CN113175016A - Composite underwater power dredging drag harrow - Google Patents
Composite underwater power dredging drag harrow Download PDFInfo
- Publication number
- CN113175016A CN113175016A CN202110451092.5A CN202110451092A CN113175016A CN 113175016 A CN113175016 A CN 113175016A CN 202110451092 A CN202110451092 A CN 202110451092A CN 113175016 A CN113175016 A CN 113175016A
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- China
- Prior art keywords
- harrow
- power
- plate
- pair
- dredging
- Prior art date
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Links
- 239000002131 composite material Substances 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 49
- 230000000712 assembly Effects 0.000 claims description 10
- 238000000429 assembly Methods 0.000 claims description 10
- 150000001875 compounds Chemical class 0.000 claims 1
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000013049 sediment Substances 0.000 abstract 1
- 239000002689 soil Substances 0.000 description 16
- 238000000034 method Methods 0.000 description 8
- 239000010802 sludge Substances 0.000 description 8
- 239000007921 spray Substances 0.000 description 6
- 239000000203 mixture Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000725 suspension Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 230000002146 bilateral effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000011268 mixed slurry Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F3/00—Dredgers; Soil-shifting machines
- E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
- E02F3/88—Dredgers; Soil-shifting machines mechanically-driven with arrangements acting by a sucking or forcing effect, e.g. suction dredgers
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F5/00—Dredgers or soil-shifting machines for special purposes
- E02F5/28—Dredgers or soil-shifting machines for special purposes for cleaning watercourses or other ways
Abstract
A composite underwater power dredging drag harrow. Relates to the field of water conservancy environmental protection, in particular to a mechanical disturbance type dredging and dredging harrow which can be used in seaside tidal estuary, sediment-rich river and channel of a muddy coast. The composite underwater power dredging drag harrow has the advantages of simple structure, reliable layout and efficiency improvement. Including the harrow frame, still including fixed harrow, power harrow and the gas tank that sets gradually around including, the harrow frame includes a pair of parallel arrangement's curb plate, fixed harrow fixed connection is between a pair of curb plate, power harrow swing joint is between a pair of curb plate, gas tank fixed connection is between a pair of curb plate. The power harrow comprises a motor mounting plate, vertical plates are symmetrically arranged at two ends of the motor mounting plate, a limiting shaft is arranged at the upper part of each vertical plate, a rotating shaft is arranged at the lower part of each vertical plate, an arc-shaped hole and a rotating hole are formed in each side plate, the limiting shaft is located in the arc-shaped hole, and the rotating shaft is located in the rotating hole. The invention is convenient to install and reliable in dredging.
Description
Technical Field
The invention relates to the field of water conservancy environmental protection, in particular to a mechanical disturbance type dredging and dredging harrow which can be used in seaside tidal estuary, sediment-laden rivers and navigation channels of muddy coast.
Background
At present, at the tidal estuary of the muddy coast, a large amount of silt is suspended by the rising seawater and is carried to flow upward, silt which falls off continuously along the way is accumulated in the riverbed, and the ebb water flow cannot restart the silt which falls off to bring the silt back to the sea again, so that the silt in the riverway is deposited. The existing dredging method mainly comprises two methods: firstly, a suction dredging method is implemented by adopting a cutter suction dredging device; and secondly, a high-pressure water spray jet rake is adopted to implement the disturbance type dredging method. The first method is slow in construction progress and high in construction cost due to the tide effect; the second method is difficult to restart hardened soil with relatively long silt fall time, so that the working efficiency is low.
The application numbers of the present applicant in the 2009.11.17 application are: 200920255492.3 entitled "a composite water spray and air seeping drag harrow", which provides a simple and effective drag harrow, however, the structure is complex and the layout is not reasonable.
Disclosure of Invention
Aiming at the problems, the invention provides the composite underwater power dredging drag harrow which has simple structure, reliable layout and improved efficiency.
The technical scheme of the invention is as follows: including the harrow frame, still including fixed harrow, power harrow and the gas tank that sets gradually around including, the harrow frame includes a pair of parallel arrangement's curb plate, fixed harrow fixed connection is between a pair of curb plate, power harrow swing joint is between a pair of curb plate, gas tank fixed connection is between a pair of curb plate.
The power harrow comprises a motor mounting plate,
vertical plates are symmetrically arranged at two ends of the motor mounting plate, a limiting shaft is arranged at the upper part of each vertical plate, a rotating shaft is arranged at the lower part of each vertical plate, an arc-shaped hole and a rotating hole are formed in each side plate, the limiting shaft is located in the arc-shaped hole, and the rotating shaft is located in the rotating hole;
2n hydraulic motors are arranged on the motor mounting plate, n is more than or equal to 1 and is an integer; the hydraulic motor is used for driving the reamer assembly.
The reamer assembly comprises a reamer body and blades, the reamer body is spindle-shaped, spiral blades are uniformly distributed on the surface of the reamer body, and the spiral blades are in an intermittent mode;
the blade is bolted to the helical blade.
When n is 1, the rotation directions of blades in the reamer assemblies driven by the two hydraulic motors are opposite;
when n is more than or equal to 2, the rotating directions of the blades in the reamer assemblies driven by the n hydraulic motors on one side are the same, the rotating directions of the blades in the reamer assemblies driven by the n hydraulic motors on the other side are the same, and the rotating directions of the blades on the two sides are opposite.
The pneumatic water tank comprises an air inflation tank and a water filling tank which are vertically separated, wherein a plurality of air nozzles are arranged on one side of the air inflation tank facing the power rake, and a plurality of water nozzles are arranged on one side of the water filling tank facing the power rake.
Also comprises a circular arc-shaped guide plate which is connected between the pair of side plates,
the guide plate is arranged above the fixed rake and is positioned in front of the power rake.
The side plate is arc-shaped, a sled-shaped sliding support is arranged at the bottom of the side plate, and the side plate is perpendicular to the sliding support.
The fixed harrow comprises a connecting rod and harrow teeth arranged on the connecting rod, the harrow teeth extend out of the bottom surface of the sliding support, and the end part of the connecting rod is connected between the sliding support and the side plate.
The front ends of the pair of side plates are respectively provided with a traction hole.
The hanging rod is connected between the pair of side plates and located in front of the fixed rake, and lifting lugs are arranged on the hanging rod.
In the working process, the rake frame comprises a pair of side plates, and the fixed rake, the power rake and the air water tank are sequentially arranged in the rake frame from front to back, so that the rake frame and the pair of side plates are conveniently formed into a whole, the processing is convenient, and the strength is improved.
The fixed rake, the power rake and the air water tank are arranged in sequence, so that the layout is reliable; when the ship sails, rake teeth on the fixed rake cut into soil and lift up the cut soil; when the fixed harrow is difficult to cut in hardened soil, the power harrow is started to carry out forced cutting; the gas-water tank can spray water and jet air to further break sludge, and the mud-water mixture can be suspended in the water body for a longer time under the action of gas by jetting air, and finally, the sludge is removed further along with the movement of the ebb-damp water, so that the sludge is reliably removed.
The invention is convenient to install and reliable in dredging.
Drawings
Figure 1 is a schematic view of the structure of the present invention,
figure 2 is a top view of figure 1,
figure 3 is a schematic perspective view of figure 1,
figure 4 is a schematic view of the structure of the rake frame,
figure 5 is a schematic perspective view of figure 4,
figure 6 is a schematic view of the structure of the power rake,
figure 7 is a schematic perspective view of figure 6,
FIG. 8 is a schematic structural view of a reamer assembly;
in the figure 1 is shown a rake frame,
2 is a fixed harrow, 21 is a connecting rod, 22 is a harrow tooth,
3 is a power harrow, 31 is a motor mounting plate, 32 is a vertical plate, 33 is a limit shaft, 34 is a rotating shaft,
4 is a gas-water tank, 41 is an inflation tank, 42 is a water-filling tank, 43 is an air tap, 44 is an air tap,
5 is a side plate, 51 is an arc-shaped hole, 52 is a rotary hole,
the reference numeral 6 denotes a hydraulic motor,
7 is a reamer assembly, 71 is a cutter body, 72 is a blade, 73 is a helical blade,
8 is a guide plate, 9 is a sliding support, 10 is a traction hole, 11 is a suspension rod, 12 is a lifting lug, and 13 is a shield.
Detailed Description
The invention is shown in figures 1-8, and comprises a rake frame 1, and further comprises a fixed rake 2, a power rake 3 and an air water tank 4 which are sequentially arranged from front to back, wherein the rake frame comprises a pair of side plates 5 which are arranged in parallel, the fixed rake 2 is fixedly connected between the pair of side plates, the power rake 3 is movably connected between the pair of side plates, and the air water tank 4 is fixedly connected between the pair of side plates.
In the working process, the rake frame comprises a pair of side plates, and the fixed rake, the power rake and the air water tank are sequentially arranged in the rake frame from front to back, so that the rake frame and the pair of side plates are conveniently formed into a whole, the processing is convenient, and the strength is improved.
The fixed rake, the power rake and the air water tank are arranged in sequence, so that the layout is reliable; when the ship sails, rake teeth on the fixed rake cut into soil and lift up the cut soil; when the fixed harrow is difficult to cut in hardened soil, the power harrow is started to carry out forced cutting; the gas-water tank can spray water and jet air to further break sludge, and the mud-water mixture can be suspended in the water body for a longer time under the action of gas by jetting air, and finally, the sludge is removed further along with the movement of the ebb-damp water, so that the sludge is reliably removed.
The power rake 3 includes a motor mounting plate 31,
2n hydraulic motors 6 are arranged on the motor mounting plate, wherein n is more than or equal to 1 and is an integer; the hydraulic motor is used for driving the reamer assembly.
When the power harrow acts, on one hand, the reamer assembly is driven by the hydraulic motor to forcibly cut hardened soil; on the other hand, because set up pivot and spacing axle on the riser of motor mounting panel both sides respectively, the pivot is located the pivot, and spacing axle is located the arc hole, and the motor mounting panel of being convenient for uses the pivot to rotate as the center, and the arc hole is the free swing action of limit, improves the adaptability of cutting.
The automatic profiling cutting to the ground is realized, and the blade can be automatically lifted and actively avoided when encountering an underwater obstacle, so that the blade is prevented from being damaged.
The reamer assembly 7 comprises a cutter body 71 and blades 72, the cutter body is in a spindle shape, spiral blades 73 are uniformly distributed on the surface of the cutter body, and the spiral blades are in an intermittent type;
the blade 72 is bolted to the helical blade.
The cutter body is in a spindle-shaped structure, and spiral blades are uniformly distributed on the surface of the cutter body, so that the cutting reliability is improved; the blade is arranged to be connected to the blade, so that the blade is convenient to disassemble, assemble and replace.
When n is 1, the rotation directions of blades in the reamer assemblies driven by the two hydraulic motors are opposite;
when n is more than or equal to 2, the rotating directions of the blades in the reamer assemblies driven by the n hydraulic motors on one side are the same, the rotating directions of the blades in the reamer assemblies driven by the n hydraulic motors on the other side are the same, and the rotating directions of the blades on the two sides are opposite.
Thus, the directions of rotation are opposite to each other to cancel out the centrifugal force of rotation thereof.
A detachable arc-shaped motor shield 13 is also mounted on the motor mounting plate for protecting the hydraulic motor.
In the figure, four circular mounting holes are formed in the motor mounting plate and used for positioning and mounting four hydraulic motors, the hydraulic motors are connected and drive four reamer assemblies, and the spiral blades on the cutter body are of a bilateral symmetry structure, namely, two blades are left-handed and two blades are right-handed, and the rotation directions are opposite.
The two ends of the motor mounting plate are welded with flat plate type connecting plates (namely vertical plates), the upper parts of the connecting plates are fixedly provided with limiting shafts, and the lower parts of the connecting plates are fixedly provided with rotating shafts. The reamer assembly is installed in the shaft holes in the two sides of the rake frame through the rotating shaft, and the end part of the rotating shaft is provided with a limiting check ring and a limiting bolt for preventing the axial displacement of the reamer assembly. The limiting shaft of the reamer assembly is sleeved in the arc-shaped holes at two sides of the harrow frame in an empty mode, so that the reamer assembly can rotate by taking the rotating shaft as the center and can freely swing by taking the arc-shaped holes as the limit.
The gas-water tank 4 comprises an air inflation tank 41 and a water filling tank 42 which are vertically separated, wherein one side of the air inflation tank facing the power rake is provided with a plurality of air nozzles 43, and one side of the water filling tank facing the power rake is provided with a plurality of water nozzles 44.
The gas-water tank is of a box-shaped structure and is welded with the rake frame into a whole; the upper water nozzle is used for fully mixing the crushed muddy water mixture and prolonging the suspension time of the crushed muddy water mixture in the water body, and the lower water nozzle is used for fully crushing the cutting sludge.
The two can act simultaneously or work independently, and adapt to different working condition requirements.
When the inflation box is applied, the inflation box works by being connected with an air compressor; when the water filling tank is applied, the water filling tank works by being connected with a water pump.
Also comprises a circular arc-shaped guide plate 8 which is connected between the pair of side plates,
the guide plate is arranged above the fixed rake and is positioned in front of the power rake.
Slurry formed after the fixed rake cuts soil is further lifted and suspended through the arc-shaped guide plate, and the suspension time is prolonged.
The side plate is arc-shaped, the bottom of the side plate is provided with a sled-shaped sliding support 9, and the side plate is perpendicular to the sliding support.
Thus, the whole rake frame is effectively prevented from sinking and the dragging resistance is reduced.
The fixed harrow 2 comprises a connecting rod 21 and harrow teeth 22 arranged on the connecting rod, the harrow teeth extend out of the bottom surface of the sliding support, and the end part of the connecting rod is connected between the sliding support and the side plate.
Therefore, the rake teeth are lower than the sliding support, and when the ship sails, the rake teeth cut into soil and lift up the soil after cutting; the connecting rod is connected between the sliding support and the side plate, so that the connecting strength and the reliability are improved.
The front ends of the pair of side plates are respectively provided with a traction hole 10.
Therefore, the traction hole at the front part is connected with the ship body through a steel wire rope, and the whole dredging drag harrow is dragged to move forwards through the navigation power of the ship.
The fixing device also comprises a hanging rod 11 which is connected between the pair of side plates and positioned in front of the fixing rake, and a lifting lug 12 is arranged on the hanging rod.
When the dredging drag harrow does not work, the dredging drag harrow is lifted and hung at the tail part of the ship body by a winch on the ship, and a steel wire rope on the winch is connected with a lifting lug.
When the dredging drag harrow works, the dredging drag harrow is hoisted to a riverbed through a winch and is located on the riverbed by self weight, and the dredging drag harrow mainly depends on skids (namely sliding supports) at the bottoms of two sides of a harrow frame to be contacted with the riverbed. When the ship sails forwards, the whole dredging drag harrow is driven to slide forwards by a traction steel wire rope fixed on the ship.
The rake teeth of the fixed rake on the dredging drag rake are lower than the skid, and when the ship sails, the rake teeth cut into soil and lift up the cut soil. The slurry formed after cutting is further lifted and suspended by the arc-shaped guide plate at the rear part.
When the rake teeth are difficult to cut due to hardened soil, the power rake is started. The rotation directions of the blades on the reamer assembly are opposite in pairs so as to mutually offset the rotation centrifugal force of the blades. And the reamer assembly carries out forced cutting on the hardened soil.
The reamer assembly takes the rotating shaft as the center and takes the arc-shaped hole of the side plate of the harrow frame as the limit, and can freely rotate and swing. The automatic profiling cutting machine can automatically lift and actively avoid when encountering underwater obstacles, and prevent the cutter head from being damaged.
The rear part of the reamer assembly is also provided with a water nozzle and an air nozzle, the water nozzle sprays high-pressure water flow to impact and crush hardened soil, and large sludge cut by the reamer can be crushed to form small granular substances which are fully mixed with a water body. Meanwhile, the air nozzle sprays compressed air, so that the mixed slurry can be suspended in a water body for a longer time under the supporting of the air, and can move farther along with the ebb water, thereby realizing the purpose of dredging.
The disclosure of the present application also includes the following points:
(1) the drawings of the embodiments disclosed herein only relate to the structures related to the embodiments disclosed herein, and other structures can refer to general designs;
(2) in case of conflict, the embodiments and features of the embodiments disclosed in this application can be combined with each other to arrive at new embodiments;
the above embodiments are only embodiments disclosed in the present disclosure, but the scope of the disclosure is not limited thereto, and the scope of the disclosure should be determined by the scope of the claims.
Claims (10)
1. The utility model provides a compound power desilting drag harrow under water, includes the harrow frame, its characterized in that still includes fixed harrow, power harrow and the gas tank that sets gradually around, the harrow frame includes a pair of parallel arrangement's curb plate, fixed harrow fixed connection is between a pair of curb plate, power harrow swing joint is between a pair of curb plate, gas tank fixed connection is between a pair of curb plate.
2. The composite underwater power dredging harrow of claim 1, wherein the power harrow comprises a motor mounting plate,
vertical plates are symmetrically arranged at two ends of the motor mounting plate, a limiting shaft is arranged at the upper part of each vertical plate, a rotating shaft is arranged at the lower part of each vertical plate, an arc-shaped hole and a rotating hole are formed in each side plate, the limiting shaft is located in the arc-shaped hole, and the rotating shaft is located in the rotating hole;
2n hydraulic motors are arranged on the motor mounting plate, n is more than or equal to 1 and is an integer; the hydraulic motor is used for driving the reamer assembly.
3. The composite underwater power dredging harrow of claim 2, wherein the reamer assembly comprises a cutter body and blades, the cutter body is in a spindle shape, spiral blades are uniformly distributed on the surface of the cutter body, and the spiral blades are in an intermittent type;
the blade is bolted to the helical blade.
4. The composite underwater power dredging harrow of claim 3, wherein when n is 1, the rotation directions of blades in the reamer assemblies driven by the two hydraulic motors are opposite;
when n is more than or equal to 2, the rotating directions of the blades in the reamer assemblies driven by the n hydraulic motors on one side are the same, the rotating directions of the blades in the reamer assemblies driven by the n hydraulic motors on the other side are the same, and the rotating directions of the blades on the two sides are opposite.
5. A combined underwater power dredging harrow as claimed in any one of claims 1 to 4, wherein the gas tank comprises an air tank and a water filling tank which are separated from each other up and down, the side of the air tank facing the power harrow is provided with a plurality of gas nozzles, and the side of the water filling tank facing the power harrow is provided with a plurality of water nozzles.
6. The composite underwater power dredging harrow of claim 5, further comprising a circular arc-shaped guide plate connected between a pair of side plates,
the guide plate is arranged above the fixed rake and is positioned in front of the power rake.
7. The composite underwater power dredging harrow of claim 1, wherein the side plate is arc-shaped, the bottom of the side plate is provided with a sled-shaped sliding support, and the side plate is perpendicular to the sliding support.
8. The composite underwater power dredging harrow of claim 7, wherein the fixed harrow comprises a connecting rod and harrow teeth arranged on the connecting rod, the harrow teeth extend out of the bottom surface of the sliding support, and the end part of the connecting rod is connected between the sliding support and the side plate.
9. The composite underwater power dredging harrow of claim 1, wherein the front ends of the pair of side plates are respectively provided with a traction hole.
10. The composite underwater power dredging harrow of claim 1 or 9, further comprising a suspender, wherein the suspender is connected between the pair of side plates and positioned in front of the fixed harrow, and the suspender is provided with a lifting lug.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110451092.5A CN113175016A (en) | 2021-04-26 | 2021-04-26 | Composite underwater power dredging drag harrow |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110451092.5A CN113175016A (en) | 2021-04-26 | 2021-04-26 | Composite underwater power dredging drag harrow |
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| Publication Number | Publication Date |
|---|---|
| CN113175016A true CN113175016A (en) | 2021-07-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110451092.5A Pending CN113175016A (en) | 2021-04-26 | 2021-04-26 | Composite underwater power dredging drag harrow |
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| Country | Link |
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| CN (1) | CN113175016A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837119A (en) * | 2022-05-07 | 2022-08-02 | 清华大学 | Suspended river control sand stirring boat and suspended river control system |
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| CN111749296A (en) * | 2020-07-13 | 2020-10-09 | 中交疏浚技术装备国家工程研究中心有限公司 | Trailing suction dredger with hobbing cutter rake head driven by outer rotor motor |
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2021
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114837119A (en) * | 2022-05-07 | 2022-08-02 | 清华大学 | Suspended river control sand stirring boat and suspended river control system |
| WO2023217006A1 (en) * | 2022-05-07 | 2023-11-16 | 清华大学 | Hanging river regulation sand dredger and hanging river regulation system |
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Application publication date: 20210727 |