CN104942564A - Mounting method of large-tonnage pin on jib of offshore shipborne jib type crane - Google Patents
Mounting method of large-tonnage pin on jib of offshore shipborne jib type crane Download PDFInfo
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- CN104942564A CN104942564A CN201510234664.9A CN201510234664A CN104942564A CN 104942564 A CN104942564 A CN 104942564A CN 201510234664 A CN201510234664 A CN 201510234664A CN 104942564 A CN104942564 A CN 104942564A
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- jib
- tonnage
- bearing pin
- pin
- shaft hole
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention discloses a mounting method of a large-tonnage pin on the jib of an offshore shipborne jib type crane. The mounting method has the advantages that a guide sleeve and an anti-collision plate are assembled to a to-be-mounted large-tonnage pin, the large-tonnage pin is mounted through a combined mounting tool, the mounting difficulty of the large-tonnage pin is lowered effectively, mounting efficiency is increased, mounting period is shortened, labor intensity is lowered, and personal safety during mounting is guaranteed; compared with a traditional mounting method, the mounting method is high in mounting efficiency, simple to operate, time saving and labor saving, good in mounting safety, stable and reliable in pin mounting quality, and the like.
Description
Technical field
The present invention relates to a kind of installation method of large-tonnage axle, particularly relate to the installation method that a kind of offshore vessel carries the large-tonnage bearing pin on jib-type crane arm support.
Background technology
It is huge, heavy that offshore vessel carries jib-type crane build, large-tonnage bearing pin appearance and size on its jib is large, heavy, and (length is greater than 2.5m, diameter is about 1m, weight is greater than 10t), it is always the difficulties installed, its installation process wastes time and energy, and in install operation process, is accidentally just easy to occur personal injury accident.
Particularly, because its applying working condition is comparatively special, seawater the tide is flowing and ebbing, dipping and heaving, to vacillate now to the left, now to the right, if between the hull of a tide process relative stage of stable development (usually, a stable slack period only has 2 hours), can not disposable large-tonnage bearing pin be assembled in the pin shaft hole of jib, just probably all that has been achieved is spoiled, when needing the hull of the tide process again waiting for another time relatively steady, reinstalls.
In prior art, originally mainly added that manually " percussion hammer " formula method carried out the installation of large-tonnage bearing pin by hoisting and hanging.Be specially: with the use of two truck cranes, wherein the large-tonnage bearing pin that plays, another percussion hammer that plays, is installed by the mode of percussion hammer constant impingement.This mounting means, one is look for point location very difficult, more seriously, because bearing pin unavoidable generation in the process of being impacted of playing rocks shakiness, cause bearing pin to be difficult to concentric with pin shaft hole, directly affect assembly quality, or even cause damage or the damage of bearing pin.Not hard to imagine, above-mentioned traditional ram type installation method is the huge engineering of a very long and work consuming effort.
In actual production process, often there is personal injury accident.
How on the basis of existing technology, by the combination of serial erecting tools, combinationally use, effectively to reduce the installation difficulty that offshore vessel carries the large-tonnage bearing pin on jib-type crane arm support, improve installation effectiveness, shorten installation period, reduce labour intensity, and ensure the personal safety in install operation process, become the technical problem that those skilled in the art are urgently to be resolved hurrily.
Summary of the invention
The object of the invention is, provide a kind of offshore vessel to carry the installation method of the large-tonnage bearing pin on jib-type crane arm support, its installation effectiveness is high, simple to operate, time saving and energy saving, and installation process security is good.
The technical scheme that the present invention is adopted for achieving the above object is, a kind of offshore vessel carries the installation method of the large-tonnage bearing pin on jib-type crane arm support, combined type erecting tools is adopted to install, it is characterized in that, described combined type erecting tools comprises jib bearing, supporting skid rail assembly, drafter, percussion hammer, assembling crane, fairlead and crashproof backplate; Wherein:
Described large-tonnage bearing pin is multidiameter thick between the detail of two ends, and its two axial ends end face is evenly equipped with the frock screw of some quantity;
Described supporting skid rail assembly comprises support jig, hydraulic jack and supporting skid rail;
Described support jig is tower structure, and it is placed on the deck of ship; Described hydraulic jack quantity is four, and point left and right two rows are arranged symmetrically with, and its base is placed on the top of described support jig respectively; Described supporting skid rail comprises horizontal base and cambered way two parts, and upward, the convex surface of described cambered way is fixedly connected with described horizontal base the concave surface of described cambered way; The horizontal base of described supporting skid rail is placed on above-mentioned four jack;
With described curved support slideway longitudinal axis for symmetry axis, in the left and right sides of the concave surface of described curved support slideway, along the longitudinal direction of described curved support slideway, be symmetrically arranged with two row's support rollers respectively;
Described drafter comprises chain block, the first fixed pulley, the second fixed pulley and steel wire rope;
The hook of described chain block is hung on anchoring device on a ship 's, and lower suspension hook is connected with steel wire rope;
The bearing of described first fixed pulley is fixing on a ship 's;
Described fairlead is integral type structure, comprises circular bottom plate, stretch out along circular bottom plate one end periphery the connecting section formed and the Inserting Tube portion stretching out formation along circular bottom plate other end periphery;
The external diameter of described connecting section is less than or equal to the external diameter of described large-tonnage bearing pin;
Described Inserting Tube portion is truncated cone-shaped structure, and the one end deviating from described circular bottom plate is the taper end of truncated cone-shaped;
In side, described Inserting Tube portion, the center of described circular bottom plate is provided with an earhole plate;
Described jib bearing is placed on the deck of ship between described support jig and described first fixed pulley, is integral type structure, comprises pedestal and carries jib-type crane arm support U-shaped notch part for placing offshore vessel;
Described U-shaped notch part be positioned on the left and right sides plate of same level line, offer one respectively and wear axle through hole;
Described aperture of wearing axle through hole is greater than the aperture of described pin shaft hole, when offshore vessel carry jib-type crane arm support be placed on described U-shaped notch part time, from the left and right sides level observation, wear the inside of axle through hole described in described pin shaft hole is all presented on;
The bearing of described second fixed pulley is fixed on the outside of the right plate of described U-shaped notch part, and one-tenth removably connects;
When carrying out the installment work of large-tonnage bearing pin:
Described fairlead is fixedly connected with described large-tonnage bearing pin with described frock screw respectively by frock bolt with crashproof backplate one the first from left right side;
Described steel wire rope successively via described first fixed pulley, the second fixed pulley, then through described pin shaft hole, is fastened on described earhole plate;
Described large-tonnage bearing pin is placed on described support jig, and now, described fairlead is towards described pin shaft hole side, and described crashproof backplate deviates from described pin shaft hole side; When pulling chain block and make steel wire rope be in tensioned state, the steel wire rope of this section between described second fixed pulley with described earhole plate overlaps with the horizontal axis of described pin shaft hole;
When described percussion hammer is suspended on the suspension hook of described assembling crane, the line between the right center point of described percussion hammer and the Left-side center point of described crashproof backplate overlaps with the horizontal axis of described pin shaft hole;
Described percussion hammer is under the driving of described assembling crane, and left and right reciprocally swinging, clashes into described crashproof backplate, meanwhile, described chain block manipulates by installing operating personnel, coordinates the described large-tonnage bearing pin of dragging to move right, until be assembled in described pin shaft hole by described large-tonnage bearing pin.
The technique effect that technique scheme is directly brought is, on the one hand, in install operation process, the balance of bearing pin and good stability, by adopting cambered surface supporting skid rail, rely on hydraulic jack to carry out lift adjustment, what can complete large-scale bearing pin quickly looks for point, location, to keep the axiality between itself and hinge axis hole;
Be used for supporting bearing pin owing to being provided with two row's support rollers on supporting slide track, application rolling friction replaces sliding friction, greatly reduces the resistance wearing axle;
And because the relative position of supporting skid rail and jib bearing is fixed, when bearing pin clashes into by percussion hammer, bearing pin steadily penetrates to pin shaft hole along slideway, and idle work is few, and installation effectiveness significantly improves.
On the other hand, the use of fairlead and crashproof backplate, further increases installation effectiveness, to ensure that in assembling process that bearing pin is unlikely and sustains damage.
In addition, draw-gear with the use of, significantly can reduce labour intensity, ensure the personal safety in install operation process.
By utilize tooling bracket coordinate leading block location with spacing, ensure that steel wire rope traction force high efficiency, solve simultaneously work high above the ground condition limit, substantially increase and wear shaft efficiency.
Preferably, above-mentioned support jig is Height Adjustable.
The technique effect that this optimal technical scheme is directly brought is, support jig Height Adjustable, effectively can solve the limited caused limitation of lifting altitude of hydraulic jack.
In sum, the present invention, relative to prior art, has installation effectiveness high, simple to operate, time saving and energy saving, and installation process security is good, and beneficial effect such as the installation quality of bearing pin reliable and stable grade.
Accompanying drawing explanation
Fig. 1 is installation theory structure schematic diagram of the present invention;
Fig. 2 is the position relationship schematic diagram of hydraulic jack and supporting skid rail;
Fig. 3 is the assembly structure schematic diagram of fairlead, crashproof backplate and bearing pin.
Description of reference numerals: the suspension hook of 1 support jig, 2 hydraulic jack, 3 supporting skid rails, 4 support rollers, 5 percussion hammers, 6 assembling cranes, 7 large-tonnage bearing pins, 8 jibs, 9 second fixed pulleys, 10 steel wire ropes, 11 jib bearings, 12 first fixed pulleys, 13 chain blocks, 14 anchoring devices, 15 crashproof backplates, 16 frock bolts, 17 fairleads, 18 earhole plates.
Detailed description of the invention
Below in conjunction with accompanying drawing, the present invention is described in detail.
As shown in Figure 1, offshore vessel of the present invention carries the installation method of the large-tonnage bearing pin on jib-type crane arm support, combined type erecting tools is adopted to install, it is characterized in that, combinations thereof formula erecting tools comprises jib bearing 11, supporting skid rail assembly, drafter, percussion hammer 5, assembling crane, fairlead 17 and crashproof backplate 15; Wherein:
Above-mentioned large-tonnage bearing pin 7 is multidiameter thick between the detail of two ends, and its two axial ends end face is evenly equipped with the frock screw of some quantity;
Above-mentioned supporting skid rail assembly comprises support jig 1, hydraulic jack 2 and supporting skid rail 3;
Above-mentioned support jig is tower structure, and it is placed on the deck of ship; Above-mentioned hydraulic jack quantity is four, and point left and right two rows are arranged symmetrically with, and its base is placed on the top of above-mentioned support jig respectively; Above-mentioned supporting skid rail comprises horizontal base and cambered way two parts, and upward, the convex surface of above-mentioned cambered way is fixedly connected with above-mentioned horizontal base the concave surface of above-mentioned cambered way; The horizontal base of above-mentioned supporting skid rail is placed on above-mentioned four jack;
With above-mentioned curved support slideway longitudinal axis for symmetry axis, in the left and right sides of the concave surface of above-mentioned curved support slideway, along the longitudinal direction of above-mentioned curved support slideway, be symmetrically arranged with two row's support rollers 4 respectively;
Above-mentioned drafter comprises chain block 13, first fixed pulley 12, second fixed pulley 9 and steel wire rope 10;
The hook of above-mentioned chain block is hung on anchoring device 14 on a ship 's, and lower suspension hook is connected with steel wire rope;
The bearing of above-mentioned first fixed pulley is fixing on a ship 's;
Above-mentioned fairlead 17 is integral type structure, comprises circular bottom plate, stretch out along circular bottom plate one end periphery the connecting section formed and the Inserting Tube portion stretching out formation along circular bottom plate other end periphery;
The external diameter of above-mentioned connecting section is less than or equal to the external diameter of above-mentioned large-tonnage bearing pin;
Above-mentioned Inserting Tube portion is truncated cone-shaped structure, and the one end deviating from above-mentioned circular bottom plate is the taper end of truncated cone-shaped;
In side, above-mentioned Inserting Tube portion, the center of above-mentioned circular bottom plate is provided with an earhole plate 18;
Above-mentioned jib bearing is placed on the deck of ship between above-mentioned support jig and above-mentioned first fixed pulley, is integral type structure, comprises pedestal and carries jib-type crane arm support U-shaped notch part for placing offshore vessel;
Above-mentioned U-shaped notch part be positioned on the left and right sides plate of same level line, offer one respectively and wear axle through hole (not shown);
Above-mentioned aperture of wearing axle through hole is greater than the aperture of above-mentioned pin shaft hole, when offshore vessel carry jib-type crane arm support be placed on above-mentioned U-shaped notch part time, from the left and right sides level observation, above-mentioned pin shaft hole is all presented on above-mentioned inside of wearing axle through hole;
The bearing of above-mentioned second fixed pulley is fixed on the outside of the right plate of above-mentioned U-shaped notch part, and one-tenth removably connects;
When carrying out the installment work of large-tonnage bearing pin:
Above-mentioned fairlead is fixedly connected with above-mentioned large-tonnage bearing pin with above-mentioned frock screw respectively by frock bolt 16 with crashproof backplate one the first from left right side;
Above-mentioned steel wire rope successively via above-mentioned first fixed pulley, the second fixed pulley, then through above-mentioned pin shaft hole, is fastened on above-mentioned earhole plate;
Above-mentioned large-tonnage bearing pin is placed on above-mentioned support jig, and now, above-mentioned fairlead is towards above-mentioned pin shaft hole side, and above-mentioned crashproof backplate deviates from above-mentioned pin shaft hole side; When pulling chain block and make steel wire rope be in tensioned state, the steel wire rope of this section between above-mentioned second fixed pulley with above-mentioned earhole plate overlaps with the horizontal axis of above-mentioned pin shaft hole;
When above-mentioned percussion hammer is suspended on the suspension hook 6 of above-mentioned assembling crane, the line between the right center point of above-mentioned percussion hammer and the Left-side center point of above-mentioned crashproof backplate overlaps with the horizontal axis of above-mentioned pin shaft hole;
Above-mentioned percussion hammer is under the driving of above-mentioned assembling crane, and left and right reciprocally swinging, clashes into above-mentioned crashproof backplate, meanwhile, above-mentioned chain block manipulates by installing operating personnel, coordinates the above-mentioned large-tonnage bearing pin of dragging to move right, until be assembled in above-mentioned pin shaft hole by above-mentioned large-tonnage bearing pin.
Above-mentioned support jig Height Adjustable.
Claims (2)
1. an offshore vessel carries the installation method of the large-tonnage bearing pin on jib-type crane arm support, combined type erecting tools is adopted to install, it is characterized in that, described combined type erecting tools comprises jib bearing, supporting skid rail assembly, drafter, percussion hammer, assembling crane, fairlead and crashproof backplate; Wherein:
Described large-tonnage bearing pin is multidiameter thick between the detail of two ends, and its two axial ends end face is evenly equipped with the frock screw of some quantity;
Described supporting skid rail assembly comprises support jig, hydraulic jack and supporting skid rail;
Described support jig is tower structure, and it is placed on the deck of ship; Described hydraulic jack quantity is four, and point left and right two rows are arranged symmetrically with, and its base is placed on the top of described support jig respectively; Described supporting skid rail comprises horizontal base and cambered way two parts, and upward, the convex surface of described cambered way is fixedly connected with described horizontal base the concave surface of described cambered way; The horizontal base of described supporting skid rail is placed on above-mentioned four jack;
With described curved support slideway longitudinal axis for symmetry axis, in the left and right sides of the concave surface of described curved support slideway, along the longitudinal direction of described curved support slideway, be symmetrically arranged with two row's support rollers respectively;
Described drafter comprises chain block, the first fixed pulley, the second fixed pulley and steel wire rope;
The hook of described chain block is hung on anchoring device on a ship 's, and lower suspension hook is connected with steel wire rope;
The bearing of described first fixed pulley is fixing on a ship 's;
Described fairlead is integral type structure, comprises circular bottom plate, stretch out along circular bottom plate one end periphery the connecting section formed and the Inserting Tube portion stretching out formation along circular bottom plate other end periphery;
The external diameter of described connecting section is less than or equal to the external diameter of described large-tonnage bearing pin;
Described Inserting Tube portion is truncated cone-shaped structure, and the one end deviating from described circular bottom plate is the taper end of truncated cone-shaped;
In side, described Inserting Tube portion, the center of described circular bottom plate is provided with an earhole plate;
Described jib bearing is placed on the deck of ship between described support jig and described first fixed pulley, is integral type structure, comprises pedestal and carries jib-type crane arm support U-shaped notch part for placing offshore vessel;
Described U-shaped notch part be positioned on the left and right sides plate of same level line, offer one respectively and wear axle through hole;
Described aperture of wearing axle through hole is greater than the aperture of described pin shaft hole, when offshore vessel carry jib-type crane arm support be placed on described U-shaped notch part time, from the left and right sides level observation, wear the inside of axle through hole described in described pin shaft hole is all presented on;
The bearing of described second fixed pulley is fixed on the outside of the right plate of described U-shaped notch part, and one-tenth removably connects;
When carrying out the installment work of large-tonnage bearing pin:
Described fairlead is fixedly connected with described large-tonnage bearing pin with described frock screw respectively by frock bolt with crashproof backplate one the first from left right side;
Described steel wire rope successively via described first fixed pulley, the second fixed pulley, then through described pin shaft hole, is fastened on described earhole plate;
Described large-tonnage bearing pin is placed on described support jig, and now, described fairlead is towards described pin shaft hole side, and described crashproof backplate deviates from described pin shaft hole side; When pulling chain block and make steel wire rope be in tensioned state, the steel wire rope of this section between described second fixed pulley with described earhole plate overlaps with the horizontal axis of described pin shaft hole;
When described percussion hammer is suspended on the suspension hook of described assembling crane, the line between the right center point of described percussion hammer and the Left-side center point of described crashproof backplate overlaps with the horizontal axis of described pin shaft hole;
Described percussion hammer is under the driving of described assembling crane, and left and right reciprocally swinging, clashes into described crashproof backplate, meanwhile, described chain block manipulates by installing operating personnel, coordinates the described large-tonnage bearing pin of dragging to move right, until be assembled in described pin shaft hole by described large-tonnage bearing pin.
2. offshore vessel according to claim 1 carries the combined type erecting tools of the large-tonnage bearing pin on jib-type crane arm support, it is characterized in that, described support jig Height Adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234664.9A CN104942564B (en) | 2015-05-11 | 2015-05-11 | A kind of offshore vessel carries the installation method of the large-tonnage bearing pin on jib-type crane arm support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510234664.9A CN104942564B (en) | 2015-05-11 | 2015-05-11 | A kind of offshore vessel carries the installation method of the large-tonnage bearing pin on jib-type crane arm support |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104942564A true CN104942564A (en) | 2015-09-30 |
| CN104942564B CN104942564B (en) | 2017-03-15 |
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|---|---|---|---|
| CN201510234664.9A Active CN104942564B (en) | 2015-05-11 | 2015-05-11 | A kind of offshore vessel carries the installation method of the large-tonnage bearing pin on jib-type crane arm support |
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| CN (1) | CN104942564B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429804A (en) * | 2016-09-30 | 2017-02-22 | 武船重型工程股份有限公司 | High-altitude mounting and dismounting method for heavy pin shaft |
| CN109879220A (en) * | 2019-04-08 | 2019-06-14 | 南通振华重型装备制造有限公司 | A kind of adjustable pin shaft mounting platform |
| CN113021253A (en) * | 2021-04-13 | 2021-06-25 | 广西建工集团建筑机械制造有限责任公司 | Auxiliary bracket for mounting and dismounting pin shaft and using method thereof |
| CN114406602A (en) * | 2022-01-25 | 2022-04-29 | 合肥华林精工科技有限公司 | Assembling tool and assembling method for large shaft sleeve |
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| CN103692192A (en) * | 2013-12-23 | 2014-04-02 | 武汉理工大学 | Bidirectional hydraulic pushing assembly device for large pins |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106429804A (en) * | 2016-09-30 | 2017-02-22 | 武船重型工程股份有限公司 | High-altitude mounting and dismounting method for heavy pin shaft |
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| CN109879220B (en) * | 2019-04-08 | 2024-05-03 | 南通振华重型装备制造有限公司 | Pin shaft mounting platform with adjustable |
| CN113021253A (en) * | 2021-04-13 | 2021-06-25 | 广西建工集团建筑机械制造有限责任公司 | Auxiliary bracket for mounting and dismounting pin shaft and using method thereof |
| CN114406602A (en) * | 2022-01-25 | 2022-04-29 | 合肥华林精工科技有限公司 | Assembling tool and assembling method for large shaft sleeve |
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|---|---|
| CN104942564B (en) | 2017-03-15 |
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