CN105110174B - Method for manufacturing or transforming main beams of crane - Google Patents
Method for manufacturing or transforming main beams of crane Download PDFInfo
- Publication number
- CN105110174B CN105110174B CN201510474975.2A CN201510474975A CN105110174B CN 105110174 B CN105110174 B CN 105110174B CN 201510474975 A CN201510474975 A CN 201510474975A CN 105110174 B CN105110174 B CN 105110174B
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- Prior art keywords
- crane
- girder
- pull bar
- span centre
- bracing frame
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000004519 manufacturing process Methods 0.000 title abstract description 18
- 230000001131 transforming effect Effects 0.000 title abstract 5
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 23
- 239000010959 steel Substances 0.000 claims abstract description 23
- 238000003466 welding Methods 0.000 claims description 10
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 7
- 238000003825 pressing Methods 0.000 claims description 4
- 230000009466 transformation Effects 0.000 claims description 4
- 238000005266 casting Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 241000288140 Gruiformes Species 0.000 description 25
- 230000009194 climbing Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 241000124872 Grus grus Species 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Jib Cranes (AREA)
- Leg Units, Guards, And Driving Tracks Of Cranes (AREA)
Abstract
Provided is a method for manufacturing or transforming main beams of a crane. An I-shaped steel support and reinforcing ribs are welded between a main beam midspan beam and supporting frames; tensioners are mounted at the top ends of the supporting frames and the tail end of a main beam cantilever through connecting seats, and are tensioned through a tensioning system, so that the camber of the main beam midspan beam meets the standard requirement, and the upwarping degree of the effective cantilever position of the main beam cantilever ranges from 0.9/350 to 1.4/35. According to the method for manufacturing or transforming the main beams of the crane, processing and manufacturing are easy, cost is low, and construction is convenient; the method is suitable for being used for manufacturing or transforming main beams of cranes of any tonnage, and especially suitable for manufacturing and transforming of portal cranes in the port and shipbuilding industry. The camber difference of the two manufactured or transformed main beams of the crane is kept between 0 to 1 mm, the main beams of the crane are always kept at any value within the international range, steel is saved, and cost is reduced by 15% to 20 %; the method conforms to the national energy saving and emission reducing policy, and the service life of the crane is prolonged.
Description
Technical field
The present invention relates to crane manufacturing process, more particularly to a kind of manufacture of crane girder or the method transformed.
Background technology
Bridge-type, gantry crane are the widely used special equipments of industry and traffic Material Enterprise, are to ensure wanting for crane performance
Ask, it is to avoid motor-driven carrier " climbing ", " car slipping " phenomenon occur, crane girder is it is necessary to have certain camber, China's lifting
Machine manufactures technical standard order crane girder in zero load, the due camber of girder span centre(LKTo rise
The span of heavy-duty machine, i.e. crane are walked to take turns span).Due to the various reasons in design, manufacture, use, crane can be made
Girder produces lower flexure strain, and its harm shows as：Cart gnaws rail, dolly " climbing ", " car slipping ", and lifting capacity declines, or even occurs
Accident, jeopardizes safety.
Main beam of gantry crane cantilever should be upwarped, and the upper set-back at effective cantilever should be（0.9/350—1.4/350）L
For jib-length, cantilever downwarp can cause dolly " car slipping " that accident easily occurs, jeopardize safety.
The content of the invention
It is an object of the invention to provide a kind of crane girder manufacture or the method transformed, are manufactured with the method or are transformed
Crane girder can fully meet crane manufacturing technology standard to girder span centre camber and the effective cantilever of kingpost cantalever at
Upper set-back requirement.
The present invention crane girder manufacture method, it is characterised in that 1, girder span centre beam camber meetDuring condition, LKFor the span of crane, welding H-bar support between girder span centre beam and bracing frame, I-steel
Frame arranges Jia Gu Zhu with girder span centre beam, bracing frame, and flange beam stand and girder span centre beam angle are 45-65 °；2nd, it is outstanding in girder
Arm meets the upper set-back at effective cantilever（0.9/350-1.4/350）Under conditions of L, wherein L be jib-length, bracing frame top
Tensioner is installed by connecting seat with kingpost cantalever end in end, and tensioning, the tensioning are carried out to tensioner using tensioning system
Device includes that thrust bearing, bearing sleeve, pull bar, pull bar connecting seat, tensioning support, fag end fixed-hinged support, fag end fix hinge, steel
Cord, thrust bearing are arranged on tensioning support by bearing sleeve, and pull bar is located in thrust bearing, and one end of pull bar is spiral shell
Bolt, the other end are threadedly coupled with pull bar connecting seat by screw thread, and the other end of pull bar connecting seat is provided with wedge-shaped slot；Fag end fixes hinge
It is fixed on fag end fixed-hinged support by bearing pin, fag end is fixed one end of hinge and is provided with wedge-shaped slot；The profile of pouring basin of rope end with
Above-mentioned wedge-shaped slot is identical, and with square conical internal cavity, steel wire rope two ends are respectively penetrated in the square conical internal cavity of pouring basin of rope end, and
Steel wire rope end head is cast in the side's of being fixed on conical internal cavity with tin-base babbit, the pouring basin of rope end difference at steel wire rope two ends is embedding
Enter in the wedge-shaped slot of pull bar connecting seat and fag end fixed-hinged support, and fixed with pressing plate and bolt.
The method of the crane girder transformation of the present invention, it is characterised in that 1, first in the middle part of girder span centre beam and girder
Regulation is cut respectively at the lower cover and web of cantilever arm bracing frame 50-150mm to stitch, the 1/ of depth of beam based on the height of regulation seam
3-2/5；2nd, the lower end welding top sheave seat in the middle part of the girder, arranges pedestal, downslide wheel seat and jack, downslide wheel seat on ground
And jack is located between two pedestals, drag-line is wound on top sheave seat, downslide wheel seat and jack, and its two ends is affixed with pedestal,
By jack jacking, meet the camber of girder span centre beam, and weld between girder span centre beam and bracing frame
Flange beam stand is connect, flange beam stand arranges Jia Gu Zhu with girder span centre beam, bracing frame, and flange beam stand is pressed from both sides with girder span centre beam
Angle is 45-70 °；3rd, tensioner is installed by connecting seat on bracing frame top and kingpost cantalever end, and adopts tensioning system pair
Tensioner carries out tensioning, makes the upper set-back that kingpost cantalever is met at effective cantilever be（0.9/350-1.4/350）L, wherein L are outstanding
Arm lengths, it is hinged that the tensioner includes that thrust bearing, bearing sleeve, pull bar, pull bar connecting seat, tensioning support, fag end are fixed
Seat, fag end fix hinge, steel wire rope, and thrust bearing is arranged on tensioning support by bearing sleeve, and pull bar is located in thrust bearing,
One end of pull bar is bolt, and the other end is threadedly coupled with pull bar connecting seat by screw thread, and the other end of pull bar connecting seat is provided with wedge
Shape groove；Fag end is fixed hinge and is fixed on fag end fixed-hinged support by bearing pin, and fag end is fixed one end of hinge and is provided with wedge-shaped slot；Fag end
The profile of casting gate is identical with above-mentioned wedge-shaped slot, and with square conical internal cavity, steel wire rope two ends respectively penetrate pouring basin of rope end
In square conical internal cavity, and steel wire rope end head is cast in the side's of being fixed on conical internal cavity with tin-base babbit, steel wire rope two ends
Pouring basin of rope end is respectively embedded in the wedge-shaped slot of pull bar connecting seat and fag end fixed-hinged support, and is fixed with pressing plate and bolt；4、
Seam welding will be adjusted complete, remove drag-line, you can.
The crane girder manufacture of the present invention or the method transformed, easy processing manufacture, low cost, easy construction, it is adaptable to
The crane girder manufacture of any tonnage is transformed, and is particularly suited for the gantry crane manufacture transformation of harbour, shipbuilding industry.Jing
Manufacture or the crane feature transformed are as follows：1st, two girder of crane arch difference is maintained in the range of 0-1 millimeters；2nd, crane
Girder remains at arbitrary value in the range of GB；3rd, tensioner system increased the tangent plane product of main beam structure, improve girder
Intensity and Static stiffness, and improve lifting capacity 4, save steel, reduces cost 15-20%, meet national energy-saving reduce discharging policy, prolong
Long service life of equipment.
Description of the drawings
Fig. 1 is the structural representation of the present invention；
Fig. 2 is partial structural diagram in Fig. 1；
Fig. 3 is tensioner structural representation in Fig. 1；
1st, girder, 2, flange beam stand, 3, Jia Gu Zhu, 4, tensioner, 5, connecting seat, 6, drag-line, 7, top sheave seat, 8, under
Pulley base, 9, jack, 10, pedestal, 11, thrust bearing, 12, bearing sleeve, 13, pull bar, 14, pouring basin of rope end, 15, pressure
Plate, 16, pull bar connecting seat, 17, tensioning support, 18, steel wire rope, 19, fag end fixed-hinged support, 20, fag end fix hinge, 21, pin
Axle, 22, adjust seam.
Specific embodiment
The method of a kind of crane girder manufacture, it is characterised in that 1, meet in the camber of girder span centre beamDuring condition, LKFor the span of crane, welding H-bar support 2, I-steel between girder span centre beam and bracing frame
Support 2 arranges Jia Gu Zhu 3 with girder span centre beam, bracing frame, and flange beam stand 2 and girder span centre beam angle are 50-60 °；2nd, exist
Kingpost cantalever meets the upper set-back at effective cantilever（0.9/350-1.4/350）Under conditions of L, wherein L is jib-length,
Tensioner 4 is installed by connecting seat 5 with kingpost cantalever end in support top, and carries out tensioning to tensioner 4 using tensioning system.
The method of a kind of crane girder transformation, it is characterised in that 1, first in the middle part of girder span centre beam and kingpost cantalever
Cut at lower cover and web away from bracing frame 100mm respectively and adjust seam 22, the 1/3- of depth of beam based on the height of regulation seam 22
2/5；2nd, the lower end welding top sheave seat 7 in the middle part of the girder, arranges pedestal 10, downslide wheel seat 8 and jack 9 on ground, glides
Wheel seat 8 and jack 9 are located between two pedestals 10, and drag-line 6 is wound on top sheave seat 7, downslide wheel seat 8 and jack 9, its two ends
It is affixed with pedestal 10, by 9 jacking of jack, meet the camber of girder span centre beam, LKFor crane across
Degree, and the welding H-bar support 2 between girder span centre beam and bracing frame, flange beam stand 2 are set up with girder span centre beam, support
Jia Gu Zhu 3 are put, flange beam stand 2 and girder span centre beam angle are 50-60 °；3rd, it is logical on bracing frame top and kingpost cantalever end
Cross connecting seat 5 and tensioner 4 is installed, and tensioning is carried out to tensioner 4 using tensioning system, make upper at the effective cantilever of kingpost cantalever
Set-back meets（0.9/350-1.4/350）The requirement of L, wherein L are jib-length, and the tensioner 4 includes thrust bearing 11, axle
Bearing set 12, pull bar 13, pull bar connecting seat 16, tensioning support 17, fag end fixed-hinged support 19, fag end fix hinge 20, steel wire rope
18, thrust bearing 11 is arranged on tensioning support 17 by bearing sleeve 12, and pull bar 13 is located in thrust bearing 11, pull bar 13
One end is bolt, and the other end is threadedly coupled with pull bar connecting seat 16 by screw thread, and the other end of pull bar connecting seat 16 is provided with wedge shape
Groove；Fag end is fixed hinge 20 and is fixed on fag end fixed-hinged support 19 by bearing pin 21, and fag end is fixed one end of hinge 20 and is provided with wedge shape
Groove；The profile of pouring basin of rope end 14 is identical with above-mentioned wedge-shaped slot, and with square conical internal cavity, 18 two ends of steel wire rope respectively penetrate rope
In the square conical internal cavity of head casting gate 14, and steel wire rope end head is cast in the side's of being fixed on conical internal cavity with tin-base babbit,
The pouring basin of rope end 14 at 18 two ends of steel wire rope is respectively embedded into pull bar connecting seat 16 and is fixed in the wedge-shaped slot of hinge 20 with fag end, and with pressing
Plate 15 and bolt are fixed；4th, 22 welding of seam will be adjusted complete, removes drag-line 6, you can.
Claims (3)
1. a kind of method that crane girder is manufactured, it is characterised in that：（1）, girder span centre beam camber meetDuring condition, LKFor the span of crane, welding H-bar support between girder span centre beam and bracing frame
（2）, flange beam stand（2）Jia Gu Zhu are set with girder span centre beam, bracing frame（3）, flange beam stand（2）Press from both sides with girder span centre beam
Angle is 50-60 °；（2）, meet the upper set-back at effective cantilever in kingpost cantalever and be（0.9/350-1.4/350）Under conditions of L,
Wherein L is jib-length, and bracing frame top passes through connecting seat with kingpost cantalever end（5）Tensioner is installed（4）, and adopt tensioning
System is to tensioner（4）Carry out tensioning.
2. a kind of method that crane girder is transformed, it is characterised in that：（1）, first in the middle part of girder span centre beam and kingpost cantalever
Regulation seam is cut respectively at lower cover away from bracing frame 50-150mm and web（22）, adjust seam（22）Height based on depth of beam
1/3-2/5；（2）, in the middle part of the girder lower end welding top sheave seat（7）, pedestal is set on ground（10）, downslide wheel seat（8）
And jack（9）, downslide wheel seat（8）And jack（9）It is located at two pedestals（10）Between, drag-line（6）It is wound on top sheave seat（7）、
Downslide wheel seat（8）And jack（9）On, its two ends and pedestal（10）It is affixed, by jack（9）Jacking, makes girder span centre beam
Camber meet, LKFor the span of crane, and I-shaped is welded between girder span centre beam and bracing frame
Steel bracket（2）, flange beam stand（2）Jia Gu Zhu are set with girder span centre beam, bracing frame（3）, flange beam stand（2）With girder across
Central sill angle is 50-60 °；（3）, pass through connecting seat in bracing frame top and kingpost cantalever end（5）Tensioner is installed（4）, and
Using tensioning system to tensioner（4）Tensioning is carried out, meets the upper set-back at the effective cantilever of kingpost cantalever（0.9/350-1.4/
350）The requirement of L, wherein L are jib-length；（4）, by adjust seam（22）Welding is complete, removes drag-line（6）, you can.
3. crane girder according to claim 1 is manufactured method or crane girder according to claim 2
The method of transformation, it is characterised in that：The tensioner（4）Including thrust bearing（11）, bearing sleeve（12）, pull bar（13）, draw
Bar connecting seat（16）, tensioning support（17）, fag end fixed-hinged support（19）, fag end fix hinge（20）, steel wire rope（18）, thrust axis
Hold（11）By bearing sleeve（12）Installed in tensioning support（17）On, pull bar（13）It is located at thrust bearing（11）In, pull bar
（13）One end be bolt, the other end is by screw thread and pull bar connecting seat（16）Threaded connection, pull bar connecting seat（16）It is another
End is provided with wedge-shaped slot；Fag end fixes hinge（20）By bearing pin（21）It is fixed on fag end fixed-hinged support（19）On, fag end fixes hinge
（20）One end be provided with wedge-shaped slot；Pouring basin of rope end（14）Profile it is identical with above-mentioned wedge-shaped slot, and with square conical internal cavity, steel
Cord（18）Two ends respectively penetrate pouring basin of rope end（14）Square conical internal cavity in, and with tin-base babbit by steel wire rope end head
In the casting side's of being fixed on conical internal cavity, steel wire rope（18）The pouring basin of rope end at two ends（14）It is respectively embedded into pull bar connecting seat（16）With
Fag end fixes hinge（20）Wedge-shaped slot in, and use pressing plate（15）And bolt is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474975.2A CN105110174B (en) | 2015-08-06 | 2015-08-06 | Method for manufacturing or transforming main beams of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510474975.2A CN105110174B (en) | 2015-08-06 | 2015-08-06 | Method for manufacturing or transforming main beams of crane |
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| Publication Number | Publication Date |
|---|---|
| CN105110174A CN105110174A (en) | 2015-12-02 |
| CN105110174B true CN105110174B (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510474975.2A Expired - Fee Related CN105110174B (en) | 2015-08-06 | 2015-08-06 | Method for manufacturing or transforming main beams of crane |
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| Country | Link |
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| CN (1) | CN105110174B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109319658B (en) * | 2018-09-07 | 2020-11-24 | 中国建筑第八工程局有限公司 | Traveling crane type hoisting device |
| CN110217697A (en) * | 2019-06-24 | 2019-09-10 | 傅萍 | The method of crane girder manufacture transformation |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069952A (en) * | 1992-07-02 | 1993-03-17 | 付敏华 | Use " prestressed tensioner " and repair the method for transforming crane girder |
| JPH0967080A (en) * | 1995-08-30 | 1997-03-11 | Ishikawajima Harima Heavy Ind Co Ltd | Overhead crane |
| JP2004269093A (en) * | 2003-03-06 | 2004-09-30 | Mitsubishi Heavy Ind Ltd | Overhead traveling crane |
| CN2717910Y (en) * | 2004-07-23 | 2005-08-17 | 傅国华 | Crane main girder capable of restoring upper camber |
| CN2853737Y (en) * | 2005-09-29 | 2007-01-03 | 傅萍 | Prestressed stretch-draw apparatus |
| CN202508765U (en) * | 2012-04-03 | 2012-10-31 | 辽宁三洋重工起重机装备有限公司 | Large double-beam box-type gantry crane |
| CN204096928U (en) * | 2014-09-20 | 2015-01-14 | 河南省黄河防爆起重机有限公司 | A kind of main beam of gantry crane |
| CN104787673A (en) * | 2015-03-19 | 2015-07-22 | 张同茂 | Gantry crane having main beam with suspension cable type structure |
-
2015
- 2015-08-06 CN CN201510474975.2A patent/CN105110174B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1069952A (en) * | 1992-07-02 | 1993-03-17 | 付敏华 | Use " prestressed tensioner " and repair the method for transforming crane girder |
| JPH0967080A (en) * | 1995-08-30 | 1997-03-11 | Ishikawajima Harima Heavy Ind Co Ltd | Overhead crane |
| JP2004269093A (en) * | 2003-03-06 | 2004-09-30 | Mitsubishi Heavy Ind Ltd | Overhead traveling crane |
| CN2717910Y (en) * | 2004-07-23 | 2005-08-17 | 傅国华 | Crane main girder capable of restoring upper camber |
| CN2853737Y (en) * | 2005-09-29 | 2007-01-03 | 傅萍 | Prestressed stretch-draw apparatus |
| CN202508765U (en) * | 2012-04-03 | 2012-10-31 | 辽宁三洋重工起重机装备有限公司 | Large double-beam box-type gantry crane |
| CN204096928U (en) * | 2014-09-20 | 2015-01-14 | 河南省黄河防爆起重机有限公司 | A kind of main beam of gantry crane |
| CN104787673A (en) * | 2015-03-19 | 2015-07-22 | 张同茂 | Gantry crane having main beam with suspension cable type structure |
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| Publication number | Publication date |
|---|---|
| CN105110174A (en) | 2015-12-02 |
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