CN101353134B - Crane multiple hoisting point delivery hoisting method - Google Patents
Crane multiple hoisting point delivery hoisting method Download PDFInfo
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- CN101353134B CN101353134B CN2008100717131A CN200810071713A CN101353134B CN 101353134 B CN101353134 B CN 101353134B CN 2008100717131 A CN2008100717131 A CN 2008100717131A CN 200810071713 A CN200810071713 A CN 200810071713A CN 101353134 B CN101353134 B CN 101353134B
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Abstract
The invention provides a delivering and lifting method of cranes by a plurality of lifting points, which comprises a method for delivering and lifting heavy objects by a main crane and an auxiliary crane. The delivering and lifting method is characterized in that the auxiliary crane is positioned above the gravity center of a hoisted heavy object, and one or more than one lifting point is arranged below the gravity center of the heavy object, thus with the main crane and the auxiliary crane being forced simultaneously for starting lift, the delivering and lifting method with a plurality of lifting points is realized. The lifting method is applicable to lifting the vertical heavy objects which has insufficient rigidity and requires a plurality of lifting points for starting lift.
Description
Technical field crane multiple hoisting point delivery hoisting method (this lift-on/lift-off system, down together) belongs to the method for hoisting crane lifting, and exactly it is a kind of method of hoisting crane lifting weight.
The existing method of using always when lifting is hoisting crane hanging vertical type weight of sending of background technology; Its practice is in the slightly high position of lifted weight thing center of gravity main suspension centre to be set; By main hoisting crane (main frame, down together) lifting, and the suspension centre of sending is set under the weight center of gravity;
secondary hoisting crane (secondary machine; Lifting down together), vertical weight is by the stressed lifting simultaneously of major and minor machine, along with the lifting of main frame; Secondary machine is followd forward ... But existing hoisting crane delivery hoisting method can not be used for the lifting of the vertical weight of the many suspension centre liftings of needs.
This lift-on/lift-off system of summary of the invention is to by being hung vertical weight because of insufficient rigidity, needs many suspension centres liftings and sets up.1993 once in the many suspension centre liftings of chimney tower; Transfer according to power between suspension centre; Tower body insufficient rigidity, stressed clear and definite many suspension centres Hoisting Program have been proposed to overcome (referring to woods Chinese fourth .85m chimney tower three many suspension centres of yoke plate sliding methods liftings; Science and technology, 1994 (2) are built in Fujian): 14-15) use same thinking now again, utilize between suspension centre the transfer of power to set up this lift-on/lift-off system.
This lift-on/lift-off system is different with existing delivery hoisting method; Its secondary machine not only is provided with suspension centre under vertical weight center of gravity; But more than the vertical weight center of gravity with below; One or more suspension centres are set simultaneously; Because hoisting crane forms when requiring vertical lifting (hoisting force active line non-perpendicularity is not more than 3 °) thereby lifting, is positioned at the main suspension centre on the weight center of gravity, and be positioned at all the time between the point of resultant force (being secondary machine hoisting force active line and vertical weight crossing point of axes) of the secondary machine hoisting force under the weight center of gravity and lift.
Description of drawings Fig. 1 sends the lifting suspension centre for the many suspension centres of hoisting crane scheme drawing is set.Among Fig. 1: 1 is the lifted weight thing, and 2 is three yoke plates, and A is the main frame suspension centre, and B, C are secondary machine suspension centre, α
1Be rope angle between level of following suspension centre B, G is the weight center of gravity.
Below in conjunction with the description of drawings once foundation and the practice of this lift-on/lift-off system.Among Fig. 1; Main frame is provided with main suspension centre at the slightly high A place of lifted weight thing center of gravity; Secondary machine then connects with two suspension centres of B, C of the upper and lower setting of lifted weight thing center of gravity respectively through three yoke plates and Current Collector Sleave; Stressed simultaneously, the insufficient rigidity lifting that overcome the lifted weight thing of each suspension centre of major and minor machine during lifting, because suspension hook keeps the vertical state in the lifting, thereby along with main frame promotes and the folloing of secondary machine; The intersection point F of secondary machine hoisting force active line N-N and B, C two suspension centre lines moves to B point direction gradually, and angle reaches α between lifted weight thing axis and level when main frame rises to
1During the complementary angle of value, F point overlaps with B point, and the C point does not stress fully, and a B point is stressed, reach at this moment later on and existing delivery hoisting method roughly the same, repeat no more.
Also have, secondary in case of necessity machine also can when the suspension centre number of secondary machine setting surpasses 2, will be adjusted through Current Collector Sleave before the lifting through Current Collector Sleave respectively at more than one suspension centre is set more than the lifted weight thing center of gravity and when as follows, make each suspension centre be in normal strained condition.
The practical implementation method is by being hung vertical weight and field condition; Confirm the main suspension centre of main frame, select to confirm each suspension centre of secondary machine again by this lift-on/lift-off system, promptly hung upper and lower one or more suspension centres of selecting simultaneously of vertical weight center of gravity; Again by the major and minor machine hoisting point position that is provided with; Calculate lifted weight thing stressed in lifting, must make the lifted weight thing and the dangerous section place is stressed meets the requirements, through preferred position and the quantity of confirming suspension centre.When the suspension centre number of secondary machine surpasses 2; Will be before the lifting through the Current Collector Sleave adjustment; Make each suspension centre be in normal strained condition; All the other and existing delivery hoisting method roughly the same,
do not give unnecessary details.
Claims (2)
1. crane multiple hoisting point delivery hoisting method comprises having the method that major and minor hoisting crane is sent the lifting weight now, it is characterized in that, secondary hoisting crane is provided with one or more suspension centres simultaneously by more than the weight center of gravity of hanging and below the center of gravity.
2. according to right 1 described crane multiple hoisting point delivery hoisting method,,, finally have only following suspension centre stressed with the stressed suspension centre direction transfer downwards gradually of each suspension centre that secondary hoisting crane connects along with the lifting of main hoisting crane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100717131A CN101353134B (en) | 2008-09-08 | 2008-09-08 | Crane multiple hoisting point delivery hoisting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100717131A CN101353134B (en) | 2008-09-08 | 2008-09-08 | Crane multiple hoisting point delivery hoisting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101353134A CN101353134A (en) | 2009-01-28 |
| CN101353134B true CN101353134B (en) | 2012-01-25 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008100717131A Active CN101353134B (en) | 2008-09-08 | 2008-09-08 | Crane multiple hoisting point delivery hoisting method |
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| CN (1) | CN101353134B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105569357A (en) * | 2015-12-15 | 2016-05-11 | 安徽伟宏钢结构集团股份有限公司 | Hoisting method of large steel member |
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| Publication number | Publication date |
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| CN101353134A (en) | 2009-01-28 |
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Owner name: FUJIAN INDUSTRIAL EQUIPMENT INSTALLATION CO., LTD. Free format text: FORMER OWNER: LIN HANDING Effective date: 20120919 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120919 Address after: Fuxin Road Gulou District of Fuzhou city of Fujian Province, No. 297 350011 Patentee after: Fujian Industrial Equipment Installation Co., Ltd. Address before: 350011, Room 403, building 3, building No. 297, Fu Xin West Road, Gulou District, Fujian, Fuzhou Patentee before: Lin Handing |