CN108045527B - Lifting process in large-scale bridge dock with hinge point switching function - Google Patents
Lifting process in large-scale bridge dock with hinge point switching function Download PDFInfo
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- CN108045527B CN108045527B CN201711036723.7A CN201711036723A CN108045527B CN 108045527 B CN108045527 B CN 108045527B CN 201711036723 A CN201711036723 A CN 201711036723A CN 108045527 B CN108045527 B CN 108045527B
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- lifting
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- wire rope
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C5/00—Equipment usable both on slipways and in dry docks
- B63C5/02—Stagings; Scaffolding; Shores or struts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C19/00—Cranes comprising trolleys or crabs running on fixed or movable bridges or gantries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63C—LAUNCHING, HAULING-OUT, OR DRY-DOCKING OF VESSELS; LIFE-SAVING IN WATER; EQUIPMENT FOR DWELLING OR WORKING UNDER WATER; MEANS FOR SALVAGING OR SEARCHING FOR UNDERWATER OBJECTS
- B63C5/00—Equipment usable both on slipways and in dry docks
- B63C5/02—Stagings; Scaffolding; Shores or struts
- B63C2005/025—Stagings, or scaffolding, i.e. constructions providing temporary working platforms on slipways, in building or repair docks, or inside hulls
- B63C2005/027—Stages, platforms, or seats suspended adjacent ship hulls on cables, chains, or the like, e.g. boatswain's chairs
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention discloses a large-scale bridge dock lifting process with a hinge point switching function, which comprises a theoretical foundation of bridge lifting, conditions and preparations of bridge lifting, trial lifting of a bridge, lifting of the bridge to a transition point and lifting of the bridge in place. The invention has the advantages that: the invention has safe use, saves resources, solves the problem of difficult integral lifting of the large bridge, and has important reference value for the construction of the bridge of the large dredger in the future.
Description
Technical Field
The invention relates to a construction method of modern ships and ocean engineering structures, in particular to a large-scale crane span structure dock lifting process with a hinge point switching function.
Background
A5000 KW reamer power self-propulsion cutter suction dredger is a double-paddle double-rotation guide pipe full-electric-power-driven self-propulsion cutter suction dredger, is used as a cutter suction dredger in the third world and the first Asia, is designed and built, and fills a gap in the dredging field in China. This bridge 1600 tons, exceed the portal crane limit. The movement mode is that the lifting device rotates around a hinge point by 23 degrees, and the maximum lifting height is close to 20 m. However, the crane span structure lifting process has certain difficulty in crane span structure lifting, and in order to ensure smooth construction and provide reference for construction of similar projects or projects in the future, the inventor designs a large crane span structure in-dock lifting process with a hinge point switching function.
Disclosure of Invention
The invention aims to provide a large-scale crane span structure dock lifting process with a hinge point switching function, which can ensure smooth lifting.
In order to solve the technical problems, the technical scheme of the invention is as follows: the utility model provides a take hinge point to switch to rise technology in large-scale crane span structure depressed place of function which innovation point lies in: the method comprises the following concrete steps of theoretical foundation of bridge lifting, bridge lifting condition and preparation, bridge test lifting, bridge lifting to a transition point and bridge lifting in place:
(1) theoretical basis of bridge lifting:
selecting a gantry crane lifting scheme, wherein the design load of the gantry crane is 500 t;
because the hoisting limit height of the gantry crane is 58m, the deflection angle of the fixed pulley on the ship body cannot be too large, and the bridge cannot be hoisted in place at one time, a middle transition process is added, and the bridge is lifted to the level of an upper hinge point by 10 degrees for the first time and 13 degrees for the second time in two steps;
(2) bridge lifting condition and preparation:
the bridge trunnion is positioned at an upper hinge point;
the bridge frame is in an inclined state;
lifting a pulley by the portal frame, finishing the assembly of the swinging pulley, in-place functional test, and adding grease for lubrication;
after the bridge frame lifting pulley is assembled, the functional test is in place, and grease is added for lubrication;
after the assembly of the guide pulley behind the wave compensation oil cylinder is finished, the function test is in place, and grease is added for lubrication;
preparing a tool;
(3) trial lifting of the bridge:
installing a base of a locking bolt on the upper hinge point of the portal frame and a base of a navigation fixing wedge block of the bridge frame;
the steel wire rope is wound in place, and rigging heads are poured at two ends of the steel wire rope;
slightly lifting the bridge frame by using the steel wire rope with the help of the gantry crane, enabling the bridge frame to leave the laying pier for 2 centimeters, stopping for 3 minutes, and observing the working condition of the steel wire rope;
continuously lifting the bridge frame to leave the laying pier for 20 centimeters, stopping for 10 minutes, and observing the working condition of the steel wire rope;
(4) lifting the bridge frame to a transition point:
if no abnormity exists, lifting the bridge frame to a middle transition point;
putting the high support and performing spot welding;
casting a rigging head of the cut section of steel wire rope, and connecting the rigging head with the steel wire rope of the hanging beam;
preparing to lift again;
(5) lifting the bridge frame in place:
repeating the step of trial lifting, and observing the condition of the steel wire rope;
lifting the bridge frame to the original locking bolt seat and inserting the locking bolt;
and after the crane span structure is lifted in place, the locking bolt pressing block is put down, the sailing locking wedge block is put in, the crane span structure is knocked and fastened to be locked, and the crane span structure is installed completely.
Further, a 300m steel wire rope is selected, the diameter strength of the steel wire rope is the same as that of a lifting steel wire rope selected for the original ship, the diameter strength of the steel wire rope is 76mm, and BS =4400 KN.
Furthermore, the bridge frame in the stage between the two steps is supported well by the high support, and multiple micro-amplitude tests are carried out in the implementation process, so that the lifting is started step by step after the safety of lifting is ensured.
Furthermore, the steel wire rope is intercepted on site, and the cable joint is cast on site.
The invention has the advantages that:
the invention has safe use, saves resources, solves the problem of difficult integral lifting of the large bridge, and has important reference value for the construction of the bridge of the large dredger in the future.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Figure 1 is a diagram of the overall bridge lift of the present invention.
Fig. 2 is a walking diagram of the crane span structure hoisting steel wire rope of the invention.
Fig. 3 is a schematic view of the bridge of the present invention in a hinge point switching state.
Fig. 4 is a schematic view of the crane span structure of the present invention in a lifting transition state.
FIG. 5 is a schematic view of the bridge of the present invention in a horizontal position.
Detailed Description
The following examples are presented to enable one of ordinary skill in the art to more fully understand the present invention and are not intended to limit the scope of the embodiments described herein.
As shown in fig. 1, a lifting process in a large-scale bridge dock with a hinge point switching function includes a theoretical basis of bridge lifting, conditions and preparations of bridge lifting, trial bridge lifting, bridge lifting to a transition point, and bridge lifting in place, and specifically includes the following steps:
(1) theoretical basis of bridge lifting:
selecting a gantry crane lifting scheme, wherein the design load of the gantry crane is 500 t;
because the hoisting limit height of the gantry crane is 58m, the deflection angle of the fixed pulley on the ship body cannot be too large, and the bridge cannot be hoisted in place at one time, a middle transition process is added, and the bridge is lifted to the level of an upper hinge point by 10 degrees for the first time and 13 degrees for the second time in two steps;
(2) bridge lifting condition and preparation:
the bridge trunnion is positioned at an upper hinge point;
the bridge frame is in an inclined state;
lifting a pulley by the portal frame, finishing the assembly of the swinging pulley, in-place functional test, and adding grease for lubrication;
after the bridge frame lifting pulley is assembled, the functional test is in place, and grease is added for lubrication;
after the assembly of the guide pulley behind the wave compensation oil cylinder is finished, the function test is in place, and grease is added for lubrication;
preparing a tool;
(3) as shown in fig. 3, the bridge is tried to rise:
installing a base of a locking bolt on the upper hinge point of the portal frame and a base of a navigation fixing wedge block of the bridge frame;
as shown in fig. 2, the steel wire rope is wound in place, and rigging heads are poured at two ends of the steel wire rope;
slightly lifting the bridge frame by using the steel wire rope with the help of the gantry crane, enabling the bridge frame to leave the laying pier for 2 centimeters, stopping for 3 minutes, and observing the working condition of the steel wire rope;
continuously lifting the bridge frame to leave the laying pier for 20 centimeters, stopping for 10 minutes, and observing the working condition of the steel wire rope;
(4) as shown in fig. 4, the bridge rises to the transition point:
if no abnormity exists, lifting the bridge frame to a middle transition point;
putting the high support and performing spot welding;
casting a rigging head of the cut section of steel wire rope, and connecting the rigging head with the steel wire rope of the hanging beam;
preparing to lift again;
(5) as shown in fig. 5, the bridge is raised into position:
repeating the step of trial lifting, and observing the condition of the steel wire rope;
lifting the bridge frame to the original locking bolt seat and inserting the locking bolt;
and after the crane span structure is lifted in place, the locking bolt pressing block is put down, the sailing locking wedge block is put in, the crane span structure is knocked and fastened to be locked, and the crane span structure is installed completely.
The bridge frame in the stage between the two steps is well supported by high supports, multiple micro-amplitude tests are carried out in the implementation process, the lifting is carried out step by step after the safety of lifting is ensured, a 300m steel wire rope is selected, the diameter strength of the steel wire rope is the same as that of a lifting steel wire rope selected by an original ship, the steel wire rope is 76mm, BS =4400KN, the steel wire rope is cut off on site, and the cable knot is cast on site.
The foregoing shows and describes the general principles and features of the present invention, together with the advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. The utility model provides a play to rise technology in large-scale crane span structure depressed place of taking hinge point to switch function which characterized in that: the method comprises the following concrete steps of theoretical foundation of bridge lifting, bridge lifting condition and preparation, bridge test lifting, bridge lifting to a transition point and bridge lifting in place:
(1) theoretical basis of bridge lifting:
selecting a gantry crane lifting scheme, wherein the design load of the gantry crane is 500 t;
because the hoisting limit height of the gantry crane is 58m, the deflection angle of the fixed pulley on the ship body cannot be too large, and the bridge cannot be hoisted in place at one time, a middle transition process is added, and the bridge is lifted to the level of an upper hinge point by 10 degrees for the first time and 13 degrees for the second time in two steps;
(2) bridge lifting condition and preparation:
the bridge trunnion is positioned at an upper hinge point;
the bridge frame is in an inclined state;
lifting a pulley by the portal frame, finishing the assembly of the swinging pulley, in-place functional test, and adding grease for lubrication; after the bridge frame lifting pulley is assembled, the functional test is in place, and grease is added for lubrication;
after the assembly of the guide pulley behind the wave compensation oil cylinder is finished, the function test is in place, and grease is added for lubrication; preparing a tool;
(3) trial lifting of the bridge:
installing a base on the portal frame, and locking the base at the upper hinge point and a base of a navigation fixing wedge block of the bridge frame through a bolt;
the steel wire rope is wound in place, and rigging heads are poured at two ends of the steel wire rope;
slightly lifting the bridge frame by using the steel wire rope with the help of the gantry crane, enabling the bridge frame to leave the laying pier for 2 centimeters, stopping for 3 minutes, and observing the working condition of the steel wire rope;
continuously lifting the bridge frame to leave the laying pier for 20 centimeters, stopping for 10 minutes, and observing the working condition of the steel wire rope;
(4) lifting the bridge frame to a transition point:
if no abnormity exists, lifting the bridge frame to a middle transition point;
putting the high support and performing spot welding;
casting the rigging head of the cut section of steel wire rope, and connecting the rigging head with the steel wire rope of the hanging beam;
preparing to lift again;
(5) lifting the bridge frame in place:
repeating the step of trial lifting, and observing the condition of the steel wire rope;
lifting the bridge frame to the original locking bolt seat and inserting the locking bolt;
and after the crane span structure is lifted in place, the locking bolt pressing block is put down, the sailing fixing wedge block is put in, the crane span structure is knocked and fastened to be locked, and the crane span structure is installed completely.
2. The large-scale crane span structure intra-dock lifting process with the hinge point switching function as claimed in claim 1, wherein: and selecting a 300m steel wire rope, wherein the diameter strength of the steel wire rope is the same as that of a hoisting steel wire rope selected from the original ship, and the steel wire rope is 76mm, and BS (boron steel) 4400 KN.
3. The large-scale crane span structure intra-dock lifting process with the hinge point switching function as claimed in claim 2, wherein: the bridge frame in the stage between the two steps is supported well by the support, and multiple micro-amplitude tests are carried out in the implementation process, so that the lifting is started step by step after the safety of lifting is ensured.
4. The large-scale crane span structure intra-dock lifting process with the hinge point switching function as claimed in claim 3, wherein: the steel wire rope is cut off on site, and the cable joint is cast on site.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711036723.7A CN108045527B (en) | 2017-10-30 | 2017-10-30 | Lifting process in large-scale bridge dock with hinge point switching function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711036723.7A CN108045527B (en) | 2017-10-30 | 2017-10-30 | Lifting process in large-scale bridge dock with hinge point switching function |
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| Publication Number | Publication Date |
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| CN108045527A CN108045527A (en) | 2018-05-18 |
| CN108045527B true CN108045527B (en) | 2020-02-14 |
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| CN201711036723.7A Active CN108045527B (en) | 2017-10-30 | 2017-10-30 | Lifting process in large-scale bridge dock with hinge point switching function |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112173035B (en) * | 2020-10-16 | 2021-07-23 | 上海振华重工(集团)股份有限公司 | Construction method of pipe joint sinking ship in limited area |
| CN114016559A (en) * | 2021-10-26 | 2022-02-08 | 广州文冲船厂有限责任公司 | Method for mounting reamer beam of cutter suction dredger |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204057697U (en) * | 2014-08-19 | 2014-12-31 | 河南省三马起重机械有限公司 | A kind of transfer crane crane span structure |
| CN204980867U (en) * | 2015-08-26 | 2016-01-20 | 上海航盛船舶设计有限公司 | Ship portal device is inhaled to hank |
| CN205820738U (en) * | 2016-07-28 | 2016-12-21 | 青岛海西重机有限责任公司 | A kind of jack up lifting device of bank bridge |
| CN207419566U (en) * | 2017-10-30 | 2018-05-29 | 中交上航局航道建设有限公司 | It is a kind of to twist the jacking system for inhaling ship |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101707404B1 (en) * | 2014-12-29 | 2017-02-16 | 대우조선해양 주식회사 | Installation Method of Gantry Tower Crane for Cargo Inspection |
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2017
- 2017-10-30 CN CN201711036723.7A patent/CN108045527B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204057697U (en) * | 2014-08-19 | 2014-12-31 | 河南省三马起重机械有限公司 | A kind of transfer crane crane span structure |
| CN204980867U (en) * | 2015-08-26 | 2016-01-20 | 上海航盛船舶设计有限公司 | Ship portal device is inhaled to hank |
| CN205820738U (en) * | 2016-07-28 | 2016-12-21 | 青岛海西重机有限责任公司 | A kind of jack up lifting device of bank bridge |
| CN207419566U (en) * | 2017-10-30 | 2018-05-29 | 中交上航局航道建设有限公司 | It is a kind of to twist the jacking system for inhaling ship |
Non-Patent Citations (1)
| Title |
|---|
| 绞吸式挖泥船门架结构强度分析;柳杨等;《江苏船舶》;20090430;第26卷(第2期);第1-4页 * |
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