CN112127403A - Dredging device for hydraulic engineering - Google Patents

Dredging device for hydraulic engineering Download PDF

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Publication number
CN112127403A
CN112127403A CN202010991289.3A CN202010991289A CN112127403A CN 112127403 A CN112127403 A CN 112127403A CN 202010991289 A CN202010991289 A CN 202010991289A CN 112127403 A CN112127403 A CN 112127403A
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CN
China
Prior art keywords
silt
dredging device
movable block
framework
mounting plate
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN202010991289.3A
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Chinese (zh)
Other versions
CN112127403B (en
Inventor
王楠
张德会
周玎
卢金波
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huanglongtan Hydroelectric Power Plant Of State Grid Hubei Electric Power Co ltd
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
Original Assignee
Huanglongtan Hydroelectric Power Plant Of State Grid Hubei Electric Power Co ltd
State Grid Corp of China SGCC
Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Huanglongtan Hydroelectric Power Plant Of State Grid Hubei Electric Power Co ltd, State Grid Corp of China SGCC, Electric Power Research Institute of State Grid Hubei Electric Power Co Ltd filed Critical Huanglongtan Hydroelectric Power Plant Of State Grid Hubei Electric Power Co ltd
Priority to CN202010991289.3A priority Critical patent/CN112127403B/en
Publication of CN112127403A publication Critical patent/CN112127403A/en
Application granted granted Critical
Publication of CN112127403B publication Critical patent/CN112127403B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F3/00Dredgers; Soil-shifting machines
    • E02F3/04Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/88Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02FDREDGING; SOIL-SHIFTING
    • E02F5/00Dredgers or soil-shifting machines for special purposes
    • E02F5/28Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways

Abstract

The invention provides a dredging device for hydraulic engineering, which comprises a frame body for containing sludge, a suction unit for sucking the sludge and a stirring unit for stirring the sludge, wherein the suction unit comprises a suction pipe, a sludge pump, a mounting plate, a hydraulic cylinder, a shearing fork mechanism and a mounting sleeve; the stirring rake is provided with a stirring unit, can stir silt deposited at the bottom of the water, is convenient for a silt pump to suck, can stir sundries such as stones, resin, plastic bags and the like in the silt to two sides, and can adjust the swinging amplitude of the swinging rod to adapt to ditches with different widths.

Description

Dredging device for hydraulic engineering
Technical Field
The invention relates to the technical field of hydraulic engineering equipment, in particular to a dredging device for hydraulic engineering.
Background
Hydraulic engineering is an engineering built for controlling and allocating surface water and underground water in nature to achieve the purposes of removing harmful substances and benefiting. Also known as water engineering. Water is a valuable resource essential for human production and life, but its naturally occurring state does not completely meet the needs of human beings. Only when hydraulic engineering is built, water flow can be controlled, flood disasters are prevented, and water quantity is adjusted and distributed to meet the requirements of people on water resources in life and production. Hydraulic engineering needs to build various types of hydraulic buildings such as dams, dikes, spillways, water gates, water inlets, channels, transition troughs, rafts, fishways and the like so as to achieve the aims.
The dredging device is used in hydraulic engineering to clean a water channel or a water channel, so that sludge deposition is avoided, and water supply and drainage are influenced.
Disclosure of Invention
The invention aims to provide a dredging device for hydraulic engineering to solve the problems.
The technical scheme of the invention is as follows:
a dredging device for hydraulic engineering comprises a frame body for containing sludge, a suction unit for sucking the sludge and a stirring unit for stirring the sludge, wherein a filter screen for filtering is fixedly arranged in the frame body, a drain pipe for draining water is arranged at the bottom of the frame body, the suction unit comprises a suction pipe, a sludge pump, a mounting plate, a hydraulic cylinder, a scissor mechanism and a mounting sleeve, the mounting plate is mounted on the side wall of the frame body through a lifting mechanism, the end part of the mounting plate, which is close to the frame body, is in sliding connection with the side wall of the frame body, the lower part of the mounting plate is provided with the scissor mechanism, a hinge point at the top of the scissor mechanism is hinged with the end part of a telescopic rod of the hydraulic cylinder, a corresponding hinge point at the bottom of the scissor mechanism is hinged with the mounting plate, the hydraulic cylinder is fixedly mounted on the mounting plate, and a bottom end, the mounting sleeve is detachably provided with a suction pipe, the top end of the suction pipe is connected with a second hose, the other end of the second hose is connected with an input port of a sludge pump, an output port of the sludge pump is connected with a first hose, and the other end of the first hose extends into the frame.
On the basis of the technical scheme, the invention also provides the following optional technical scheme:
in one alternative: the mounting plate is composed of an inclined plate section and horizontal plate sections arranged at two ends of the inclined plate section.
In one alternative: elevating system includes first motor, lead screw and belt drive mechanism, the lead screw is totally two and symmetrical rotation installs on the framework lateral wall, one in two lead screws is connected in the first motor drive, two connect through belt drive mechanism between the lead screw top, set up the internal thread hole that supplies the lead screw to pass and connect on the mounting panel.
In one alternative: the mounting panel end fixing has the slider, set up the spout that supplies slider sliding connection on the framework lateral wall.
In one alternative: and a protective net is arranged in a suction port of the suction pipe.
In one alternative: the stirring unit comprises a first waterproof motor, a rotary disc, a swinging rod, a stirring rake, a connecting sleeve, a pin shaft, a movable block, a screw rod and a second waterproof motor, the first waterproof motor is fixedly arranged on the mounting plate, the bottom end of an output shaft of the first waterproof motor is fixedly provided with a turntable, a swing rod is connected below the turntable in a matching way, the bottom of the swing rod is fixed with a stirring rake, the outer ring of the lower end surface of the turntable is fixed with a cylindrical pin, the swing rod is provided with a through groove for the cylindrical pin to insert and slide, a connecting sleeve is movably sleeved at one end of the oscillating rod, a fastening screw for positioning is connected between the connecting sleeve and the oscillating rod, a pin shaft is rotatably arranged at the top of the connecting sleeve, the top end of the pin shaft is fixedly connected with a movable block, the movable block penetrates through the mounting plate and is in sliding connection with the mounting plate, the movable block is provided with a threaded rod in a penetrating mode, the threaded rod is in threaded connection with the movable block, and the second waterproof motor drives the threaded rod to be connected.
In one alternative: the movable block is fixed with a guide block, and the mounting plate is provided with a guide groove for the guide block to slide.
In one alternative: vibration exciters are installed on two sides of the bottom of the filter screen.
Compared with the prior art, the invention has the beneficial effects that:
1. the suction unit is arranged and comprises a suction pipe, a sludge pump, a mounting plate, a hydraulic cylinder, a scissor mechanism and a mounting sleeve, a first motor drives two lead screws to synchronously rotate through a belt transmission mechanism, the lead screws drive the mounting plate to lift, the depth of the suction pipe can be adjusted according to the underwater depth, the adaptability is strong, meanwhile, the scissor mechanism is driven to move by extending or shortening the hydraulic cylinder, the scissor mechanism drives the suction pipe to move through the mounting sleeve, the distance between adjacent suction pipes is adjusted, so that the suction unit is suitable for water channels with different widths, the sufficient dredging is ensured, and the working efficiency is improved;
2. the stirring device is provided with a stirring unit, the stirring unit comprises a first waterproof motor, a rotary disc, a swing rod, a stirring rake, a connecting sleeve, a pin shaft, a movable block, a screw rod and a second waterproof motor, the first waterproof motor drives the rotary disc to rotate, the rotary disc drives a cylindrical pin to revolve, the cylindrical pin drives the swing rod to swing, and the swing rod drives the stirring rake to swing, so that on one hand, silt deposited at the bottom of the water can be stirred, the silt pump can suck conveniently, on the other hand, the stirring rake can pull sundries such as stones, resin, plastic bags and the like in the silt to two sides, the suction pipe is prevented from being blocked, the suction efficiency is improved, the fastening screw between the swing rod and the connecting sleeve can be loosened, then the second waterproof motor is started, the second waterproof motor drives a threaded rod to rotate, the threaded rod drives the movable block to move, the, to accommodate canals of different widths.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a scissors mechanism in a first embodiment of the present invention.
Fig. 3 is a three-dimensional view of an agitating unit in a first embodiment of the present invention.
Fig. 4 is a schematic structural diagram of a second embodiment of the present invention.
Notations for reference numerals: 1-frame body, 2-filter screen, 3-drain pipe, 4-first hose, 5-first motor, 6-belt transmission mechanism, 7-lead screw, 8-sludge pump, 9-mounting plate, 10-second hose, 11-hydraulic cylinder, 12-scissor mechanism, 13-mounting sleeve, 14-suction pipe, 15-protective net, 16-second waterproof motor, 17-movable block, 18-first waterproof motor, 19-rotary table, 20-oscillating bar, 21-stirring rake, 22-connecting sleeve, 23-pin shaft and 24-vibration exciter.
Detailed Description
The present invention will be described in detail with reference to the following embodiments, wherein like or similar elements are designated by like reference numerals throughout the several views, and wherein the shape, thickness or height of the various elements may be expanded or reduced in practice. The examples are given solely for the purpose of illustration and are not intended to limit the scope of the invention. Any obvious modifications or variations can be made to the present invention without departing from the spirit or scope of the present invention.
Example 1
Referring to fig. 1 to 3, in an embodiment of the present invention, a dredging device for hydraulic engineering is installed on a ship, and includes a frame 1 for containing sludge, a suction unit for sucking sludge, and a stirring unit for stirring sludge, a filter screen 2 for filtering is fixedly installed in the frame 1, a drain pipe 3 for draining water is installed at the bottom of the frame 1, the suction unit includes a suction pipe 14, a sludge pump 8, an installation plate 9, a hydraulic cylinder 11, a scissor mechanism 12, and an installation sleeve 13, the installation plate 9 is installed on a side wall of the frame 1 through a lifting mechanism, the installation plate 9 is preferably composed of an inclined plate section and horizontal plate sections installed at two ends of the inclined plate section, in this embodiment, the lifting mechanism includes a first motor 5, a screw rod 7, and a belt transmission mechanism 6, the screw rods 7 are two and are symmetrically installed on the side wall of the frame 1, the first motor 5 is in driving connection with one of two lead screws 7, in this embodiment, the first motor 5 is preferably fixedly connected with the top ends of the two lead screws 7 through a coupling, the tops of the two lead screws 7 are connected through a belt transmission mechanism 6, an internal thread hole for the lead screw 7 to pass through and be connected is formed in the mounting plate 9, the end portion, close to the frame body 1, of the mounting plate 9 is in sliding connection with the side wall of the frame body 1, in this embodiment, a sliding block is fixed at the end portion of the mounting plate 9, a sliding groove for the sliding connection of the sliding block is formed in the side wall of the frame body 1, a scissors mechanism 12 is installed at the lower portion of the mounting plate 9, a hinge point at the top of the scissors mechanism 12 is hinged with the end portion of a telescopic rod of a hydraulic cylinder 11, a hinge point corresponding to the bottom of the scissors mechanism 12 is hinged with the mounting plate 9, the hydraulic cylinder, the mounting sleeve 13 is detachably provided with a suction pipe 14, the suction pipe 14 is preferably connected with the mounting sleeve 13 through screws, the top end of the suction pipe 14 is connected with a second hose 10, the other end of the second hose 10 is connected with an input port of a sludge pump 8, an output port of the sludge pump 8 is connected with a first hose 4, the other end of the first hose 4 extends into the frame body 1, a protective screen 15 is arranged in the suction port of the suction pipe 14 to prevent impurities such as stones, branches, plastic bags and the like from being sucked into the sludge pump 8 to block the suction pipe 14 and damage the sludge pump 8, when the sludge pump works, the first motor 5 is started, the first motor 5 drives two screw rods 7 to synchronously rotate through a belt transmission mechanism 6, the screw rods 7 drive the mounting plate 9 to ascend and descend, the depth of the suction pipe 14 can be adjusted according to the underwater depth, the adaptability is strong, and meanwhile, the hydraulic cylinder 11 is extended or shortened to drive, the scissor mechanism 12 drives the suction pipes 14 to move through the mounting sleeve 13, and the distance between the adjacent suction pipes 14 is adjusted to adapt to water channels with different widths, so that sufficient dredging is ensured, and the working efficiency is improved;
further, the stirring unit comprises a first waterproof motor 18, a rotary table 19, a swing rod 20, a stirring rake 21, a connecting sleeve 22, a pin shaft 23, a movable block 17, a screw rod 7 and a second waterproof motor 16, the first waterproof motor 18 is fixedly arranged on the mounting plate 9, the rotary table 19 is fixed at the bottom end of an output shaft of the first waterproof motor 18, the swing rod 20 is connected below the rotary table 19 in a matching manner, the stirring rake 21 is fixed at the bottom of the swing rod 20, a cylindrical pin is fixed on an outer ring of the lower end surface of the rotary table 19, a through groove for the cylindrical pin to be inserted and slide is formed in the swing rod 20, the connecting sleeve 22 is movably sleeved at one end of the swing rod 20, a fastening screw for positioning is connected between the connecting sleeve 22 and the swing rod 20, the pin shaft 23 is rotatably arranged at the top of the connecting sleeve 22, the top end of the pin shaft 23 is fixedly connected with the, in this embodiment, a guide block is fixed on the movable block 17, a guide groove for the guide block to slide is formed on the mounting plate 9, a threaded rod is arranged on the movable block 17 in a penetrating manner, the threaded rod is in threaded connection with the movable block 17, the second waterproof motor 16 drives the threaded rod to be connected, when the installation structure is in operation, the first waterproof motor 18 is started, the first waterproof motor 18 drives the rotary table 19 to rotate, the rotary table 19 drives the cylindrical pin to revolve, the cylindrical pin drives the oscillating rod 20 to oscillate, the oscillating rod 20 drives the stirring rake 21 to oscillate, on one hand, silt deposited at the bottom of the water can be stirred, and the silt pump 8 can suck the silt conveniently, on the other hand, the stirring rake 21 can stir sundries such as stones, resins, plastic bags and the like in the silt to two sides, so as to avoid blocking the suction pipe 14 and improve the suction efficiency, the threaded rod 16 can be loosened by screwing the fastening screw between the oscillating rod 20, the threaded rod drives the movable block 17 to move, and the movable block 17 drives the connecting sleeve 22 to move through the pin shaft 23, so that the swing amplitude of the swing rod 20 can be adjusted to adapt to water channels with different widths.
Example 2
Referring to fig. 4, the embodiment of the present invention is different from embodiment 1 in that vibration exciters 24 are installed on both sides of the bottom of the filter screen 2 to improve the filtering efficiency.
The working principle of the invention is as follows: when the sludge pump works, sludge is sucked into the second hose 10 and the first hose 4 through the suction pipe 14 and then sent into the frame body 1 to be collected, the first motor 5 can be started, the first motor 5 drives the two screw rods 7 to synchronously rotate through the belt transmission mechanism 6, the screw rods 7 drive the mounting plate 9 to ascend and descend, the depth of the suction pipe 14 can be adjusted according to the underwater depth, the adaptability is high, meanwhile, the hydraulic cylinder 11 extends or shortens to drive the scissor mechanism 12 to move, the scissor mechanism 12 drives the suction pipe 14 to move through the mounting sleeve 13, and the distance between every two adjacent suction pipes 14 is adjusted to adapt to water channels with different widths, so that sufficient dredging is guaranteed, and the working efficiency is improved; the first waterproof motor 18 is started, the first waterproof motor 18 drives the rotary disc 19 to rotate, the rotary disc 19 drives the cylindrical pin to revolve, the cylindrical pin drives the swing rod 20 to swing, the swing rod 20 drives the stirring rake 21 to swing, on one hand, silt deposited at the bottom of the water can be stirred, and the silt pump 8 can suck conveniently, on the other hand, the stirring rake 21 can stir sundries such as stones, resin and plastic bags in the silt to the two sides, the suction pipe 14 is prevented from being blocked, and the suction efficiency is improved.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (8)

1. The utility model provides a sediment removal device for hydraulic engineering, is including framework (1) that is used for splendid attire silt, the stirring unit that is used for inhaling the unit of inhaling of silt and is used for stirring silt, framework (1) internal fixation installs and is used for filterable filter screen (2), framework (1) bottom is equipped with drain pipe (3) that are used for the drainage, its characterized in that, inhale the unit including inhaling pipe (14), silt pump (8), mounting panel (9), pneumatic cylinder (11), scissor mechanism (12) and installation cover (13), mounting panel (9) are installed on framework (1) lateral wall through elevating system, and the tip that mounting panel (9) are close to framework (1) and framework (1) lateral wall sliding connection, scissor mechanism (12) is installed to mounting panel (9) lower part, a hinge point at scissor mechanism (12) top is articulated with the telescopic link tip of pneumatic cylinder (11), the corresponding hinge point in scissors mechanism (12) bottom is articulated with mounting panel (9), pneumatic cylinder (11) fixed mounting is on mounting panel (9), a bottom fixed mounting in the mutual articulated two scissors poles of tip of scissors mechanism (12) has installation cover (13), demountable installation has suction tube (14) on installation cover (13), suction tube (14) top is connected with second hose (10), and the second hose (10) other end is connected with the input port of silt pump (8), and the delivery outlet of silt pump (8) is connected with first hose (4), and first hose (4) other end extends to in framework (1).
2. A dredging device for water conservancy projects according to claim 1, wherein the mounting plate (9) is composed of an inclined plate section and horizontal plate sections arranged at both ends of the inclined plate section.
3. The dredging device for the water conservancy project according to claim 1, wherein the lifting mechanism comprises a first motor (5), two screw rods (7) and a belt transmission mechanism (6), the screw rods (7) are symmetrically and rotatably arranged on the side wall of the frame body (1), the first motor (5) is driven to be connected with one of the two screw rods (7), the tops of the two screw rods (7) are connected through the belt transmission mechanism (6), and an inner threaded hole for the screw rod (7) to penetrate and be connected is formed in the mounting plate (9).
4. The dredging device for the water conservancy project according to claim 1, wherein a sliding block is fixed at the end of the mounting plate (9), and a sliding groove for the sliding connection of the sliding block is formed in the side wall of the frame body (1).
5. The dredging device for water conservancy project according to claim 1, wherein a protective screen (15) is installed in a suction port of the suction pipe (14).
6. The dredging device for the water conservancy project according to any one of claims 1-5, wherein the stirring unit comprises a first waterproof motor (18), a rotary table (19), a swing rod (20), a stirring rake (21), a connecting sleeve (22), a pin shaft (23), a movable block (17), a screw rod (7) and a second waterproof motor (16), the first waterproof motor (18) is fixedly arranged on the mounting plate (9), the bottom end of an output shaft of the first waterproof motor (18) is fixedly provided with the rotary table (19), the lower part of the rotary table (19) is connected with the swing rod (20) in a matching manner, the bottom of the swing rod (20) is fixedly provided with the stirring rake (21), the outer ring of the lower end of the rotary table (19) is fixedly provided with a cylindrical pin, the swing rod (20) is provided with a through groove for the cylindrical pin to insert and slide, one end of the swing rod (20) is movably sleeved with the connecting sleeve (, be connected with the fastening screw who is used for the location between adapter sleeve (22) and swinging arms (20), adapter sleeve (22) top is rotated and is installed round pin axle (23), round pin axle (23) top and movable block (17) fixed connection, and mounting panel (9) are run through and sliding connection with it to movable block (17), wear to be equipped with the threaded rod on movable block (17), threaded rod and movable block (17) threaded connection, second waterproof motor (16) drive connecting threaded rod.
7. The dredging device for the water conservancy project according to claim 6, wherein a guide block is fixed on the movable block (17), and a guide groove for the guide block to slide is formed in the mounting plate (9).
8. The dredging device for the water conservancy project according to claim 1, wherein vibration exciters (24) are installed on two sides of the bottom of the filter screen (2).
CN202010991289.3A 2020-09-20 2020-09-20 Dredging device for hydraulic engineering Active CN112127403B (en)

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Application Number Priority Date Filing Date Title
CN202010991289.3A CN112127403B (en) 2020-09-20 2020-09-20 Dredging device for hydraulic engineering

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Application Number Priority Date Filing Date Title
CN202010991289.3A CN112127403B (en) 2020-09-20 2020-09-20 Dredging device for hydraulic engineering

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CN112127403A true CN112127403A (en) 2020-12-25
CN112127403B CN112127403B (en) 2022-08-23

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113026497A (en) * 2021-04-02 2021-06-25 夏明辉 Pavement maintenance device for highway construction and application method thereof
CN115506473A (en) * 2022-08-23 2022-12-23 中安智创环保科技有限公司 Scissor type mud scraper assembly and mud scraper for bottom mud of sewage channel
CN117605114A (en) * 2024-01-22 2024-02-27 安徽农业大学 Agricultural ditch pollutant cleaning device

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Publication number Priority date Publication date Assignee Title
GB736559A (en) * 1953-05-19 1955-09-07 Baker & Hunt Ltd Improvements in or relating to machines for trimming hedges, banks, ditches and the like
GB1277401A (en) * 1968-08-26 1972-06-14 Paul Crispin London Improvements in dredging
JP2005188057A (en) * 2003-12-24 2005-07-14 Toyo Constr Co Ltd Dredging device and dredging method
CN205772297U (en) * 2016-05-30 2016-12-07 浙江华龙机械股份有限公司 Defeated paper feeding mechanism
CN209040194U (en) * 2018-11-14 2019-06-28 刘田华 A kind of Accrete clearing device for hydraulic engineering
CN111034699A (en) * 2019-12-27 2020-04-21 石家庄市农林科学研究院 Adjustable plant protection machine for intercropping plants
CN111318062A (en) * 2020-03-02 2020-06-23 祝洪芬 River sewage treatment device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB736559A (en) * 1953-05-19 1955-09-07 Baker & Hunt Ltd Improvements in or relating to machines for trimming hedges, banks, ditches and the like
GB1277401A (en) * 1968-08-26 1972-06-14 Paul Crispin London Improvements in dredging
JP2005188057A (en) * 2003-12-24 2005-07-14 Toyo Constr Co Ltd Dredging device and dredging method
CN205772297U (en) * 2016-05-30 2016-12-07 浙江华龙机械股份有限公司 Defeated paper feeding mechanism
CN209040194U (en) * 2018-11-14 2019-06-28 刘田华 A kind of Accrete clearing device for hydraulic engineering
CN111034699A (en) * 2019-12-27 2020-04-21 石家庄市农林科学研究院 Adjustable plant protection machine for intercropping plants
CN111318062A (en) * 2020-03-02 2020-06-23 祝洪芬 River sewage treatment device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113026497A (en) * 2021-04-02 2021-06-25 夏明辉 Pavement maintenance device for highway construction and application method thereof
CN115506473A (en) * 2022-08-23 2022-12-23 中安智创环保科技有限公司 Scissor type mud scraper assembly and mud scraper for bottom mud of sewage channel
CN117605114A (en) * 2024-01-22 2024-02-27 安徽农业大学 Agricultural ditch pollutant cleaning device
CN117605114B (en) * 2024-01-22 2024-03-22 安徽农业大学 Agricultural ditch pollutant cleaning device

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