CN109926800B - Process method for batch rivet welding of box-type structures - Google Patents
Process method for batch rivet welding of box-type structures Download PDFInfo
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Abstract
The invention relates to a batch rivet welding process method for box-type structures, and belongs to the technical field of coal mine machinery. The method comprises the following steps: preparing before welding, preprocessing hinge holes, manufacturing a tire membrane of a point-group rib plate frame, firmly riveting a structural frame, reinforcing a fixed position by using a rigid support, welding the structural frame and a bottom plate, prewelding a shielding welding seam and a position which is difficult to weld, welding all accessories and an encapsulation cover plate, and removing stress to process and machine the hinge holes. The invention has the beneficial effects that: and packaging twice to complete the assembly. In actual operation, the welding operation time is far longer than that of riveting operation, the operation time of each process is balanced by coordinating the riveting operation time and the welding operation time, and the continuity of batch operation is ensured.
Description
Technical Field
The invention relates to a batch rivet welding process method for box-type structures, and belongs to the technical field of coal mine machinery.
Background
The size of a welding workpiece of the mining equipment of the coal mine machinery is large, and the welding workpiece is mostly in a box-type welding structure. The conventional welding production needs four working procedures: 1. placing a lower plate, spot-welding a transverse rib plate and a longitudinal rib plate on the lower plate, and welding a vertical welding line and a bottom plate welding line after riveting; 2. riveting and assembling accessories such as an inner side column socket, a sleeve and the like, and welding the sleeve and the peripheral welding line of the column socket again; 3. sealing the upper cover plate, and welding the circumferential weld of the upper cover plate for three times; 4. and welding all peripheral accessories after machining the key matching holes. The efficiency of the repetitive operation is low. The yield strength of the selected materials of the coal mine machinery is high, the preheating treatment is needed before welding, the repeated welding operation is serious in waste, and the batch operation is not facilitated.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a process method for batch rivet welding of box-type structures, which adopts two processes, namely assembling a frame moulding bed, hoisting the frame moulding bed on a bottom plate, assembling a column nest, welding a part of shielding welding seams behind a sleeve in advance, ensuring that an open structure can be completely welded, welding an inner side welding seam, riveting a sealing cover plate again, welding peripheral accessories, welding in a rotating way, and packaging twice to finish the assembly.
The invention is realized by the following technical scheme: a process method for batch rivet welding of box-type structures is characterized by comprising the following steps:
(A) drilling all main ribs, transverse rib plates and longitudinal rib plate point groups, and finishing rough machining of hinge holes;
(B) manufacturing a tire membrane of a point-group rib plate frame on a working platform, marking a central line on the tire membrane, marking all main rib position lines, transverse rib plates and longitudinal rib plate position lines, fixing a single-side positioning support on the outer side, and spot-welding a large-opening auxiliary inclined support on the other side;
(C) placing all main ribs, transverse rib plates and longitudinal rib plates at the positions of the workbench corresponding to the marking lines, leaning against a positioning support, adding inclined plugs between an auxiliary inclined support and the rib plates to compact the rib plates, welding a rigid support at a position of opening a gear to form a structural frame of a box structure, correcting the concentricity and the position size of riveting holes by each hinge hole, firmly riveting and reinforcing the size of a fixed position by using the rigid support;
(D) lifting the whole structural frame upwards and placing the structural frame on a workpiece bottom plate, correcting the central line of the structural frame and the central line of the bottom plate to be aligned, correcting the size of an outer frame, checking each size and performing backing weld welding, pre-welding parts to shield a weld joint and positions difficult to weld, assembling all parts below a cover plate, and turning a welding station to weld all inner-side weld joints;
(E) and cutting off all rigid supports, hoisting the cover plate, riveting peripheral accessories, and turning to a welding station again for welding.
The moulding bed, the positioning support and the auxiliary inclined support on the working platform in the step (B) can be used for riveting operation of a lower workpiece;
(F) and (5) stress relief processing and machining the hinge hole.
And (C) only reserving the upward freedom degree of the structural frame to form the structural frame of the box-type structure, ensuring that the structural frame is lifted upwards by using a travelling crane, and riveting all plates influencing the freedom degree when assembling next time.
The invention has the beneficial effects that: and packaging twice to complete the assembly. In actual operation, the welding operation time is far longer than that of riveting operation, the operation time of each process is balanced by coordinating the riveting operation time and the welding operation time, and the continuity of batch operation is ensured.
Drawings
The invention is further illustrated below with reference to the figures and examples.
FIG. 1 is a process flow diagram of the present invention.
Detailed Description
The process method for batch rivet welding of box-type structures as shown in fig. 1 is characterized by comprising the following steps:
(A) drilling all main ribs, transverse rib plates and longitudinal rib plate point groups, and finishing rough machining of hinge holes;
(B) manufacturing a tire membrane of a point-group rib plate frame on a working platform, marking a central line on the tire membrane, marking all main rib position lines, transverse rib plates and longitudinal rib plate position lines, fixing a single-side positioning support on the outer side, and spot-welding a large-opening auxiliary inclined support on the other side;
(C) placing all main ribs, transverse rib plates and longitudinal rib plates at the positions of the workbench corresponding to the marking lines, leaning against a positioning support, adding inclined plugs between an auxiliary inclined support and the rib plates to compact the rib plates, welding a rigid support at a position of opening a gear to form a structural frame of a box structure, correcting the concentricity and the position size of riveting holes by each hinge hole, firmly riveting and reinforcing the size of a fixed position by using the rigid support;
(D) lifting the whole structural frame upwards and placing the structural frame on a workpiece bottom plate, correcting the central line of the structural frame and the central line of the bottom plate to be aligned, correcting the size of an outer frame, checking each size and performing backing weld welding, pre-welding parts to shield a weld joint and positions difficult to weld, assembling all parts below a cover plate, and turning a welding station to weld all inner-side weld joints;
(E) and cutting off all rigid supports, hoisting the cover plate, riveting peripheral accessories, and turning to a welding station again for welding.
The moulding bed, the positioning support and the auxiliary inclined support on the working platform in the step (B) can be used for riveting operation of a lower workpiece;
(F) and (5) stress relief processing and machining the hinge hole.
And (C) only reserving the upward freedom degree of the structural frame to form the structural frame of the box-type structure, ensuring that the structural frame is lifted upwards by using a travelling crane, and riveting all plates influencing the freedom degree when assembling next time.
The invention can complete the assembly of the box-type structure by twice packaging. In actual operation, the welding operation time is far longer than that of riveting operation, the operation time of each process is balanced by coordinating the riveting operation time and the welding operation time, and the continuity of batch operation is ensured.
Claims (3)
1. A process method for batch rivet welding of box-type structures is characterized by comprising the following steps:
(A) drilling all main ribs, transverse rib plates and longitudinal rib plate point groups, and finishing rough machining of hinge holes;
(B) manufacturing a tire membrane of a point-group rib plate frame on a working platform, marking a central line on the tire membrane, marking all main rib position lines, transverse rib plates and longitudinal rib plate position lines, fixing a single-side positioning support on the outer side, and spot-welding a large-opening auxiliary inclined support on the other side;
(C) placing all main ribs, transverse rib plates and longitudinal rib plates at the positions of the workbench corresponding to the marking lines, leaning against a positioning support, adding inclined plugs between an auxiliary inclined support and the rib plates to compact the rib plates, welding a rigid support at a position of opening a gear to form a structural frame of a box structure, correcting the concentricity and the position size of riveting holes by each hinge hole, firmly riveting and reinforcing the size of a fixed position by using the rigid support;
(D) lifting the whole structural frame upwards and placing the structural frame on a workpiece bottom plate, correcting the central line of the structural frame and the central line of the bottom plate to be aligned, correcting the size of an outer frame, checking each size and performing backing weld welding, pre-welding parts to shield a weld joint and positions difficult to weld, assembling all parts below a cover plate, and turning a welding station to weld all inner-side weld joints;
(E) cutting off all rigid supports, hoisting a cover plate, riveting peripheral accessories, and turning to a welding station again for welding;
(F) and (5) stress relief processing and machining the hinge hole.
2. The batch rivet welding process method for box-type structures according to claim 1, characterized in that: and (B) the moulding bed, the positioning support and the auxiliary inclined support on the working platform can be used for riveting operation of the lower workpiece.
3. The batch rivet welding process method for box-type structures according to claim 1, characterized in that: and (C) only reserving the upward freedom degree of the structural frame to form the structural frame of the box-type structure, ensuring that the structural frame is lifted upwards by using a travelling crane, and riveting all plates influencing the freedom degree when assembling next time.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910275988.5A CN109926800B (en) | 2019-04-08 | 2019-04-08 | Process method for batch rivet welding of box-type structures |
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| CN201910275988.5A CN109926800B (en) | 2019-04-08 | 2019-04-08 | Process method for batch rivet welding of box-type structures |
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| CN109926800A CN109926800A (en) | 2019-06-25 |
| CN109926800B true CN109926800B (en) | 2021-02-12 |
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| CN110871328B (en) * | 2019-10-31 | 2021-08-10 | 上海振华重工(集团)股份有限公司南通分公司 | Manufacturing process of ultra-large rail crane girder structure |
Citations (7)
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| CN203356902U (en) * | 2012-09-02 | 2013-12-25 | 山西晋城无烟煤矿业集团有限责任公司 | Hydraulic support structural component quick positioning device |
| CN203769819U (en) * | 2014-03-21 | 2014-08-13 | 中煤北京煤矿机械有限责任公司 | Box-type base column nest structure |
| CN205977250U (en) * | 2016-08-26 | 2017-02-22 | 兖矿集团有限公司 | Novel box type substructure needling device |
| KR20180039820A (en) * | 2016-10-11 | 2018-04-19 | 에스탱크엔지니어링(주) | Fixing jig for shell and Welding apparatus using it |
| CN108526742A (en) * | 2018-04-26 | 2018-09-14 | 郑州煤矿机械集团股份有限公司 | Hydraulic support column nest method for assembling and welding |
| CN108907575A (en) * | 2018-08-28 | 2018-11-30 | 郑州立德机电设备有限公司 | A kind of hydraulic support top beam tailor-welding tool |
| CN208184759U (en) * | 2018-05-07 | 2018-12-04 | 郑州煤矿机械集团股份有限公司 | Seperated advance timbering top beam |
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2019
- 2019-04-08 CN CN201910275988.5A patent/CN109926800B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203356902U (en) * | 2012-09-02 | 2013-12-25 | 山西晋城无烟煤矿业集团有限责任公司 | Hydraulic support structural component quick positioning device |
| CN203769819U (en) * | 2014-03-21 | 2014-08-13 | 中煤北京煤矿机械有限责任公司 | Box-type base column nest structure |
| CN205977250U (en) * | 2016-08-26 | 2017-02-22 | 兖矿集团有限公司 | Novel box type substructure needling device |
| KR20180039820A (en) * | 2016-10-11 | 2018-04-19 | 에스탱크엔지니어링(주) | Fixing jig for shell and Welding apparatus using it |
| CN108526742A (en) * | 2018-04-26 | 2018-09-14 | 郑州煤矿机械集团股份有限公司 | Hydraulic support column nest method for assembling and welding |
| CN208184759U (en) * | 2018-05-07 | 2018-12-04 | 郑州煤矿机械集团股份有限公司 | Seperated advance timbering top beam |
| CN108907575A (en) * | 2018-08-28 | 2018-11-30 | 郑州立德机电设备有限公司 | A kind of hydraulic support top beam tailor-welding tool |
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