CN102489561B - Cold-bending process for steel tube and special machining-moulding device thereof - Google Patents
Cold-bending process for steel tube and special machining-moulding device thereof Download PDFInfo
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- CN102489561B CN102489561B CN 201110414288 CN201110414288A CN102489561B CN 102489561 B CN102489561 B CN 102489561B CN 201110414288 CN201110414288 CN 201110414288 CN 201110414288 A CN201110414288 A CN 201110414288A CN 102489561 B CN102489561 B CN 102489561B
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Abstract
The invention discloses a cold-bending process for a steel tube and a special machining-moulding device thereof. The cold-bending process for a steel tube comprises the following steps of: giving a theoretical steel tube bending arc line on an operation platform, and determining an inside control point and an outside control point; fixing a location plate at the inside control point; acting a lateral tension on one end of the steel tube by a chain block via a steel wire rope and a steel tube fastener; and locating and blocking the steel tube by the location plate, so as to mould the cold-bentsteel tube according to the bending arc line. The special machining device comprises an operation platform, a location plate and a steel tube fastener. The cold-bending process for a steel tube and the special machining-moulding device thereof disclosed by the invention are simple in process, simple and convenient in operation, easy in implementation, capable of being operated at any time in building construction site, without damage on the parent material of steel tube and adverse effects on the material of steel tube, and suitable for being implemented in case of no bending equipment and innarrow operation space.
Description
Technical field
The present invention relates to the cold simmering and bending technology of a kind of steel pipe and special-purpose machine-shaping device thereof.
Background technology
In the pipe truss construction process of building trade, run into the situation that to carry out simmering and bending to steel pipe for building through regular meeting.The steel pipe simmering and bending generally are to adopt the curved two kinds of different technologies of cold simmering and bending and fire bending to carry out.The fire bending bending process generally is applicable to the steel pipe that caliber is bigger, but in the heating process of steel pipe, can cause the change of steel pipe material physical and chemical index, the compression strength of steel pipe is reduced, corrosion rate quickening etc.Cold simmering and bending technology belongs to mechanical simmering and bending, though can not produce above-mentioned adverse effect to steel pipe, but cold simmering and bending action need carries out in Bender by roasting, and Bender by roasting is bulky, equipment purchasing cost height, and Bender by roasting itself all is fixedly mounted in the machined workshop, therefore, do not have the setting of Bender by roasting thereby the constructing operation that yet just can't carry out the cold simmering and bending of steel pipe at the scene at construction site.
Summary of the invention
One of purpose of the present invention just provides the cold simmering and bending technology of a kind of steel pipe, does not have can't carry out under the simmering and bending equipment situation problem of cold simmering and bending operation with the scene of solving.
Two of purpose of the present invention just provides the special-purpose machine-shaping device of the cold simmering and bending of a kind of steel pipe, so that the cold simmering and bending of the steel pipe of job site become possibility.
One of purpose of the present invention is achieved in that the cold simmering and bending technology of a kind of steel pipe, carries out according to the following steps:
A, emit theoretical tube bending camber line at the table top of operating platform, comprise interior camber line and the outer camber line of tube bending; The mid point of interior camber line two ends line is decided to be the center O point, from described center O point do some radioactive ray respectively with described in camber line and outer camber line crossing; The intersection point of radioactive ray and interior camber line is inboard control point, and radioactive ray are control point, the outside with the intersection point of outer camber line;
B, each fixes the location-plate of a band cancave cambered surface riser on above-mentioned each the inboard control point on the operating platform, and the cancave cambered surface on each location-plate is outside along radioactive ray; An end of camber line is fixed a location-plate that cancave cambered surface is inside outside, this location-plate and be fixed on the chuck that forms a clamping steel pipe between the location-plate of inner arc thread end;
C, an end of cold stewing steel pipe is penetrated in the above-mentioned chuck, fix a steel tube fastener at the other end of cold stewing steel pipe, steel tube fastener is provided with the location and adjusts screw rod and stretch hole; Adjust screw rod by the location of adjusting on the steel tube fastener, make the table top keeping parallelism of cold stewing steel pipe and operating platform;
Penetrate steel wire rope in d, the stretch hole on steel tube fastener, the other end of steel wire rope is hooked on the hook of jack, the termination of jack is fixed on the fixing point on the operating platform, this fixing point arranges the position on operating platform, should guarantee that the steel wire rope of tractive and the angle α between cold stewing steel pipe are 80 °;
E, affect the drag-line on the jack, by steel wire rope and steel tube fastener cold stewing steel pipe is applied the side direction pulling force, make cold stewing steel pipe to a lateral bending song of jack; Under the prerequisite of angle α at 80-100 ° that guarantees between steel wire rope and cold stewing steel pipe, after on the location-plate of cold stewing tube bending to adjacent next inboard control point, namely fixing a location-plate with the control point, the outside of this control point, inboard on same radioactive ray, and the cancave cambered surface on this location-plate is inwardly fastened on the lateral surface of cold stewing steel pipe;
F, in the process that affects the jack drag-line, when the angle α between steel wire rope and cold stewing steel pipe reaches 100 °, stop to affect drag-line, carry out the replacing of jack termination fixing point; New fixing point arranges the position on operating platform, should guarantee that the angle α between steel wire rope and cold stewing steel pipe is 80 °;
G, repeating step e and f put in place until the whole bendings of cold stewing steel pipe.
In the cold simmering and bending technology of above-mentioned steel pipe, described on the camber line adjacent inboard control point and the angle between the center O point line between 15-30 °.
In the cold simmering and bending technology of above-mentioned steel pipe, adjacent inboard control point and the angle between the center O point line on the camber line in described, to the end of tube bending camber line, be set at 15 °, 15 °, 20 °, 20 °, 20 °, 30 °, 30 °, 30 ° from the top of tube bending camber line successively.
Two of purpose of the present invention is achieved in that the special-purpose machine-shaping device of the cold simmering and bending technology of a kind of steel pipe, comprising:
The operating platform of surfacing;
Be fixed in regular turn on the tube bending camber line that described operating platform is drawn out and cold stewing steel pipe carried out the location-plate of lateral register; And
Be used for to adjust cold stewing steel pipe on described operating platform level height and cold stewing steel pipe is implemented the steel tube fastener of tractive.
Described location-plate is that base is provided with upright riser, and the front end face of described riser is cancave cambered surface.
Described steel tube fastener comprises base plate, is connected on the described base plate two location and adjusts screw rods, and involutory snapping steel pipe last buckle and the lower pinch plate used; Be connected to two flat semi-girders at described lower pinch plate, have the stretch hole of cross-under steel wire rope and the jack hole that screw rod is adjusted in the cross-under location at described flat semi-girder; Described location is adjusted screw rod and is fixed in the jack hole of described flat semi-girder by nut.
The present invention compared with prior art has following advantage:
1, the cold simmering and bending technology of steel pipe of the present invention has technology characteristics simple, easy and simple to handle, easy to implement, can implement at any time at construction site, can save steel pipe simmering and bending cost in the pipe truss fabrication thus, increases work efficiency, and guarantees the construction period.
2, the dependable performance of steel tube bending is not damaged mother metal, can not produce any adverse effect to the physical and chemical index of steel pipe.
3, the special-purpose machine-shaping device of the cold simmering and bending technology of steel pipe has characteristics such as simple in structure, that configuration is easy, cost of manufacture is low, built-up time is short, use is easy to operate, is suitable for using in the job site that does not have simmering and bending equipment or in narrow and small operating space.
Description of drawings
Fig. 1 is the original state figure of the cold simmering and bending processing of steel pipe.
Fig. 2 is the cold simmering and bending machine-shaping of steel pipe pilot process figure.
Fig. 3 is the completion status figure of the cold simmering and bending processing of steel pipe.
Fig. 4 is the structural representation of operating platform.
Fig. 5 is the structural representation of location-plate.
Fig. 6 is the structural representation of two location-plate clamping steel pipes.
Fig. 7 is the structural representation of steel tube fastener.
Among the figure: 1, operating platform, 2, location-plate, 3, go up buckle, 4, lower pinch plate, 5, flat semi-girder, 6, the location adjusts screw rod, 7, steel tube fastener, 8, outer camber line, 9, control point, the outside, 10, interior camber line, 11, inboard control point, 12, jack, 13, drag-line, 14, cold stewing steel pipe, 15, base plate, 16, steel wire rope, 17, fixing point.
The specific embodiment
The concrete operations step of the cold simmering and bending technology of steel pipe of the present invention is as follows:
One, platform setting-out: as shown in Figure 1, by the drawing requirement of steel tube bending, emit theoretical tube bending camber line at the table top of operating platform 1, comprise interior camber line 10 and the outer camber line 8 of tube bending.With O point centered by the mid point demarcation of interior camber line 10 two ends lines, make seven radioactive ray from this center O point, intersect with interior camber line 10 and outer camber line 8 respectively.Two end points of seven intersection points of radioactive ray and interior camber line and interior camber line are inboard control point 11, and radioactive ray are control point, the outside 9 with the intersection point of outer camber line.Angle on the interior camber line 10 between the line of adjacent inboard control point 11 and center O point,, be set at successively: 15 °, 15 °, 20 °, 20 °, 20 °, 30 °, 30 °, 30 ° to the end (from right to left namely) of tube bending camber line from the top of tube bending camber line.
Two, assembly tooling: as shown in Figure 1, fix a location-plate 2 respectively on each the inboard control point 11 on the interior camber line 10, the cancave cambered surface on each location-plate is outside along radioactive ray.A location-plate is fixed on control point in first outside of camber line 8 right-hand members outside, and the cancave cambered surface of this location-plate is inside, be fixed in cooperate the chuck (Fig. 6) that forms a clamping steel pipe between the location-plate of camber line 10 ends.The left end of cold stewing steel pipe 14 is penetrated in this chuck; The right-hand member that steel tube fastener 7 is fixed on cold stewing steel pipe 14 (along 150-200mm), makes cold stewing steel pipe 14 flat loads apart from end on the table top of operating platform 1.Screw rod is adjusted in the location of adjusting on the steel tube fastener 7, makes cold stewing steel pipe 14 parallel (namely keeping level) with the table top of operating platform 1.Penetrate steel wire rope 16 in the stretch hole on steel tube fastener 7, it is bottle gouard moved by hands that the other end of steel wire rope is hooked on jack 12() hook on.The termination of jack 12 is fixed at the fixing point 17(point that operating platform 1 arranges and is welded in upright short wooden stake on the operating platform table top) on.This fixing point arranges the position on operating platform, the steel wire rope 16 that should guarantee tractive is 80 ° with the angle α of cold stewing steel pipe 14 right-hand members.
Three, the cold stewing of steel pipe: as shown in Figure 2, the drag-line 13 on the tractive jack 12 constantly tightens up hook, and the right-hand member by steel wire rope 16 and 7 pairs of cold stewing steel pipes 14 of steel tube fastener applies the side direction pulling force, makes the left part of cold stewing steel pipe 14 produce lateral thrust.Along with the continuous contraction of hook and the bending gradually of cold stewing steel pipe left part, the angle α between steel wire rope 16 and the cold stewing steel pipe 14 is also just constantly enlarging.Guaranteeing under the precondition of α angle at 80-100 °, after cold stewing steel pipe 14 bends on second location-plate 2 on the inboard control point, namely fixing a location-plate with this opposite external side control point, control point, inboard, cancave cambered surface on this location-plate should be inside along radioactive ray, on the lateral surface that fastens to cold stewing steel pipe 14, play location, the outside and spacing effect, in order to prevent that bent arc is excessive, the control curvature.When the α angle is expanded 100 ° to, stop drag drag-line 13, change the fixing point of jack 12 terminations.Second fixing point arranges the position on operating platform 1, also be to guarantee that the angle α of steel wire rope 16 and cold stewing steel pipe 14 right-hand members after tractive is tightened is 80 °.
Four, continuity is finished: repeat the cold stewing of above-mentioned steel pipe operation, until cold stewing steel pipe 14 as shown in Figure 3, fully bending put in place, and point last location-plate 2 of burn-oning on the control point 9, an outside in the end.
Will keep leading and drag a period of time (time length is different and different according to the steel pipe material) after the cold stewing of steel pipe puts in place fully just can put and open.In whole cold stewing process, continue not have reinforcing intermittently and lead and drag, namely at tube bending after certain curvature, to carry out again behind the certain interval of time reinforcing and lead and drag, so just can guarantee intensity and curvature after the cold stewing of steel pipe.
The special-purpose machine-shaping device of the cold stewing of the used steel pipe of the present invention includes operating platform 1, location-plate 2 and steel tube fastener 7, and specific purpose tool is jack 12.
Location-plate 2 as shown in Figure 5, the riser that is connected on the base by one flat plate base and vertical welding constitutes, and base is thick 20mm bloom, the have drawn from steel plate of thick 20mm of riser, its front end face is processed into cancave cambered surface, and the arc action of cancave cambered surface should equal the outer radius of cold stewing steel pipe.
The concrete structure of steel tube fastener 7 as shown in Figure 7, base plate 15 is rectangular steel plates, is welded with the nut that two connecting screw rods are used at base plate 15, two location are adjusted screw rods 6 and are connected on the base plate by these two nut threads.Last buckle 3 is a pair of buckling plates that can fasten to form circular hole relatively with lower pinch plate 4, and the two connects by the bolting of joining cross-under on the ear in the end.Be connected to two flat semi-girders 5 at lower pinch plate 4, have the stretch hole of cross-under steel wire rope and the jack hole that screw rod is adjusted in the cross-under location at flat semi-girder 5.The location is adjusted screw rod 6 and is fixed in the jack hole of flat semi-girder 5 by upper and lower two nuts.
The member of steel tube fastener 7 is selected for use intensity to be not less than the steel plate that 16MnR and thickness is not less than 25mm and is processed.The internal diameter of steel tube fastener 7 (being that upper and lower buckle fastens formed Circularhole diameter) equals the cold stewing outer diameter of steel pipes of wanting.
Claims (6)
1. the cold simmering and bending technology of steel pipe is characterized in that, carries out according to the following steps:
A, emit theoretical tube bending camber line at the table top of operating platform, comprise interior camber line and the outer camber line of tube bending; The mid point of interior camber line two ends line is decided to be the center O point, from the center O point do some radioactive ray respectively with described in camber line and outer camber line crossing; The intersection point of radioactive ray and interior camber line is inboard control point, and radioactive ray are control point, the outside with the intersection point of outer camber line;
B, each fixes the location-plate of a band cancave cambered surface riser on above-mentioned each the inboard control point on the operating platform, and the cancave cambered surface on each location-plate is outside along radioactive ray; An end of camber line is fixed a location-plate that cancave cambered surface is inside outside, this location-plate and be fixed on the chuck that forms a clamping steel pipe between the location-plate of inner arc thread end;
C, an end of cold stewing steel pipe is penetrated in the above-mentioned chuck, fix a steel tube fastener at the other end of cold stewing steel pipe, steel tube fastener is provided with the location and adjusts screw rod and stretch hole; Adjust screw rod by the location of adjusting on the steel tube fastener, make the table top keeping parallelism of cold stewing steel pipe and operating platform;
Penetrate steel wire rope in d, the stretch hole on steel tube fastener, the other end of steel wire rope is hooked on the hook of jack, the termination of jack is fixed on the fixing point on the operating platform, this fixing point arranges the position on operating platform, should guarantee that the steel wire rope of tractive and the angle α between cold stewing steel pipe are 80 °;
E, affect the drag-line on the jack, by steel wire rope and steel tube fastener cold stewing steel pipe is applied the side direction pulling force, make cold stewing steel pipe to a lateral bending song of jack; Under the prerequisite of angle α at 80-100 ° that guarantees between steel wire rope and cold stewing steel pipe, after on the location-plate of cold stewing tube bending to adjacent next inboard control point, namely fixing a location-plate with the control point, the outside of this control point, inboard on same radioactive ray, and the cancave cambered surface on this location-plate is inwardly fastened on the lateral surface of cold stewing steel pipe;
F, in the process that affects the jack drag-line, when the angle α between steel wire rope and cold stewing steel pipe reaches 100 °, stop to affect drag-line, carry out the replacing of jack termination fixing point; New fixing point arranges the position on operating platform, should guarantee that the angle α between steel wire rope and cold stewing steel pipe is 80 °;
G, repeating step e and f put in place until the whole bendings of cold stewing steel pipe.
2. the cold simmering and bending technology of steel pipe according to claim 1 is characterized in that, described on the camber line adjacent inboard control point and the angle between the center O point line between 15-30 °.
3. the cold simmering and bending technology of steel pipe according to claim 2, it is characterized in that, adjacent inboard control point and the angle between the center O point line on the camber line in described, to the end of tube bending camber line, be set at 15 °, 15 °, 20 °, 20 °, 20 °, 30 °, 30 °, 30 ° from the top of tube bending camber line successively.
4. the special-purpose machine-shaping device of the cold simmering and bending technology of the described steel pipe of claim 1 is characterized in that, comprising:
The operating platform of surfacing (1);
Be fixed in regular turn on the tube bending camber line that described operating platform (1) is drawn out and cold stewing steel pipe carried out the location-plate (2) of lateral register; And
Be used for to adjust cold stewing steel pipe on described operating platform (1) level height and cold stewing steel pipe is implemented the steel tube fastener (7) of tractive.
5. machine-shaping device according to claim 4 is characterized in that, described location-plate (2) is that base is provided with upright riser, and the front end face of described riser is cancave cambered surface.
6. machine-shaping device according to claim 4, it is characterized in that, described steel tube fastener (7) comprises base plate (15), is connected on the described base plate (15) two location and adjusts screw rods (6), and snapping steel pipe last buckle (3) and the lower pinch plate (4) used; Be connected to two flat semi-girders (5) at described lower pinch plate (4), have the stretch hole of cross-under steel wire rope and the jack hole that screw rod is adjusted in the cross-under location at described flat semi-girder (5); Described location is adjusted screw rod (6) and is fixed in the jack hole of described flat semi-girder (5) by nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110414288 CN102489561B (en) | 2011-12-13 | 2011-12-13 | Cold-bending process for steel tube and special machining-moulding device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110414288 CN102489561B (en) | 2011-12-13 | 2011-12-13 | Cold-bending process for steel tube and special machining-moulding device thereof |
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| Publication Number | Publication Date |
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| CN102489561A CN102489561A (en) | 2012-06-13 |
| CN102489561B true CN102489561B (en) | 2013-09-25 |
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| CN 201110414288 Expired - Fee Related CN102489561B (en) | 2011-12-13 | 2011-12-13 | Cold-bending process for steel tube and special machining-moulding device thereof |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102873145B (en) * | 2012-10-19 | 2015-03-25 | 中国十九冶集团有限公司 | Device and method for machining angle steel of conical bin wall |
| CN103028877B (en) * | 2012-11-21 | 2014-09-03 | 四川蓝星机械有限公司 | Method for forming large elbow and tool for forming large elbow |
| CN104525647A (en) * | 2014-12-12 | 2015-04-22 | 中国核工业二三建设有限公司 | Tool for cold-forming pipeline |
| CN105344760A (en) * | 2015-12-04 | 2016-02-24 | 佛山高富中石油燃料沥青有限责任公司 | Pipe bending device |
| CN106077200B (en) * | 2016-08-26 | 2018-04-17 | 江阴市七星机械设备制造有限公司 | The hot-bending method of the U-shaped sunpender of boiler |
| CN106881381A (en) * | 2017-04-28 | 2017-06-23 | 莱芜钢铁集团有限公司 | bending device |
| CN109482686B (en) * | 2018-12-29 | 2020-03-13 | 重庆鑫劲宏景机械有限公司 | Hot bending equipment for motorcycle tubular frame |
| CN113231580B (en) * | 2021-06-15 | 2022-04-12 | 中交第二航务工程局有限公司 | Forming process of super-large-diameter annular reinforcing steel bar mesh part |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP4726884B2 (en) * | 2007-11-29 | 2011-07-20 | 徹 佐藤 | Steel pipe bending apparatus and steel pipe bending method |
| CN101264492A (en) * | 2008-04-29 | 2008-09-17 | 武汉舒居科技有限公司 | Internal tension force deformation special-shaped section simmer bending machine |
| CN201446162U (en) * | 2009-08-24 | 2010-05-05 | 中建钢构江苏有限公司 | Space elbow pipe multi-functional positioner |
| CN201702222U (en) * | 2010-06-11 | 2011-01-12 | 中国第一冶金建设有限责任公司 | Track baffle limiting and bending device for single-track crane |
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