CN103785930A - Micro-distortion welding method of middle groove of scraper conveyer - Google Patents
Micro-distortion welding method of middle groove of scraper conveyer Download PDFInfo
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- CN103785930A CN103785930A CN201410019819.2A CN201410019819A CN103785930A CN 103785930 A CN103785930 A CN 103785930A CN 201410019819 A CN201410019819 A CN 201410019819A CN 103785930 A CN103785930 A CN 103785930A
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- 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
- B23K9/00—Arc welding or cutting
- B23K9/16—Arc welding or cutting making use of shielding gas
- B23K9/173—Arc welding or cutting making use of shielding gas and of a consumable electrode
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Abstract
The invention relates to a micro-distortion welding method of a middle groove of a scraper conveyer. The micro-distortion welding method is suitable for producing the middle groove of the scraper conveyer of a mining working face of an underground coal mine. The micro-distortion welding method is characterized by including the steps of firstly inversely arranging a shovel plate ledge (3) and a baffle ledge (1), assembling a middle plate (2) on the shovel plate ledge (3) and the baffle ledge (1), meanwhile, completing welding to back welding lines in the middle plate (2) through narrow-gap MAG welding, then assembling a bottom sealing plate (4) to accordingly form a box-type structure, finally overturning the whole box-type structure to enable the shovel plate ledge (3) and the baffle ledge (1) to be placed in the forward direction in a recovered mode, and welding front welding lines in the middle plate (2) and welding lines in the bottom sealing plate (4) through narrow-gap MAG welding. The micro-distortion welding method is efficient and can be used for manufacturing the middle groove of the scraper conveyer under the coal mine, traditional assembling and welding technological processes of the middle groove are effectively changed during welding, and the welding distortion is effectively controlled.
Description
Technical field
The micro-distortion assembling and welding process that the present invention relates to a kind of the middle pan of scraper conveyor, is applicable to the production of the middle pan of scraper conveyor of colliery underground mining working face.
Background technology
The middle pan of scraper conveyor is welded by baffle, shovel board ledge, middle plate, back cover base plate, for transporting coal and material, by scraper chain, coal and the dilatory unloading end that slides into of material is unloaded.Generally adopt at present traditional assembly welding method, first by baffle, shovel board ledge, middle plate point to after having welded, then assemble back cover plate, when actual welding due to middle plate and base plate size large, structural rigidity is large, cooling velocity is fast, welding constraint stress is large, and cold cracking sensitivity is higher.Simultaneously at the bottom of loaded down with trivial details, the efficiency of operation.
The middle pan of scraper conveyor of for example certain model is made up of baffle, shovel board ledge, middle plate, back cover plate, and its assembling and welding process is: shovel board ledge, baffle, middle plate are first fitted together, then use CO
2gas shield welding method positive and negative has alternately welded the two-sided V weld seam of middle plate; finally assemble back cover plate; complete back cover plate welding; find through long-term use, adopt in this way, for guaranteeing the intensity of intermediate channel; not only middle plate grooves of welding joints is large; and in welding process, be difficult to control welding deformation, technological process is loaded down with trivial details, and efficiency is low.
Summary of the invention
The object of this invention is to provide a kind of micro-distortion assembling and welding process of the middle pan of scraper conveyor, can on the basis that guarantees intermediate channel structural strength, reduce welding cost and improve welding efficiency simultaneously.
A kind of micro-distortion assembling and welding process of the middle pan of scraper conveyor, its special feature is, comprise the steps: first shovel board ledge and baffle to be oppositely inverted, plate in first assembling on shovel board ledge and baffle, be soldered into the welding of middle plate sealing run with narrow gap MAG simultaneously, and then thereby assembling back cover plate becomes box-structure, finally make shovel board ledge and baffle recover forward the upset of whole box-structure and place, then weld centering plate fillet in normal shear and back cover plate weld seam welds with narrow gap MAG.
Wherein the cross section of middle plate sealing run is isosceles right triangle, and the cross section of middle plate fillet in normal shear is right-angled trapezium.
Be wherein that 50mm calculates according to the thickness of middle plate, in the cross section of middle plate fillet in normal shear, upper bottom side length is 2-3mm, and the length of side of going to the bottom is 7-10mm, and the right angle length of side is 40-46mm, and in the cross section of middle plate sealing run, the right angle length of side is 4-10mm.
Wherein shovel board ledge and baffle are oppositely inverted after referring to the shovel board ledge will forward placed and baffle Rotate 180 degree and are placed.
Wherein in assembling, after plate, first just shovel board ledge, baffle and middle plate point are fitted together.
Wherein decorate refer to by dimensional requirement with welding method be fixed together.
The invention provides a kind of assembling and welding process of efficient micro-distortion, can, for the manufacture of coal mine lower scraping plate conveyer intermediate channel, in the time of welding, effectively change traditional intermediate channel assembly welding technique flow process, and effectively control welding deformation.Through evidence, can reduce welding material and consume more than 40%, to compare with conventional method, welding quality stable, can increase work efficiency more than 150%.
Accompanying drawing explanation
The intermediate channel structural representation that accompanying drawing 1 obtains for the inventive method;
The middle plate welding schematic diagram that accompanying drawing 2 obtains for the assembly welding method in background technology of the present invention, the wherein thickness of plate in h representative;
The middle plate welding schematic diagram that accompanying drawing 3 obtains for assembling and welding process of the present invention, the wherein thickness of plate in H representative.
The specific embodiment
As shown in Figure 1,3, the present invention is a kind of process for a welding equipment of colliery underground scraper conveyor intermediate channel base plate, by plate 2 in traditional first assembling, after middle plate 2 assembly weldings complete, the process of assembling again back cover plate 4 changes the process of middle plate 2, back cover plate 4 disposable assemblings into, to reach the effect of effectively controlling welding deformation in the time welding, is guaranteeing on the basis of structural strength, reduce welding cost, improve welding efficiency simultaneously.Because the slope type of middle plate 2 fronts, sealing run changes to some extent, loading is reduced.Because welding method changes to some extent, cause welding process heat input little, welding deformation amount is reduced, optimized technological process simultaneously.
Embodiment 1:
First will after shovel board ledge 3 and baffle 1 Rotate 180 degree, oppositely be inverted, plate 2 in first assembling on shovel board ledge 3 and baffle 1, (in dress, after plate 2, can first decorate, press drawing dimensional requirement by plate 2 in shovel board ledge 3 and baffle 1, with welding method be fixed together, certainly this is decorated step and also can omit) be soldered into the welding of middle plate 2 sealing runs with narrow gap MAG, and then thereby assembling back cover plate 4 becomes box-structure, then whole box-structure being turned over to turnback makes shovel board ledge 3 and baffle 1 recover forward placement (being the position of intermediate channel shown in Fig. 1), weld with narrow gap MAG weldering centering plate 2 fillets in normal shear and back cover plate 4 weld seams again.
As shown in Figure 2, as shown in Figure 3, the loading of visible traditional weld shape wlding is more than 2 times of weld seam wlding loading of the present invention for middle backboard face of the present invention, fillet in normal shear shape for the middle backboard face of background technology, fillet in normal shear shape.
Wherein the cross section of middle plate 2 sealing runs is isosceles right triangle, and the cross section of middle plate 2 fillets in normal shear is right-angled trapezium.The thickness H of middle plate 2 is 50mm, and in the cross section of middle plate 2 fillets in normal shear, upper bottom side length is 2mm, and the length of side of going to the bottom is 9mm, and the right angle length of side is 42mm, and the cross section right angle length of side of middle plate 2 sealing runs is 6mm.
The inventive method and conventional method are compared as follows table:
After central plate 2 fronts, sealing run form have been welded, take flute length 1750mm, groove width 1000mm intermediate channel as example, by traditional welding method in background technology, welding deformation amount is 10mm～15mm, and by groove type of the present invention and after adopting narrow gap MAG to weld, deflection is 2mm～3mm, and welding deformation amount obviously reduces.
Claims (6)
1. micro-distortion assembling and welding process of a middle pan of scraper conveyor, it is characterized in that, comprise the steps: first shovel board ledge (3) and baffle (1) to be oppositely inverted, first plate (2) in shovel board ledge (3) and the upper assembling of baffle (1), be soldered into the welding of middle plate (2) sealing run with narrow gap MAG simultaneously, and then assembling back cover plate (4) thus become box-structure, finally making shovel board ledge (3) and baffle (1) recover forward whole box-structure upset places, weld with narrow gap MAG weldering centering plate (2) fillet in normal shear and back cover plate (4) weld seam again.
2. micro-distortion assembling and welding process of the middle pan of scraper conveyor as claimed in claim 1, is characterized in that: wherein, the cross section of plate (2) sealing run is isosceles right triangle, and the cross section of middle plate (2) fillet in normal shear is right-angled trapezium.
3. micro-distortion assembling and welding process of the middle pan of scraper conveyor as claimed in claim 2, it is characterized in that: be wherein that 50mm calculates according to the thickness of middle plate (2), in the cross section of middle plate (2) fillet in normal shear, upper bottom side length is 2-3mm, the length of side of going to the bottom is 7-10mm, the right angle length of side is 40-46mm, and in the cross section of middle plate (2) sealing run, the right angle length of side is 4-10mm.
4. micro-distortion assembling and welding process of the middle pan of scraper conveyor as claimed in claim 1, is characterized in that: wherein shovel board ledge (3) and baffle (1) are oppositely inverted after referring to the shovel board ledge (3) will forward placed and baffle (1) Rotate 180 degree and are placed.
5. micro-distortion assembling and welding process of the middle pan of scraper conveyor as described in any one in claim 1 to 4, is characterized in that: wherein in assembling, after plate (2), first just shovel board ledge (3), baffle (1) and middle plate (2) point are fitted together.
6. micro-distortion assembling and welding process of the middle pan of scraper conveyor as claimed in claim 1, is characterized in that: wherein decorate refer to by dimensional requirement with welding method be fixed together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019819.2A CN103785930B (en) | 2014-01-17 | 2014-01-17 | The Light deformation assembling and welding process of the middle pan of scraper conveyor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410019819.2A CN103785930B (en) | 2014-01-17 | 2014-01-17 | The Light deformation assembling and welding process of the middle pan of scraper conveyor |
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| CN103785930A true CN103785930A (en) | 2014-05-14 |
| CN103785930B CN103785930B (en) | 2016-04-20 |
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| CN201410019819.2A Active CN103785930B (en) | 2014-01-17 | 2014-01-17 | The Light deformation assembling and welding process of the middle pan of scraper conveyor |
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Citations (7)
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|---|---|---|---|---|
| US5156258A (en) * | 1990-11-27 | 1992-10-20 | Westfalia Becorit Industrietechnik Gmbh | Scraper-chain conveyors for use in mineral mining |
| US6401912B1 (en) * | 1999-10-26 | 2002-06-11 | Clarence L. Bandy, Jr. | Conveyor pan assembly with replaceable deck |
| CN1458049A (en) * | 2002-05-17 | 2003-11-26 | Dbt有限公司 | Chute section |
| CN1458048A (en) * | 2002-05-17 | 2003-11-26 | Dbt有限公司 | Chute section |
| CN102513660A (en) * | 2011-12-16 | 2012-06-27 | 连云港天明装备有限公司 | Large middle trough welding method |
| CN103387113A (en) * | 2013-07-02 | 2013-11-13 | 云南农垦科赛特机械制造有限公司 | Production process of middle trough of scraper conveyor |
| CN103466313A (en) * | 2013-09-17 | 2013-12-25 | 肖宁 | Feeding machine for medium plate and steel channel |
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2014
- 2014-01-17 CN CN201410019819.2A patent/CN103785930B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5156258A (en) * | 1990-11-27 | 1992-10-20 | Westfalia Becorit Industrietechnik Gmbh | Scraper-chain conveyors for use in mineral mining |
| US6401912B1 (en) * | 1999-10-26 | 2002-06-11 | Clarence L. Bandy, Jr. | Conveyor pan assembly with replaceable deck |
| CN1458049A (en) * | 2002-05-17 | 2003-11-26 | Dbt有限公司 | Chute section |
| CN1458048A (en) * | 2002-05-17 | 2003-11-26 | Dbt有限公司 | Chute section |
| CN102513660A (en) * | 2011-12-16 | 2012-06-27 | 连云港天明装备有限公司 | Large middle trough welding method |
| CN103387113A (en) * | 2013-07-02 | 2013-11-13 | 云南农垦科赛特机械制造有限公司 | Production process of middle trough of scraper conveyor |
| CN103466313A (en) * | 2013-09-17 | 2013-12-25 | 肖宁 | Feeding machine for medium plate and steel channel |
Non-Patent Citations (7)
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| 宋永刚等: "中部槽焊接过程中的热变形机理分析", 《煤矿机械》 * |
| 李晋霞: "中部槽端头的热处理及焊接工艺改进", 《能源技术与管理》 * |
| 王勇等: "刮板输送机中部槽组对工装的设计和使用", 《矿山机械》 * |
| 罗春信: "中部槽设计和焊接工艺的改进", 《煤矿机械》 * |
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| 黄东风等: "中部槽焊接变形的控制", 《煤矿机械》 * |
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| CN103785930B (en) | 2016-04-20 |
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