CN109531062B - Method for manufacturing uneven bending box beam rotary ladder - Google Patents
Method for manufacturing uneven bending box beam rotary ladder Download PDFInfo
- Publication number
- CN109531062B CN109531062B CN201811408181.6A CN201811408181A CN109531062B CN 109531062 B CN109531062 B CN 109531062B CN 201811408181 A CN201811408181 A CN 201811408181A CN 109531062 B CN109531062 B CN 109531062B
- Authority
- CN
- China
- Prior art keywords
- plate
- plates
- spot welding
- web
- flange
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steps, Ramps, And Handrails (AREA)
- Ladders (AREA)
Abstract
The invention discloses a method for manufacturing a non-uniform bending box beam rotary ladder, which comprises the following steps: firstly, lofting a flange plate and a web plate by using a computer, then carrying out numerical control programming, and cutting and blanking by using plasma according to the programming; secondly, curling and processing a flange plate and a web plate on a roller bed; drawing the projection outline of the rotary ladder on the bed plate and dividing the projection outline into N equal parts corresponding to the stairs; fourthly, calculating the height difference of each bisector relative to the initial side of the step, and welding a jig frame on each bisector by using section steel according to the height difference; spot welding a group bottom plate on each jig frame; spot welding the assembled web plate and flange plate on the bottom plate; seventhly, assembling top plates on the flange plates and the web plates in a spot welding mode and marking lines on steps of the stairs at all levels; carrying out spot welding assembly on the stairs at all levels after blanking by adopting numerical control programming according to the development diagrams of the stairs at all levels; ninthly, carrying out all-dimensional welding; the red is inspected and coated. The invention is assembled by simulating the actual installation space structure size of the rotary steel ladder, thereby greatly improving the manufacturing precision and having good molding effect.
Description
Technical Field
The invention relates to a manufacturing technology of building supporting facilities, in particular to a manufacturing method of a non-uniform twisted box-shaped beam rotary ladder.
Background
Rotary-type steel ladder belongs to three-dimensional revolution mechanic, and its location is the space node, and rotatory stair are bilateral symmetry structure at present mostly, and such structure manufacturing is simple, and is with low costs to and the aspect of atress load is unanimous, and building structure is also comparatively stable and safe. However, the spiral stair is used as a decoration project, and an asymmetric stair with a complex and attractive structure is also a development trend, for example, the irregular and uneven twisted box-shaped steel beam spiral stair with a large rotation angle, a large size and a large span is more difficult to manufacture, but is more attractive, the appreciation performance of the whole building structure can be further improved, and the structural stability of the stair can be ensured.
The rotary steel stair is in a space cranked structural form, the cross section of a stair beam is box-shaped, the rotary steel stair is a main bearing structure, the assembling and welding process of box-shaped members is adopted during assembling and welding, if the traditional manufacturing technology is adopted, the construction period is long, the cost is high, the welding deformation is large, the appearance forming is poor, and the inner partition plate of the cranked box-shaped member is assembled in front of a web plate, so that the web plate is difficult to assemble, and the correction amount is large.
The inner side of the rotary stair manufactured by the applicant unit is an elliptic curve, so that the steps are equal, the corresponding unfolding sizes of the steps are different, the unfolding heights of webs are uneven, the special-shaped stair with large change is formed, the connecting sizes of all parts need to be accurately positioned, the manufacturing process is complex, the control precision requirement is high, the shape and position sizes are difficult to control during manufacturing, and large deviation exists between the manufacturing of a workshop and the installation size on site.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to solve the technical problem of providing the method for manufacturing the uneven twist box beam rotary ladder, which has the advantages of low assembly jig frame, material saving of the jig frame, safe construction, accurate blanking shape of the twist box beam, less welding joints, difficult deformation and stable structure.
The method for manufacturing the uneven-bending box-shaped beam rotary ladder can solve the technical problems, and the scheme of part processing and site construction is as follows:
1. according to the coordinates of three-dimensional space points of an outer side flange plate and an inner side web plate of each bending box beam and the x and y coordinates of points unfolded by a two-dimensional plane in a drawing, the irregular flange plates and web plates are subjected to numerical control arrangement and editing after part lofting is carried out by a computer to obtain a typesetting program, the typesetting program is input into a numerical control system of a plasma cutting machine, and plates are accurately cut on the plasma cutting machine according to programming to carry out blanking.
2. And determining the included angle between the flange plate or the web plate and the central line of the roller bed on the roller bed according to the rising angle of the rotary ladder, and performing curling processing according to the similar radius according to the different sections of the plane development drawing of the flange plate or the web plate.
3. According to the drawing size, a horizontal projection outline of the rotary ladder is drawn on the horizontal bed-jig by using a plane projection method, and the projection outline is divided into N equal parts corresponding to all levels of stairs.
4. Drawing step lines on the projection outline to determine the starting edge of the rotary ladder, calculating the height difference data of each bisector relative to the starting edge by means of design software, respectively arranging support frames at two ends of each bisector by using section steel according to each height difference data, and welding the support frames on a bed mould to complete the construction of a left bed mould frame and a right bed mould frame.
5. And (4) spot welding and assembling a bottom plate of the cranked box beam on each jig frame.
6. Assembling web and flange plates on the inner and outer edges of each bottom plate by vertical spot welding.
7. And spot welding and assembling a top plate on the flange plate and the web plate of each bottom plate to shape the bent and twisted box-shaped beam, and marking each stair step on each bent and twisted box-shaped beam by using a laser projector according to the equal dividing line.
8. And (3) accurately blanking by adopting numerical control programming according to the development figures of the steps of the stairs at all levels, scribing according to the height of the stairs at all levels, folding edges by using a bending machine, and performing spot welding assembly on the stairs at all levels corresponding to the stepping scribing.
9. And all the assembly welding parts are welded in all directions.
10. And (6) inspecting and coating.
The invention has the beneficial effects that:
1. according to the invention, the building is carried out on the jig frame by simulating the actual installation space structure size of the rotary ladder, and an integrated assembly method is adopted, so that the manufacturing precision is improved, and the forming effect is good.
2. The method for manufacturing the uneven bending box beam rotary ladder has the advantage that the dimensional accuracy of parts is very high by means of computer modeling, drawing, CAD lofting comparison inspection and key point calculation control.
Drawings
Fig. 1 is a perspective view of one embodiment of the present invention.
Fig. 2 is a construction view of the embodiment of fig. 1.
FIG. 3 is a schematic view of the flange plate or web of FIG. 1 being machined.
And (3) identifying the figure number: 1. bending and twisting the box beam; 2. a flange plate; 3. a web; 4. a roller bed; 5. a support frame; 6. a base plate; 7. stair steps; 8. equally dividing the lines; 9. and (4) a tire plate.
Detailed Description
The technical solution of the present invention will be further explained with reference to the embodiments shown in the drawings.
The invention relates to a method for manufacturing a non-uniform cranked box-shaped beam rotary ladder, which has a structure shown in figure 1 and comprises a left cranked box-shaped beam 1 and a right cranked box-shaped beam 1 which rotate upwards and a plurality of stair steps 7 arranged between the left cranked box-shaped beam 1 and the right cranked box-shaped beam 1, wherein each cranked box-shaped beam 1 comprises an upper top plate, a lower top plate, a bottom plate 6, a web plate 3 and a flange plate 2 at the inner side and the outer side, and each stair step 7 is a plate body with folded edges of approximately 90 degrees.
The invention relates to a method for manufacturing a non-uniform bending and twisting box beam rotary ladder, which adopts the following part processing and field construction scheme:
1. according to three-dimensional space point coordinates and two-dimensional plane unfolded point x and y coordinates of an outer side flange plate 2 and an inner side web plate 3 of each bent and twisted box beam 1 in a drawing, carrying out numerical control arrangement and editing on irregular flange plates 2 and web plates 3 after part lofting is carried out by a computer to obtain a typesetting program, inputting the typesetting program into a numerical control system of a plasma cutting machine, and accurately cutting plates on the plasma cutting machine according to programming to carry out blanking; and a leveling machine is adopted to level the plate before blanking, so that accurate blanking of parts is ensured.
2. The included angle (90 degrees-angle A) between the flange plate 2 or the web plate 3 and the central line of the roller bed 4 is determined on the roller bed 4 according to the rising angle of the rotary ladder, and the curling processing (such as ellipse processing) is carried out according to the approximate radius according to the different sections of the plane development drawing of the flange plate 2 or the web plate 3, as shown in figure 3.
3. According to the drawing size, a horizontal projection outline of the rotary ladder is drawn on a horizontal bed mould 9 by using a plane projection method, and the projection outline is divided into N equal parts (divided by an equal dividing line 8) corresponding to each step 7 of the stair, as shown in figure 2.
4. Drawing step lines on the projection profile to determine the starting edge of the rotary ladder, calculating height difference data of each bisector 8 relative to the starting edge by means of design software, respectively arranging support frames 5 at two ends of each bisector by using H-shaped steel according to the height difference data, rechecking the height difference size of each support frame 5 to ensure that the support height of each support frame 5 is consistent with the corresponding rotary height of an installation site, and welding each support frame 5 on a tire plate 9 to complete the construction of a left tire frame and a right tire frame after rechecking is finished, as shown in figure 2.
5. Adjusting and positioning according to the height of the jig frame and the projection profile, and assembling the bottom plates 6 of the left and right cranked box beams 1 on the left and right jig frames by spot welding, as shown in figure 2.
6. Assembling the web plate 3 and the flange plate 2 on the inner edge and the outer edge of each bottom plate 6 in a vertical spot welding manner, and performing flame fine adjustment on the radians of the web plate 3 and the flange plate 2 during assembly to ensure that the assembly is close to the bottom plates and is vertical to the ground, as shown in fig. 2.
7. The curved box beam 1 is shaped by spot welding a top plate on the flange plate 2 and the web plate 3 of each bottom plate 6, and the left and right curved box beams 1 are scribed with laser projectors for each step 7 of the stairs as shown in fig. 2 against the bisector 8.
8. Accurate blanking is performed by adopting numerical control programming according to the development drawing of each stair step 7, scribing is performed according to the height of each stair step 7, the edge of each stair step 7 is folded by using a bending machine, and then spot welding assembly of each stair step 7 is performed corresponding to the scribing of each stair step 7, as shown in figure 1.
9. All the assembly welding parts are welded in all directions, preheating is carried out before welding, small current input is set during welding, and multi-layer and multi-pass inverse deformation welding processes such as a segmented back welding method and a symmetric welding method are adopted.
10. And after welding, checking the size of the rotary ladder and the quality of a welding seam according to a construction drawing, dismantling the jig frame after the welding is qualified, and finally performing shot blasting and oil brushing coating.
Claims (1)
1. The method for manufacturing the uneven bending box beam rotary ladder comprises the following steps of part processing and field construction:
firstly, according to three-dimensional space point coordinates of an outer side flange plate (2) and an inner side web plate (3) of each bent box-shaped beam (1) in a drawing and x and y coordinates of points unfolded in a two-dimensional plane, carrying out numerical control arrangement and editing on irregular flange plates (2) and web plates (3) after part lofting is carried out by a computer to obtain a typesetting program, inputting the typesetting program into a numerical control system of a plasma cutting machine, and accurately cutting plates on the plasma cutting machine according to the programming to carry out blanking;
secondly, determining an included angle between the flange plate (2) or the web plate (3) and the central line of the roller bed (4) on the roller bed (4) according to the rising angle of the rotary ladder, and curling according to different sections of the plane development drawing of the flange plate (2) or the web plate (3) and approximate radiuses;
drawing a horizontal projection profile of the rotary ladder on a horizontal bed mould (9) by using a plane projection method according to the drawing size, and dividing the projection profile into N equal parts corresponding to each step (7);
drawing a stepping line on the projection outline to determine the starting edge of the rotary ladder, calculating the height difference data of each bisector (8) relative to the starting edge by means of design software, respectively arranging support frames (5) at two ends of each bisector (8) by using profile steel according to each height difference data, and welding the support frames on a bed mould (9) to complete the construction of a left bed mould and a right bed mould;
spot welding and assembling a bottom plate (6) of the cranked box beam (1) on each jig frame;
assembling the web plate (3) and the flange plate (2) on the inner edge and the outer edge of each bottom plate (6) in a vertical spot welding mode;
seventhly, spot welding and assembling top plates on flange plates (2) and web plates (3) of all bottom plates (6) to shape the bent and twisted box-shaped beams (1), and scribing each stage of stair steps (7) on all the bent and twisted box-shaped beams (1) by using a laser projector according to an equal dividing line (8);
accurately blanking by adopting numerical control programming according to the development drawing of each stage of stair steps (7), scribing according to the height of each stage of stair steps (7), folding edges by using a bending machine, and performing spot welding assembly on each stage of stair steps (7) corresponding to each step scribing;
ninthly, all the assembly welding parts are welded in all directions;
r, inspected and coated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408181.6A CN109531062B (en) | 2018-11-23 | 2018-11-23 | Method for manufacturing uneven bending box beam rotary ladder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811408181.6A CN109531062B (en) | 2018-11-23 | 2018-11-23 | Method for manufacturing uneven bending box beam rotary ladder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109531062A CN109531062A (en) | 2019-03-29 |
| CN109531062B true CN109531062B (en) | 2021-04-30 |
Family
ID=65849435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811408181.6A Active CN109531062B (en) | 2018-11-23 | 2018-11-23 | Method for manufacturing uneven bending box beam rotary ladder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109531062B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110449834B (en) * | 2019-07-29 | 2021-10-01 | 中国一冶集团有限公司 | Manufacturing method of bent box-type column |
| CN111119502A (en) * | 2019-12-30 | 2020-05-08 | 共享钢构有限责任公司 | Machining method of tool jig frame |
| CN112814295A (en) * | 2020-12-31 | 2021-05-18 | 中建钢构武汉有限公司 | Manufacturing method of prefabricated staircase beam section and prefabricated staircase section |
| CN113378262B (en) * | 2021-05-24 | 2023-04-07 | 中建钢构武汉有限公司 | Method and device for acquiring machining information of cranked component and storage medium |
| CN114700398A (en) * | 2022-03-04 | 2022-07-05 | 中国一冶集团有限公司 | Manufacturing method of large-size square-round reducer pipe |
| CN114406627B (en) * | 2022-03-10 | 2023-04-11 | 山东天元安装集团有限公司 | Manufacturing method of bent-twisted parallelogram box-shaped component |
| CN114818096B (en) * | 2022-06-30 | 2022-09-06 | 中国二十二冶集团有限公司 | Manufacturing method of rotary steel ladder of dust remover based on BIM technology |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5720136A (en) * | 1996-01-26 | 1998-02-24 | Turner; Scott Alan | Modular staircase |
| CN103659182B (en) * | 2013-12-03 | 2015-09-23 | 中建钢构江苏有限公司 | The preparation method of bending box beam 360 ° of spiral stairses |
| CN106623529A (en) * | 2016-08-31 | 2017-05-10 | 浙江精工钢结构集团有限公司 | Solid-web large-section spiral stair box girder shaped like Chinese character ''mu'' and manufacturing method |
| CN107700769A (en) * | 2017-10-16 | 2018-02-16 | 中国冶集团有限公司 | A kind of assemble method of screw type steel ladder |
-
2018
- 2018-11-23 CN CN201811408181.6A patent/CN109531062B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN109531062A (en) | 2019-03-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109531062B (en) | Method for manufacturing uneven bending box beam rotary ladder | |
| ES2357466T3 (en) | PROCEDURE FOR PREPARING MECHANIZED PARTS SUCH AS TURBOMACHINE BLADES OR DISCS BLADES OF MONOBLOCK. | |
| CN106623529A (en) | Solid-web large-section spiral stair box girder shaped like Chinese character ''mu'' and manufacturing method | |
| CN101774109B (en) | Method for manufacturing double-spiral steel staircase without middle standing pillar | |
| CN114434105B (en) | Manufacturing method of bridge bolt welded steel truss girder hyperbolic chord member | |
| CN108723630B (en) | Manufacturing method of spiral twisted box | |
| CN110886186A (en) | BIM technology-based manufacturing and installation construction method for complex space curved surface special-shaped steel box girder | |
| CN107882220A (en) | A kind of construction method of L-shaped biplane hyperbolic aluminum facade | |
| CN110409841B (en) | Construction method of hyperbolic pipe truss structure | |
| CN107009097A (en) | The preparation method of large-scale bending steel stair | |
| CN113486414B (en) | Method for obtaining accurate manufacturing process diagram of overflowing surface horizontal steel bifurcated pipe through three-dimensional modeling | |
| JPH10187223A (en) | Automatic preparation system for welding robot operation program | |
| JP2004001226A (en) | Automatic preparation system for welding robot operation program | |
| CN111894222B (en) | Large-area multi-curve complex artistic facing modular structure for indoor theatre and combination thereof | |
| CN106204736A (en) | The expansion setting-out of a kind of three-dimensional surface triangle method of development makes new invention method | |
| CN116484467A (en) | Dome structure meshing method based on grasshopper | |
| CN110449834B (en) | Manufacturing method of bent box-type column | |
| CN111894223A (en) | Method for separating, externally processing and installing large-area multi-curved-surface artistic ribbon | |
| CN109059889B (en) | Application method of total station in special-shaped steel structure processing | |
| CN114406627B (en) | Manufacturing method of bent-twisted parallelogram box-shaped component | |
| CN217439295U (en) | Imitative stone roller of turning round limit scribbles aluminum plate platform curtain | |
| CN105921625B (en) | Rotate the processing method of steel box-girder | |
| CN115255814B (en) | Manufacturing method of steel shell space inextensible curved surface decorative plate unit | |
| CN219604961U (en) | Novel subway access & exit | |
| CN115533125B (en) | Manufacturing method of special-shaped stainless steel body based on 3D printing model |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |