CN104555734A - Upper upright column turnover device and method for marine crane - Google Patents

Upper upright column turnover device and method for marine crane Download PDF

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Publication number
CN104555734A
CN104555734A CN201310482688.7A CN201310482688A CN104555734A CN 104555734 A CN104555734 A CN 104555734A CN 201310482688 A CN201310482688 A CN 201310482688A CN 104555734 A CN104555734 A CN 104555734A
Authority
CN
China
Prior art keywords
pillar stand
turning
turnover bracket
rotating shaft
turnover
Prior art date
Application number
CN201310482688.7A
Other languages
Chinese (zh)
Inventor
李天侠
未俊丰
Original Assignee
烟台中集来福士海洋工程有限公司
海阳中集来福士海洋工程有限公司
龙口中集来福士海洋工程有限公司
中国国际海运集装箱(集团)股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 烟台中集来福士海洋工程有限公司, 海阳中集来福士海洋工程有限公司, 龙口中集来福士海洋工程有限公司, 中国国际海运集装箱(集团)股份有限公司 filed Critical 烟台中集来福士海洋工程有限公司
Priority to CN201310482688.7A priority Critical patent/CN104555734A/en
Publication of CN104555734A publication Critical patent/CN104555734A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B66HOISTING; LIFTING; HAULING
    • B66CCRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
    • B66C13/00Other constructional features or details
    • B66C13/04Auxiliary devices for controlling movements of suspended loads, or preventing cable slack
    • B66C13/08Auxiliary devices for controlling movements of suspended loads, or preventing cable slack for depositing loads in desired attitudes or positions

Abstract

The invention provides an upper upright column turnover device and method for a marine crane. The upper upright column turnover device comprises two turnover parts and a turnover support, wherein the turnover parts are symmetrically mounted on two sides at the tail part of an upper upright column and each turnover part comprises a rotating shaft; the turnover support comprises a base and two vertical plates, the vertical plates are perpendicularly fixed on the base and notches are formed in the upper ends of the vertical plates; the two rotating shafts of the two turnover parts are correspondingly inserted into the notches, so that the upper upright column can rotate around the turnover support. The method for turning over the upper upright column by using the upper upright column turnover device comprises the following steps: step 1) fixing the turnover support on a platform, and lifting the upper upright column which is horizontally placed onto the turnover support by a lifter to enable the rotating shafts to correspond to the notches of the vertical plates; step 2) enabling the upper upright column to rotate around the rotating shafts by the lifter till the upper upright column is nearly upright; step 3) detaching the upper upright column from the turnover support and vertically hoisting the upper upright column; step 4) moving the lifter to mount the upper upright column onto the base.

Description

A kind of upper pillar stand turning device of extra large work loop wheel machine and method
Technical field
The present invention relates to the installation of large-scale extra large work loop wheel machine, disclose a kind of upper pillar stand turning device and method for turning of extra large work loop wheel machine specifically.
Background technology
See Fig. 1, a kind of deep-sea semi-submerged platform 10 is provided with two large-scale mast suspenders, and this suspender mainly can be divided into pedestal 11, upper pillar stand 12, jib 13 3 part; After this three part has been built by manufacturer, be transported to place of erection and carry out assembling, debugging.
The upper pillar stand 12 of this suspender is elongated pyramid type, and weight can reach more than 300t, highly reaches more than 40m, and diameter reaches more than 7m, and during construction, generally employing level was fallen construction, completes upset and erect and close up with pedestal 11 during installation.
Conventional elongated taper shape upset setting method comprises two kinds:
1) because upper pillar stand length is large, weight large, must use the top and bottom of two corresponding upper pillar stands of suspenders difference, two suspender cooperatings, complete and stand up.The shortcoming of the program is the requirement to suspender quantity, must use two suspenders, add the lease of suspender, use cost.
2) utilize a suspender to add the mode of laying slideway to overturn.The program need shift to an earlier date lays slideway on construction ground, increases construction volume; And in switching process, the slippage of rolling object on slideway is wayward, object center of gravity can be caused to change suddenly, harmful effect be produced to suspender, causes operating risk.
Summary of the invention
A kind of upright post overturning method that the invention provides novel turning device and utilize this device and formed.
For solving the problems of the technologies described above, the invention provides a kind of upper pillar stand turning device of extra large work loop wheel machine, for overturning upper pillar stand, comprising: two turning part, the both sides being installed on this upper pillar stand afterbody of its symmetry, each turning part comprises a rotating shaft; And turnover bracket, comprising: base; And two risers, it is vertically fixed on this base, and recess is offered in upper end; Wherein, two rotating shaft correspondences of described two turning part are inserted in this recess, and this upper pillar stand can be rotated around this turnover bracket.
The present invention also provides a kind of method utilizing above-mentioned upper pillar stand turning device to carry out upper pillar stand upset, and to be installed on the pedestal of extra large work loop wheel machine by this upper pillar stand, the method comprises the following steps:
Step 1: be fixed on a platform by this turnover bracket, utilizes suspender to be winched on this turnover bracket by the upper pillar stand of horizontal positioned, makes the recess contraposition of this rotating shaft and riser;
Step 2: utilize this suspender that this upper pillar stand is rotated around this rotating shaft, until close to erectting;
Step 3: this upper pillar stand and turnover bracket are departed from, vertical-lifting upper pillar stand;
Step 4: this suspender mobile, to be installed to this upper pillar stand on this pedestal.
Advantageous Effects of the present invention is: the present invention realizes the upset of upper pillar stand by upper pillar stand turning device, utilize a suspender, such as crane barge, upset setting and the fitting work of upper pillar stand can be completed, thus effectively save the duration, reduce costs, and reducing costs under the prerequisite with the reduction of erection time, improve job safety.
Accompanying drawing explanation
Fig. 1 is the front view of extra large work loop wheel machine.
Fig. 2 is the schematic diagram of suspender lifting upper pillar stand.
Fig. 3 is the schematic diagram of the turnover bracket of upper pillar stand turning device.
Fig. 4 is the schematic diagram that upper pillar stand is on turnover bracket.
Fig. 5 be in Fig. 4 A to schematic diagram.
Fig. 6 is upper pillar stand switching process schematic diagram.
Fig. 7 is the schematic diagram that upper pillar stand turn to close to vertical state.
Fig. 8 is the schematic diagram that upper pillar stand turn to vertical state.
Detailed description of the invention
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, detailed description of the invention described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
The present invention realizes the upset of upper pillar stand by upper pillar stand turning device, below describes upper pillar stand turning device:
As shown in Fig. 3,5, upper pillar stand turning device comprises two turning part 20 and turnover bracket 30.Two turning part 20 symmetries be installed on upper pillar stand 12 tail end both sides.As shown in Figure 5, each turning part 20 comprises a rotating shaft 21 and two flanges 22.Rotating shaft 21 can be steel pipe, and its line of centers perpendicular to upper pillar stand 12 outwardly, is welded on column 12.Two flanges 22 are welded in rotating shaft 21 periphery perpendicular to rotating shaft 21, such as, be welded in end and the centre of rotating shaft 21, and two flanges 22 are parallel to each other, and have certain distance therebetween, for matching with turnover bracket.Preferably, in the inner circumferential of upper pillar stand 12, corresponding to the position welding upper pillar stand brace panel 23 of rotating shaft 21, to increase the local strength of upper pillar stand, when preventing turning part 20 to be lifted there is distortion, impaired in upper pillar stand surface.Turning part 20, for matching with turnover bracket 30, to overturn, or is served as hanger, is lifted by crane by suspender, will hereafter to this explanation.
As shown in Figure 3, turnover bracket 30 comprises base 31 and riser 32.Base 31 can be welded by 2 block plates and 2 root type steel, mainly works the pressure increasing stability and reduce bearing surface.Two risers 32 are vertically welded on base 31, and are parallel to each other, and distance is therebetween greater than the diameter of upper pillar stand, and for placing upper pillar stand 12, each riser 32 is located between two flanges 22 in rotating shaft 21.U-shaped recess 321 is offered in the upper end of riser 32, the bottom semicircular in shape of recess 321, and diameter is slightly larger than the external diameter of rotating shaft 21, and the present embodiment is, comparatively the large 10mm of rotating shaft 21, so that rotating shaft 21 overturns on riser 32.Preferably, turnover bracket 30 also comprises support diagonal brace 33, upper semi-circle ring flat-plate 34 and lower half circle ring flat-plate 35.Support diagonal brace 33 tilts to be fixed between base 31 and riser 32, with angle is roughly in 45 ° therebetween, in the present embodiment, the quantity of support diagonal brace 33 is 6 pieces, be welded on around riser 32 respectively, mainly play the stability of increase riser 32, minimizing stress is concentrated.The radius of upper semi-circle ring flat-plate 34 is identical with the arc surface radius bottom recess 321, upper semi-circle ring flat-plate 34 docks with recess 321, form the circle roughly the same with rotating shaft 21 diameter, and by bolt, upper semi-circle ring flat-plate 34 is fixed on riser 32, prevent rotating shaft 21 from switching process, departing from turnover bracket 30, produce dangerous.The radius of lower half circle ring flat-plate 35 is identical with the arc surface radius of the bottom of recess 321, and aligns with recess 321, is welded on riser 32, and in the present embodiment, in riser 32, outside is equipped with lower half circle ring flat-plate 35, increases to make riser Final 32 degree.
Fig. 5 shows upper pillar stand 12 and is in schematic diagram on turnover bracket, and upper pillar stand 12 is supported on turnover bracket 30 by turning part 20 is rotatable.
Be described the method utilizing upper pillar stand turning device to overturn upper pillar stand 12 below, the method comprises the following steps:
Step 1: with reference to shown in Fig. 4,5, turnover bracket 30 is fixed on the S of barge deck, two suspension centres 41 and 42 are provided with on upper pillar stand top, utilize suspender 50 with one of them suspension centre, such as suspension centre 42 and two rotating shafts 21, for slinging on turnover bracket 30 by upper pillar stand 12 level in Heave Here, make recess 321 contraposition of rotating shaft 21 and riser 32;
In this step, the upper pillar stand 12 that can first will lift lies in a horizontal plane on transportation pontoon, is transported to and installs berth, be then welded on barge deck by turnover bracket 30, then by upper pillar stand 12 handling on turnover bracket 30; Or, directly by upper pillar stand 12 handling on the turnover bracket 30 on barge deck.Wherein, upper pillar stand 12 hanging method is in the horizontal direction same as the prior art, therefore does not repeat at this.
Wherein, rotating shaft 21 and recess 321 contraposition of riser 32 also can comprise and use bolt riser 32 and upper semi-circle ring flat-plate 34 to be fixed, and prevent rotating shaft 21 from switching process, departing from turnover bracket 30, produce danger.
Wherein, the top of upper pillar stand 12 can be placed on the top of back-up block 60, when making upper pillar stand 12 be in horizontality, its axis keeps level substantially, as shown in Figure 4.
Step 2: utilize suspender 50 to make upper pillar stand 12 21 rotations around the shaft, until it is roughly erect.
Be specially, as shown in fig. 6-7, two suspension hooks of suspender connect suspension centre 41 and 42 respectively, and the suspension centre 42 that hoists makes the lifting gradually of upper pillar stand 12 top, and 21 rotations around the shaft, until suspension centre 42 bears whole upper pillar stand 12 weight, this process suspension centre 41 does not stress all the time.
Step 3: upper pillar stand 12 and turnover bracket 30 are departed from, vertical-lifting upper pillar stand 12.
Be specially: as shown in Figure 8, upper semi-circle ring flat-plate 34 is pulled down from riser 32, thus the constraint removed upper pillar stand 12, because suspension centre 42 is stressed before, the lifting rope therefore on it is tightened, and the lifting rope 51 of suspension centre 41 relaxes, now, promote suspension centre 41, until its lifting rope 51 is also tightened, now upper pillar stand 12 completes setting.
Step 4: movable hanger 50, to be installed to upper pillar stand 12 on pedestal 11.
In sum, the present invention realizes the upset of upper pillar stand by upper pillar stand turning device, utilize a suspender, such as crane barge, what can complete upper pillar stand stands up setting and fitting work, thus effectively saves the duration, reduces costs, and reducing costs under the prerequisite with the reduction of erection time, improve job safety.
Also can carry out combination in any between various different embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.

Claims (14)

1. a upper pillar stand turning device for extra large work loop wheel machine, for overturning upper pillar stand, comprising:
Two turning part, the both sides being installed on the afterbody of this upper pillar stand of its symmetry, each turning part comprises a rotating shaft; And
Turnover bracket, comprising:
Base; And
Two risers, it is vertically fixed on this base, and recess is offered in upper end;
Wherein, two rotating shaft correspondences of described two turning part are inserted in this recess, and this upper pillar stand can be rotated around this turnover bracket.
2. upper pillar stand turning device according to claim 1, wherein, this turning part also comprises flange, two these flanges are vertically fixed with in the periphery of each rotating shaft, and two flanges are parallel to each other, and have distance therebetween, be located between these two flanges to make this riser.
3. upper pillar stand turning device according to claim 1, wherein, in the inner circumferential of this upper pillar stand, the position corresponding to this rotating shaft is provided with upper pillar stand brace panel.
4. upper pillar stand turning device according to claim 1, wherein, this recess is U-shaped, the bottom semicircular in shape of this recess, and diameter is greater than the external diameter of this rotating shaft.
5. upper pillar stand turning device according to claim 4, wherein, this turnover bracket also comprises support diagonal brace, and this support diagonal brace tilts to be fixed between this base and riser.
6. upper pillar stand turning device according to claim 4, wherein, this turnover bracket also comprises upper semi-circle ring flat-plate, and the radius of this upper semi-circle ring flat-plate is identical with the arc surface radius of notched bottoms, this upper semi-circle ring flat-plate docks with this recess, and is secured by bolts on this riser.
7. upper pillar stand turning device according to claim 4, wherein, this turnover bracket also comprises lower half circle ring flat-plate, and the radius of this lower half circle ring flat-plate is identical with the arc surface radius of notched bottoms, and is welded in inside this riser and/or outside with this recesses align.
8. utilize the upper pillar stand turning device of the extra large work loop wheel machine according to any one of claim 1-7 to carry out a method for upper pillar stand upset, to be installed on the pedestal of extra large work loop wheel machine by this upper pillar stand, the method comprises the following steps:
Step 1: be fixed on a platform by this turnover bracket, utilizes suspender to be winched on this turnover bracket by the upper pillar stand of horizontal positioned, makes the recess contraposition of this rotating shaft and riser;
Step 2: utilize this suspender that this upper pillar stand is rotated around this rotating shaft, until close to erectting;
Step 3: this upper pillar stand and turnover bracket are departed from, vertical-lifting upper pillar stand;
Step 4: this suspender mobile, to be installed to this upper pillar stand on this pedestal.
9. the method for upper pillar stand according to claim 8 upset, wherein, in this step 1, is provided with two suspension centres on upper pillar stand top, utilizes this suspender with wherein a suspension centre and two rotating shafts for Heave Here slinging this upper pillar stand level to this turnover bracket.
10. the method for upper pillar stand upset according to claim 9, wherein, in this step 1, first this upper pillar stand is lain in a horizontal plane on transportation pontoon, be transported to and berth is installed, then this turnover bracket is fixed on this platform, then by this upper pillar stand handling on this turnover bracket; Or, directly by this upper pillar stand handling on the turnover bracket being fixed on this platform.
The method of 11. upper pillar stands according to claim 9 upsets, wherein, the recess contraposition of this rotating shaft and riser also comprises and uses bolt this riser and upper semi-circle ring flat-plate to be fixed.
The method of 12. upper pillar stand upsets according to claim 11, wherein, in this step 1, a back-up block is placed on the top of this upper pillar stand while winching on this turnover bracket by this upper pillar stand, and when making this upper pillar stand be in horizontality, its axis keeps level.
The method of 13. upper pillar stand upsets according to claim 11, wherein, in this step 2, two suspension hooks of this suspender are connected on two suspension centres, one of them suspension centre that hoists makes this upper pillar stand top lifting gradually, and rotate around this rotating shaft, until this one of them suspension centre bears whole upper pillar stand weight, another suspension centre of this process does not stress all the time.
The method of 14. upper pillar stand upsets according to claim 13, wherein, in this step 3, pulled down by this upper semi-circle ring flat-plate from this riser, promote this another suspension centre, until the lifting rope of 2 suspension centres is tightened all, now this upper pillar stand completes setting.
CN201310482688.7A 2013-10-15 2013-10-15 Upper upright column turnover device and method for marine crane CN104555734A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201310482688.7A CN104555734A (en) 2013-10-15 2013-10-15 Upper upright column turnover device and method for marine crane

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105463996A (en) * 2015-12-25 2016-04-06 上海建工四建集团有限公司 Turnover device and method used for single crane hoisting of prefabricated stand pillars
CN106078071A (en) * 2016-08-05 2016-11-09 青岛海西船舶柴油机有限公司 Frame entirety erects frock and welding method
CN106185650A (en) * 2016-09-30 2016-12-07 武船重型工程股份有限公司 A kind of suspender installation method
CN106564840A (en) * 2015-10-13 2017-04-19 上海公路桥梁(集团)有限公司 Method of rotating column by 90DEG, and rotation apparatus of rotating column by 90DEG
CN107445044A (en) * 2017-08-01 2017-12-08 深圳海龙建筑科技有限公司 Prefabricated components turning device and method for turning
CN108033351A (en) * 2017-11-27 2018-05-15 湖北三江航天红阳机电有限公司 A kind of general reversal hanger of nacelle
CN109607382A (en) * 2018-12-28 2019-04-12 湖北航天技术研究院总体设计所 A kind of the overturning suspension apparatus and application method of the vertical modal test of body
CN110817678A (en) * 2019-10-31 2020-02-21 中国三冶集团有限公司 Hoisting method of prefabricated column
CN110822283A (en) * 2019-09-27 2020-02-21 广州文冲船厂有限责任公司 Installation method of vertical LNG storage tank

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5673395A (en) * 1979-11-20 1981-06-18 Tokyo Shibaura Electric Co Device for standing up and tumbling atomic power plant
JPS60148889A (en) * 1984-01-12 1985-08-06 Toshiba Kk Method of varying attitude of article
JPH1111685A (en) * 1997-06-17 1999-01-19 Toshiba Eng Co Ltd Carriage driving system and carriage
CN2572092Y (en) * 2002-09-17 2003-09-10 雷永志 Connection taper-sleeve quick assembling/disassembling by screw
CN101337640A (en) * 2008-06-19 2009-01-07 中国石油化工集团公司 Lifting and hoisting method of vertical equipment
CN101381054A (en) * 2008-09-12 2009-03-11 中国石油化工集团公司 Hinge support for hanging vertical type equipment by crane push method
CN202542682U (en) * 2012-04-26 2012-11-21 山东莱芜金雷风电科技股份有限公司 Auxiliary frame for switching transverse hoisting into vertical hoisting for large-sized shaft piece

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5673395A (en) * 1979-11-20 1981-06-18 Tokyo Shibaura Electric Co Device for standing up and tumbling atomic power plant
JPS60148889A (en) * 1984-01-12 1985-08-06 Toshiba Kk Method of varying attitude of article
JPH1111685A (en) * 1997-06-17 1999-01-19 Toshiba Eng Co Ltd Carriage driving system and carriage
CN2572092Y (en) * 2002-09-17 2003-09-10 雷永志 Connection taper-sleeve quick assembling/disassembling by screw
CN101337640A (en) * 2008-06-19 2009-01-07 中国石油化工集团公司 Lifting and hoisting method of vertical equipment
CN101381054A (en) * 2008-09-12 2009-03-11 中国石油化工集团公司 Hinge support for hanging vertical type equipment by crane push method
CN202542682U (en) * 2012-04-26 2012-11-21 山东莱芜金雷风电科技股份有限公司 Auxiliary frame for switching transverse hoisting into vertical hoisting for large-sized shaft piece

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106564840A (en) * 2015-10-13 2017-04-19 上海公路桥梁(集团)有限公司 Method of rotating column by 90DEG, and rotation apparatus of rotating column by 90DEG
CN105463996A (en) * 2015-12-25 2016-04-06 上海建工四建集团有限公司 Turnover device and method used for single crane hoisting of prefabricated stand pillars
CN105463996B (en) * 2015-12-25 2018-02-16 上海建工四建集团有限公司 A kind of turning device and method for prefabricated stand column single crane hoisting
CN106078071A (en) * 2016-08-05 2016-11-09 青岛海西船舶柴油机有限公司 Frame entirety erects frock and welding method
CN106185650A (en) * 2016-09-30 2016-12-07 武船重型工程股份有限公司 A kind of suspender installation method
CN107445044A (en) * 2017-08-01 2017-12-08 深圳海龙建筑科技有限公司 Prefabricated components turning device and method for turning
CN108033351A (en) * 2017-11-27 2018-05-15 湖北三江航天红阳机电有限公司 A kind of general reversal hanger of nacelle
CN108033351B (en) * 2017-11-27 2019-12-24 湖北三江航天红阳机电有限公司 General upset hoist in cabin body
CN109607382A (en) * 2018-12-28 2019-04-12 湖北航天技术研究院总体设计所 A kind of the overturning suspension apparatus and application method of the vertical modal test of body
CN110822283A (en) * 2019-09-27 2020-02-21 广州文冲船厂有限责任公司 Installation method of vertical LNG storage tank
CN110817678A (en) * 2019-10-31 2020-02-21 中国三冶集团有限公司 Hoisting method of prefabricated column

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Application publication date: 20150429