CN114074894A - Portal crane portal end beam and travelling mechanism folding manufacturing process - Google Patents
Portal crane portal end beam and travelling mechanism folding manufacturing process Download PDFInfo
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- CN114074894A CN114074894A CN202111208436.6A CN202111208436A CN114074894A CN 114074894 A CN114074894 A CN 114074894A CN 202111208436 A CN202111208436 A CN 202111208436A CN 114074894 A CN114074894 A CN 114074894A
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- portal
- end beam
- lower connecting
- connecting support
- welding
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- 230000007246 mechanism Effects 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 22
- 238000003466 welding Methods 0.000 claims abstract description 41
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 18
- 239000010959 steel Substances 0.000 claims abstract description 18
- 238000003754 machining Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 21
- 239000000919 ceramic Substances 0.000 claims description 6
- 230000035515 penetration Effects 0.000 claims description 5
- 238000010586 diagram Methods 0.000 claims description 4
- 238000010276 construction Methods 0.000 abstract description 12
- 238000005520 cutting process Methods 0.000 description 7
- 238000009966 trimming Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 239000003973 paint Substances 0.000 description 3
- 238000004826 seaming Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 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 description 1
- 238000009417 prefabrication Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C5/00—Base supporting structures with legs
- B66C5/02—Fixed or travelling bridges or gantries, i.e. elongated structures of inverted L or of inverted U shape or tripods
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C6/00—Girders, or track-supporting structures, specially adapted for cranes
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
A manufacturing process for folding an end beam and a traveling mechanism of a portal crane portal frame comprises the following steps: firstly, welding a coaming and a portal end beam flange plate to form a lower connecting support; secondly, machining a flange plate in the lower connecting support; when the portal end beam and the portal cross beam are folded to form a combined member, the lower connecting supports are preassembled, and corresponding steel seal numbers are knocked in the thickness direction of the flange plate of each lower connecting support; when the large group is folded, the saddle is connected with the lower connecting support through bolts to form a saddle assembly II; fifthly, when the large group is folded, connecting the saddle assembly II with the walking mechanism through a shaft; hoisting the portal frame end beam and portal frame cross beam assembly to four groups of travelling mechanisms; and seventhly, welding a folding welding seam between the portal end beam and the saddle assembly II. The invention optimizes the large-combination gathering manufacturing process and avoids the construction difficulty and the construction danger of the operation in the narrow space inside the portal end beam.
Description
Technical Field
The invention relates to a manufacturing process for folding an end beam and a traveling mechanism of a portal crane portal.
Background
As shown in background fig. 1-4, the current field closure installation process flow is as follows: a fabrication hole 1 is formed in the portal end beam 3 in advance, and folding repair cutting allowance is formed in the position of a folding opening 2 of the portal end beam 3 and a saddle assembly I5 in advance; connecting a saddle 8 and an end beam flange plate 7 by using a process bolt to form a saddle assembly I5 → positioning four groups of travelling mechanisms according to ground sample lines, adjusting the level and the verticality → connecting a saddle assembly I5 with the travelling mechanisms through a shaft → hoisting a portal end beam 3 and a portal beam 4 assembly to the four groups of travelling mechanisms → trimming the allowance between the portal end beam 3 and the saddle assembly I5 and manually grooving → welding a closed welding seam between the portal end beam 3 and a saddle assembly I5 from a preset portal end beam 3 internal process hole 1, and in order to ensure the requirement of full penetration of the welding seam, welding the inside of the portal end beam 3 by external carbon → assembling and welding a reinforcing triangular plate 6 outside the saddle assembly I → plugging the process hole 1 preset in the portal end beam.
As shown in the background fig. 5, the closed weld of the portal end beam 3 and the saddle assembly I5 requires full penetration, and the welding mode is box internal welding, box external carbon planing and welding.
The following problems exist in the operation process:
firstly, after allowance trimming and groove opening are finished, a crane for hoisting the assembly of the portal end beam 3 and the portal cross beam 4 can be unhooked, and the ineffective operation time of the crane is prolonged;
secondly, the difficulty and poor forming of manual groove cutting on site affect the welding quality of subsequent closure seams;
thirdly, the internal operation space of the portal end beam 3 is narrow, the welding difficulty of the closure welding line between the portal end beam 3 and the saddle assembly I5 is increased, the welding line quality is not easy to guarantee, and the danger of construction is increased by the operation in the narrow space;
fourthly, the damage of external carbon planing operation to the surrounding intact paint surface is large;
fifthly, when a folded welding seam between the portal end beam 3 and the saddle assembly I5 is welded, the angular deformation of the middle end beam flange plate 7 of the saddle assembly I5 is easily caused;
sixthly, the stress of the bolt is easily increased;
seventhly, the operation space inside the portal end beam 3 is narrow, the difficulty of plugging the fabrication hole 1 inside the portal end beam 3 in advance is increased, and the operation in the narrow space increases the construction risk.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: provides a more optimized large-assembly manufacturing process. The construction difficulty and the construction danger of operation in a narrow space inside the portal end beam are avoided; the construction difficulty of on-site manual groove cutting and the risk that the subsequent closed seam welding quality is influenced due to poor forming of the manual groove cutting are avoided; the flange plate angle deformation and the bolt stress generated when the closure seam welding between the portal end beam and the saddle assembly I is carried out are reduced; the invalid operation of the crane and the damage of the intact paint surface caused by hoisting the portal end beam and portal beam assembly are reduced; the manufacturing cost is reduced.
In order to solve the above technical problems, the present invention provides: a manufacturing process for folding an end beam and a traveling mechanism of a portal crane portal frame comprises the following steps:
firstly, welding a coaming and a portal end beam flange plate to form a lower connecting support;
secondly, machining a flange plate in the lower connecting support;
when the portal end beam and the portal cross beam are folded to form a combined member, the lower connecting supports are preassembled, steel seal numbers are knocked in the thickness direction of the flange plate of each lower connecting support, and the steel seal number of each lower connecting support is unique;
when the large group is folded, the saddle is connected with the lower connecting support through bolts to form a saddle assembly II;
fifthly, when the large group is folded, connecting the saddle assembly II with the walking mechanism through a shaft;
hoisting the portal frame end beam and portal frame cross beam assembly to four groups of travelling mechanisms;
and seventhly, welding a folding welding seam between the portal end beam and the saddle assembly II.
Furthermore, in the third step, during preassembly, the length direction and the width direction use the structural center line of the assembly as a reference, and the positioning of the lower connecting support is carried out according to the size required by the structural diagram; the lower connecting support is aligned with a hard stop of the portal end beam;
furthermore, in the third step, when in preassembly, the flange surfaces of the lower connecting supports are ensured to be in the same horizontal plane by adjusting the gaps between the lower connecting supports and the portal frame end beam in the height direction;
further, the gap is 4-12 mm;
further, after positioning is finished, assembling a steel gasket at a gap inside the box body of the lower connecting support, wherein the steel gasket is only welded with the lower connecting support;
furthermore, when the large group is folded, a ceramic liner is pasted at the gap outside the box body of which the lower part is connected with the support;
furthermore, when the large group is folded, the folding seam welding mode of the portal end beam and the saddle assembly II is full penetration, and the welding mode of the one-circle welding seam is liner welding and is only welded outside the box body.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, a pad welding process method is adopted for a folding seam between the lower connecting support and the portal end beam, a steel pad is pasted in a gap on the inner side of the box body of the lower connecting support, a ceramic pad is pasted in a gap on the outer side of the box body of the lower connecting support, and welding is only needed outside the box body. Therefore, the fabrication hole which is pre-arranged on the portal end beam and is arranged for completing the folding seam between the lower connecting support and the portal end beam can be eliminated, and the construction difficulty and the construction danger of subsequently blocking the fabrication hole in the narrow space in the portal end beam are avoided; the construction difficulty and the construction danger of welding a closure joint in a narrow space inside the portal end beam are avoided; meanwhile, the welding seam of the liner is formed in a single-side welding and double-side forming mode, so that carbon planing operation is not needed, and damage to the intact paint surface is avoided. Therefore, the pre-release, folding and trimming allowance of the portal end beam and the saddle assembly I can be eliminated, and the groove prefabrication work of the corresponding part is finished in the part stage in advance. The construction difficulty of manual trimming and cutting allowance and cutting of the groove on site is avoided, and the ineffective operation time of a crane during hoisting of a portal end beam and portal cross beam assembly is reduced; the risk that the welding quality of the subsequent closed seam is influenced due to poor forming of the field manual cutting groove is avoided.
2. The invention divides and combines the end beam structure and the saddle assembly I structure again, and connects the lower connecting support with the saddle to form the saddle assembly II, thereby reducing the flange plate angular deformation and the bolt stress generated when the closure weld between the portal end beam and the saddle assembly I is welded.
Drawings
Fig. 1-5 are background views.
Fig. 6 is a structural view of an end beam of the portal frame of the present invention.
Fig. 7-8 are schematic views of the combination of the portal end beam and the saddle assembly II of the present invention.
Fig. 9 is a structural schematic view of the lower connecting support of the invention.
Fig. 10-12 are pre-assembled views of the "lower link bracket" and "door frame end beam and door frame cross beam assembly" of the present invention.
Fig. 13-14 are schematic diagrams of a preloaded reference line of the present invention.
FIG. 15 is a schematic view of the pre-assembly gap of the present invention.
FIG. 16 is a schematic view of the present invention showing the steel gasket assembled in the gap during pre-assembly.
Fig. 17 is a structural schematic view of a saddle assembly II of the present invention.
Fig. 18-19 are schematic views of the seaming welding of the end beam of the portal of the present invention with the "saddle assembly II".
FIG. 20 is a schematic diagram of the main manufacturing sequence of the large-scale assembly operation in the field.
In the figure, 1, a fabrication hole, 2, a folding opening, 3, a portal end beam, 4, a portal cross beam, 5, a saddle assembly I, 6, a triangular plate, 7, an end beam flange plate, 8, a saddle, 9, a saddle assembly II, 10, a coaming, 11, a lower connecting support, 12, a steel gasket and 13, a ceramic gasket.
Detailed Description
As shown in FIG. 6, the invention eliminates the technical hole 1 pre-arranged on the portal end beam 3; the pre-release folding trimming allowance of the portal end beam 3 and the saddle assembly I5 is eliminated, and the groove machining of the corresponding part can be completed in the part stage.
As shown in fig. 7-8, the mast end beam 3 structure is subdivided and combined with the "saddle assembly I5" structure.
As shown in fig. 9, the shroud 10 of the portal end beam 3 structure is instead first welded to the end beam flange plate 7 to form a "lower attachment pedestal 11".
As shown in fig. 10 to 12, "lower connecting brackets 11" are preassembled with "the assembly of the gantry end beam 3 and the gantry cross beam 4" and steel marks are punched in the thickness direction of the flange plate of each "lower connecting bracket 11", each "lower connecting bracket 11" has a unique steel mark, and the position of each "lower connecting bracket 11" is recorded on a "lower connecting bracket 11" preassembly record chart ".
As shown in fig. 13-14, during pre-assembly, the length and width directions are referenced to the structural centerline of the assembly, and the "lower attachment brackets 11" are positioned according to the desired dimensions of the structural map. And simultaneously, the lower connecting support 11 is aligned with the hard stop of the portal end beam 3.
As shown in fig. 15, during preassembly, the gap between each lower connecting support 11 and the gantry end beam 3 is controlled to be 4-12 mm in the height direction by adjusting the gap, so that the flange surfaces of the lower connecting supports 11 are ensured to be on the same horizontal plane, and a level meter is used for detection.
As shown in fig. 16, after the preassembly positioning is completed, the steel gasket 12 is assembled in the gap inside the box body of the lower connecting support 11, and at the moment, the steel gasket 12 is only welded with the lower connecting support 11.
As shown in figure 17, when the large-scale combination is assembled on site, the saddle 8 and the lower connecting support 11 are connected by using a process bolt to form a saddle assembly II 9.
As shown in fig. 18-19, the seaming of the portal end beam 3 to the "saddle assembly II 9" requires full penetration, with a one-pass seam weld being a pad weld. The gap-bound steel lining 12, which is located inside the housing of the "lower connecting bracket 11", has already been completed when the "lower connecting bracket 11" is preassembled with the "assembly of the portal end beam 3 and the portal cross beam 4", see fig. 14. And a ceramic liner 13 is adhered to a gap positioned outside the box body of the lower connecting support 11. Are all welded outside the box body.
As shown in fig. 20, the main manufacturing sequence when the field large group is closed is as follows:
the saddle 8 and the lower connecting support 11 are connected by using a process bolt to form a saddle assembly II9 → four groups of running mechanisms are positioned according to the ground sample line, and are adjusted to be horizontal and vertical → the saddle assembly II9 is connected with the corresponding running mechanisms through a shaft according to the preassembly recording chart of the lower connecting support 11, so that the lower connecting support 11 of each steel mark is ensured to be positioned according to the preassembly recording chart of the lower connecting support 11 → the assembly of the portal end beam 3 and the portal cross beam 4 is hoisted to the four groups of running mechanisms → the gap outside the box body of the lower connecting support 11 is attached with the ceramic liner 13. And (3) welding a folding welding seam between the portal end beam 3 and the saddle assembly II 9.
Claims (7)
1. The utility model provides a portal crane portal end beam closes up manufacturing process with running gear which characterized in that: the method comprises the following steps:
firstly, welding a coaming and a portal end beam flange plate to form a lower connecting support;
secondly, machining a flange plate in the lower connecting support;
when the portal end beam and the portal cross beam are folded to form a combined member, the lower connecting supports are preassembled, steel seal numbers are knocked in the thickness direction of the flange plate of each lower connecting support, and the steel seal number of each lower connecting support is unique;
when the large group is folded, the saddle is connected with the lower connecting support through bolts to form a saddle assembly II;
fifthly, when the large group is folded, connecting the saddle assembly II with the walking mechanism through a shaft;
hoisting the portal frame end beam and portal frame cross beam assembly to four groups of travelling mechanisms;
and seventhly, welding a folding welding seam between the portal end beam and the saddle assembly II.
2. A process for manufacturing a portal frame end beam and travelling mechanism closure according to claim 1, wherein the process comprises the following steps: in the third step, when in preassembly, the structural center line of the portal end beam and cross beam assembly is taken as a reference, and the positioning of the lower connecting support is carried out according to the size required by the structural diagram; the lower connecting support is aligned with the hard stop of the portal end beam.
3. A process for manufacturing a portal frame end beam and travelling mechanism closure according to claim 1, wherein the process comprises the following steps: and in the third step, when in preassembly, the flange surfaces of the lower connecting supports are ensured to be in the same horizontal plane by adjusting the gaps between the lower connecting supports and the portal frame end beam in the height direction.
4. A process for manufacturing a portal frame end beam and travelling mechanism closure according to claim 1, as claimed in claim 3, wherein the process comprises the following steps: the gap is 4-12 mm.
5. A process for manufacturing a portal frame end beam and travelling mechanism closure according to claim 1, as claimed in claim 2, wherein the process comprises the following steps: after the positioning is finished, a steel gasket is assembled at the gap on the inner side of the box body of the lower connecting support, and the steel gasket is only welded with the lower connecting support.
6. A process for manufacturing a portal frame end beam and travelling mechanism closure according to claim 1, wherein the process comprises the following steps: when the large group is folded, a ceramic liner is pasted at the gap outside the box body of the lower connecting support.
7. A process for manufacturing a portal frame end beam and travelling mechanism closure according to claim 1, wherein the process comprises the following steps: when the large group is closed, the welding mode of the closing seam of the portal end beam and the saddle assembly II is full penetration, and the welding mode of a circle of welding seam is liner welding and is only welded outside the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208436.6A CN114074894B (en) | 2021-10-18 | 2021-10-18 | Folding manufacturing process for portal frame end beam and travelling mechanism of portal crane |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111208436.6A CN114074894B (en) | 2021-10-18 | 2021-10-18 | Folding manufacturing process for portal frame end beam and travelling mechanism of portal crane |
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| CN114074894A true CN114074894A (en) | 2022-02-22 |
| CN114074894B CN114074894B (en) | 2024-04-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115476064A (en) * | 2022-09-14 | 2022-12-16 | 南通中远海运重工装备有限公司 | Manufacturing process of main beam of tyre gantry crane |
| CN116787020A (en) * | 2023-08-29 | 2023-09-22 | 广州文船重工有限公司 | Portal assembling method of portal crane |
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| CN201209083Y (en) * | 2008-04-22 | 2009-03-18 | 浙江华东机电工程有限公司 | Folding gantry crane |
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| JP2012229071A (en) * | 2011-04-25 | 2012-11-22 | Ihi Infrastructure Systems Co Ltd | Operational construction method by means of goliath crane |
| CN204675653U (en) * | 2015-04-28 | 2015-09-30 | 李莹 | A kind of adjustable transfer crane |
| CN108946498A (en) * | 2018-07-30 | 2018-12-07 | 中铁十六局集团北京轨道交通工程建设有限公司 | A kind of light detachable travelling gantry rack device and its application method |
| CN211971558U (en) * | 2020-03-16 | 2020-11-20 | 浙江省特种设备科学研究院 | Multifunctional intelligent gantry crane |
-
2021
- 2021-10-18 CN CN202111208436.6A patent/CN114074894B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU783197A1 (en) * | 1979-01-12 | 1980-11-30 | Предприятие П/Я А-7255 | Method of self-erecting of gantry crane with bringing together the leg bases in pairs |
| CN201209083Y (en) * | 2008-04-22 | 2009-03-18 | 浙江华东机电工程有限公司 | Folding gantry crane |
| CN201376848Y (en) * | 2009-03-20 | 2010-01-06 | 史胜海 | Large-scale double-tower automatic-elevation hoisting equipment |
| JP2012229071A (en) * | 2011-04-25 | 2012-11-22 | Ihi Infrastructure Systems Co Ltd | Operational construction method by means of goliath crane |
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| CN108946498A (en) * | 2018-07-30 | 2018-12-07 | 中铁十六局集团北京轨道交通工程建设有限公司 | A kind of light detachable travelling gantry rack device and its application method |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115476064A (en) * | 2022-09-14 | 2022-12-16 | 南通中远海运重工装备有限公司 | Manufacturing process of main beam of tyre gantry crane |
| CN115476064B (en) * | 2022-09-14 | 2023-06-30 | 南通中远海运重工装备有限公司 | Manufacturing process of main beam of tyre gantry crane |
| CN116787020A (en) * | 2023-08-29 | 2023-09-22 | 广州文船重工有限公司 | Portal assembling method of portal crane |
| CN116787020B (en) * | 2023-08-29 | 2023-10-24 | 广州文船重工有限公司 | Portal assembling method of portal crane |
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| CN114074894B (en) | 2024-04-05 |
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