CN114016559A - Method for mounting reamer beam of cutter suction dredger - Google Patents
Method for mounting reamer beam of cutter suction dredger Download PDFInfo
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- CN114016559A CN114016559A CN202111252433.2A CN202111252433A CN114016559A CN 114016559 A CN114016559 A CN 114016559A CN 202111252433 A CN202111252433 A CN 202111252433A CN 114016559 A CN114016559 A CN 114016559A
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 36
- 239000010959 steel Substances 0.000 claims abstract description 36
- 244000035744 Hura crepitans Species 0.000 claims abstract description 22
- 238000003466 welding Methods 0.000 claims description 15
- 238000009434 installation Methods 0.000 claims description 10
- 230000005484 gravity Effects 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 description 4
- 239000013049 sediment Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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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
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- Engineering & Computer Science (AREA)
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- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
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Abstract
The invention belongs to the technical field of ship equipment, and discloses a mounting method of a reamer beam of a cutter suction dredger, which comprises the steps of firstly, dividing the reamer beam into a first section and a second section in sequence along the horizontal direction before mounting the reamer beam to a mounting groove at the tail of a ship body, wherein the first section is one end, close to the tail of the ship body, of the reamer beam, the bottom surface of the first section is arranged to be a horizontal plane, and the bottom surface of the second section is arranged to be an inclined plane; a sandbox type steel pier is detachably mounted on the bottom surface of the first section, a supporting pipe is welded on the bottom surface of the second section, and a gantry stool combination frame is fixedly mounted at the bottom of the supporting pipe; and moving a carrying trolley to the bottom of the reamer beam, jacking the reamer beam through the carrying trolley, and carrying the reamer beam to the mounting groove at the tail part of the ship body by the carrying trolley for mounting. The mounting method enables the reamer beam to be accurately and stably mounted in the mounting groove at the tail of the ship body.
Description
Technical Field
The invention relates to the technical field of ship equipment, in particular to a method for mounting a reamer beam of a cutter suction dredger.
Background
The dredger is a ship for dredging water channels and river silt. The existing dredger mainly comprises a cutter suction dredger and a drag suction dredger, wherein the cutter suction dredger utilizes a rotary reamer device arranged at the front end of a water suction pipe and surrounding the water suction pipe to cut and stir sediment at the river bottom, and then conveys the twisted sediment material to a sediment material accumulation field through the water suction pipe. The reamer beam is a component used for installing the reamer device on the cutter suction dredger, and cannot be hoisted through a general crane due to large volume and heavy weight of the reamer beam, for example, the reamer beam of the 7800 KW-level cutter suction dredger is 44.36m 8.4m 13.64m in overall dimension, the reamer beam is sharp and thin in overall dimension, the bottom of the head end of the reamer beam is a plane, the bottom of the tail end is an inclined plane, the gravity center of the reamer beam is close to one side of the head end, the height difference of the head end and the tail end of the reamer beam reaches 10 m, and the weight reaches 1200 tons. The minimum clearance between the side wall of reamer roof beam and the mounting groove side wall of hull afterbody is only 13mm, and after finishing building the reamer roof beam, how to accurately and stably install the reamer roof beam in the mounting groove of hull afterbody is the great technical problem of industry. Therefore, there is a need for a method of installing a reamer beam of a cutter suction dredger so that the reamer beam can be accurately and stably installed in an installation groove at the tail of a ship body.
Disclosure of Invention
One object of the present invention is: the reamer beam mounting method for the cutter suction dredger comprises the steps that the sand box type steel pier is used for supporting the first section, the supporting pipe is used for supporting the second section, the supporting stability of the reamer beam is guaranteed, and the reamer beam can be accurately and stably mounted in a mounting groove in the tail of a dredger body.
In order to achieve the purpose, the invention adopts the following technical scheme:
a method of installing a reamer beam of a cutter suction dredger, the method comprising:
s100, before the reamer beam is installed in an installation groove at the tail of a ship body, the reamer beam is sequentially divided into a first section and a second section along the horizontal direction, the first section is one end, close to the tail of the ship body, of the reamer beam, the bottom surface of the first section is a horizontal plane, and the bottom surface of the second section is an inclined plane;
s200, detachably mounting a sand box type steel pier on the bottom surface of the first section, welding a support pipe on the bottom surface of the second section, and fixedly mounting a gantry stool combination frame at the bottom of the support pipe;
s300, moving a carrying trolley to the bottom of the reamer beam, jacking the reamer beam through the carrying trolley, and carrying the reamer beam to the mounting groove at the tail of the ship body by the carrying trolley for mounting.
As an optional technical solution, the steps are: the bottom surface demountable installation husky box steel mound of first section specifically is:
s210, arranging a plurality of the sandbox type steel piers in an array mode, and fixedly installing bolts on the bottom surface of the first section to enable each sandbox type steel pier to bear gravity with the same size.
As an optional technical solution, in the step: before welding the support tube on the bottom surface of the second section, the method further comprises the following steps:
s201, penetrating and forming a welding hole in the second section along the vertical direction, and inserting one end of the supporting tube into the welding hole.
As an optional technical solution, after the step S201, the method further includes:
s202, welding a contact surface between the outer wall of the supporting tube and the inner hole wall of the welding hole from the top surface and the bottom surface of the second section respectively.
As an optional technical solution, after the step S203, the method further includes:
and S204, fixedly installing the gantry and stool combined frame at the bottom end of the supporting tube through bolts.
As an optional technical scheme, a plurality of groups of the gantry stool combined frames are arranged at intervals along the horizontal direction at the bottom of the second section, and a plurality of support tubes are respectively arranged on each group of the gantry stool combined frames.
As an optional technical solution, the step S300 includes:
s301, drawing a displacement center line of the reamer beam and an advancing path of the carrying trolley on the ground;
s302, moving the carrying trolley to the bottom of the second section and the bottom of the first section according to a forward route;
s303, jacking the carrying trolley to abut against the support beam of the gantry stool combined frame and the bottom surface of the first section;
s304, the carrying trolley carries the reamer beam to the mounting groove at the tail of the ship body according to a forward path for mounting.
As an optional technical solution, after the step S303, the method further includes:
s3031, measuring the position state of the reamer beam in real time by adopting a level gauge, and adjusting the reamer beam to a preset position by the carrying trolley.
As an optional technical solution, when performing the step S304, the method further includes:
s305, measuring the position state of the reamer beam in real time by adopting the level gauge, adjusting the reamer beam to a preset position through the carrying trolley, and enabling a reamer ear ring shaft of the reamer beam to align to a ship body ear ring shaft on the side wall of the mounting groove at the tail of the ship body.
As an optional technical solution, after the step S300, the method further includes:
s400, cutting off the supporting pipe welded on the bottom surface of the second section.
The invention has the beneficial effects that:
the invention provides a mounting method of a reamer beam of a cutter suction dredger, which is characterized in that the bottom surface of a first section is a horizontal plane and the gravity center of the reamer beam is close to one side of the first section, so that the first section is supported by adopting a sand box type steel pier, and the reamer beam can be stably supported by utilizing the higher disassembly and assembly speed and the higher load of the sand box type steel pier; because the bottom surface of the second section is an inclined surface and the position of the bottom surface of the second section is higher, the support tube is fixedly arranged on the gantry stool combined frame and is welded on the bottom surface of the second section, so as to support the second section, the support tube can be supported by the frame body with higher portal stool combined frame, and because the supporting tube is welded with the bottom surface of the second section, the supporting tube can be stably connected with the obliquely arranged bottom surface of the second section, thereby avoiding the sliding or deviation of the supporting tube relative to the bottom surface of the second section, after the reamer beam is installed in the installation groove at the tail of the ship body, the carrying trolley drives away from the reamer beam, the sandbox-type steel pier can be quickly detached from the bottom surface of the first section, the gantry stool combined frame can be quickly detached from the bottom of the supporting tube, the sandbox-type steel pier and the gantry stool combined frame can be repeatedly used, and the supporting tube welded on the bottom surface of the second section can be cut off as waste.
Drawings
The invention is explained in further detail below with reference to the figures and examples;
FIG. 1 is a front view of the carrying cart of the embodiment shown moved to the bottom of the reamer beam (the sandbox steel pier is not shown);
FIG. 2 is a rear view of the example of the dragon door stool assembly and the sandbox-type steel pier supporting the reamer beam;
FIG. 3 is a flow chart of an installation method according to an embodiment.
The following drawings:
1. a reamer beam; 11. a first stage; 12. a second stage;
2. a sandbox type steel pier;
3. supporting a tube;
4. a gantry stool combined frame;
5. and carrying the trolley.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description herein, it is to be understood that the terms "upper," "lower," "left," "right," and the like are based on the orientation or positional relationship shown in the drawings for convenience in description and simplicity of operation, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present invention. Furthermore, the terms "first" and "second" are used merely for descriptive purposes and are not intended to have any special meaning.
In the description herein, references to the description of "an embodiment," "an example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
The bottom of the head end of the reamer beam is a plane, the bottom of the tail end of the reamer beam is an inclined plane, the center of gravity of the reamer beam is close to one side of the head end, the height difference of the head end and the tail end of the reamer beam reaches 10 meters, the weight reaches 1200 tons, and the reamer beam cannot be lifted into the mounting groove of the tail portion of the ship body through a crane.
Therefore, to solve the above problems, as shown in fig. 1 to 3, the present embodiment provides a method of installing a reamer beam of a cutter suction dredger, the method comprising:
s100, before the reamer beam 1 is installed in an installation groove at the tail of a ship body, the reamer beam 1 is sequentially divided into a first section 11 and a second section 12 along the horizontal direction, the first section 11 is one end, close to the tail of the ship body, of the reamer beam 1, the bottom surface of the first section 11 is set to be a horizontal plane, and the bottom surface of the second section 12 is set to be an inclined plane;
s200, detachably mounting a sand box type steel pier 2 on the bottom surface of the first section 11, welding a support tube 3 on the bottom surface of the second section 12, and fixedly mounting a gantry stool combination frame 4 at the bottom of the support tube 3;
s300, moving the carrying trolley 5 to the bottom of the reamer beam 1, jacking the reamer beam 1 through the carrying trolley 5, and carrying the reamer beam 1 to a mounting groove at the tail of the ship body through the carrying trolley 5 for mounting.
Before the step S100, firstly, a sandbox-type steel pier 2 and a gantry stool combined frame 4 are built behind the tail of the ship body, a supporting pipe 3 is installed on the gantry stool combined frame 4, and the reamer beam 1 is built above the sandbox-type steel pier 2 and the gantry stool combined frame 4 by adopting steel materials.
Due to the fact that the bottom surface of the first section 11 is a horizontal plane and the gravity center of the reamer beam 1 is close to one side of the first section 11, the first section 11 is supported by the sand box type steel pier 2, and the reamer beam 1 can be stably supported by the aid of high dismounting speed and high load of the sand box type steel pier 2; because the bottom surface of the second section 12 is an inclined surface and the bottom surface of the second section 12 is higher in position, the support tube 3 is fixedly installed on the gantry stool combined frame 4 and is welded on the bottom surface of the second section 12 so as to support the second section 12, the support tube 3 can be supported by using a frame body of the gantry stool combined frame 4 which is higher, and because the support tube 3 is welded with the bottom surface of the second section 12, the support tube 3 can be stably connected with the obliquely arranged bottom surface of the second section 12 so as to prevent the support tube 3 from sliding or deviating relative to the bottom surface of the second section 12, when the reamer beam 1 is installed in the installation groove at the tail part of the ship body, the carrying trolley 5 drives away from the reamer beam 1, the sandbox-type steel pier 2 can be quickly detached from the bottom surface of the first section 11, the gantry stool combined frame 4 can be quickly detached from the bottom surface of the support tube 3, and both the sandbox-type steel pier 2 and the gantry stool combined frame 4 can be repeatedly used, while the support tubes 3 welded to the bottom of the second section 12 can be cut off as scrap. The carrying trolley 5 is an existing ship moving trolley, the specific structure of which refers to the prior art, and the detailed description is omitted in this embodiment.
Optionally, the steps are as follows: the sandbox-type steel piers 2 are detachably mounted on the bottom surface of the first section 11, specifically, the sandbox-type steel piers 2 are arranged in an array mode and fixedly mounted on the bottom surface of the first section 11 through bolts in the S210 mode, and therefore each sandbox-type steel pier 2 bears the gravity with the same size. The sandbox steel piers 2 are arranged in N rows side by side, where N is singular, for example, three rows, each row is provided with eight sandbox steel piers 2, the middle row of the sandbox steel piers 2 is located right below the horizontal center line of the first section 11, and the other two rows of the sandbox steel piers 2 are symmetrically arranged at two sides of the middle row of the sandbox steel piers 2 respectively. Alternatively, the sandbox steel piers 2 are arranged in M rows, where M is a double number, for example, two rows, and the two rows of the sandbox steel piers 2 are symmetrically arranged on both sides of the horizontal center line of the first section 11.
Optionally, in the step: before the support tube 3 is welded to the bottom surface of the second segment 12, S201 is further included, a welding hole is drilled through the second segment 12 in the vertical direction, and one end of the support tube 3 is inserted into the welding hole.
Optionally, after step S201, step S202 is further included, and a contact surface between an outer wall of the support tube 3 and an inner hole wall of the welding hole is welded from the top surface and the bottom surface of the second section 12, so that the connection stability between the support tube 3 and the reamer beam 1 is improved, and the support tube 3 is prevented from sliding on the bottom surface of the second section 12 because the bottom surface is an inclined surface.
Optionally, after step S203, step S204 is further included, and the gantry stool assembly frame 4 is fixedly mounted at the bottom end of the support tube 3 by bolts. The gantry stool combination frame 4 is fixedly connected with the supporting tube 3 through a bolt, so that the gantry stool combination frame 4 and the supporting tube 3 can be conveniently disassembled.
Optionally, a plurality of groups of the gantry stool assembly frames 4 are arranged at intervals along the horizontal direction at the bottom of the second section 12, and a plurality of support tubes 3 are respectively arranged on each group of the gantry stool assembly frames 4. In this embodiment, the gantry stool assembly frames 4 are arranged in three groups.
Optionally, step S300 includes:
s301, drawing a displacement center line of the reamer beam 1 and an advancing path of the carrying trolley 5 on the ground;
s302, moving the carrying trolley 5 to the bottom of the second section 12 and the bottom of the first section 11 according to the advancing route;
s303, jacking the carrying trolley 5 to abut against the support beam of the gantry stool combined frame 4 and the bottom surface of the first section 11;
s304, the carrying trolley 5 carries the reamer beam 1 to a mounting groove at the tail of the ship body according to the advancing route for mounting.
Optionally, after step S303, the method further includes step S3031, measuring the position state of the reamer beam 1 in real time by using a level, and adjusting the reamer beam 1 to a preset position by using the carrying trolley 5. If the reamer beam 1 deflects relative to the mounting groove after the carrying trolley 5 jacks the reamer beam 1, the reamer beam 1 impacts the wall body at the tail of the ship body to cause irreparable damage due to the fact that the weight of the reamer beam 1 is extremely large, and therefore in order to avoid the situation, the position state of the reamer beam 1 is measured in real time by the aid of the level meter, and the reamer beam 1 can be aligned to the mounting groove.
Optionally, in the step S304, the method further includes step S305, measuring a position state of the reamer beam 1 in real time by using a level, adjusting the reamer beam 1 to a preset position by using the carrying trolley 5, and aligning the reamer trunnion ring of the reamer beam 1 with the hull trunnion ring on the side wall of the mounting groove at the tail of the hull. The level gauge can measure the position state of reamer roof beam 1, and after the reamer ear ring axle of reamer roof beam 1 aimed at the hull ear ring axle on the mounting groove lateral wall of hull afterbody, the back shaft passed reamer ear ring axle and hull ear ring axle, accomplished the installation of reamer roof beam 1.
Optionally, after step S300, the method further includes: s400, the support tube 3 welded to the bottom surface of the second segment 12 is cut out. After the reamer beam 1 is installed, the carrying trolley 5 is withdrawn from the bottom of the reamer beam 1, the sandbox-type steel pier 2 is quickly detached from the bottom surface of the first section 11, the gantry stool combined frame 4 is quickly detached from the bottom of the support tube 3, and finally the support tube 3 is cut off.
In addition, the foregoing is only the preferred embodiment of the present invention and the technical principles applied. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for installing a reamer beam of a cutter suction dredger is characterized by comprising the following steps:
s100, before the reamer beam (1) is installed in an installation groove at the tail of a ship body, the reamer beam (1) is sequentially divided into a first section (11) and a second section (12) along the horizontal direction, the first section (11) is one end, close to the tail of the ship body, of the reamer beam (1), the bottom surface of the first section (11) is set to be a horizontal plane, and the bottom surface of the second section (12) is set to be an inclined plane;
s200, detachably mounting a sand box type steel pier (2) on the bottom surface of the first section (11), welding a support tube (3) on the bottom surface of the second section (12), and fixedly mounting a gantry stool combined frame (4) at the bottom of the support tube (3);
s300, moving a carrying trolley (5) to the bottom of the reamer beam (1), jacking the reamer beam (1) through the carrying trolley (5), and carrying the reamer beam (1) to the mounting groove at the tail of the ship body by the carrying trolley (5) for mounting.
2. The method of installing a reamer beam of a cutter suction dredger according to claim 1, wherein the steps of: the bottom surface demountable installation husky box steel mound (2) of first section (11) specifically is:
s210, arranging a plurality of the sand box type steel piers (2) in an array mode, and fixedly installing bolts on the bottom surface of the first section (11) so that each sand box type steel pier (2) bears gravity with the same size.
3. The method of installing a reamer beam of a cutter suction dredger according to claim 1, wherein in the step of: before the support tube (3) is welded to the bottom surface of the second section (12), the method further comprises the following steps:
s201, penetrating and forming a welding hole in the second section (12) along the vertical direction, and inserting one end of the supporting tube (3) into the welding hole.
4. The method of installing a reamer beam of a cutter suction dredger according to claim 3, further comprising, after the step S201:
s202, welding the contact surface between the outer wall of the support tube (3) and the inner hole wall of the welding hole from the top surface and the bottom surface of the second section (12) respectively.
5. The method of installing a reamer beam of a cutter suction dredger according to claim 4, further comprising, after the step S203:
s204, fixedly installing the gantry stool combined frame (4) at the bottom end of the supporting tube (3) through bolts.
6. The method for installing the reamer beam of the cutter suction dredger according to claim 5, wherein a plurality of groups of the gantry stool combined frames (4) are arranged at intervals along the horizontal direction at the bottom of the second section (12), and a plurality of support tubes (3) are respectively arranged on each group of the gantry stool combined frames (4).
7. The method of installing a reamer beam of a cutter suction dredger according to claim 1, wherein the step S300 comprises:
s301, drawing a displacement center line of the reamer beam (1) and an advancing route of the carrying trolley (5) on the ground;
s302, moving the carrying trolley (5) to the bottom of the second section (12) and the bottom of the first section (11) according to a forward route;
s303, jacking the carrying trolley (5) to abut against the support beam of the gantry stool combined frame (4) and the bottom surface of the first section (11);
s304, the carrying trolley (5) carries the reamer beam (1) to the mounting groove at the tail of the ship body according to a forward path for mounting.
8. The method of installing a reamer beam of a cutter suction dredger according to claim 7, further comprising, after the step S303:
s3031, measuring the position state of the reamer beam (1) in real time by adopting a level gauge, and adjusting the reamer beam (1) to a preset position through the carrying trolley (5).
9. The method of installing a reamer beam of a cutter suction dredger according to claim 8, further comprising, when performing the step S304:
s305, measuring the position state of the reamer beam (1) in real time by adopting the level gauge, adjusting the reamer beam (1) to a preset position through the carrying trolley (5), and enabling a reamer ear ring shaft of the reamer beam (1) to align to a ship body ear ring shaft on the side wall of the mounting groove at the tail part of the ship body.
10. The method of installing a reamer beam of a cutter suction dredger according to claim 1, further comprising, after the step S300:
s400, cutting off the support pipe (3) welded to the bottom surface of the second section (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111252433.2A CN114016559A (en) | 2021-10-26 | 2021-10-26 | Method for mounting reamer beam of cutter suction dredger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111252433.2A CN114016559A (en) | 2021-10-26 | 2021-10-26 | Method for mounting reamer beam of cutter suction dredger |
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| Publication Number | Publication Date |
|---|---|
| CN114016559A true CN114016559A (en) | 2022-02-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111252433.2A Pending CN114016559A (en) | 2021-10-26 | 2021-10-26 | Method for mounting reamer beam of cutter suction dredger |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2871292A2 (en) * | 2013-11-06 | 2015-05-13 | Baggerwerken Decloedt en Zoon N.V. | Cutting device for dislodging an underwater bottom and corresponding method |
| CN108045527A (en) * | 2017-10-30 | 2018-05-18 | 上海振华重工启东海洋工程股份有限公司 | Process of jacking is played in a kind of large-scale crane span structure depressed place with hinge handoff functionality |
| CN109231099A (en) * | 2018-10-29 | 2019-01-18 | 上海振华重工(集团)股份有限公司 | Tool part and its movement method for cutter suction dredger gantry Integral transporting |
| CN110835934A (en) * | 2019-10-16 | 2020-02-25 | 广州文冲船厂有限责任公司 | Dredger ship |
-
2021
- 2021-10-26 CN CN202111252433.2A patent/CN114016559A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2871292A2 (en) * | 2013-11-06 | 2015-05-13 | Baggerwerken Decloedt en Zoon N.V. | Cutting device for dislodging an underwater bottom and corresponding method |
| CN108045527A (en) * | 2017-10-30 | 2018-05-18 | 上海振华重工启东海洋工程股份有限公司 | Process of jacking is played in a kind of large-scale crane span structure depressed place with hinge handoff functionality |
| CN109231099A (en) * | 2018-10-29 | 2019-01-18 | 上海振华重工(集团)股份有限公司 | Tool part and its movement method for cutter suction dredger gantry Integral transporting |
| CN110835934A (en) * | 2019-10-16 | 2020-02-25 | 广州文冲船厂有限责任公司 | Dredger ship |
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Application publication date: 20220208 |