CN113374014B

CN113374014B - River channel dredging device

Info

Publication number: CN113374014B
Application number: CN202110595756.5A
Authority: CN
Inventors: 蔡国森; 李庆坤; 杜贞义; 邱庆坤
Original assignee: Shandong Water Conservancy Group Co ltd
Current assignee: Shandong Water Conservancy Group Co ltd
Priority date: 2021-05-29
Filing date: 2021-05-29
Publication date: 2022-09-13
Anticipated expiration: 2041-05-29
Also published as: CN113374014A

Abstract

The utility model relates to a river course sediment removal device belongs to the field of river course sediment removal equipment, lay the ups and downs support plate that is used for depositing silt thing in the river course bottom including the polylith, just the ups and downs support plate is connected with the ups and downs control mechanism who controls its come-up or sink. The staff will sink and float the support plate tiling in the bottom position department of river course, and some filths that fall into in the river easily sink to the support plate department that sinks, when the support plate that sinks is deposited filths such as a certain amount of silt, staff's accessible sinks and floats control mechanism control that the support plate that sinks shifts up to the surface of water top to filths such as silt that deposit up the support plate surface that sinks are cleared up. The diffusion effect of silt in the river can be reduced in the process of cleaning, so that a better cleaning effect is achieved on the river channel.

Description

River channel dredging device

Technical Field

The application relates to the field of river channel dredging equipment, especially relates to a river channel dredging device.

Background

In the related technology, as shown in chinese patent publication No. CN108625417A, published as 2018, 10 and 09, a river dredging method and device are provided, which includes filling a cofferdam at the river, and pumping water in the cofferdam by a sewage pump; then, arranging a low-lying area in the cofferdam, sucking surface sludge in a cofferdam river channel to a tank car by using a sewage suction pump, then stirring and crushing the rubble, construction garbage and the like at the bottom in the river channel by using a river channel dredging device, and repeatedly stirring the sludge in the river channel for three times or more; and then, washing the sediment to mix the sediment and water into slurry, enabling the mixed slurry to flow into a low-lying area, sucking the sludge at the bottom layer in the river channel, crushed rubble, construction waste and the like out of the construction area in the low-lying area, then transporting the sludge to a specified spoil area, and finally dismantling the cofferdam.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: need build the cofferdam earlier when the clearance river course, later need take out the water in the cofferdam futilely, need demolish the cofferdam once more after the clearance is accomplished, whole clearance process is comparatively loaded down with trivial details.

Disclosure of Invention

In order to make things convenient for the staff to clear up the river course, this application provides a river course sediment removal device.

The application provides a pair of river channel dredging device relates to following technical scheme:

a river channel dredging device comprises a plurality of sinking and floating support plates which are paved at the bottom of a river channel and used for storing silt, and the sinking and floating support plates are connected with sinking and floating control mechanisms for controlling the sinking and floating of the sinking and floating support plates.

Through adopting above-mentioned technical scheme, the staff tiles the ups and downs support plate in the bottom position department in the river course, and some filths that fall into in the river easily sink to ups and downs support plate department, and when the ups and downs support plate deposited filths such as a certain amount of silt, staff's accessible ups and downs control mechanism control ups and downs support plate shifts up to the surface of water top to filths such as silt that store up the ups and downs support plate surface are cleared up. The diffusion of the sludge in the river can be reduced in the cleaning process, so that the river can be cleaned better.

Optionally, the sinking and floating control mechanism includes a pair of side plates parallel to each other and perpendicular to the surface of the sinking and floating carrier plate, and a connecting plate for connecting the pair of side plates, the connecting plate is disposed below the sinking and floating carrier plate, and the connecting plate is fixedly connected to the pair of side plates, the sinking and floating carrier plate is disposed between the pair of side plates, a water storage bag is disposed between the sinking and floating carrier plate and the connecting plate, and an outer wall of the water storage bag is fixedly connected to the sinking and floating carrier plate, the side plates, and the connecting plate, respectively, and the sinking and floating control mechanism further includes a water inlet assembly for adding water into the water storage bag and a water discharge assembly for discharging water in the water storage bag.

By adopting the technical scheme, when the sinking and floating carrier plate is required to be taken out from the water bottom, the staff can discharge the water in the water storage bag through the drainage component, so that a cavity is formed in the water storage bag, the overall quality of the dredging device is reduced, and the sinking and floating carrier plate is convenient to move upwards. When the staff need place the ups and downs support plate in the river bottom, the staff passes through the subassembly that intakes to water is irritated into in the water storage bag, and then improves the whole quality of desilting device, so that the ups and downs support plate sinks.

Optionally, the drainage assembly includes a drainage pump, a connection water pipe and a connection air pipe, one end of the connection water pipe penetrates through the water storage bag and is connected with the water storage bag, the other end of the connection water pipe is connected with the drainage pump, one end of the connection air pipe is connected with the water storage bag, and the other end of the connection air pipe extends into the external atmosphere environment.

Through adopting above-mentioned technical scheme, when needing to discharge the inside water of water storage bag, the staff can start the drain pump earlier to make the drain pump through connecting the liquid discharge in the water storage bag of water pipe. The connecting air pipe is used for connecting the water storage bag with an external atmospheric environment, so that the liquid in the water storage bag can be drained by the draining pump, and meanwhile, the water storage bag is not easy to shrink when the draining pump works due to the fact that the connecting air pipe is connected with the water storage bag and the external atmospheric environment.

Optionally, the lateral wall of connecting plate has seted up the inlet opening, the subassembly of intaking includes the inlet tube and is used for controlling the inlet tube to open or the occlusive valve plug part, inlet tube one end and water storage bag intercommunication, the other end wear to locate in the inlet opening and with the lateral wall fixed connection of inlet opening.

Through adopting above-mentioned technical scheme, after silt thing on the surface of ups and downs support plate was cleared up, the inlet tube was opened to the valve plug subassembly to make the water in the river pour into to the inside of the water storage bag.

Optionally, the ups and downs support plate slides and sets up between a pair of side board, and the face of going up of ups and downs support plate is located the below position department of side board, the valve plug part is used for controlling spacing, the control lever of shortest distance between ups and downs support plate and the connecting plate and is used for plugging up the control stopper of inlet tube including being located ups and downs support plate below, spacing of the equal fixedly connected with of every side board, a plurality of supporting spring of one side fixedly connected with of connecting plate are kept away from to spacing, supporting spring perpendicular to ups and downs support plate sets up, and supporting spring's one end and ups and downs support plate fixed connection, the other end and spacing fixed connection, the control lever perpendicular to ups and downs support plate sets up, and control lever one end and ups and downs support plate fixed connection, and the other end is worn to locate in the water storage bag and is connected with the control stopper, the control stopper sets up towards the inlet tube.

Through adopting above-mentioned technical scheme, when the silt thing of submarine load-bearing basis weight is born to the ups and downs support plate, the ups and downs support plate moves down, so that supporting spring shrink, the control lever drives control stopper simultaneously and moves to the inlet tube in, so that the inlet tube is blockked up, and then make the inlet tube be difficult to intake, later staff passes through the liquid discharge of drainage subassembly in with the water storage bag, treat that the ups and downs support plate shifts up to the surface of water upper position department after, staff clears up the silt thing of ups and downs support plate department, later supporting spring stretches, so that the ups and downs support plate shifts up, and then drive control stopper through the control lever and break away from the inlet tube, so that the inlet tube intakes.

Optionally, the ups and downs control mechanism still includes many gag lever posts, the vertical setting of gag lever post, and the fixed bottom that sets up in the river course of gag lever post one end, the other end extends to the surface of water top, the sliding hole unanimous with gag lever post figure is seted up to the curb plate, the gag lever post is worn to establish to sliding hole department and is slided the laminating setting with the lateral wall in sliding hole.

Through adopting above-mentioned technical scheme, the setting of gag lever post can make ups and downs support plate and side board shift up or more stable and difficult the rocking when sinking, and then reduces the diffusion of silt thing in the river.

Optionally, the upper wall of the ups and downs support plate is provided with a plurality of silt storage grooves for storing silt along the length direction, and the dredging device further comprises a scraper mechanism for scraping silt on the surface of the ups and downs support plate.

Through adopting above-mentioned technical scheme, deposit the ability that silt thing was deposited to the ups and downs support plate can be improved in the setting of silt groove, and then make the ups and downs support plate can deposit more silt thing.

Optionally, the scraping plate mechanism comprises a scraping plate, a guide rod fixedly connected with the ups and downs support plate along the length direction of the ups and downs support plate, and a driving assembly driving the scraping plate to run along the length direction of the guide rod, the scraping plate is slidably attached to the upper plate surface of the ups and downs support plate, a limiting hole is formed in the ups and downs support plate, the guide rod penetrates through the limiting hole, and the ups and downs support plate is slidably connected with the guide rod.

Through adopting above-mentioned technical scheme, the face laminating setting of scraping board and ups and downs support plate, when drive assembly control scraping board operation, scraping board can clear up the silt thing of ups and downs support plate department. The setting of guide bar can play limiting displacement to the scraping plate for the scraping plate operation is more reliable and more stable.

Optionally, the driving assembly includes a pair of driving motors and a pulling rope, one driving motor is arranged on each side of the river channel, one end of the pulling rope is wound around an output shaft of the driving motor, and the other end of the pulling rope is tied and fixed with the scraping plate.

Through adopting above-mentioned technical scheme, when needs clear up the silt thing of ups and downs support plate department, one of them driving motor rotates to the rolling pulling rope, and then makes the pulling rope drive the scraper and move along the length direction of ups and downs support plate, so that the silt thing of ups and downs support plate department is scraped. And after the scraping plate moves to the end position of the ups and downs carrier plate, the driving motor positioned at the position far away from the scraping plate is started, so that the scraping plate moves towards the other end of the ups and downs carrier plate, and silt at the position where the ups and downs carrier plate is positioned is cleaned.

Optionally, a filter hole is formed in the part, located above the ups and downs carrier plate, of the side plate.

By adopting the technical scheme, the arrangement of the filter holes can facilitate the water flow at the position of the floating carrier plate to flow to the river through the filter holes.

In summary, the present application includes at least one of the following advantageous technical effects:

1. arranging a floating carrier plate: the staff will sink and float the support plate tiling in the bottom position department of river course, and some filths that fall into in the river easily sink to the support plate department that sinks, when the support plate that sinks is deposited filths such as a certain amount of silt, staff's accessible sinks and floats control mechanism control that the support plate that sinks shifts up to the surface of water top to filths such as silt that deposit up the support plate surface that sinks are cleared up. The diffusion effect of the sludge in the river can be reduced in the cleaning process, so that a better cleaning effect is achieved on the river;

2. setting of the valve plug assembly: when the sinking and floating carrier plate bears silt with a certain weight on the water bottom, the sinking and floating carrier plate moves downwards to enable the supporting spring to contract, meanwhile, the control rod drives the control plug to move into the water inlet pipe to enable the water inlet pipe to be blocked, so that the water inlet pipe is difficult to enter water, then, a worker discharges liquid in the water storage bag through the drainage assembly, after the sinking and floating carrier plate moves upwards to a position above the water surface, the worker cleans the silt at the sinking and floating carrier plate, then the supporting spring stretches to enable the sinking and floating carrier plate to move upwards, and then the control plug is driven by the control rod to be separated from the water inlet pipe, so that the water inlet pipe enters water;

3. the scraper mechanism is arranged: when silt at the position of the ups and downs carrier plate needs to be cleaned, one of the driving motors rotates to wind the pulling rope, so that the pulling rope drives the scraping plate to move along the length direction of the ups and downs carrier plate, and the silt at the position of the ups and downs carrier plate is scraped. And after the scraping plate moves to the end position of the ups and downs carrier plate, the driving motor positioned at the position far away from the scraping plate is started, so that the scraping plate moves towards the other end of the ups and downs carrier plate, and silt at the position where the ups and downs carrier plate is positioned is cleaned.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is a partial cross-sectional view of the side panels, the connecting panels and the water storage in an embodiment of the present application;

FIG. 3 is a schematic view of the connection between the drainage assembly and the water storage bag in the embodiment of the present application;

fig. 4 is an enlarged schematic view of a portion a in fig. 2.

Description of the reference numerals: 100. a sinking and floating carrier plate; 110. a side plate; 111. a filtration pore; 120. a connecting plate; 130. a water storage bag; 140. a silt storage tank; 200. a scraping plate mechanism; 210. scraping a plate; 220. a guide bar; 230. pulling the rope; 240. a drive motor; 250. a supporting seat; 300. a drainage assembly; 310. a limiting rod; 320. draining pump; 330. connecting a water pipe; 340. connecting an air pipe; 400. a water inlet pipe; 500. a valve plug member; 510. a limiting strip; 520. a control lever; 530. a control plug; 540. a support spring; 550. a placement groove; 560. a limiting column; 570. a barrier strip; 580. a groove; 590. adjusting the spring; 600. closing the door; 700. a river channel.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a river channel dredging device, refer to fig. 1, it includes the ups and downs support plate 100 of polylith flatly laying in river 700 bottom, is used for controlling the ups and downs control mechanism that ups and downs support plate 100 floats or sinks and is used for scraping the silt thing of ups and downs support plate 100 upper plate department and move to the outside scraping plate mechanism 200 of ups and downs support plate 100.

Referring to fig. 1 and 2, the levitation control mechanism includes a pair of symmetrically disposed side plates 110 and a connecting plate 120 for connecting the pair of side plates 110. The side plates 110 are disposed perpendicular to the surface of the ups and downs carrier 100, and the ups and downs carrier 100 is disposed between the pair of side plates 110. The connecting plate 120 is parallel to the ups and downs carrier 100 and disposed under the ups and downs carrier 100, and the connecting plate 120 is fixedly connected to the pair of side plates 110. A cavity is arranged between the ups and downs carrier plate 100 and the connecting plate 120, a water storage bag 130 capable of storing liquid to improve the overall quality of the dredging device is arranged in the cavity, and the outer wall of the water storage bag 130 is respectively bonded and fixed with the ups and downs carrier plate 100, the side plate 110 and the connecting plate 120. The sinking and floating control mechanism further comprises a plurality of limiting rods 310, a water inlet component for filling water into the water storage bag 130 and a water outlet component 300 for discharging water from the water storage bag 130.

The equal vertical setting of gag lever post 310, and the fixed bottom that sets up in river course 700 of one end of gag lever post 310, the other end extends to surface of water top position department, and every one end of side board 110 all is connected with a gag lever post 310, and the slip hole unanimous with gag lever post 310 figure is seted up to side board 110, and gag lever post 310 wears to establish to slip hole department and slides the laminating setting with the lateral wall in slip hole.

When the buoyant carrier 100 needs to be controlled to move upward so that the buoyant carrier 100 moves to a position above the water surface, the drainage assembly 300 works to drain the liquid in the water storage bag 130, so that the buoyant carrier 100 moves upward. When the worker needs to place the buoyant carrier 100 under the water, the worker controls the liquid to enter the water storage bag 130 through the water inlet assembly, so that the buoyant carrier 100 moves downward.

Referring to fig. 3, the drain assembly 300 includes a drain pump 320, a connection water pipe 330, and a connection air pipe 340, and the connection air pipe 340 and the connection water pipe 330 are flexible and bendable hoses. One end of the connection water pipe 330 is inserted into the water storage bag 130 and hermetically connected to the water storage bag 130, and the other end is connected to the drainage pump 320. One end of the connecting air pipe 340 is inserted into the water storage bag 130 and is hermetically connected with the water storage bag 130, and the other end of the connecting pipe extends into the external atmosphere.

During draining, the drainage pump 320 can drain the water in the water storage bag 130 through the connection pipe 330, and the connection pipe 340 is connected to the external atmosphere, so that the floating carrier plate 100 can move upward by draining the water in the water storage bag 130.

Referring to fig. 2 and 3, the water inlet assembly includes a water inlet pipe 400 and a valve plug member 500 for blocking or opening the water inlet pipe 400. The lateral wall of connecting plate 120 has seted up the inlet opening, and the central axis of inlet opening perpendicular to ups and downs support plate 100 and connecting plate 120 set up, and the one end and the water storage bag 130 intercommunication of inlet tube 400, and inlet tube 400 and water storage bag 130 fixed connection that seals, the other end of inlet tube 400 wear to locate in the inlet opening and with the lateral wall fixed connection of inlet opening.

The ups and downs carrier plate 100 is slidably disposed between the pair of side plates 110, the upper surface of the ups and downs carrier plate 100 is located below the side plates 110, and the side walls of the side plates 110 are provided with filtering holes 111 above the ups and downs carrier plate 100 to filter the sludge, so that the water can flow out of the filtering holes 111.

Referring to fig. 2 and 4, the valve plug assembly 500 includes a stopper bar 510, a control rod 520, and a control plug 530 for plugging the inlet tube 400. The limiting strips 510 are horizontally arranged below the ups and downs carrier plate 100, the limiting strips 510 are fixedly connected with the side plates 110, each side plate 110 is fixedly connected with one limiting strip 510, a plurality of supporting springs 540 are fixedly connected between the limiting strips 510 and the ups and downs carrier plate 100, a plurality of placing grooves 550 for placing the supporting springs 540 are formed in the side walls of the limiting strips 510, one ends of the supporting springs 540 are fixedly connected with the bottom walls of the placing grooves 550, the other ends of the supporting springs 540 are fixedly connected with the ups and downs carrier plate 100, and the supporting spring 540 is internally provided with a limit column 560, the limit column 560 is arranged perpendicular to the floating carrier plate 100, one end of the limiting column 560 is fixedly connected with the ups and downs carrier plate 100, the bottom wall of the placing groove 550 is provided with a through hole, the through hole and the placing groove 550 are coaxially arranged, and the diameter of through-hole is less than the diameter of standing groove 550, and inside spacing post 560 slided to wear to locate the through-hole, and the lateral wall laminating setting of the lateral wall of spacing post 560 and through-hole. The control rod 520 is perpendicular to the ups and downs carrier 100, one end of the control rod 520 is fixedly connected to the ups and downs carrier 100, the other end of the control rod 520 penetrates through the water storage bag 130 to be connected to the control plug 530, and the control plug 530 faces the water inlet pipe 400.

The valve plug assembly further comprises a blocking strip 570 for blocking the upward movement of the ups and downs carrier plate 100, a groove 580 is formed in the side wall, close to each other, of the side edge plate 110 along the length direction of the side edge plate, the blocking strip 570 is rotatably arranged in the groove 580 through a rotating shaft, the blocking strip 570 is connected with an adjusting spring 590, one end of the adjusting spring 590 is fixedly connected with the bottom wall of the groove 580, and the other end of the adjusting spring is fixedly connected with the side wall of the blocking strip 570. The barrier 570 is located at the position where its lower side wall extends to the outside of the groove 580 under the action of the adjusting spring 590, and is located at the position below the ups and downs carrier plate 100, when the ups and downs carrier plate 100 stores a certain amount of sludge, the ups and downs carrier plate 100 moves down to push the barrier 570 to rotate to the inside of the groove 580, after the ups and downs carrier plate 100 moves down to the position below the barrier 570, the barrier 570 extends to the outside of the groove 580 again under the action of the adjusting spring 590, so that the ups and downs carrier plate 100 is always located below the barrier. And at this time, the control plug 530 is inserted into the inside of the water inlet pipe 400.

In order to reduce the diffusion of silt along the end of the ups and downs carrier plate 100 during the up-moving process of the ups and downs carrier plate 100, the end of the connecting plate 120 is hinged with a pair of closing doors 600, and when the closing doors 600 rotate to form a 90-degree included angle with the connecting plate 120, the height of the closing doors 600 is higher than that of the ups and downs carrier plate 100, the closing doors 600 are connected with latch locks, so that the closing doors 600 abut against the end of the ups and downs carrier plate 100, and the side walls of the closing doors 600 are provided with a plurality of filtering holes 111, so that the liquid at the ups and downs carrier plate 100 flows out.

In order to improve the holding capacity of the ups and downs carrier plate 100, a plurality of silt storage grooves 140 for storing silt are formed on the upper wall of the ups and downs carrier plate 100 along the length direction thereof.

Referring to fig. 3, the squeegee mechanism includes a squeegee plate 210, a guide bar 220, and a driving assembly. The guide rod 220 is fixedly connected with the ups and downs carrier plate 100 along the length direction of the ups and downs carrier plate 100, the scraping plate 210 is slidably attached to the upper surface of the ups and downs carrier plate 100, the ups and downs carrier plate 100 is provided with a limiting hole, the guide rod 220 is arranged in the limiting hole in a penetrating manner, and the side wall of the limiting hole is slidably attached to the guide rod 220. The driving assembly comprises a pair of driving motors 240 and a pulling rope 230, one driving motor 240 is arranged on each side of the river channel 700, the upper end of the limiting rod 310 is fixedly connected with a supporting seat 250, the driving motors 240 are fixedly arranged at the supporting seat 250, one end of the pulling rope 230 is wound at the output shaft of the driving motors 240, and the other end of the pulling rope 230 is fixedly connected with the scraping plate 210.

The implementation principle of the embodiment of the application is as follows: in an initial state, the buoyant carrier plate 100 is laid at the bottom of the river channel 700, when a certain amount of silt is carried on the buoyant carrier plate 100, the buoyant carrier plate 100 moves down to a position below the blocking strip 570, the control plug 530 moves down under the action of the buoyant carrier plate 100 and the control rod 520, so that the control plug 530 blocks the water inlet pipe 400, then the drainage pump 320 works to drain the water in the water storage bag 130 through the connection water pipe 330, so that the buoyant carrier plate 100 moves up to a position above the water surface, then a worker rotates the closing door 600 to make the position of the closing door 600 lower than the position of the buoyant carrier plate 100, and then the motor 240 is driven to rotate to control the scraping plate 210 to reciprocate along the buoyant carrier plate 100, so as to clean the silt at the buoyant carrier plate 100.

When the sludge on the floating carrier plate 100 is cleaned up, the worker presses the floating carrier plate 100 toward the connecting plate 120 to separate the floating carrier plate 100 from the barrier strips 570, then rotates the barrier strips 570 to rotate the barrier strips 570 into the grooves 580, so that the support springs 540 jack up the floating carrier plate 100 to move to the positions above the barrier strips 570, and along with the process that the floating carrier plate 100 moves upwards, the control rod 520 drives the control plug 530 to separate from the water inlet pipe 400, so that water enters the water storage bag 130, and the floating carrier plate 100 sinks.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a river course dredging device which characterized in that: the water storage bag type water storage device comprises a plurality of sinking and floating support plates (100) which are laid at the bottom of a river channel (700) and used for storing silt, the sinking and floating support plates (100) are connected with sinking and floating control mechanisms for controlling the sinking and floating of the sinking and floating support plates (100), each sinking and floating control mechanism comprises a pair of side plates (110) which are parallel to each other and perpendicular to the surfaces of the sinking and floating support plates (100) and connecting plates (120) for connecting the pair of side plates (110), each connecting plate (120) is arranged below the sinking and floating support plate (100), each connecting plate (120) is fixedly connected with the corresponding side plate (110), the sinking and floating support plates (100) are arranged between the corresponding side plates (110), water storage bags (130) are arranged between the sinking and floating support plates (100) and the connecting plates (120), the outer walls of the water storage bags (130) are fixedly connected with the sinking and floating support plates (100), the side plates (110) and the connecting plates (120) respectively, each sinking and floating control mechanism further comprises a water inlet assembly for adding water into the water storage bags (130) and a water inlet assembly for adding device for adding water into the water storage bags (130) A drainage assembly (300) for draining the water in the water storage bag (130);

the drainage assembly (300) comprises a drainage pump (320), a connecting water pipe (330) and a connecting air pipe (340), one end of the connecting water pipe (330) is arranged in the water storage bag (130) in a penetrating mode and connected with the water storage bag (130), the other end of the connecting water pipe is connected with the drainage pump (320), one end of the connecting air pipe (340) is connected with the water storage bag (130), and the other end of the connecting air pipe extends into the external atmospheric environment;

the side wall of the connecting plate (120) is provided with a water inlet hole, the water inlet assembly comprises a water inlet pipe (400) and a valve plug component (500) for controlling the opening or closing of the water inlet pipe (400), one end of the water inlet pipe (400) is communicated with the water storage bag (130), and the other end of the water inlet pipe penetrates through the water inlet hole and is fixedly connected with the side wall of the water inlet hole;

the floating carrier plate (100) is arranged between a pair of side plates (110) in a sliding mode, the upper plate surface of the floating carrier plate (100) is located below the side plates (110), the valve plug component (500) comprises a limiting strip (510) and a control rod (520) which are located below the floating carrier plate (100) and used for controlling the shortest distance between the floating carrier plate (100) and the connecting plate (120), and a control plug (530) used for plugging the water inlet pipe (400), each side plate (110) is fixedly connected with one limiting strip (510), one side, far away from the connecting plate (120), of each limiting strip (510) is fixedly connected with a plurality of supporting springs (540), each supporting spring (540) is perpendicular to the floating carrier plate (100), one end of each supporting spring (540) is fixedly connected with the floating carrier plate (100), the other end of each supporting spring is fixedly connected with the limiting strip (510), and the control rod (520) is perpendicular to the floating carrier plate (100), one end of the control rod (520) is fixedly connected with the sinking-floating carrier plate (100), the other end of the control rod is arranged in the water storage bag (130) in a penetrating way and is connected with the control plug (530), and the control plug (530) faces the water inlet pipe (400).

2. The river channel dredging device according to claim 1, wherein: the ups and downs control mechanism still includes many gag lever posts (310), gag lever post (310) vertical setting, and gag lever post (310) one end is fixed to be set up in the bottom of river course (700), and the other end extends to the surface of water top, the sliding hole unanimous with gag lever post (310) figure is seted up in curb plate (110), gag lever post (310) wear to establish to sliding hole department and with the lateral wall slip laminating setting in sliding hole.

3. The river channel dredging device according to claim 1, wherein: the upper surface wall of the ups and downs carrier plate (100) is provided with a plurality of silt storage grooves (140) used for storing silt along the length direction, and the dredging device further comprises a scraping plate mechanism used for scraping silt on the surface of the ups and downs carrier plate (100).

4. A river channel dredging device according to claim 3, wherein: the scraper mechanism comprises a scraping plate (210), a guide rod (220) fixedly connected with the ups and downs carrier plate (100) along the length direction of the ups and downs carrier plate (100) and a driving assembly driving the scraping plate (210) to run along the length direction of the guide rod (220), the scraping plate (210) is slidably attached to the upper plate surface of the ups and downs carrier plate (100), a limiting hole is formed in the ups and downs carrier plate (100), the guide rod (220) penetrates through the limiting hole, and the ups and downs carrier plate (100) is slidably connected with the guide rod (220).

5. The river channel dredging device according to claim 4, wherein: the driving assembly comprises a pair of driving motors (240) and a pulling rope (230), one driving motor (240) is arranged on each side of the river channel (700), one end of the pulling rope (230) is wound at an output shaft of the driving motors (240), and the other end of the pulling rope (230) is fixedly tied with the scraping plate (210).

6. The river channel dredging device of claim 1, wherein: the side plate (110) is provided with a filtering hole (111) at the upper part of the ups and downs carrier plate (100).