CN117444631A - Steel B press-fitting assembly welding mould for hopper car middle beam and steel B processing method - Google Patents
Steel B press-fitting assembly welding mould for hopper car middle beam and steel B processing method Download PDFInfo
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- CN117444631A CN117444631A CN202311604205.6A CN202311604205A CN117444631A CN 117444631 A CN117444631 A CN 117444631A CN 202311604205 A CN202311604205 A CN 202311604205A CN 117444631 A CN117444631 A CN 117444631A
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- steel
- jacking oil
- oil cylinder
- handle
- width
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 68
- 239000010959 steel Substances 0.000 title claims abstract description 68
- 238000003466 welding Methods 0.000 title claims abstract description 34
- 238000003672 processing method Methods 0.000 title abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 16
- 230000007704 transition Effects 0.000 claims description 16
- 238000000034 method Methods 0.000 claims description 10
- 238000009434 installation Methods 0.000 claims description 3
- 238000003825 pressing Methods 0.000 abstract 6
- 238000003754 machining Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002436 steel type Substances 0.000 description 1
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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
- B23P23/04—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass for both machining and other metal-working operations
-
- 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
-
- 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
- B23P19/00—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes
- B23P19/02—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same
- B23P19/027—Machines for simply fitting together or separating metal parts or objects, or metal and non-metal parts, whether or not involving some deformation; Tools or devices therefor so far as not provided for in other classes for connecting objects by press fit or for detaching same using hydraulic or pneumatic means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
The invention discloses a steel-B press-fitting assembly welding jig for a hopper wagon center sill, which comprises a platform (1) and a gantry (11), wherein a top-pressing oil cylinder is arranged on the gantry (11), a plurality of lower airfoil top-pressing oil cylinders (4) and upper airfoil top-pressing oil cylinders (13) are arranged on one side of the platform (1), a row of positioning supporting structures are arranged on the other side of the platform (1), and a step structure consisting of a horizontal plane and two vertical planes is arranged on the positioning supporting structures of the top-pressing oil cylinders, the lower airfoil top-pressing oil cylinders (4) and the upper airfoil top-pressing oil cylinders (13) and is used for supporting steel-B. The invention provides a processing tool and a corresponding processing method aiming at the problem of how to reform standard B-type steel into a handle-shaped structure, and the processing tool is formed by cutting a B-type steel web, embedding a reinforcing plate, press-fitting and assembly welding the reinforcing plate into a handle-shaped structure, welding the handle-shaped structure and the like, and finally assembling and welding the reinforcing plate into a vehicle middle beam framework.
Description
Technical Field
The invention relates to the field of machining, in particular to a machining tool and a machining method for a middle beam of a railway transportation hopper car.
Background
The funnel-shaped truck used on the railway is characterized in that the middle beam of the truck body is generally formed by welding two pieces of B-shaped steel, and meanwhile, the B-shaped steel is required to be processed into a splayed structure with wide webs at two sides and narrow webs in the middle, namely, a handle-shaped structure is respectively arranged at the left side and the right side, as shown in figure 1. In the case of a standard steel-b modified into a handle-shaped structure, if a part of a web plate in the middle is cut off and then welded into a whole, the problem with this processing mode is that the strength and rigidity of the web plate in the middle are reduced by welding, while in the case of a middle beam, the middle part is the part with the largest bearing, the deformation is more serious than two sides, and the welding seam is easily broken to cause structural failure. If the handle-shaped steel is directly customized, the customization cost is higher although the strength and the rigidity meet the requirements.
Disclosure of Invention
Aiming at the problem of how to reform standard B-type steel into a handle-shaped structure, the invention provides a processing tool and a corresponding processing method, wherein the processing tool is formed by cutting a B-type steel web, embedding a reinforcing plate, press-fitting and assembly welding the reinforcing plate into a handle-shaped structure, welding the handle-shaped structure and the handle-shaped structure, and the like, and finally the middle beam framework is formed by assembly welding, and is the most important stressed part of a wagon body of a railway wagon.
The technical scheme of the invention is as follows:
a steel B press fitting assembly welding mould for a hopper car center sill comprises a platform 1 and a gantry 11, wherein a jacking oil cylinder is arranged on the gantry 11, a plurality of lower airfoil jacking oil cylinders 4 and upper airfoil jacking oil cylinders 13 are arranged on one side of the platform 1, a row of positioning support structures are arranged on the other side of the platform 1, a step structure consisting of a horizontal plane and two vertical planes is arranged on the positioning support structures of the jacking oil cylinder, the lower airfoil jacking oil cylinders 4 and the upper airfoil jacking oil cylinders 13, the step structure is used for supporting steel B, the horizontal plane width of the positioning support structure used for supporting the middle part of the steel B is equal to the width of a steel B web, and the horizontal plane width of the positioning support structure used for supporting two end parts of the steel B is larger than the width of the steel B web.
The width of the web plate of the second steel is L, the web plates at two ends of the second steel are required to be embedded with reinforcing plates with the width of H, the positioning support structure is divided into a handle position positioning support structure 9, a handle transition position positioning support structure 8 and a middle position positioning support structure 7, wherein the horizontal plane width of the step structure of the handle position positioning support structure 9 is equal to L+H, the horizontal plane width of the step structure of the handle transition position positioning support structure 8 is transited from L+H to L, the horizontal plane width of the step structure of the middle position positioning support structure 7 is L, and the outer sides of the three positioning support structures are flush.
The installation height of the lower airfoil jacking cylinder 4 is lower than that of the upper airfoil jacking cylinder 13.
The lower airfoil jacking oil cylinder 4 and the upper airfoil jacking oil cylinder 13 are fixed on the platform 1 through the oil cylinder support 3 and the clamping piece 5.
A row of lower airfoil surface jacking oil cylinders 4 are arranged, and a lower airfoil surface jacking oil cylinder 4 is arranged at the position, which is opposite to the cutter handle transition position, of the positioning support structure 8, wherein the width of the lower airfoil surface jacking oil cylinder is equal to L; the upper airfoil tip cylinder 13 is disposed outside the lower airfoil tip cylinder 4 opposite the handle transition positioning support structure 8.
A method for processing a second steel for a hopper car center sill is characterized by comprising the following steps:
step one, cutting the wire from outside to inside along the web plate of the steel section;
step two, expanding the web along the cutting lines, embedding reinforcing plates and compacting;
and thirdly, welding the stiffening plate and the web plate.
In the first step: cutting lines at positions close to the lower wing plate of the steel section, and forming a semi-through gap on the web plate.
The second step is executed by adopting the mould: firstly, placing the B-shaped steel on a handle position positioning supporting structure 9, a handle transition position positioning supporting structure 8 and a middle position positioning supporting structure 7, enabling the lower airfoil surface of the B-shaped steel to be attached to the lower vertical surface of a step structure of the handle position positioning supporting structure 9, then starting an upper airfoil surface jacking oil cylinder 13 and a lower airfoil surface jacking oil cylinder 4 at the middle position, and finally placing a stiffening plate into a propped notch and starting the lower airfoil surface jacking oil cylinder 4 at the outer side to compress.
In the third step: firstly, spot welding reinforcing plates on the mould, and taking the steel with the shape of the steel B from the mould and then carrying out subsequent welding.
The beneficial effects of the invention are as follows:
the two sides of the steel B are embedded with the plates to form the handle structure, the strength and the rigidity of the middle structure of the steel B are not changed, the stress on the two sides is small, the use is not affected even if the strength and the rigidity after welding are poor, and the technical problem to be solved in the press-fitting process of the steel B handle beam is solved: the handle forming process of the handle-shaped middle beam single-piece beam formed by the steel section is simple, and the process technical requirements of products are met.
The cold bending is adopted, the metallographic structure of the beam is not damaged, and only two persons are needed to operate, so that the assembly welding efficiency of the single-piece knife handle beam can be greatly improved, and the assembly welding quality of the knife handle beam is ensured.
Drawings
Fig. 1 is a schematic view of the structure of the handle beam.
Fig. 2 is a schematic structural view of the press-fitting assembly welding mold of the steel type (the present figure is a half-drawing, because the platform is too long, and the other half of the structure is not shown in the drawing).
Fig. 3 is a side view of fig. 2.
Fig. 4 is an a-direction view of fig. 2.
Fig. 5 is a B-direction view of fig. 2.
Fig. 6 is a view in the direction C of fig. 2.
Detailed Description
Example 1:
as shown in fig. 1, a stiffening plate is embedded into the webs at the two ends of the steel section, so that the width of the webs at the two ends is increased.
Fig. 2 is a top view of an assembly welding mould for the steel of the type B, the whole structure comprises a platform 1 and a gantry 11, the platform 1 is positioned in the middle of the upper surface of a bottom supporting structure, gantry rails are arranged on two sides of the bottom supporting structure, a vertical downward jacking oil cylinder is arranged on the gantry 11, a plurality of lower airfoil jacking oil cylinders 4 and upper airfoil jacking oil cylinders 13 are arranged on one side of the platform 1 and used for bearing the steel of the type B, a row of positioning supporting structures are arranged on the other side of the platform 1, an L-shaped step structure consisting of a horizontal plane and two vertical planes is arranged on the positioning supporting structures of the jacking oil cylinders 4 and the upper airfoil jacking oil cylinders 13 of the lower airfoil jacking oil cylinders, the step structure is used for supporting the steel of the type B, the width of the horizontal plane of the positioning supporting structure used for supporting the middle part of the steel of the type B is equal to the width of the web of the steel of the type B, and the width of the horizontal plane of the positioning supporting structure used for supporting the two ends of the steel of the type B is larger than the width of the web of the steel of the type B, and the design is used for expanding a cutting seam on the steel of the type B.
The width of the web plate of the second steel is L, the web plates at two ends of the second steel are required to be embedded with reinforcing plates with the width of H, the positioning support structure is divided into a handle position positioning support structure 9, a handle transition position positioning support structure 8 and a middle position positioning support structure 7, wherein the horizontal plane width of the step structure of the handle position positioning support structure 9 is equal to L+H, the horizontal plane width of the step structure of the handle transition position positioning support structure 8 is transited from L+H to L, the horizontal plane width of the step structure of the middle position positioning support structure 7 is L, and the outer sides of the three positioning support structures are flush.
The installation height of the lower airfoil surface jacking cylinder 4 is lower than that of the upper airfoil surface jacking cylinder 13, and the front end of the cylinder is provided with a cylinder body.
The lower airfoil jacking oil cylinder 4 and the upper airfoil jacking oil cylinder 13 are fixed on the platform 1 through the oil cylinder support 3 and the clamping piece 5.
A row of lower airfoil surface jacking oil cylinders 4 are arranged, and a lower airfoil surface jacking oil cylinder 4 is arranged at the position, which is opposite to the cutter handle transition position, of the positioning support structure 8, wherein the width of the lower airfoil surface jacking oil cylinder is equal to L; the upper airfoil jacking cylinder 13 is arranged on the outer side of the lower airfoil jacking cylinder 4 opposite to the knife handle transition position positioning support structure 8, and as can be seen from fig. 2, the lower airfoil jacking cylinder 4, the upper airfoil jacking cylinder 13, the lower airfoil jacking cylinder 4 and the lower airfoil jacking cylinder 4 are arranged in sequence from left to right, and each lower airfoil cylinder 4 is opposite to one positioning support structure.
A method for processing a second steel for a hopper car center sill is characterized by comprising the following steps:
step one, cutting the wire from outside to inside along the web plate of the steel section;
step two, expanding the web along the cutting lines, embedding reinforcing plates and compacting;
and thirdly, welding the stiffening plate and the web plate.
In the first step: cutting lines at positions close to the lower wing plate of the steel section, forming a semi-through gap on the web plate, and processing a wedge-shaped notch at one end of the gap.
The second step is executed by adopting the mould: firstly, placing the B-shaped steel on a handle position positioning supporting structure 9, a handle transition position positioning supporting structure 8 and a middle position positioning supporting structure 7, enabling the lower airfoil surface of the B-shaped steel to be attached to the lower vertical surface of a step structure of the handle position positioning supporting structure 9, enabling a gap with the distance H between the lower vertical surface of the step structure of the middle position positioning supporting structure 7 and the lower airfoil surface of the B-shaped steel, then starting an upper airfoil surface jacking cylinder 13 and a lower airfoil surface jacking cylinder 4 at the middle position, expanding a web plate under the action of thrust of the cylinder and reaction force of the positioning supporting structure, and finally placing a stiffening plate into an expanded notch and starting the lower airfoil surface jacking cylinder 4 at the outer side to compress. The hydraulic cylinders are started in a certain sequence, namely a lower airfoil surface jacking oil cylinder 4 and an upper airfoil surface jacking oil cylinder 13 which are positioned at the inner side of the cutter handle transition position positioning support structure 8 are started at first, one lower airfoil surface jacking oil cylinder 4 is not started at the moment respectively at the left side and the right side of the upper airfoil surface jacking oil cylinder 13, one lower airfoil surface jacking oil cylinder 4 which is positioned at the inner side of the upper airfoil surface jacking oil cylinder 13 is started after a reinforcing plate is put in, and the other lower airfoil surface jacking oil cylinder 4 which is positioned at the outermost side is started after the reinforcing plate is jacked to a preset position.
In the third step: firstly, spot welding reinforcing plates on the mould, taking the steel B from the mould, then carrying out subsequent supplementary welding to form welding seams, and finally, assembling and welding two steel B into a middle beam.
Claims (9)
1. A B-type steel press-fitting assembly welding mould for hopper car center sill comprises a platform (1) and a gantry (11), and is characterized in that: the hydraulic jack is characterized in that a jacking oil cylinder is arranged on the gantry (11), a plurality of lower airfoil jacking oil cylinders (4) and an upper airfoil jacking oil cylinder (13) are arranged on one side of the platform (1), a row of positioning supporting structures are arranged on the other side of the platform (1), a step structure consisting of a horizontal plane and two vertical planes is arranged on the positioning supporting structures of the jacking oil cylinders (4) and the upper airfoil jacking oil cylinders (13), the step structure is used for supporting the steel section, the width of the horizontal plane of the positioning supporting structure used for supporting the middle part of the steel section is equal to the width of the steel section web of the steel section, and the width of the horizontal plane of the positioning supporting structure used for supporting the two end parts of the steel section is larger than the width of the steel section web of the steel section.
2. The steel-b press-fitting assembly welding jig for a hopper car center sill according to claim 1, wherein: the width of the web plate of the second steel is L, the web plates at two ends of the second steel are required to be embedded with reinforcing plates with the width of H, the positioning support structure is divided into a handle position positioning support structure (9), a handle transition position positioning support structure (8) and a middle position positioning support structure (7), wherein the horizontal plane width of the step structure of the handle position positioning support structure (9) is equal to L+H, the horizontal plane width of the step structure of the handle transition position positioning support structure (8) is transited from L+H to L, the horizontal plane width of the step structure of the middle position positioning support structure (7) is L, and the outer sides of the three positioning support structures are flush.
3. The steel-b press-fitting assembly welding jig for a hopper car center sill according to claim 2, wherein: the installation height of the lower airfoil surface jacking oil cylinder (4) is lower than that of the upper airfoil surface jacking oil cylinder (13).
4. The steel-b press-fitting assembly welding jig for a hopper car center sill according to claim 2, wherein: the lower airfoil surface jacking oil cylinder (4) and the upper airfoil surface jacking oil cylinder (13) are fixed on the platform (1) through the oil cylinder support (3) and the clamping piece (5).
5. The steel-b press-fitting assembly welding jig for a hopper car center sill according to claim 2, wherein: a row of lower airfoil surface jacking oil cylinders (4) are arranged, and the lower airfoil surface jacking oil cylinders (4) are arranged at the position, which is opposite to the transition position of the cutter holder, of the positioning support structure (8) and has the width equal to L; the upper airfoil surface jacking oil cylinder (13) is arranged at the outer side of the lower airfoil surface jacking oil cylinder (4) opposite to the cutter handle transition position positioning support structure (8).
6. A method for processing a second steel for a hopper car center sill is characterized by comprising the following steps:
step one, cutting the wire from outside to inside along the web plate of the steel section;
step two, expanding the web along the cutting lines, embedding reinforcing plates and compacting;
and thirdly, welding the stiffening plate and the web plate.
7. The method for processing the steel for the center sill of the hopper car according to claim 1, wherein in the step one: cutting lines at positions close to the lower wing plate of the steel section, and forming a semi-through gap on the web plate.
8. The method for processing a center sill of a hopper car according to claim 1, wherein the second step is performed by using the mold according to claim 2: firstly, placing the steel B on a handle position positioning supporting structure (9), a handle transition position positioning supporting structure (8) and a middle position positioning supporting structure (7), enabling the lower airfoil surface of the steel B to be attached to the lower vertical surface of a step structure of the handle position positioning supporting structure (9), then starting an upper airfoil surface jacking oil cylinder (13) and a lower airfoil surface jacking oil cylinder (4) at the middle position, and finally placing a stiffening plate into a propped notch and starting the lower airfoil surface jacking oil cylinder (4) at the outer side to compress.
9. The method for processing the steel for the center sill of the hopper car as recited in claim 8, wherein in the third step: firstly, spot welding reinforcing plates on the mould, and taking the steel with the shape of the steel B from the mould and then carrying out subsequent welding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311604205.6A CN117444631A (en) | 2023-11-28 | 2023-11-28 | Steel B press-fitting assembly welding mould for hopper car middle beam and steel B processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311604205.6A CN117444631A (en) | 2023-11-28 | 2023-11-28 | Steel B press-fitting assembly welding mould for hopper car middle beam and steel B processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117444631A true CN117444631A (en) | 2024-01-26 |
Family
ID=89593030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311604205.6A Pending CN117444631A (en) | 2023-11-28 | 2023-11-28 | Steel B press-fitting assembly welding mould for hopper car middle beam and steel B processing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117444631A (en) |
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2023
- 2023-11-28 CN CN202311604205.6A patent/CN117444631A/en active Pending
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