CN104047322B - A kind of twin-bucket wheel-type mud-suction dredging machine under water - Google Patents
A kind of twin-bucket wheel-type mud-suction dredging machine under water Download PDFInfo
- Publication number
- CN104047322B CN104047322B CN201410287153.9A CN201410287153A CN104047322B CN 104047322 B CN104047322 B CN 104047322B CN 201410287153 A CN201410287153 A CN 201410287153A CN 104047322 B CN104047322 B CN 104047322B
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- hull
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- twin
- bucket wheel
- frame
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Classifications
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- 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
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- 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
- E02F3/8858—Submerged units
- E02F3/8875—Submerged units pulled or pushed
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- 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
- E02F3/90—Component parts, e.g. arrangement or adaptation of pumps
- E02F3/92—Digging elements, e.g. suction heads
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/06—Floating substructures as supports
- E02F9/062—Advancing equipment, e.g. spuds for floating dredgers
Abstract
The present invention relates to a kind of twin-bucket wheel-type mud-suction dredging machine under water, including hull, operating room, row frame and desilting head, operating room is arranged at midship, desilting head is connected to hull head through row frame, also include positioner, step device, transverse moving left and right device and mud discharging device, positioner is arranged at head and the afterbody of hull, step device is arranged at the afterbody of hull, transverse moving left and right device is arranged at the head of hull, described desilting head is twin-bucket wheel-type desilting head, is provided with mud discharging device in each bucket wheel.
Description
Technical field
The present invention relates to underwater desilting field, in particular relate to one mud-suction dredging machine under water.
Background technology
The conventional silt remover in existing desilting field is generally that singly to cut with scissors suction, monobucket wheeled, it is disadvantageous in that and back-silts seriously, desilting is defective easily to cause secondary pollution to cause in construction waters, not stopping, river course narrow, cannot accomplish under the working condition that water level is low to be accurately positioned and clear up completely.
Summary of the invention
It is an object of the invention to provide that one can stable position, accurate stepping, desilting scope be big, desilting a kind of twin-bucket wheel-type mud-suction dredging machine under water completely.
The technical scheme that the present invention takes is:
A kind of twin-bucket wheel-type mud-suction dredging machine under water, including hull, operating room, propeller, row frame and desilting head, propeller is arranged at hull afterbody, operating room is arranged at midship, desilting head is connected to hull head through row frame, it is characterized in that, also include positioner, step device, transverse moving left and right device and mud discharging device, positioner is arranged at head and the afterbody of hull, step device is arranged at the afterbody of hull, transverse moving left and right device is arranged at the head of hull, and described desilting head is twin-bucket wheel-type desilting head, is provided with mud discharging device in each bucket wheel.
Further, described positioner includes guide pile unit three groups identical, often group guide pile unit all includes guide pile, hoist engine and the pile frame that falls, described pile frame is respectively provided with an anchor ear up and down, head is provided with a pulley, guide pile is serially connected with down in moving up and down state in the anchor ear of pile frame, and the steel cable on described hoist engine is connected through the pulley of the head of falling pile frame with guide pile bottom.
Further, described step device includes guide pile unit, trolley track frame, trolley body, reductor, first rope roll, second rope roll, steel wire rope and pulley, guide pile is connected to trolley body, it is arranged at the erection of the trolley track on hull and has upper and lower two-layer slide rail, trolley body is divided into upper and lower two-layer, every layer is equipped with four wheels, it is connected with the two-layer slide rail of trolley track respectively, described reductor and the second rope roll are connected with each other and are arranged on hull, second rope roll is wound with steel cable, steel cable is connected to trolley body by pulley, described first rope roll is wound with steel cable, one end of steel cable is connected with hull.
Further, described transverse moving left and right device includes a left side, right horizontal stake, A type frame, get rid of arm, left, right age of a draught animal clutch type hoist engine, middle hoist engine, row frame and reamer head, the described A type frame shape that leans forward is provided with on hull, head is connected to the both sides of the hull at its rear through steel cable, get rid of arm and be serially connected with on the centrage of A type frame in swinging state, the afterbody of the row frame that head is provided with reamer head is connected to hull head by cross connecting piece, the steel cable being arranged on the middle hoist engine of A type frame root winding is connected to the head of row frame through the pulley getting rid of arm head portion, get rid of arm head portion and be connected to the head of A type frame through steel cable, steel cable on described left age of a draught animal clutch type hoist engine is connected to the head of row frame through the pulley in left horizontal pile crown portion, steel cable on described right age of a draught animal clutch type hoist engine is connected to the head of row frame through the pulley in right horizontal pile crown portion.
Further, described mud discharging device includes into mud pipe, sludge pump and discharge pipeline, and the one end entering mud pipe is arranged in twin-bucket wheel-type desilting head, and the other end is connected to sludge pump, and one end of discharge pipeline connects sludge pump, and the other end connects spoil disposal place.
Further, in described three groups of guide pile unit, two groups are arranged at fore, and another group is arranged at stern.
Yet further, described hoist engine includes reductor, rope roll, steel cable, castellated type clutch and hydraulic driver, reductor is connected with rope roll, rope roll is wound with steel cable, jaw clutch is connected between reductor and rope roll, hydraulic driver is connected with jaw clutch, and described rope roll is provided with brake ribbon.
The present invention takes having the beneficial effect that of above technical scheme
1. positioner, takes the mode of triple dolphin mooring, and two guide pile unit are arranged at fore, and a guide pile unit is arranged at stern, positions relatively stable.Guide pile unit is provided with down pile frame, facilitates the lifting of guide pile and transfers, simple to operation.
2. step device, adopting chassis to coordinate with the guide pile being positioned outside hull, hoist engine pulls chassis to drive the movable of hull with guide pile for the strong point, utilizes position switch accurately to control the distance of hull stepping, make desilting region more comprehensive, it is to avoid desilting is incomplete.
3. transverse moving left and right device, the steel cable of two hoist engines is connected to row frame head through left and right transverse direction stake respectively, row frame is connected to hull head through crossed joint, two hoist engines are joined contract speed one and are received one and put steel cable, row frame is driven to move left and right desilting, traditional straight line desilting is become sector desilting, and work efficiency is higher.
4. mud discharging device, adopts dual circuit spoil disposal, respectively arranges a dredging tube in two bucket wheels of twin-bucket wheel-type desilting head, is that suction mud spoil disposal is more complete in work, it is prevented that to secondary pollution of water.
Accompanying drawing explanation
Fig. 1 is embodiments of the invention figure；
Fig. 2 is positioner embodiment figure；
Fig. 3 is step device embodiment figure；
Fig. 4 is transverse moving left and right device embodiment figure；
Fig. 5 is the embodiment figure of hoist engine.
In Fig. 1: hull 1, operating room 2, twin-bucket wheel-type desilting 3, positioner 4, step device 5, transverse moving left and right device 6.
In Fig. 2: guide pile 31, pile frame 32, pulley 33, hoist engine 34, rotational support body 35, latch 36, travel switch 37, anchor ear 38.
In Fig. 3: trolley track frame 51, guide pile 52, trolley body 53, first hoist 54, wheel 55, track 56, position switch 57, pulley 58, second hoist 59.
In Fig. 4: left horizontal stake 61, left age of a draught animal clutch type hoist engine 62, A type frame 63, swing arm 64, cross connecting piece 65, middle hoist engine 66, right age of a draught animal clutch type hoist engine 67, right horizontal stake 68, row frame 69.
In Fig. 5: reductor 71, jaw clutch 72, hydraulic driver 73, rope roll 74, brake ribbon 75.
Detailed description of the invention
Shown in Fig. 1, a kind of twin-bucket wheel-type mud-suction dredging machine under water includes hull 1, operating room 2, twin-bucket wheel-type desilting 3, positioner 4, step device 5 and transverse moving left and right device 6, operating room 2 is arranged at the middle part of hull 1, desilting 3 is connected to hull 1 head through row frame, in three groups of positioners 4 two groups are arranged at the head of hull 1 and one group of afterbody being arranged at hull 1, step device 5 is arranged at the afterbody of hull 1, transverse moving left and right device 6 is arranged at the head of hull 1, described desilting 3 is twin-bucket wheel-type desilting head, is provided with mud discharging device in each bucket wheel.
Shown in Fig. 2, positioner 4 includes guide pile unit three groups identical, often group guide pile unit all includes guide pile 31, pile frame 32, pulley 33, hoist engine 34, rotational support body 35, latch 36, travel switch 37 and anchor ear 38, guide pile 31 is serially connected with down in two with opening circular anchor ears 38 on pile frame 32, described pile frame 32 is on the edge that rotational support body 35 is installed on hull 1, in rotary state on hull 1, pile frame 32 both sides have latch 36 it to be connected with hull 1 respectively, pile frame 32 head that falls is provided with pulley 33, one end of the steel cable of hoist engine 34 is connected on guide pile 31 through pulley 33, hoist engine 34 is connected with the travel switch 37 on guide pile 31.
Shown in Fig. 3, step device includes trolley track frame 51, guide pile 52, trolley body 53, first hoist 54, wheel 55, track 56, position switch 57, pulley 58 and second hoist 59.Described trolley track frame 51 is fixed on the afterbody of hull 1, two set tracks 56 about being provided with point, the direction of track is parallel longitudinal with hull, the head of guide rail 56 and afterbody are provided with two position switch 57, position switch position-adjustable in orbit, fixing two parts connected of trolley body about 53 points, each part is equipped with four wheels 55, overlap guide rail with upper and lower two respectively to coordinate, the top of trolley body 53 is connected to first hoist 54, one end of the steel cable of described first hoist 54 is connected on the hull of trolley body 53 cephalad direction, trolley body 53 is also associated with guide pile 52, guide pile 52 can slide up and down motion on trolley body 53.The afterbody of trolley body 53 is connected to the second hoist 59 on the hull of trolley track frame 51 side through pulley 58.
Shown in Fig. 4, transverse moving left and right device includes left horizontal stake 61, left age of a draught animal clutch type hoist engine 62, A type frame 63, swing arm 64, cross connecting piece 65, middle hoist engine 66, right age of a draught animal clutch type hoist engine 67, right horizontal stake 68 and row frame 69.Being disposed with row frame 69 and A type frame 63 on the centrage of hull 1, described row frame 69 is connected to hull 1 head by cross connecting piece 65, and the head of row frame 69 is provided with twin-bucket wheel-type desilting 3；Described A type frame 63 shape that leans forward is arranged on hull, and its head is connected to the left and right sides of rear hull by two steel cables；Swing arm 64 is connected in A type frame 63 in swinging state by rotating mechanism, and the head of described swing arm 64 is connected with the head of A type frame 63 by steel cable.Described middle hoist engine 66 is positioned at the lower section of A type frame 63, and the steel cable on middle hoist engine 66 is connected to the head of row frame 69 by the pulley of swing arm 64 head；Left and right directions at hull 1 head is horizontally installed with respectively and stretches out left horizontal stake 61 outside hull and right horizontal stake 68, the head of described left and right horizontal stake is respectively arranged with pulley, pulley is all serially connected with steel cable, one end of described two steel cables is connected to the head of row frame 6, the other end is connected to the left age of a draught animal clutch type hoist engine 62 of hull both sides and right age of a draught animal clutch type hoist engine 67, and described left and right age of a draught animal clutch type hoist engine is mounted side by side in the left and right sides of hull 1.
Shown in Fig. 5, hoist engine includes reductor 71, jaw clutch 72, hydraulic driver 73, rope roll 74, brake ribbon 75.Reductor 71, through the coaxially connected rope roll 74 of jaw clutch 72, jaw clutch 72 is connected to hydraulic driver 73, and described hydraulic driver 73 connects electric switch, and rope roll 74 is provided with brake ribbon 75.
The operation principle of twin-bucket wheel-type mud-suction dredging machine under water is: moved by ship to desilting place, utilize pile frame 32 to be holded up by guide pile 31, unclamp steel cable, guide pile 31 inserts in water-bed mud because of the anchor ear 38 along the pile frame 32 of self gravitation edge, and pile frame 22 be fixed on hull 1 by the latch 36 of recycling pile frame 32 left and right sides.In like manner other two groups of guide pile unit are put in water, form triple dolphin mooring.
In the middle of starting, hoist engine 66 loosens steel cable, the row frame 69 being connected to hull head by cross connecting piece 65 extend into the bottom under Gravitative Loads, start desilting equipment, drive twin-bucket wheel-type desilting 3 to carry out desilting, under the effect entering the mud Guan Qi sludge pump connected in two bucket wheels of described twin-bucket wheel-type desilting 3, the mud suction tube of cleaning will be discharged to appointment position through sludge pump and discharge pipeline.When needs carry out hull 1 left direction desilting, start left age of a draught animal clutch type hoist engine 62, left age of a draught animal clutch type hoist engine 62 tightens up steel cable with certain speed, and steel cable pulls row frame 69 to move to the left by left horizontal stake 61, and clutch type hoist engine of the right age of a draught animal 67 unclasps steel cable with identical speed simultaneously；When needs carry out hull 1 right direction desilting, start right age of a draught animal clutch type hoist engine 67, right age of a draught animal clutch type hoist engine 67 tightens up steel cable with certain speed, and steel cable pulls row frame 69 to move to the right by right horizontal stake 68, and clutch type hoist engine of the left age of a draught animal 62 unclasps steel cable with identical speed simultaneously；Desilting starts middle hoist engine 66 and is mentioned by row frame 69 after completing.
Starting the hoist engine 34 of hull 1 two guide pile unit of head, tighten up steel cable, steel cable pulls locating dowel 31 to move upward along two anchor ears 38 fallen on pile frame 32 by pulley 33, until the travel switch 37 on guide pile touches, and hoist engine 34 machine stop motion；Extracting down the latch 36 of pile frame 32 both sides, the pile frame that will fall rotates rearward to fall down along rotational support body 35, and by the guide pile horizontal positioned on pile frame 32 to hull 1, now hull 1 only has one guide pile cell location of afterbody.
Start step device, the trolley body 53 of step device is positioned at the original position of the head of trolley body track frame 51, the guide pile 52 of hull 1 afterbody guide pile unit is positioned in water, start second hoist 59, steel cable through pulley 58 lead pull back trolley body 53 to hull afterbody move, owing to the located stake 52 of trolley body 53 is fixed on riverbed, the relative displacement to hull cephalad direction is there is in the track 56 of trolley track frame 51 with the wheel 55 of trolley body 53, trolley track frame 51 is connected for fixing with hull 1, hull 1 is driven to move forward, when the position switch 57 of the afterbody on trolley track frame 51 touches trolley body 53, hoist engine stops operating, hull completes reach.
Two groups of guide pile unit of hull 1 head are positioned in water again, one group of guide pile unit of hull 1 afterbody is mentioned, first hoist 54 on firing platform car body 53, hoist engine tightens up steel cable, and steel cable is connected to hull, trolley body 53 is pulled to move to relative to hull 1 to hull 1 head position, until touching the position switch 57 of trolley track frame 51 head, first hoist 54 stops operating, and trolley body 53 returns to initial position, put down the guide pile unit of hull 1 afterbody, complete triple dolphin mooring.
It is again started up middle hoist engine 66 and loosens steel cable, the bottom is put in the twin-bucket wheel-type desilting 3 of row frame 69 head, carries out horizontal desilting, spoil disposal.
Repeat the above steps, until desilting completes.
Claims (5)
1. a twin-bucket wheel-type mud-suction dredging machine under water, including hull, operating room, row frame and desilting head, operating room is arranged at midship, desilting head is connected to hull head through row frame, it is characterized in that, also include positioner, step device, transverse moving left and right device and mud discharging device, positioner is arranged at head and the afterbody of hull, step device is arranged at the afterbody of hull, transverse moving left and right device is arranged at the head of hull, described desilting head is twin-bucket wheel-type desilting head, it is provided with mud discharging device in each bucket wheel, described step device includes trolley track frame, trolley body, reductor, first rope roll, second rope roll, steel wire rope and pulley, the guide pile of positioner is connected to trolley body, it is arranged at the erection of the trolley track on hull and has upper and lower two-layer slide rail, trolley body is divided into upper and lower two-layer, every layer is equipped with four wheels, it is connected with the two-layer slide rail of trolley track respectively, described reductor and the second rope roll are connected with each other and are arranged on hull, second rope roll is wound with steel wire rope, steel wire rope is connected to trolley body by pulley, described first rope roll is wound with steel wire rope, one end of steel wire rope is connected with hull.
2. a kind of twin-bucket wheel-type mud-suction dredging machine under water according to claim 1, it is characterized in that, described positioner includes guide pile unit three groups identical, often group guide pile unit all includes guide pile, hoist engine and the pile frame that falls, described pile frame is respectively provided with an anchor ear up and down, head is provided with a pulley, and guide pile is serially connected with down in moving up and down state in the anchor ear of pile frame, and the steel cable on described hoist engine is connected through the pulley of the head of falling pile frame with guide pile bottom.
3. a kind of twin-bucket wheel-type mud-suction dredging machine under water according to claim 1, it is characterized in that, described mud discharging device includes into mud pipe, sludge pump and discharge pipeline, the one end entering mud pipe is arranged in twin-bucket wheel-type desilting head, the other end is connected to sludge pump, one end of discharge pipeline connects sludge pump, and the other end connects spoil disposal place.
4. a kind of twin-bucket wheel-type mud-suction dredging machine under water according to claim 2, it is characterised in that in described three groups of guide pile unit, two groups are arranged at fore, and another group is arranged at stern.
5. a kind of twin-bucket wheel-type mud-suction dredging machine under water according to claim 2, it is characterized in that, described hoist engine includes reductor, rope roll, steel cable, jaw clutch and hydraulic driver, reductor is connected with rope roll, rope roll is wound with steel cable, jaw clutch is connected between reductor and rope roll, and hydraulic driver is connected with jaw clutch, and described rope roll is provided with brake ribbon.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201511004240.XA CN105421516A (en) | 2013-11-27 | 2014-06-25 | Double bucket-wheel underwater silt-suction silt remover |
| CN201410287153.9A CN104047322B (en) | 2013-11-27 | 2014-06-25 | A kind of twin-bucket wheel-type mud-suction dredging machine under water |
| CN201511004239.7A CN105464160A (en) | 2013-11-27 | 2014-06-25 | Double-bucket-wheel type underwater mud suction silt remover |
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310615443.7 | 2013-11-27 | ||
| CN201310615443 | 2013-11-27 | ||
| CN2013106154437 | 2013-11-27 | ||
| CN201410287153.9A CN104047322B (en) | 2013-11-27 | 2014-06-25 | A kind of twin-bucket wheel-type mud-suction dredging machine under water |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511004239.7A Division CN105464160A (en) | 2013-11-27 | 2014-06-25 | Double-bucket-wheel type underwater mud suction silt remover |
| CN201511004240.XA Division CN105421516A (en) | 2013-11-27 | 2014-06-25 | Double bucket-wheel underwater silt-suction silt remover |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104047322A CN104047322A (en) | 2014-09-17 |
| CN104047322B true CN104047322B (en) | 2016-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410287153.9A Active CN104047322B (en) | 2013-11-27 | 2014-06-25 | A kind of twin-bucket wheel-type mud-suction dredging machine under water |
| CN201511004240.XA Pending CN105421516A (en) | 2013-11-27 | 2014-06-25 | Double bucket-wheel underwater silt-suction silt remover |
| CN201511004239.7A Pending CN105464160A (en) | 2013-11-27 | 2014-06-25 | Double-bucket-wheel type underwater mud suction silt remover |
Family Applications After (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201511004240.XA Pending CN105421516A (en) | 2013-11-27 | 2014-06-25 | Double bucket-wheel underwater silt-suction silt remover |
| CN201511004239.7A Pending CN105464160A (en) | 2013-11-27 | 2014-06-25 | Double-bucket-wheel type underwater mud suction silt remover |
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| CN (3) | CN104047322B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104047322B (en) * | 2013-11-27 | 2016-06-29 | 卜建余 | A kind of twin-bucket wheel-type mud-suction dredging machine under water |
| CN104060639A (en) * | 2014-06-25 | 2014-09-24 | 卜建余 | Underwater sludge suction dredging machine and dredging method |
| CN105604111A (en) * | 2014-09-19 | 2016-05-25 | 卜建余 | Double-bucket-wheel and three-reamer type cutter suction underwater silt remover |
| CN104404993B (en) * | 2014-11-10 | 2017-12-19 | 中国计量大学 | Mobile water body sewage sludge extracts processing unit |
| CN109457693A (en) * | 2018-11-20 | 2019-03-12 | 新叶九九全域科技(北京)有限公司 | A kind of mixing pile working ship waterborne |
| CN110439573B (en) * | 2019-08-08 | 2020-09-01 | 中交第二航务工程局有限公司 | Tunnel mobile dredging and flushing device and method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204000994U (en) * | 2013-11-28 | 2014-12-10 | 卜建余 | A kind of twin-bucket wheel type mud-suction dredging machine under water |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB176792A (en) * | 1921-03-11 | 1923-05-31 | Naamlooze Vennootschap Werf Gu | Improvements in floating dredgers with walking spuds |
| DE19926448A1 (en) * | 1998-06-12 | 1999-12-16 | Moebius Josef Bau | Sediment dredger and deposition vessel for waterways |
| DE29811653U1 (en) * | 1998-06-12 | 1998-09-17 | Moebius Josef Bau | Device for receiving or depositing sediments from or on a body of water |
| CN201169790Y (en) * | 2008-01-01 | 2008-12-24 | 许武 | Sliding amphibious dredging machine |
| CN103015479B (en) * | 2012-12-24 | 2014-12-10 | 中国船舶重工集团公司第七○二研究所 | Biological dredging platform and method |
| CN103352485B (en) * | 2013-06-26 | 2017-02-01 | 合肥汇众知识产权管理有限公司 | Dredger driving control mechanism and control method thereof |
| CN104047322B (en) * | 2013-11-27 | 2016-06-29 | 卜建余 | A kind of twin-bucket wheel-type mud-suction dredging machine under water |
-
2014
- 2014-06-25 CN CN201410287153.9A patent/CN104047322B/en active Active
- 2014-06-25 CN CN201511004240.XA patent/CN105421516A/en active Pending
- 2014-06-25 CN CN201511004239.7A patent/CN105464160A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204000994U (en) * | 2013-11-28 | 2014-12-10 | 卜建余 | A kind of twin-bucket wheel type mud-suction dredging machine under water |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105464160A (en) | 2016-04-06 |
| CN104047322A (en) | 2014-09-17 |
| CN105421516A (en) | 2016-03-23 |
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