 1, characterized in that: The bottom surface of the movable plate (52) is provided with mounting grooves (56) on both sides, and a roller (57) is rotatably installed in the mounting groove (56). The top surface of the two guide walls (1) is provided with moving grooves (58), and the roller (57) can roll in the moving groove (58).

3. A riverbed diversion structure according to claim 1, characterized in that: A sliding groove (211) is provided on the side of the base plate (21) away from the baffle (23). A guide plate (212) is slidably arranged in the sliding groove (211). A spring (215) is fixed on the side of the guide plate (212) near the water outlet (13). One end of the spring (215) near the water outlet (13) is fixedly connected to the inner side of the sliding groove (211) near the water outlet (13).

4. A riverbed diversion structure according to claim 3, characterized in that: The guide plate (212) has an inclined surface (216) on the side away from the water outlet (13). Guide rods (16) are inclinedly arranged on the opposite inner sides of the two guide walls (1). The distance between the top of the guide rod (16) and the baffle (23) is greater than the distance between the bottom of the guide rod (16) and the baffle (23). The inclined surface (216) can abut against the side of the guide rod (16) near the baffle (23).

5. A riverbed diversion structure according to claim 3, characterized in that: The inner side of the sliding groove (211) is provided with a limiting groove (214), and the side of the guide plate (212) is fixed with a limiting block (213), which is slidably disposed in the limiting groove (214).

6. A riverbed diversion structure according to claim 1, characterized in that: A stepped plate (15) is provided between the two flow guide walls (1). The bottom surface of the stepped plate (15) is coplanar with the bottom surface of the flow guide wall (1). The bottom surface of the retrieval frame (2) is in contact with the top surface of the stepped plate (15). The stepped plate (15) gradually increases in height towards the water inlet end (12).

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