CN109604849A - A kind of welding structure and technique of semi-trailer longitudinal beam - Google Patents
A kind of welding structure and technique of semi-trailer longitudinal beam Download PDFInfo
- Publication number
- CN109604849A CN109604849A CN201811578349.8A CN201811578349A CN109604849A CN 109604849 A CN109604849 A CN 109604849A CN 201811578349 A CN201811578349 A CN 201811578349A CN 109604849 A CN109604849 A CN 109604849A
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- China
- Prior art keywords
- stringer
- welding
- gooseneck
- plate
- longitudinal beam
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Arc Welding In General (AREA)
Abstract
The invention belongs to aluminum alloy solder technology fields, it is related to the welding structure and technique of a kind of semi-trailer longitudinal beam, including integrally formed stringer and the stringer gooseneck stiffening plate for being welded on stringer lower end, the arc-shaped shape in the middle part of stringer lower end, by changing longitudinal beam structure, by longitudinal beam front section, longitudinal-beam web plate, stringer back segment is integrally formed, welding procedure is changed simultaneously, change welding position, reduce fusion length, to improve welding efficiency, promote manufacturing schedule, the present invention is by stringer gooseneck stiffening plate extended length, it is 22mm that thickness, which thickeies, after guaranteeing the welding of stringer gooseneck stiffening plate, stringer height does not change, semitrailer bearing capacity does not change, stringer soldering simultaneously reduces welding bead quantity, improve welding efficiency, reduce the labor intensity of welder, improve manufacturing schedule.
Description
Technical field
The invention belongs to aluminum alloy solder technology field, it is related to welding structure and its Welder of a kind of semi-trailer longitudinal beam
Skill.
Background technique
Aluminium alloy density 2.7g/cm3, only the 1/3 of steel, aluminium alloy corrosion resisting property is good, is not required to any safeguard procedures
Long-term to maintain any surface finish, in addition aluminium alloy also has good welding and moulding processing performance.To meet wanting for energy-saving and emission-reduction
Ask, automotive light weight technology has become the common recognition of automobile industry, and largely using aluminium alloy element be automobile lightweight the most
Feasible mode.
Semitrailer is that one kind extensively sends out the heavy duty transport vehicles used, and to meet intensity requirement, semitrailer is adopted more at present
Use steel component；Though all aluminium alloy semitrailer product also appears in the newspapers, in the level for also predominantly staying in tank truck and van,
It can not be extended to framework type container semi-trailer, this is primarily due to framework type container semi-trailer vehicle and does not have upper dress always
At, and frame assembly does not have the components such as collar tie beam and floor and side crossbeam, the intensity of vehicle is undertaken by stringer completely, half-and-half
The intensity requirement of trailer longitudinal beam greatly improves, and the aluminium alloy stringer of ordinary construction is unable to satisfy the intensity requirement.Its main cause
It is often to deform during the aluminium alloy semi-trailer longitudinal beam welding circulated on Vehicles Collected from Market, so that weldment group pair
Accuracy reduces, and the semi-trailer longitudinal beam mechanical property after final welding is not able to satisfy production requirement.
Stringer in the prior art includes longitudinal beam front section, longitudinal-beam web plate and stringer back segment, if by longitudinal beam front section, stringer abdomen
Plate, stringer back segment are welded after being respectively welded with stringer gooseneck stiffening plate again, and the welding workload of worker is big, complicated for operation,
Welded part heat input is of long duration, heat is big, easily causes influence to the welding deformation of welding, causes production efficiency low, serious shadow
Ring manufacturing schedule.
Summary of the invention
In view of this, the present invention in order to solve by welding method in the prior art weld semi-trailer longitudinal beam, worker's
Welding workload is big, complicated for operation, and welded part heat input is of long duration, heat is big, easily causes influence to the welding deformation of welding,
It is vertical to provide a kind of semitrailer for the problem of quality of production and production efficiency are low, and mechanical property is not able to satisfy production requirement after welding
The welding structure and technique of beam.
In order to achieve the above objectives, the present invention provides a kind of welding structure of semi-trailer longitudinal beam, including integrally formed stringer,
The stringer lower wing plate for being welded on stringer back segment bottom and the stringer gooseneck stiffening plate for being welded on stringer lower end, the middle part of stringer lower end
Arc-shaped shape, also cry longitudinal-beam web plate for stringer bending place, longitudinal-beam web plate with a thickness of 10mm, stringer gooseneck stiffening plate with a thickness of 22mm,
And stringer gooseneck stiffening plate is insertion slot type structure, is bent with stringer crooked position consistency, the group pair when convenient for stringer welding, and
Reduce welding bead quantity.
A kind of welding procedure of semi-trailer longitudinal beam, comprising the following steps:
A, stringer gooseneck stiffening plate back segment point is affixed to the corresponding welding position of stringer back segment stringer lower wing plate, stringer gooseneck
Stringer is overturn after stiffening plate solid point；
B, stringer gooseneck is reinforced by plate benging by bending tool and is bonded with stringer bending place, stringer bending place is also named vertical
Web, it is ensured that solid point stringer gooseneck stiffening plate and longitudinal-beam web plate after stringer gooseneck stiffening plate and longitudinal-beam web plate contact surface gapless
Welding position；
C, stringer gooseneck stiffening plate and longitudinal-beam web plate weld are opened into single V groove, 55 ° of grooves are opened on both sides；Stringer gooseneck adds
The welding manner of strong plate and longitudinal beam front section is three layer of four weldering, and welding parameter from inside to outside is successively are as follows: first layer welding current
Be 25.3~26.1V for 260~280A, weldingvoltage, second layer welding current is 240~260A, weldingvoltage be 24.7~
25.3V, third layer welding current is 220~240A, weldingvoltage is 23.6~24.7V；After stringer gooseneck stiffening plate and stringer
The welding manner of section stringer lower wing plate is that two layers of twice weldering is symmetrically welded, and wherein inner welded electric current is 260~280A, welds electricity
Pressure is 25.3~26.1V, and outer layer welding current is 240~260A, weldingvoltage is 24.7~25.3V；Speed of welding is 8
It is 18~22L/min, welding gun and vertical direction that~10mm/s, protective gas, which are high purity inert gas, shield gas flow rate,
Inclination angle is 5~20 °.
Further, step A uses the welding manner of circular hole boxing by stringer gooseneck stiffening plate and the straight position of stringer back segment
Solid point；Solid point length is 50mm, and adjacent solid point is interrupted 400mm.
Further, step B longitudinal beam front section and longitudinal-beam web plate flatness≤1mm.
Further, it to be polished and be preheated before the welding of step C weld seam, postwelding polishes weld seam.
Further, protective gas is 99.999%Ar in step C.
Further, step C postwelding entirety stringer is orthopedic, guarantees that longitudinal beam front section and stringer back segment horizontal gradient error are less than 3mm.
Further, there are the not welding positions of 50mm for step C stringer lower wing plate lower end stringer gooseneck stiffening plate end.
The beneficial effects of the present invention are:
1, since aluminium alloy has the characteristics such as thermal conductivity is good, ductility is good, aluminium alloy is in the welding process, non-uniform to add
Heat makes weld seam and its neighbouring temperature very high, and after cooling, weld seam just produces different degrees of contraction and internal stress (in longitudinal direction
Stress and lateral internal stress), cause welding structure to generate various modifications.
The welding procedure of semi-trailer longitudinal beam disclosed in this invention changes under the premise of not changing semitrailer bearing capacity
Become longitudinal beam structure, longitudinal beam front section, longitudinal-beam web plate, stringer back segment are integrally formed, while changing welding procedure, welding position is changed
It sets, reduces fusion length, to improve welding efficiency, promote manufacturing schedule.The present invention is thick by stringer gooseneck stiffening plate extended length
It is 22mm that degree, which thickeies, and after guaranteeing the welding of stringer gooseneck stiffening plate, stringer height does not change, and semitrailer bearing capacity does not occur
Change.
2, aluminium alloy can be deformed after welding, and excessive welding bead quantity and unreasonable welding sequence can increase welding
Deflection, this materially increases postwelding adjusting amount, wastes many working hours, will lead to manufacturing schedule when serious and prolong
Phase.It deforms to further solve aluminum alloy piping welding, is analyzed by the influence factor to welding deformation, the invention proposes
New longitudinal girder welding machine structure and welding procedure, the welding parameters such as change electric current, voltage, speed of welding, to reduce welding deformation
Amount.
The welding procedure of semi-trailer longitudinal beam disclosed in this invention changes under the premise of not changing semitrailer bearing capacity
Become longitudinal beam structure, change welding procedure, stringer soldering reduces welding bead quantity, improves welding efficiency, reduces welder
Labor intensity, improve manufacturing schedule.The quantity for reducing welding bead not only increases production efficiency, and reduces larger
The generation of welding deformation orthopedic reduces labor intensity for the later period.
Detailed description of the invention
In order to keep the purpose of the present invention, technical scheme and beneficial effects clearer, the present invention provides following attached drawing and carries out
Illustrate:
Fig. 1 is that stringer gooseneck stiffening plate of the present invention changes front longitudinal beam soldering welding structure schematic diagram；
Fig. 2 is that stringer gooseneck stiffening plate of the present invention changes front longitudinal beam weld seam welding position schematic diagram；
Fig. 3 is that the weld seam of welding position a and welding position b weld schematic diagram in Fig. 2；
Fig. 4 is that stringer gooseneck stiffening plate of the present invention changes floor side member soldering welding structure schematic diagram；
Fig. 5 is that stringer gooseneck stiffening plate of the present invention changes floor side member weld seam welding position schematic diagram；
Fig. 6 is that the weld seam of welding position c and welding position d weld schematic diagram in Fig. 5.
Specific embodiment
Below by a preferred embodiment of the present invention will be described in detail.
Appended drawing reference in Figure of description includes:
Stringer 1, stringer lower wing plate 2, longitudinal-beam web plate 3, stringer gooseneck stiffening plate 4.
Stringer lower wing plate is welded in the welding structure of semi-trailer longitudinal beam in the prior art as described in Fig. 1~3,1 bottom end of stringer
2, stringer gooseneck stiffening plate 4 is welded on the middle rear end of stringer lower wing plate 2.
A kind of welding structure of semi-trailer longitudinal beam as described in Fig. 4~6, including integrally formed stringer 1 and be welded on it is vertical
The stringer gooseneck stiffening plate 4 of beam lower end, the arc-shaped shape in the middle part of stringer lower end, also cry longitudinal-beam web plate 3 for stringer bending place, one at
The longitudinal-beam web plate 3 of type is with a thickness of 10mm, and 4 extended length of stringer gooseneck stiffening plate is concordant with longitudinal beam front section end to front end, stringer
Gooseneck stiffening plate 4 is with a thickness of 22mm, and stringer gooseneck stiffening plate 4 is insertion slot type structure, is bent with stringer crooked position consistency,
Group pair when convenient for stringer welding, and welding bead quantity is reduced, there are 50mm's for 4 end of stringer back segment lower end stringer gooseneck stiffening plate
Not welding position.
A kind of welding procedure of semi-trailer longitudinal beam, comprising the following steps:
A, stringer gooseneck stiffening plate back segment point is affixed to the corresponding welding position of stringer bottom end stringer lower wing plate, stringer gooseneck
Stringer is overturn after stiffening plate solid point；Using the welding manner of circular hole boxing by stringer gooseneck stiffening plate and stringer back segment stringer bottom wing
Plate flat part site is solid；Solid point length is 50mm, and adjacent solid point is interrupted 400mm.
B, stringer gooseneck is reinforced by plate benging by bending tool and is bonded with stringer bending place, stringer bending place is also named vertical
Web, longitudinal beam front section and longitudinal-beam web plate flatness≤1mm, it is ensured that stringer gooseneck stiffening plate and longitudinal-beam web plate contact surface gapless
The welding position of solid point stringer gooseneck stiffening plate and longitudinal-beam web plate afterwards；
C, stringer gooseneck stiffening plate and longitudinal-beam web plate weld are opened into single V groove, 55 ° of grooves are opened on both sides；Stringer gooseneck adds
The welding manner of strong plate and longitudinal beam front section is three layer of four weldering, and welding parameter from inside to outside is successively are as follows: first layer welding current
Be 25.3~26.1V for 260~280A, weldingvoltage, second layer welding current is 240~260A, weldingvoltage be 24.7~
25.3V, third layer welding current is 220~240A, weldingvoltage is 23.6~24.7V；After stringer gooseneck stiffening plate and stringer
The stringer lower wing plate welding manner of section is that two layers of twice weldering is symmetrically welded, and wherein inner welded electric current is 260~280A, welds electricity
Pressure is 25.3~26.1V, and outer layer welding current is 240~260A, weldingvoltage is 24.7~25.3V；Speed of welding is 8
It is that 18~22L/min, welding gun and vertical direction are inclined that~10mm/s, protective gas, which are 99.999%Ar, shield gas flow rate,
Angle is 5~20 °, to be polished and be preheated before weld seam welding, postwelding polishes weld seam.Postwelding entirety stringer is orthopedic, protects
It demonstrate,proves longitudinal beam front section and stringer back segment horizontal gradient error is less than 3mm.
The welding procedure of semi-trailer longitudinal beam of the present invention changes stringer knot under the premise of not changing semitrailer bearing capacity
Structure changes welding procedure, and stringer soldering reduces welding bead quantity, improves welding efficiency, and the labour for reducing welder is strong
Degree, improves manufacturing schedule.
Finally, it is stated that preferred embodiment above is only used to illustrate the technical scheme of the present invention and not to limit it, although logical
It crosses above preferred embodiment the present invention is described in detail, however, those skilled in the art should understand that, can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (8)
1. a kind of welding structure of semi-trailer longitudinal beam, which is characterized in that including integrally formed stringer, be welded on stringer back segment bottom
The stringer lower wing plate in portion and the stringer gooseneck stiffening plate for being welded on stringer lower end, the arc-shaped shape in the middle part of stringer lower end, stringer are curved
Also it is longitudinal-beam web plate at folding, longitudinal-beam web plate is with a thickness of 10mm, and stringer gooseneck stiffening plate is with a thickness of 22mm, and stringer gooseneck stiffening plate
It for insertion slot type structure, is bent with stringer crooked position consistency, the group pair when convenient for stringer welding, and reduces welding bead quantity.
2. the welding procedure of semi-trailer longitudinal beam as described in claim 1, which comprises the following steps:
A, stringer gooseneck stiffening plate back segment point is affixed to the corresponding welding position of stringer back segment stringer lower wing plate, stringer gooseneck is reinforced
Stringer is overturn after plate solid point；
B, stringer gooseneck is reinforced by plate benging by bending tool and is bonded with stringer bending place, stringer abdomen is also in stringer bending place
Plate, it is ensured that the weldering of solid point stringer gooseneck stiffening plate and longitudinal-beam web plate after stringer gooseneck stiffening plate and longitudinal-beam web plate contact surface gapless
Connect position；
C, stringer gooseneck stiffening plate and longitudinal-beam web plate weld are opened into single V groove, 55 ° of grooves are opened on both sides；Stringer gooseneck stiffening plate
Welding manner with longitudinal beam front section is three layer of four weldering, and welding parameter from inside to outside is successively are as follows: first layer welding current is 260
~280A, weldingvoltage are 25.3~26.1V, and second layer welding current is 240~260A, weldingvoltage is 24.7~25.3V,
Third layer welding current is 220~240A, weldingvoltage is 23.6~24.7V；Stringer gooseneck stiffening plate and stringer back segment stringer
The welding manner of lower wing plate is that two layers of twice weldering is symmetrically welded, and wherein inner welded electric current is 260~280A, weldingvoltage is
25.3~26.1V, outer layer welding current is 240~260A, weldingvoltage is 24.7~25.3V；Speed of welding is 8~
It is that 18~22L/min, welding gun and vertical direction are inclined that 10mm/s, protective gas, which are high purity inert gas, shield gas flow rate,
Angle is 5~20 °.
3. the welding procedure of semi-trailer longitudinal beam as described in claim 1, which is characterized in that step A uses the weldering of circular hole boxing
Mode is connect to consolidate stringer gooseneck stiffening plate and stringer back segment flat part site；Solid point length is 50mm, adjacent solid point interruption
400mm。
4. the welding procedure of semi-trailer longitudinal beam as described in claim 1, which is characterized in that step B longitudinal beam front section and stringer abdomen
Plate flatness≤1mm.
5. the welding procedure of semi-trailer longitudinal beam as described in claim 1, which is characterized in that be carried out before the welding of step C weld seam
Polishing and preheating, postwelding polish weld seam.
6. the welding procedure of semi-trailer longitudinal beam as described in claim 1, which is characterized in that protective gas is in step C
99.999%Ar.
7. the welding procedure of semi-trailer longitudinal beam as described in claim 1, which is characterized in that step C postwelding entirety stringer is orthopedic,
Guarantee that longitudinal beam front section and stringer back segment horizontal gradient error are less than 3mm.
8. the welding procedure of semi-trailer longitudinal beam as described in claim 1, which is characterized in that the stringer lower wing plate lower end step C is vertical
There are the not welding positions of 50mm for beam gooseneck stiffening plate end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811578349.8A CN109604849A (en) | 2018-12-21 | 2018-12-21 | A kind of welding structure and technique of semi-trailer longitudinal beam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811578349.8A CN109604849A (en) | 2018-12-21 | 2018-12-21 | A kind of welding structure and technique of semi-trailer longitudinal beam |
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| CN109604849A true CN109604849A (en) | 2019-04-12 |
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| CN201811578349.8A Pending CN109604849A (en) | 2018-12-21 | 2018-12-21 | A kind of welding structure and technique of semi-trailer longitudinal beam |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829007A (en) * | 2021-09-09 | 2021-12-24 | 中车石家庄车辆有限公司 | End-widening type single-piece middle beam and manufacturing method thereof |
| CN117922624A (en) * | 2024-03-21 | 2024-04-26 | 成都中车长客轨道车辆有限公司 | Rail transit vehicle underframe structure and processing method |
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| US20150239068A1 (en) * | 2014-02-24 | 2015-08-27 | Metalsa S.A. De C.V. | Process of positioning automotive components |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113829007A (en) * | 2021-09-09 | 2021-12-24 | 中车石家庄车辆有限公司 | End-widening type single-piece middle beam and manufacturing method thereof |
| CN113829007B (en) * | 2021-09-09 | 2022-09-13 | 中车石家庄车辆有限公司 | End-widening type single-piece middle beam and manufacturing method thereof |
| CN117922624A (en) * | 2024-03-21 | 2024-04-26 | 成都中车长客轨道车辆有限公司 | Rail transit vehicle underframe structure and processing method |
| CN117922624B (en) * | 2024-03-21 | 2024-06-11 | 成都中车长客轨道车辆有限公司 | Rail transit vehicle underframe structure and processing method |
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