CN209568413U - Deep water high-precision jackstone rams the flat and multi-functional workboat of bedding dredging - Google Patents
Deep water high-precision jackstone rams the flat and multi-functional workboat of bedding dredging Download PDFInfo
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- CN209568413U CN209568413U CN201920178296.4U CN201920178296U CN209568413U CN 209568413 U CN209568413 U CN 209568413U CN 201920178296 U CN201920178296 U CN 201920178296U CN 209568413 U CN209568413 U CN 209568413U
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- dredging
- chute
- bedding
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Abstract
The utility model discloses deep water high-precision jackstones to ram the flat and multi-functional workboat of bedding dredging, including hull, throwing mechanism is installed on the hull, ram flattening mechanism and dredging mechanism, the throwing mechanism includes the chute for constraining jackstone direction and the lifting assembly for promoting chute, the chute bottom is fixedly installed with first connecting portion part, the rammer flattening mechanism includes the vibration hammer for tamping leveling bedding, the second connecting portion part that can be fixedly connected with first connecting portion part is equipped at the top of the vibration hammer, the dredging mechanism includes the dredging component for discharging water bottom sediment, the third connecting component that can be fixedly connected with first connecting portion part is equipped at the top of the dredging component.The workboat can realize underwater bedding throwing, dredging, the switching of compacting leveling multiple functions, complete bedding throwing, leveling, dredging operation, the utilization rate of construction ship can be improved, reduce construction cost, simplify construction method.
Description
Technical field
The utility model relates to underwater construction technologies, and in particular to deep water high-precision jackstone rams flat multi-functional with bedding dredging
Workboat.
Background technique
The prefabricated components such as caisson need to excavate foundation trench before installing under water, then carry out the throwing of bedding, leveling,
Dredging operation.Wherein, bedding throwing need to use throwing ship, and berthing throwing ship after barge transporting stone to designated area passes through skin
The modes such as band or excavator dispensing are fed to throwing ship, and the material casting of throwing ship is in the bottom to complete throwing operation；Base bed flattening need to make
With leveling ship, rough block of stone originally is incited somebody to action using the principle of vibration tamp, by the vibration for being mounted on vibration hammer on leveling ship
It is dynamic that block stone is rearranged into combination, so that bedding surface is reached smooth；Bedding dredging need to use dredger, by clear with dredger
The object that back-silts of foundation trench is removed in the connected dredging suction nozzle suction of pump of becoming silted up.
Therefore, existing bedding throwing, dredging, leveling effect need to use the different ships such as throwing ship, dredger, leveling ship
Type equipment difference operation, construction cost is higher, and construction method is cumbersome.
Summary of the invention
It is put down in view of the shortcomings of the prior art, the technical problems to be solved in the utility model is to provide deep water high-precision jackstone rammer
With the multi-functional workboat of bedding dredging, which can realize that underwater bedding throwing, dredging, compacting flatten cutting for multiple functions
It changes, completes bedding throwing, leveling, dredging operation, the utilization rate of construction ship can be improved, reduce construction cost, simplify construction
Method.
In order to achieve the above object, the technical solution adopted in the utility model are as follows:
A kind of deep water high-precision jackstone rams flat with the multi-functional workboat of bedding dredging, including hull, installs on the hull
There is throwing mechanism, ram flattening mechanism and dredging mechanism, the throwing mechanism includes chute for constraining jackstone direction and is used for
The lifting assembly of chute is promoted, the chute is arranged along the vertical direction, and the chute bottom is fixedly installed with the first connection
Component, the rammer flattening mechanism include the vibration hammer for tamping leveling bedding, and being equipped at the top of the vibration hammer can be with first
The second connecting portion part that connecting component is fixedly connected, the dredging mechanism include the dredging group for discharging water bottom sediment
Part, the dredging component top are equipped with the third connecting component that can be fixedly connected with first connecting portion part.
Preferably, the throwing mechanism further includes for installing the trolley of chute and being mounted on the trolley rail of shipboard
Road, the trolley can be moved along trolley track, and the trolley is equipped with for limiting the vertically moving constriction of chute
Part, the constraint component, which is equipped with, is vertically directed track, and the chute is set to and is vertically directed in track.
Preferably, the lifting assembly includes the hoist engine that can promote or transfer chute by haulage cable, institute
It states hoist engine to be fixedly mounted on the car, the wirerope of the hoist engine connects chute by diverting pulley pack.
Preferably, the lifting assembly further includes the limiting component for fixed chute height and position, the limit
Position component includes the multiple dowel holes for being set to chute outer wall, and the alignment pin being installed on the trolley, the positioning
Pin hole is uniformly arranged along the vertical direction, and the alignment pin can be inserted in dowel hole with fixed chute height and position.
Preferably, the throwing mechanism further includes GPS positioning instrument for positioning chute position and slips for measuring
The altimeter of the vertical spacing of trench bottom and bedding top surface, the GPS positioning instrument and the equal wirelessly transmitting data of altimeter are to ship
Control system on body, the control system can show GPS positioning instrument and altimeter test data, the GPS positioning instrument
It is fixedly installed at the top of chute, the altimeter is fixedly installed in chute bottom.
Preferably, the chute is the U-shaped chute of face side wall opening setting.
Preferably, described first connecting portion part includes the connection ring that fixing sleeve is set to outside chute, connection ring is set to and slips
Trench bottom, the connection ring offer multiple first through hole, and the second connecting portion part and third connecting component are equipped with
Multiple second through-holes, second through-hole are set to and first through hole corresponding position and can be connected to first through hole, fixing bolt
It may pass through the first through hole being connected and the second through-hole, so that first connecting portion part bolt second connecting portion part or third interconnecting piece
Part.
Preferably, the vibration hammer includes the hammer body being fixedly installed in below second connecting portion part, the hammer body
The vibration hammer control device and power supply unit of control hammer body vibration, the vibration hammer control are connected with fluid pressure line by cable
Device and power supply unit are installed on hull.
Preferably, the dredging component includes the removing sludge being fixedly installed in below third connecting component, Yi Jiyu
The dredging suction nozzle of removing sludge feed pipe connection, desilting tube road one end of the removing sludge are located at the water surface or more, and described is clear
The pump that becomes silted up is electrically connected with its control device and power supply unit, and the control device and power supply unit of the removing sludge are installed on hull
On.
Compared with prior art, the advantages of the utility model and have the active effect that provide deep water high-precision jackstone rammer
The flat and multi-functional workboat of bedding dredging, the workboat can realize that underwater bedding throwing, dredging, compacting flatten cutting for multiple functions
It changes, completes bedding throwing, leveling, dredging operation, the utilization rate of construction ship can be improved, reduce construction cost, simplify construction
Method.
Detailed description of the invention
Fig. 1 is the multi-functional workboat throwing job state structural schematic diagram of the utility model；
Fig. 2 is the part A enlarged drawing of Fig. 1；
Fig. 3 is chute and first connecting portion part fit structure schematic diagram；
Fig. 4 is that the multi-functional workboat of the utility model rams flat job state structural schematic diagram；
Fig. 5 is the part B enlarged drawing of Fig. 4；
Fig. 6 is second connecting portion part structural schematic diagram；
The multi-functional workboat dredging operation status architecture schematic diagram of Fig. 7 the utility model；
Fig. 8 is the C portion enlarged drawing of Fig. 7；
Fig. 9 is diverting pulley pack set-up mode schematic diagram；
In last figure: 1- hull, 2- throwing mechanism, 21- chute, 22- lifting assembly, 221- constraint component, 222- volumes
Raise machine, 223- angle pulley, 2231- first pulley, 2232- second pulley, 2233- third pulley, the 4th pulley of 2234-,
The 5th pulley of 2235-, the 6th pulley of 2236-, 224- wirerope, 225- alignment pin, 226- dowel hole, 23- trolley, 24-
Trolley track, 25- first connecting portion part, 251- first through hole, 252- connection ring, 26- altimeter, 27-GPS position indicator, 3- are rammed
Flattening mechanism, 31- second connecting portion part, the second through-hole of 311-, 312- connecting plate, 32- hammer body, 4- dredging mechanism, the connection of 41- third
Component, 42- removing sludge, 43- dredging suction nozzle, 44- desilting tube road.
Specific embodiment
In the following, the utility model is specifically described by illustrative embodiment.It should be appreciated, however, that not having
In the case where being further discussed below, element, structure and features in an embodiment can also be advantageously incorporated into other implementations
In mode.
It should be noted that in the description of the present invention, term "inner", "outside", "upper", "lower", "left", "right",
The orientation or positional relationship of the instructions such as "front", "rear" is positional relationship based on the figure, is merely for convenience of describing this reality
It is described with novel with simplified, rather than the device or element of indication or suggestion meaning must have a particular orientation, with specific
Orientation construction and operation, therefore should not be understood as limiting the present invention.
Term " first ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relatively important
Property or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ", " second ", " third " feature can
To explicitly or implicitly include one or more of the features.
Embodiment:
As shown in figures 1-8, a kind of deep water high-precision jackstone rams the flat and multi-functional workboat of bedding dredging, including hull 1, institute
It states and throwing mechanism 2 is installed on hull 1, rams flattening mechanism 3 and dredging mechanism 4, the throwing mechanism 2 includes for constraining jackstone
The chute 21 in direction and lifting assembly 22 for promoting chute 21, the chute 21 are arranged along the vertical direction, and described slips
21 bottom of slot is fixedly installed with first connecting portion part 25, and the rammer flattening mechanism 3 includes the vibration hammer for tamping leveling bedding,
The second connecting portion part 31 that can be fixedly connected with first connecting portion part 25, the dredging mechanism are equipped at the top of the vibration hammer
4 include the dredging component for discharging water bottom sediment, and being equipped at the top of the dredging component can be solid with first connecting portion part 25
Surely the third connecting component 41 connected.
Flat and bedding Dredging Construction method, including following step are rammed using the deep water high-precision jackstone of above-mentioned multi-functional workboat
It is rapid:
Throwing operation: positioning of mooring a boat after 1 row of hull to default throwing construction area, feed ship to 1 berthing of hull,
After adjusting 21 bottom of chute to specified depth of water position with lifting assembly 22, by throwing mechanism 2 to construction location throwing building stones, stone
Material is fallen on bedding under 21 direction of chute, after throwing to default throwing elevation, stops throwing, mobile hull 1 to next ship
Position, repeats above-mentioned throwing operation, until completing entire construction area bedding throwing；
It rams flat operation: 21 bottom of chute being promoted to the disengaging water surface with lifting assembly 22, is fixedly connected with first connecting portion part
25 with second connecting portion part 31 so that the vibration hammer for ramming flattening mechanism 3 is installed on 21 bottom of chute, 1 row of hull is to flattened zone
It moors a boat after positioning, is transferred vibration hammer to specified depth of water position using lifting assembly 22, start vibration hammer, shake to bedding
It is dynamic to ram flat operation, it puts down wait ram to the default flat elevation of rammer, closes vibration hammer, mobile hull 1 repeats above-mentioned to next accommodation
Flat operation is rammed, until completing entire construction area bedding compacting leveling；
Dredging operation: being promoted to the disengaging water surface for 21 bottom of chute with lifting assembly 22, disconnect first connecting portion part 25 with
Vibration hammer is removed from 21 bottom of chute, is fixedly connected with first connecting portion part 25 and third by the connection between second connecting portion part 31
Connecting component 41, so that the dredging component of dredging mechanism 4 is installed on 21 bottom of chute, 1 row of hull is fixed to mooring a boat to dredging region
Behind position, dredging component is transferred to specified depth of water position using lifting assembly 22, starts dredging component, dredging is carried out to bedding
Operation after the completion of dredging component lower section bedding dredging, closes dredging component, and mobile hull 1 repeats above-mentioned to next accommodation
Dredging operation, until completing entire construction area bedding dredging.
It can realize that underwater bedding throwing, dredging, compacting flatten a variety of function using above-mentioned multi-functional workboat and construction method
Bedding throwing, leveling, dredging operation are completed in the switching of energy, and the utilization rate of construction ship can be improved, and reduce construction cost, letter
Change construction method.
Specifically, the throwing mechanism 2 further includes for installing the trolley 23 of chute 21 and being mounted on the trolley of shipboard
Track 24, the trolley 23 can be moved along trolley track 24, and the trolley 23 is equipped with for limiting chute 21 along the vertical direction
The constraint component 221 of movement, the constraint component 221, which is equipped with, is vertically directed track, and the chute 21 is set to and is vertically directed track
It is interior.
The setting of trolley 23 and trolley track 24, make chute 21 in the construction process and can be moved along 24 direction of trolley track with
Construction demand is adapted to, in throwing, is rammed in flat, dredging operation, after the construction operation for completing a position, moves trolley under
One position carries out construction operation, until after the completion of an accommodation construction operation, then move hull to next accommodation and carry out construction work
Industry, until completing entire construction area bedding throwing, the setting of trolley 23 and trolley track 24 can reduce the mobile number of hull 1, can
Construction cost is preferably reduced, construction method is simplified.Meanwhile chute can be limited to along vertical side by the setting of constraint component 221
To movement, the direction of motion of chute, convenient accurate positioning during throwing, ramming gentle dredging operation can be preferably limited.
Specifically, above-mentioned constraint component 221 can be that the vertically moving this field of constraint qualification chute 21 can be achieved
All conventional arrangements, such as constraint component 221 are set as offering the constraint frame of vertical through-hole, and chute 21 is sheathed on vertical logical
In hole, vertical through-hole bore is matched with chute cross section shape, and chute 21 can only be along vertical side by vertical through-hole restrict
To movement.
Specifically, the lifting assembly 22 includes the elevator that can promote or transfer chute 21 by haulage cable 224
Machine 222, the hoist engine 222 are fixedly mounted on trolley 23, and the wirerope 224 of the hoist engine 222 passes through angle pulley group
Part 223 connects chute 21.
Specifically, the diverting pulley pack 223 can be used it is a variety of it is existing can change 224 direction of motion of wirerope with
Realize that the set-up mode of 21 elevating control of chute, the pulley of the diverting pulley pack 223 can be set to trolley 23 and/or chute 21
On, such as use set-up mode shown in Fig. 9:
The diverting pulley pack 223 is made of six pulleys, wherein first pulley 2231, second pulley 2232, third
Pulley 2233 and the 4th pulley 2234 are fixedly mounted on trolley top surface, and the 5th pulley 2235 and the 6th pulley 2236 are fixedly mounted
In chute lower part two sides and high settings are waited, in addition to first pulley 2231 is horizontally disposed, other pulleys are vertically arranged, second pulley
2232 are parallel to the 5th pulley 2235 and are set to right above the 5th pulley 2235, and third pulley 2233 and the 4th pulley 2234 are located at
In same perpendicular in front of chute and high settings are waited, third pulley 2233 and the 4th pulley 2234 are perpendicular to the 5th pulley
2235 settings.224 rope end of wirerope of hoist engine 222 sequentially passes through first pulley 2231, second pulley 2232, the 5th pulley
2235, it is fixedly connected after third pulley 2233, the 4th pulley 2234 and the 6th pulley 2236 with pallet bottom, using above-mentioned steering
223 set-up mode of pulley assembly and baudrier can realize the lifting of chute 21 by the folding and unfolding of the wirerope 224 of hoist engine 222
Control.
Specifically, the lifting assembly 22 further includes the limiting component for 21 height and position of fixed chute, it is described
Limiting component includes the multiple dowel holes 226 for being set to 21 outer wall of chute, and the alignment pin 225 being mounted on trolley 23, institute
The dowel hole 226 stated is uniformly arranged along the vertical direction, and the alignment pin 225 can be inserted in dowel hole 226 with solid
Determine 21 height and position of chute.Pass through the cooperation of the dowel hole 226 on chute 21 and the alignment pin 225 being installed on trolley 23
The height and position for limiting fixed chute 21, facilitates 21 position of chute to fix, facilitates construction operation.
Specifically, the throwing mechanism 2 further includes GPS positioning instrument 27 for positioning 21 position of chute and for measuring
The altimeter 26 of the vertical spacing of 21 bottom of chute and bedding top surface, the GPS positioning instrument 27 and altimeter 26 are wireless to be passed
Control system on transmission of data to hull 1, the control system can show the test data of GPS positioning instrument 27 and altimeter 26,
The GPS positioning instrument 27 is fixedly installed in 21 top of chute, and the altimeter 26 is fixedly installed in 21 bottom of chute.GPS
Position indicator 27 can test chute 21 horizontal position and vertical height and position, it is vertical with measurement 21 bottom of chute and bedding top surface
The altimeter 26 of spacing cooperates, real-time measurement jackstone elevation and leveling elevation that can be more convenient, convenient accurate construction.
Specifically, the GPS positioning instrument for station keeping ship body position can be respectively set on the bow and stern of hull 1,
With for positioning 21 position of chute GPS positioning instrument 27 cooperation can be more accurate positioning construction location.
Specifically, the chute 21 is the U-shaped chute of face side wall opening setting.The setting of U-shaped chute can be more square
Just the filling of building stones, more convenient constructing operation.
Specifically, described first connecting portion part 25 includes the connection ring 252 that fixing sleeve is set to outside chute 21, the company
Connecing ring 252 can be connect by welding manner with 21 bottom of chute, and the connection ring 252 offers multiple first through hole 251, institute
The second connecting portion part 31 and third connecting component 41 stated are equipped with multiple second through-holes 311, and second through-hole 311 is set to
With 251 corresponding position of first through hole and can be connected to first through hole 251, fixing bolt may pass through the first through hole 251 being connected
With the second through-hole 311 so that first connecting portion part 25 bolts second connecting portion part 31 or third connecting component 41.Described second
Connecting component 31 can be set as structure as shown in FIG. 6, including with connect connecting plate 312 that ring-shaped matches and be set to connecting plate
The second through-hole 311 on 312, the third connecting component 41 can be set as structure identical with second connecting portion part 31.First
Connecting component 25 and second connecting portion part 31 and third connecting component 41 are bolted by fixing bolt, more convenient can be vibrated
The disassembly and assembly of hammer and dredging component, more convenient conversion construction operation.
Specifically, the vibration hammer includes the hammer body 32 for being fixedly installed in 31 lower section of second connecting portion part, the hammer
Body 32 connects the vibration hammer control device and power supply unit that control hammer body 32 vibrates, the vibration by cable with fluid pressure line
Hammer control device and power supply unit are installed on hull 1, and the cable and fluid pressure line can be set in chute 21.
Specifically, the dredging component includes the removing sludge 42 for being fixedly installed in 41 lower section of third connecting component, and
The dredging suction nozzle 43 being connected to 42 feed pipe of removing sludge, 44 one end of desilting tube road of the removing sludge 42 be located at the water surface with
On, the removing sludge 42 is electrically connected with its control device and power supply unit by conducting wire, the control dress of the removing sludge 42
It sets and is installed on hull 1 with power supply unit, the conducting wire can be set in chute 21.
The above descriptions are merely preferred embodiments of the present invention, is not to make other forms to the utility model
Limitation, any person skilled in the art is changed or is modified as possibly also with the technology contents of the disclosure above equivalent
The equivalent embodiment of variation is applied to other fields, but all without departing from the content of the technical scheme of the utility model, according to this reality
With novel technical spirit any simple modification, equivalent variations and remodeling to the above embodiments, it is practical new to still fall within this
The protection scope of type technical solution.
Claims (9)
1. a kind of deep water high-precision jackstone rams the flat and multi-functional workboat of bedding dredging, including hull, which is characterized in that the ship
It includes for constraining slipping for jackstone direction that throwing mechanism, rammer flattening mechanism and dredging mechanism, the throwing mechanism are equipped on body
Slot and lifting assembly for promoting chute, the chute are arranged along the vertical direction, and the chute bottom is fixedly installed with
First connecting portion part, the rammer flattening mechanism include the vibration hammer for tamping leveling bedding, are equipped at the top of the vibration hammer
The second connecting portion part that can be fixedly connected with first connecting portion part, the dredging mechanism include for discharging water bottom sediment
Dredging component, the dredging component top are equipped with the third connecting component that can be fixedly connected with first connecting portion part.
2. deep water high-precision jackstone according to claim 1 rams the flat and multi-functional workboat of bedding dredging, which is characterized in that
The throwing mechanism further includes for installing the trolley of chute and being mounted on the trolley track of shipboard, and the trolley can be along platform
Track road is mobile, and the trolley is equipped with for limiting the vertically moving constraint component of chute, and the constraint component is equipped with
It is vertically directed track, the chute is set to and is vertically directed in track.
3. deep water high-precision jackstone according to claim 2 rams the flat and multi-functional workboat of bedding dredging, which is characterized in that
The lifting assembly includes the hoist engine that can promote or transfer chute by haulage cable, and the hoist engine is fixedly mounted on
On trolley, the wirerope of the hoist engine connects chute by diverting pulley pack.
4. deep water high-precision jackstone according to claim 2 rams the flat and multi-functional workboat of bedding dredging, which is characterized in that
The lifting assembly further includes the limiting component for fixed chute height and position, and the limiting component includes being set to chute
Multiple dowel holes of outer wall, and the alignment pin being installed on trolley, the dowel hole are uniformly arranged along the vertical direction,
The alignment pin can be inserted in dowel hole with fixed chute height and position.
5. deep water high-precision jackstone according to claim 1 rams the flat and multi-functional workboat of bedding dredging, which is characterized in that
The throwing mechanism further includes GPS positioning instrument for positioning chute position and for measuring chute bottom and bedding top surface
The altimeter of vertical spacing, the control system on the GPS positioning instrument and the equal wirelessly transmitting data to hull of altimeter are described
GPS positioning instrument be fixedly installed at the top of chute, the altimeter is fixedly installed in chute bottom.
6. deep water high-precision jackstone according to claim 1 rams the flat and multi-functional workboat of bedding dredging, which is characterized in that
The chute is the U-shaped chute of face side wall opening setting.
7. deep water high-precision jackstone according to claim 1 rams the flat and multi-functional workboat of bedding dredging, which is characterized in that
Described first connecting portion part includes the connection ring that fixing sleeve is set to outside chute, and connection ring is set to chute bottom, the connection
Ring offers multiple first through hole, and the second connecting portion part and third connecting component are equipped with multiple second through-holes, described
The second through-hole be set to and first through hole corresponding position and can be connected to first through hole, fixing bolt may pass through first to be connected
Through-hole and the second through-hole, so that first connecting portion part bolt second connecting portion part or third connecting component.
8. deep water high-precision jackstone according to claim 1 rams the flat and multi-functional workboat of bedding dredging, which is characterized in that
The vibration hammer includes the hammer body being fixedly installed in below second connecting portion part, and the hammer body passes through cable and fluid pressure line
The vibration hammer control device and power supply unit of connection control hammer body vibration, the vibration hammer control device and power supply unit installation
In on hull.
9. deep water high-precision jackstone according to claim 1 rams the flat and multi-functional workboat of bedding dredging, which is characterized in that
The dredging component includes the removing sludge being fixedly installed in below third connecting component, and is connected to removing sludge feed pipe
Dredging suction nozzle, desilting tube road one end of the removing sludge is located at the water surface or more, the removing sludge and its control device and
Power supply unit electrical connection, the control device and power supply unit of the removing sludge are installed on hull.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920178296.4U CN209568413U (en) | 2019-01-31 | 2019-01-31 | Deep water high-precision jackstone rams the flat and multi-functional workboat of bedding dredging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920178296.4U CN209568413U (en) | 2019-01-31 | 2019-01-31 | Deep water high-precision jackstone rams the flat and multi-functional workboat of bedding dredging |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853462A (en) * | 2019-01-31 | 2019-06-07 | 中交一航局第二工程有限公司 | Deep water high-precision jackstone rams flat and the multi-functional workboat of bedding dredging and construction method |
| CN113882449A (en) * | 2021-09-29 | 2022-01-04 | 中交第二航务工程局有限公司 | High-efficiency high-precision underwater foundation bed dredging method |
-
2019
- 2019-01-31 CN CN201920178296.4U patent/CN209568413U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109853462A (en) * | 2019-01-31 | 2019-06-07 | 中交一航局第二工程有限公司 | Deep water high-precision jackstone rams flat and the multi-functional workboat of bedding dredging and construction method |
| CN109853462B (en) * | 2019-01-31 | 2024-03-19 | 中交一航局第二工程有限公司 | Deep water high-precision polishing Dan Benping and foundation bed dredging multifunctional construction ship and construction method |
| CN113882449A (en) * | 2021-09-29 | 2022-01-04 | 中交第二航务工程局有限公司 | High-efficiency high-precision underwater foundation bed dredging method |
| CN113882449B (en) * | 2021-09-29 | 2023-08-22 | 中交第二航务工程局有限公司 | High-efficiency high-precision underwater foundation bed dredging method |
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