CN102061681B - Fixed dual-hoisting point cantilever track type joist truss installing method - Google Patents
Fixed dual-hoisting point cantilever track type joist truss installing method Download PDFInfo
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- CN102061681B CN102061681B CN2010105882306A CN201010588230A CN102061681B CN 102061681 B CN102061681 B CN 102061681B CN 2010105882306 A CN2010105882306 A CN 2010105882306A CN 201010588230 A CN201010588230 A CN 201010588230A CN 102061681 B CN102061681 B CN 102061681B
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Abstract
The invention belongs to the technical field of water conservancy and hydropower engineering, and particularly provides a fixed dual-hoisting point cantilever track type joist truss installing method. The invention is especially suitable for the hoisting construction of gantry crane girders of dam crest of large tonnage dam-type power plants with narrow place, simple road, high hoisting height, and construction difficulty by large hoisting equipment. The method comprises the steps of: installing longitudinal beams of the cantilever on outriggers, and hanging the longitudinal beams of the cantilever and the outriggers integrally to the two adjacent gate pier roofs respectively by a tower crane; then transversely placing translation transverse arms on the two longitudinal beams of the cantilever by the tower crane; installing lifting hoisting machines respectively in the designed positions at both ends of the translation transverse beams; then installing a balance mechanism and a translation traction mechanism, and fixing a traction hoisting machine in a proper position of the gate pier roof and connecting with a power supply; finally penetrating and winding a steel wire rope, and starting the hosting machines to straighten the steel wire rope; and starting the lifting hosting machines to place fixed pulley lifting beams on the track beams at the root of the gate pier, and installing lifting appliances. The method has the advantages of simplicity, little construction disturbance, low cost and no environmental pollution.
Description
Technical field
The invention belongs to the Hydraulic and Hydro-Power Engineering technical field, particularly relate to a kind of fixed double-suspending point cantilever track type purlin suspender installation method.
Background technology
For the construction of gate dam formula Hydropower Project, inevitably to run into the lifting problem of dam crest door machine track girder.Certainly adopt bridge formation machine scheme, crane scheme, but for gate dam formula Hydropower Project, dam crest door machine track girder volume and weight is all very big, long-distance transportation is difficulty very; The workyard is narrow, road is simple and easy, and main equipment is difficult to put to good use and constructs and disturb greatly.
Summary of the invention
In view of above problem; The present invention provides a kind of fixed double-suspending point cantilever track type purlin suspender installation method, and it is specially adapted to the lifting construction of the large-tonnage dam-type power plant dam crest door machine track girder that the place is narrow, road is simple and easy, hoisting height is high, large-scale hanging device is difficult to put to good use.
This kind fixed double-suspending point cantilever track type purlin suspender installation method provided by the invention may further comprise the steps:
The first step: all parts are transported within the tower machine operating range of camp site; 20 tons of double blocks of equalizing gear are contained in cantilever longeron afterbody; The cantilever longeron is contained on the supporting leg; With the tower machine cantilever longeron and supporting leg integral body are winched to adjacent two gate piers top respectively, be placed on and confirm in advance on the good position, the not available at ordinary times steel plate piece adjustment of gate pier end face;
Second the step: with the translation crossbeam with tower machine cross-arm on two cantilever longerons, the slide block at translation crossbeam two ends just is placed on the slideway of two cantilever longerons;
The 3rd step: the winch that will hoist is installed in the two ends design attitude of translation crossbeam respectively and connects power supply;
The 4th step: with movable pulley promptly 50 ton five take turns that coaster is contained on the running block hanging beam and with fixed pulley promptly 50 tons of fourfold blocks together winch to the gate pier top, be placed under the winch that hoists near;
The 5th step: wear around hoist rope; And fag end gone out a ring, is fixed on the design attitude of translation crossbeam with pin with four wire clips cards; With the tower machine fixed pulley is installed in the design attitude of translation crossbeam then, starts winch at last movable pulley and hanging beam thereof are suspended in the air;
The 6th step: equalizing gear is installed: 10 tons of single block are hung on the gate pier earth anchor under the cantilever longeron afterbody; Wear then around steel rope; And two fag ends are gone out a ring with two wire clips cards respectively, and one hangs on the side earth anchor with 5 tons of shackles, and the other end hangs up 10 tons of jacks; The chain of jack is hooked on the opposite side earth anchor, strains jack at last and makes steel rope painstaking;
The 7th step: the translation crossbeam is pulled to cantilever longeron cantilever end design attitude with 5 tons of jacks;
The 8th step: the translation trailer coupling is installed: be hung in 4 16 tons of fourfold blocks on the anchor ring of translation crossbeam two ends and cantilever longeron tail end with 10 tons of shackles; With leading sheave promptly 5 tons of single block hang on the gate pier earth anchor under the cantilever longeron afterbody; Rack winch is fixed on the appropriate location of gate pier end face and connects power supply; Wearing at last around steel rope, startup winch makes steel rope stretching;
The 9th step: start the winch that hoists the running block hanging beam is put to the track girder of gate pier root, suspender is installed, suspender must be installed in the design attitude of track beam-ends, passes through supporting leg when winching to gate pier top parallel motion smoothly to guarantee track girder;
The tenth step: inspection, check mainly whether each position pin, coaster are installed correctly; Whether each position wiring of winch is correct; Whether winch brake adjust to the right place, whether sensitive; Whether steel rope has damage when twining.
Fixed double-suspending point cantilever track type purlin suspender installation method of the present invention, its method is simple, the construction interference is little, cost is low, and can not cause environmental pollution.
The specific embodiment
Below in conjunction with specific embodiment technical scheme of the present invention is further specified, but its qualification of not opposing:
Said fixed double-suspending point cantilever track type purlin suspender comprises: supporting leg, cantilever longeron, translation crossbeam, lifting mechanism, translation trailer coupling, equalizing gear, suspender, and said four supporting legs support two cantilever longerons and are placed in respectively on the adjacent two gate pier end face design attitudes; Said translation crossbeam is across on the two cantilever longerons, contacts with cantilever longeron slideway through its slide block; Said two cover lifting mechanisms are installed on translation longeron two ends respectively and play overhang-door machine track girder; Said two cover translation trailer couplings are drawing translation crossbeam two ends parallel motion on cantilever longeron slideway; Said equalizing gear is installed on cantilever longeron afterbody and links to each other with the gate pier earth anchor, when door machine track girder lifts by crane, keeps the balance of cantilever longeron; Said cantilever longeron cantilever end stretches out the gate pier pier nose, the translation crossbeam slide to cantilever longeron cantilever end, from gate pier root overhang-door machine track girder to the certain altitude of gate pier top, slide onto design attitude at the cantilever longeron and fall door machine track girder in place.
Wherein: said each supporting leg is high 4 meters, is welded with the common steel tube of diameter 220mm, wall thickness 6mm; Said every cantilever longeron is grown 10 meters, is welded with four common I-beam sections of 56a; Long 21.86 meters of said translation crossbeam, be that Main Girder Welding forms, because length longly can be divided two sections processing, is transported to the camp site then and dock with two common I-beam sections of 56a; Said suspender is made up of bottom girder, pull bar and running block hanging beam, and bottom girder adopts two 18
#I-beam section and Φ 80 round steel are welded, and pull bar adopts the 20mm plate iron to process, and the running block hanging beam is with two 25
#I-beam section is main being welded; Said every cover lifting mechanism is taken turns coaster and is formed by the winch of 9 meters/minute of 10 tons of rope speeds, 50 tons of fourfold block, one 50 tons five; This five is taken turns coaster and in reality, can also adopt 32 tons of three-fold blocks and two 10 tons of single block to replace, and hoist rope is selected Φ 20mm, 6 * 37 fibre core hoist ropes for use; Said every cover translation trailer coupling is made up of the winch of 12 meters/minute of 2 tons of rope speeds, two 16 tons of fourfold blocks, one 5 tons single block (track adjusting wheel), two 5 tons of jacks when traction translation crossbeam (unloaded with), and haulage cable is selected Φ 12mm, 6 * 19 fibre core steel ropes for use; Said every cover equalizing gear is made up of 20 tons of double blocks, 10 tons of single block, 10 tons of jacks, and steel rope is selected the steel rope identical with lifting mechanism for use.
This kind fixed double-suspending point cantilever track type purlin suspender installation method provided by the invention may further comprise the steps:
The first step: all parts are transported within the tower machine operating range of camp site; 20 tons of double blocks of equalizing gear are contained in cantilever longeron afterbody; The cantilever longeron is contained on the supporting leg; With the tower machine cantilever longeron and supporting leg integral body are winched to adjacent two gate piers top respectively, be placed on and confirm in advance on the good position, the not available at ordinary times steel plate piece adjustment of gate pier end face;
Second the step: with the translation crossbeam with tower machine cross-arm on two cantilever longerons, the slide block at translation crossbeam two ends just is placed on the slideway of two cantilever longerons;
The 3rd step: the winch that will hoist is installed in the two ends design attitude of translation crossbeam respectively and connects power supply;
The 4th step: with movable pulley promptly 50 ton five take turns that coaster is contained on the running block hanging beam and with fixed pulley promptly 50 tons of fourfold blocks together winch to the gate pier top, be placed under the winch that hoists near;
The 5th step: wear around hoist rope; And fag end gone out a ring, is fixed on the design attitude of translation crossbeam with pin with four wire clips cards; With the tower machine fixed pulley is installed in the design attitude of translation crossbeam then, starts winch at last movable pulley and hanging beam thereof are suspended in the air;
The 6th step: equalizing gear is installed: 10 tons of single block are hung on the gate pier earth anchor under the cantilever longeron afterbody; Wear then around steel rope; And two fag ends are gone out a ring with two wire clips cards respectively, and one hangs on the side earth anchor with 5 tons of shackles, and the other end hangs up 10 tons of jacks; The chain of jack is hooked on the opposite side earth anchor, strains jack at last and makes steel rope painstaking;
The 7th step: the translation crossbeam is pulled to cantilever longeron cantilever end design attitude with 5 tons of jacks;
The 8th step: the translation trailer coupling is installed: be hung in 4 16 tons of fourfold blocks on the anchor ring of translation crossbeam two ends and cantilever longeron tail end with 10 tons of shackles; With leading sheave promptly 5 tons of single block hang on the gate pier earth anchor under the cantilever longeron afterbody; Rack winch is fixed on the appropriate location of gate pier end face and connects power supply; Wearing at last around steel rope, startup winch makes steel rope stretching;
The 9th step: start the winch that hoists the running block hanging beam is put to the track girder of gate pier root, suspender is installed, suspender must be installed in the design attitude of track beam-ends, passes through supporting leg when winching to gate pier top parallel motion smoothly to guarantee track girder;
The tenth step: inspection, check mainly whether each position pin, coaster are installed correctly; Whether each position wiring of winch is correct; Whether winch brake adjust to the right place, whether sensitive; Whether steel rope has damage when twining.
Below technology contents of the present invention has been done detailed description.As far as persons skilled in the art, any conspicuous change of under the prerequisite that does not deviate from the principle of the invention, it being done can not exceed the protection domain of the application's accompanying claims.
Claims (2)
1. a fixed double-suspending point cantilever track type purlin suspender installation method is characterized in that, may further comprise the steps:
The first step: all parts are transported within the tower machine operating range of camp site; 20 tons of double blocks of equalizing gear are contained in cantilever longeron afterbody; The cantilever longeron is contained on the supporting leg; With the tower machine cantilever longeron and supporting leg integral body are winched to adjacent two gate piers top respectively, be placed on and confirm in advance on the good position, the not available at ordinary times steel plate piece adjustment of gate pier end face;
Second the step: with the translation crossbeam with tower machine cross-arm on two cantilever longerons, the slide block at translation crossbeam two ends just is placed on the slideway of two cantilever longerons;
The 3rd step: the winch that will hoist is installed in the two ends design attitude of translation crossbeam respectively and connects power supply;
The 4th step: with movable pulley promptly 50 ton five take turns that coaster is contained on the running block hanging beam and with fixed pulley promptly 50 tons of fourfold blocks together winch to the gate pier top, be placed under the winch that hoists near;
The 5th step: wear around hoist rope; And fag end gone out a ring, is fixed on the design attitude of translation crossbeam with pin with four wire clips cards; With the tower machine fixed pulley is installed in the design attitude of translation crossbeam then, starts winch at last movable pulley and hanging beam thereof are suspended in the air;
The 6th step: equalizing gear is installed: 10 tons of single block are hung on the gate pier earth anchor under the cantilever longeron afterbody; Wear then around steel rope; And two fag ends are gone out a ring with two wire clips cards respectively, and one hangs on the side earth anchor with 5 tons of shackles, and the other end hangs up 10 tons of jacks; The chain of jack is hooked on the opposite side earth anchor, strains jack at last and makes steel rope painstaking;
The 7th step: the translation crossbeam is pulled to cantilever longeron cantilever end design attitude with 5 tons of jacks;
The 8th step: the translation trailer coupling is installed: be hung in 4 16 tons of fourfold blocks on the anchor ring of translation crossbeam two ends and cantilever longeron tail end with 10 tons of shackles; With leading sheave promptly 5 tons of single block hang on the gate pier earth anchor under the cantilever longeron afterbody; Rack winch is fixed on the appropriate location of gate pier end face and connects power supply; Wearing at last around steel rope, startup winch makes steel rope stretching;
The 9th step: start the winch that hoists the running block hanging beam is put to the track girder of gate pier root, suspender is installed, suspender must be installed in the design attitude of track beam-ends, passes through supporting leg when winching to gate pier top parallel motion smoothly to guarantee track girder.
2. fixed double-suspending point cantilever track type purlin suspender installation method according to claim 1 is characterized in that, also comprises: in the tenth step, inspection checks mainly whether each position pin, coaster are installed correctly; Whether each position wiring of winch is correct; Whether winch brake adjust to the right place, whether sensitive; Whether steel rope has damage when twining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105882306A CN102061681B (en) | 2010-12-14 | 2010-12-14 | Fixed dual-hoisting point cantilever track type joist truss installing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2010105882306A CN102061681B (en) | 2010-12-14 | 2010-12-14 | Fixed dual-hoisting point cantilever track type joist truss installing method |
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| CN102061681A CN102061681A (en) | 2011-05-18 |
| CN102061681B true CN102061681B (en) | 2012-02-08 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102758438B (en) * | 2012-07-25 | 2015-01-07 | 中国海洋石油总公司 | Lowering device for large-scale ocean platform block |
| CN107032230B (en) * | 2017-05-31 | 2018-12-07 | 中国石油集团川庆钻探工程有限公司 | Rotary cranes beam mounting process |
| CN109179236B (en) * | 2018-08-30 | 2023-12-01 | 成都产品质量检验研究院有限责任公司 | Semi-automatic self-balancing lifting device for bus duct vertical state temperature rise test |
| CN108994522A (en) * | 2018-09-28 | 2018-12-14 | 北京首钢建设集团有限公司 | A method of mismatch is docked using jack centering pipeline |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146387A (en) * | 2000-04-05 | 2001-05-29 | Hiroshi Yamada | Structure execution work device and execution work method |
| CN2470330Y (en) * | 2001-02-28 | 2002-01-09 | 上海宝钢益昌薄板有限公司 | Bridge-type lifter |
| CN201154877Y (en) * | 2007-12-22 | 2008-11-26 | 潘安芳 | Simple dismounting type cantilever sliding small crane |
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- 2010-12-14 CN CN2010105882306A patent/CN102061681B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001146387A (en) * | 2000-04-05 | 2001-05-29 | Hiroshi Yamada | Structure execution work device and execution work method |
| CN2470330Y (en) * | 2001-02-28 | 2002-01-09 | 上海宝钢益昌薄板有限公司 | Bridge-type lifter |
| CN201154877Y (en) * | 2007-12-22 | 2008-11-26 | 潘安芳 | Simple dismounting type cantilever sliding small crane |
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