CN111318597A - Jig frame device and method for machining and manufacturing steel tube arch rib - Google Patents
Jig frame device and method for machining and manufacturing steel tube arch rib Download PDFInfo
- Publication number
- CN111318597A CN111318597A CN202010245385.3A CN202010245385A CN111318597A CN 111318597 A CN111318597 A CN 111318597A CN 202010245385 A CN202010245385 A CN 202010245385A CN 111318597 A CN111318597 A CN 111318597A
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- arch rib
- frame device
- jig frame
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 107
- 239000010959 steel Substances 0.000 title claims abstract description 107
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000003754 machining Methods 0.000 title description 2
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000005452 bending Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 14
- 238000010276 construction Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D7/00—Bending rods, profiles, or tubes
- B21D7/06—Bending rods, profiles, or tubes in press brakes or between rams and anvils or abutments; Pliers with forming dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
A jig frame device and a method for processing and manufacturing steel tube arch ribs are provided. The device comprises two main beams, a plurality of secondary beams, a planar steel plate, a plurality of pad beams, a plurality of clamping plates and a plurality of inclined supporting beams; the jig frame device and the method for processing and manufacturing the steel tube arch rib have the advantages that the operation process and the used equipment are simple, the accurate control is easy in the construction process, and the defects of a traditional method of 'direct instead of curved' sectional welding method are overcome. The steel pipe arch rib is integrally bent and formed, so that the workload of steel pipe splicing is greatly reduced, cross welding seams are reduced, the welding seam quality is ensured, a good and stable operation platform is provided, and the manufacturing period is shortened; the integral quality is good, the linear shape is smooth, and the phenomenon of obvious splicing, folding and protruding is avoided; the residual stress of the welding line is reduced because the molecular motion of the welding area is strengthened and the residual stress is released due to the heating action in the bending process; the deformation factors of the steel pipe arch rib caused by human and environmental influences are reduced.
Description
Technical Field
The invention belongs to the technical field of railway engineering construction, and particularly relates to a jig frame device and a method for processing and manufacturing steel pipe arch ribs.
Background
In recent years, with the rapid development of the traffic industry of high-speed railways in China, the high-speed rails in China enter a rapid development stage. The steel pipe tied arch bridge is widely applied to high-speed rail construction, is a bridge structure form with strong spanning capability, beautiful appearance and wide application, and is a bridge structure integrating the advantages of an arch structure and a beam structure. The steel tube arch rib is used as the most main stressed structure of the steel tube tied arch bridge, the quality of the processing and manufacturing quality of the steel tube tied arch bridge is a key link influencing the steel tube tied arch bridge, and when the steel tube arch rib is processed and manufactured in the past, a sectional welding method of 'replacing a curve with a straight line' is adopted in the traditional method. The steel tube arch rib is processed by 'straight instead of curved', the number of annular welding seams is large, and the number of T-shaped welding seams is large, so that the stress fatigue source of the steel tube arch rib can be increased, and the stress of the structure is unfavorable. In addition, a 'flame bending' technology is needed, but because no effective foundation is used for supporting, the flame bending has a plurality of unstable factors in the processing process, so that the processing effect of the steel pipe arch rib is influenced, and the processing precision and the welding quality of the steel pipe arch rib are influenced finally.
Disclosure of Invention
In order to solve the problems, the invention aims to provide a jig frame device and a method for processing and manufacturing a steel tube arch rib.
In order to achieve the purpose, the jig frame device for processing and manufacturing the steel tube arch rib comprises two main beams, a plurality of secondary beams, a planar steel plate, a plurality of cushion beams, a plurality of clamping plates and a plurality of inclined supporting beams; wherein the two main beams are arranged in parallel; the secondary beams are arranged between the two main beams in a parallel mode with the main beams; the bottom surface of the plane steel plate is connected with the upper ends of the main beam and the secondary beam simultaneously; the lower ends of the cushion beams are fixed on the surface of the plane steel plate in a mode of being vertical to the main beam, and the intervals are equal, so that the underframe is formed; one side face of each clamping plate is an 1/4 arc surface, the lower end of each clamping plate is fixed on the surface of a plane steel plate between two adjacent backing beams, the connecting lines of the plurality of clamping plates on the plane steel plate have the same camber as the steel pipe arch ribs, and the arc surfaces are positioned on the same side; the upper end of each inclined supporting beam is fixed on the other side surface of one clamping plate, and the lower end of each inclined supporting beam is fixed on the surface of the planar steel plate.
The main beam adopts H-shaped steel with the size of 500 × 500 × 16 × 24 mm.
The secondary beams are H-shaped steel with the size of 300 × 300 × 10 × 14mm, the adjacent secondary beams are uniformly arranged, and the distance between the adjacent secondary beams is 1 m.
The pad beams are 10mm channel steel, and the distance between every two adjacent pad beams is 1 m.
The diameter of the arc surface on the clamping plate is 1m, and the center of the arc surface and the center of the steel pipe arch rib are positioned on the same horizontal line.
The thickness of the plane steel plate is 30mm, and the material is Q235 steel.
The inclined support beam adopts H-shaped steel with the size of 250 × 250 × 8 × 12 mm.
The method for processing and manufacturing the steel tube arch rib comprises the following steps in sequence:
1) firstly assembling a jig frame device: the method comprises the following steps that workers make two main beams, a plurality of secondary beams, a planar steel plate and a plurality of pad beams into a bottom frame, and the top surface elevations of the pad beams are detected by a leveling instrument so as to ensure that the top surfaces of all the pad beams are positioned on the same horizontal plane; then according to design FIG. 1: 1, setting out the height value of a single steel pipe chord of a setting-out, popping the steel pipe chord by using ink line setting-out on the surface of a planar steel plate positioned between pad beams, then installing a plurality of clamping plates at marks in a mode that an arc surface is positioned at the same side, then fixing the upper end of each inclined supporting beam on the other side surface of one clamping plate, and fixing the lower end of each inclined supporting beam on the surface of the planar steel plate, wherein the center of the arc surface on each clamping plate and the center of a steel pipe arch rib to be manufactured are positioned on a horizontal line;
2) flame bending: the circular tube is placed on a pad beam positioned on one side of the arc surface on the clamping plate, external force is applied to the circular tube in the direction of the clamping plate by a jack, the circular tube is symmetrically heated from two ends to the center direction by flame sprayed by a baking gun, the heating temperature is 900-1000 ℃, the heating temperature is controlled by an infrared thermometer, the circular tube is softened due to heating in the heating process and finally abuts against the arc surfaces of the clamping plates, the purpose of flame bending is achieved, processing is finished before the temperature is reduced to 800 ℃, finally, the steel tube arch rib 8 is manufactured by slowly and naturally cooling to the room temperature, and then flaw detection is carried out on the steel tube arch rib 8 by ultrasonic waves and rays so as to ensure that the steel tube arch rib 8 meets the design requirements.
The jig frame device and the method for processing and manufacturing the steel tube arch rib have the advantages that the operation process and the used equipment are simple, the accurate control is easy in the construction process, and the defects of a traditional method of 'direct instead of curved' sectional welding method are overcome. The steel pipe arch rib is integrally bent and formed, so that the workload of steel pipe splicing is greatly reduced, cross welding seams are reduced, the welding seam quality is ensured, a good and stable operation platform is provided, and the manufacturing period is shortened; the integral quality is good, the linear shape is smooth, and the phenomenon of obvious splicing, folding and protruding is avoided; the residual stress of the welding line is reduced because the molecular motion of the welding area is strengthened and the residual stress is released due to the heating action in the bending process; the deformation factors of the steel pipe arch rib caused by human and environmental influences are reduced.
Drawings
Fig. 1 is a schematic structural diagram of a jig frame device for processing and manufacturing a steel tube arch rib provided by the invention.
Detailed Description
The invention provides a jig frame device and a method for processing and manufacturing steel tube arch ribs, which are described in detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, the jig frame device for processing and manufacturing steel tube arch ribs provided by the invention comprises two main beams 1, a plurality of secondary beams 2, a planar steel plate 3, a plurality of pad beams 4, a plurality of clamping plates 5 and a plurality of inclined supporting beams 6; wherein, the two main beams 1 are arranged in parallel; the secondary beams 2 are arranged between the two main beams 1 in a manner of being parallel to the main beams 1; the bottom surface of the plane steel plate 3 is simultaneously connected with the upper ends of the main beam 1 and the secondary beam 2; the lower ends of a plurality of pad beams 4 are fixed on the surface of the plane steel plate 3 in a mode of being vertical to the main beam 1, and the intervals are equal, so that the underframe is formed; one side surface of each clamping plate 5 is an 1/4 arc surface, the lower end of each clamping plate 5 is fixed on the surface of the planar steel plate 3 between two adjacent backing beams 4, the connecting lines of the plurality of clamping plates 5 on the planar steel plate 3 are the same as the camber of the steel pipe arch ribs 8, and the arc surfaces are positioned on the same side; the upper end of each inclined supporting beam 6 is fixed on the other side surface of one clamping plate 5 and used for resisting the impact of horizontal force applied to the clamping plate 5 so as to prevent damage, and the lower end of each inclined supporting beam is fixed on the surface of the plane steel plate 3.
The main beam 1 adopts H-shaped steel with the size of 500 × 500 × 16 × 24 mm.
The secondary beams 2 are made of H-shaped steel with the size of 300 × 300 × 10 × 14mm, the adjacent secondary beams 2 are uniformly arranged, and the distance is 1 m.
The pad beams 4 are 10mm channel steel, and the distance between every two adjacent pad beams 4 is 1 m.
The diameter of the arc surface on the clamping plate 5 is 1m, and the center of the arc surface and the center of the steel pipe arch rib 8 are positioned on the same horizontal line.
The thickness of the plane steel plate 3 is 30mm, and the material is Q235 steel.
The inclined support beam 6 adopts H-shaped steel with the size of 250 × 250 × 8 × 12 mm.
The method for processing and manufacturing the steel tube arch rib comprises the following steps in sequence:
1) firstly assembling a jig frame device: the method comprises the following steps that workers make two main beams 1, a plurality of secondary beams 2, a planar steel plate 3 and a plurality of pad beams 4 into a bottom frame, and detect the top surface elevations of the pad beams 4 by using a level gauge so as to ensure that the top surfaces of all the pad beams 4 are positioned on the same horizontal plane; then according to design FIG. 1: 1, the chord height value of a single steel pipe subjected to lofting is popped out on the surface of a planar steel plate 3 positioned between pad beams 4 by ink line lofting, then a plurality of clamping plates 5 are arranged at marks in a mode that arc surfaces are positioned at the same side, the arch camber of an arch rib in the embodiment is in a secondary parabola shape, then the upper end of each inclined supporting beam 6 is fixed on the other side surface of one clamping plate 5 and used for resisting the impact of horizontal force on the clamping plates 5 so as to prevent damage, the lower end of each inclined supporting beam is fixed on the surface of the planar steel plate 3, and at the moment, the center of the arc surface on the clamping plate 5 and the center of a steel pipe arch rib 8 to be manufactured are positioned on;
2) flame bending: the circular tube is placed on a pad beam 4 located on one side of the arc surface of the clamping plate 5, when an external force is applied to the circular tube in the direction of the clamping plate 5 by a jacking pick 7, the circular tube is symmetrically heated from two ends to the center by flame sprayed by a baking gun, the heating temperature is 900-1000 ℃, the heating temperature is controlled by an infrared thermometer, the circular tube is softened due to heating in the heating process and finally abuts against the arc surfaces of a plurality of clamping plates 5, the purpose of flame simmering is achieved, processing is finished before the temperature is reduced to 800 ℃, and finally the steel tube arch rib 8 is slowly and naturally cooled to room temperature to form the steel tube arch rib 8, so that the circular tube is prevented from being distorted and deformed in the baking process, ultrasonic waves and rays are used for detecting flaws of the steel tube arch rib 8, and the steel tube arch rib 8 is ensured to meet the design.
Claims (8)
1. The utility model provides a bed-jig device for processing preparation steel pipe arch rib which characterized in that: the jig frame device for processing and manufacturing the steel tube arch rib comprises two main beams (1), a plurality of secondary beams (2), a planar steel plate (3), a plurality of cushion beams (4), a plurality of clamping plates (5) and a plurality of inclined support beams (6); wherein the two main beams (1) are arranged in parallel; the secondary beams (2) are arranged between the two main beams (1) in a parallel mode with the main beams (1); the bottom surface of the plane steel plate (3) is simultaneously connected with the upper ends of the main beam (1) and the secondary beam (2); the lower ends of the cushion beams (4) are fixed on the surface of the plane steel plate (3) in a mode of being vertical to the main beam (1) and are equal in interval, so that an underframe is formed; one side surface of each clamping plate (5) is an 1/4 arc surface, the lower end of each clamping plate (5) is fixed on the surface of the planar steel plate (3) between two adjacent backing beams (4), the connecting lines of the clamping plates (5) on the planar steel plate (3) are the same as the camber of the steel pipe arch rib (8), and the arc surfaces are positioned on the same side; the upper end of each inclined supporting beam (6) is fixed on the other side surface of one clamping plate (5), and the lower end of each inclined supporting beam is fixed on the surface of the plane steel plate (3).
2. The jig frame device for processing and manufacturing the steel tube arch rib as claimed in claim 1, wherein the main beam (1) adopts H-shaped steel with the size of 500 × 500 × 16 × 24 mm.
3. The jig frame device for processing and manufacturing the steel tube arch rib as claimed in claim 1, wherein the secondary beams (2) adopt H-shaped steel with the size of 300 × 300 × 10 × 14mm, and adjacent secondary beams (2) are uniformly arranged at the interval of 1 m.
4. The jig frame device for manufacturing steel tube arch ribs according to claim 1, wherein: the pad beams (4) are 10mm channel steel, and the distance between every two adjacent pad beams (4) is 1 m.
5. The jig frame device for manufacturing steel tube arch ribs according to claim 1, wherein: the diameter of the arc surface on the clamping plate (5) is 1m, and the center of the arc surface and the center of the steel pipe arch rib (8) are positioned on the same horizontal line.
6. The jig frame device for manufacturing steel tube arch ribs according to claim 1, wherein: the thickness of the plane steel plate (3) is 30mm, and the material is Q235 steel.
7. The jig frame device for processing and manufacturing the steel tube arch rib as claimed in claim 1, wherein the inclined supporting beam (6) is H-shaped steel with the size of 250 × 250 × 8 × 12 mm.
8. A method for manufacturing a steel tube arch rib by using the jig frame device as claimed in claim 1, wherein: the method comprises the following steps which are carried out in sequence:
1) firstly assembling a jig frame device: two main beams (1), a plurality of secondary beams (2), a plane steel plate (3) and a plurality of pad beams (4) are made into a bottom frame by workers, and the elevation of the top surface of each pad beam (4) is detected by a level gauge so as to ensure that the top surfaces of all the pad beams (4) are positioned on the same horizontal plane; then according to design FIG. 1: 1, setting out the chord height value of a single steel pipe to be set out, setting out and popping by ink lines on the surface of a planar steel plate (3) positioned between pad beams (4), then installing a plurality of clamping plates (5) at marks in a mode that arc surfaces are positioned at the same side, then fixing the upper end of each inclined supporting beam (6) on the other side surface of one clamping plate (5), fixing the lower end of each inclined supporting beam on the surface of the planar steel plate (3), and positioning the center of the arc surface on the clamping plate (5) and the center of a steel pipe arch rib (8) to be manufactured on the same horizontal line;
2) flame bending: the circular tube is placed on a pad beam (4) on one side of an arc surface on a clamping plate (5), external force is applied to the circular tube in the direction of the clamping plate (5) by a jacking pick (7), meanwhile, flame sprayed by a baking gun is used for symmetrically heating the circular tube from two ends to the center direction, the heating temperature is 900-1000 ℃, an infrared thermometer is used for controlling, in the heating process, the circular tube is softened due to heating and finally abuts against the arc surfaces of a plurality of clamping plates (5), therefore, the purpose of flame bending is achieved, processing is finished before the temperature is reduced to 800 ℃, finally, the circular tube is slowly and naturally cooled to the room temperature to form a steel tube arch rib (8), ultrasonic waves and rays are used for carrying out flaw detection on the steel tube arch rib (8), and the steel tube arch rib (8) is ensured to meet the design requirements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245385.3A CN111318597A (en) | 2020-03-31 | 2020-03-31 | Jig frame device and method for machining and manufacturing steel tube arch rib |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245385.3A CN111318597A (en) | 2020-03-31 | 2020-03-31 | Jig frame device and method for machining and manufacturing steel tube arch rib |
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| CN111318597A true CN111318597A (en) | 2020-06-23 |
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| CN202010245385.3A Pending CN111318597A (en) | 2020-03-31 | 2020-03-31 | Jig frame device and method for machining and manufacturing steel tube arch rib |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002201609A (en) * | 2000-12-28 | 2002-07-19 | Ps Corp | Construction method for concrete arch bridge |
| CN102133588A (en) * | 2010-12-14 | 2011-07-27 | 中国水电建设集团十五工程局有限公司 | Intermediate frequency hot bending method for steel pipe |
| CN202387797U (en) * | 2012-05-11 | 2012-08-22 | 河北二十冶工程技术有限公司 | Positioning plate for cold bending of steel pipe |
| CN102886400A (en) * | 2012-10-25 | 2013-01-23 | 盈都桥梁钢构工程有限公司 | Hot work bending technology for spatial hyperbolic circular tube |
| KR20130126381A (en) * | 2012-05-11 | 2013-11-20 | 주식회사 장헌산업 | Construction method of arch rib in arch bridge |
| CN207787371U (en) * | 2017-12-11 | 2018-08-31 | 武汉华电工程装备有限公司 | A kind of steel pipe bending device |
| CN212238732U (en) * | 2020-03-31 | 2020-12-29 | 中铁六局集团有限公司 | Jig frame device for processing and manufacturing steel tube arch rib |
-
2020
- 2020-03-31 CN CN202010245385.3A patent/CN111318597A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002201609A (en) * | 2000-12-28 | 2002-07-19 | Ps Corp | Construction method for concrete arch bridge |
| CN102133588A (en) * | 2010-12-14 | 2011-07-27 | 中国水电建设集团十五工程局有限公司 | Intermediate frequency hot bending method for steel pipe |
| CN202387797U (en) * | 2012-05-11 | 2012-08-22 | 河北二十冶工程技术有限公司 | Positioning plate for cold bending of steel pipe |
| KR20130126381A (en) * | 2012-05-11 | 2013-11-20 | 주식회사 장헌산업 | Construction method of arch rib in arch bridge |
| CN102886400A (en) * | 2012-10-25 | 2013-01-23 | 盈都桥梁钢构工程有限公司 | Hot work bending technology for spatial hyperbolic circular tube |
| CN207787371U (en) * | 2017-12-11 | 2018-08-31 | 武汉华电工程装备有限公司 | A kind of steel pipe bending device |
| CN212238732U (en) * | 2020-03-31 | 2020-12-29 | 中铁六局集团有限公司 | Jig frame device for processing and manufacturing steel tube arch rib |
Non-Patent Citations (1)
| Title |
|---|
| 宋雷等: "《土木工程测试》", vol. 2, 31 July 2019, 中国矿业大学出版社, pages: 107 - 108 * |
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