CN113500320A - Assembly welding process for front-end module of underframe of corrugated plate plug-in type box structure - Google Patents
Assembly welding process for front-end module of underframe of corrugated plate plug-in type box structure Download PDFInfo
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- CN113500320A CN113500320A CN202110867720.8A CN202110867720A CN113500320A CN 113500320 A CN113500320 A CN 113500320A CN 202110867720 A CN202110867720 A CN 202110867720A CN 113500320 A CN113500320 A CN 113500320A
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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
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
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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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/04—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work
- B23K37/0426—Fixtures for other work
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Abstract
The invention discloses a module assembly welding process for the front end of an underframe of a corrugated plate plug-in type box structure, which comprises the following steps of S1, modular assembly; s2, forming a box-type frame main body structure; s3, welding the box-type frame main body structure; s4, paving the corrugated plate assembly and the side patch plate, and fixing the corrugated plate assembly by spot welding; s5, paving the sealing plates, and welding and fixing the sealing plates clockwise along the circumferential direction of the sealing plates, wherein the number of the sealing plates is two; and S6, welding corrugated plates, and welding the corrugated plates after the tail ends of the side beam assemblies are spot-welded to fix the stay bars. The assembly welding process divides the problem of welding deformation of the plug-in type box type front end module, and disperses the welding heat input amount by assembling the end plate assembly, the side beam assembly and the corrugated plate assembly in a pre-modularization mode; the fan-shaped reversible deformation of 2 to 4mm is prefabricated by the corrugated plate composition, the problem of longitudinal deflection of the end plate is solved, and the machining quality is guaranteed.
Description
Technical Field
The invention relates to the technical field of production and processing of railway vehicles, in particular to a process for assembling and welding a front-end module of an underframe of a corrugated plate plug-in type box structure for a railway vehicle.
Background
The 100% low-floor railway passenger car is more and more popular with the advantages of convenience and rapidness, and the front end module of the underframe of the 100% low-floor which is commonly used at present is of a corrugated plate plug-in type box structure.
In the prior art, a plug-in type box type structure is excellent in collision energy absorption and static bearing, but the structural welding deformation is very difficult to control, so that the straightness of the front end and the side angle are difficult to guarantee.
In actual production, the precision of the front end connection surface and the side wall plate rivet pulling surface is required to be ensured through machining. Even so, because the existence of horizontal and axial distortion, lead to front end plate and curb plate machining back thickness inequality, articulated and wallboard assembly difficulty, the while is whole the plane degree guarantee also can influence floor installation quality badly, need carry out the on-the-spot type of being researched and repaired, influence production efficiency.
Based on the above technical problems, a skilled person in the art needs to develop an assembly welding process for a front end module of an underframe of a corrugated plate plug-in type box structure for a railway passenger car, so as to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide an assembly welding process for a front end module of an underframe of a corrugated plate plug-in type box structure for a railway passenger car, which solves the problems of difficult hinge joint and wallboard assembly caused by difficult welding deformation control in the assembly welding process of the front end module of the corrugated plate plug-in type box structure underframe, ensures that the integral flatness of the welded front end module is controlled within 2mm, and improves the assembly welding quality and production efficiency of the front end module.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention discloses an assembly welding process for a front-end module of an underframe of a corrugated plate plug-in type box structure, which mainly comprises the following steps of:
s1, modular assembly, wherein the modular assembly comprises assembly welding of end plate assemblies, assembly welding of side beam assemblies and assembly welding of corrugated plate assemblies, and the assembly welding of the end plate assemblies, the side beam assemblies and the corrugated plate assemblies are leveled and aligned respectively;
s2, forming a box-type frame main body structure, namely sequentially assembling a side beam assembly, a long sealing plate, a short sealing plate, an end plate assembly and a side patch plate assembly to form the box-type frame main body structure, and compressing and fixing the box-type frame main body structure through a clamp in a spot welding manner;
s3, welding the box-type frame main body structure;
s4, paving the corrugated plate assembly and the side patch plate, and fixing the corrugated plate assembly by spot welding;
s5, paving and welding and fixing the sealing plates clockwise along the circumferential direction of the sealing plates, wherein the number of the sealing plates is two;
and S6, welding corrugated plates, and welding the corrugated plates after the tail ends of the side beam assemblies are spot-welded to fix the stay bars.
Further, in step S3, the welding procedure for the box-type frame main body structure is:
s301, firstly welding a vertical welding line a of the box type frame main body structure;
s302, performing first-layer welding of groove welding seams b between the side beam assemblies and the end plate assemblies;
s303, then alternately welding transverse welding seams c;
and S304, finally, completing the welding of the rest longitudinal welding seams.
Further, in step S4, the step of paving and fixing the corrugated plate by spot welding includes:
s401, fixing a single corrugated plate by diagonal spot welding, and firstly fixing a point A in a spot welding manner, wherein the point A is the center of a long sealing plate and formed by the corrugated plates;
s402, fixing a point B at the joint of the diagonal corrugated plate component and the short sealing plate by spot welding;
s403, after the corrugated plate is fixed, pulling the corrugated plate to form a point C with the edge of the long sealing plate by using a clamp, and then sequentially performing clockwise spot welding and fixing to complete circumferential spot welding and fixing of the corrugated plate;
s404, the step of fixing the spot welding of the other corrugated plate is repeated from S401 to S403.
Further, in step S6, the welding step of the corrugated plate includes:
s601, welding circumferential welding seams on the front surface formed by the corrugated plates;
s602, welding a welding seam on the reverse side formed by the corrugated plates;
s603, the turnover welding tool is turned over by 90 degrees, the end plate assemblies face downwards, welding seams are finished in a staggered mode, and the welding direction is from the center line to the two sides;
s604, turning the part for 180 degrees again, enabling the end plate assembly to be upward, and finishing welding seams among the corrugated plate assembly, the long sealing plate and the short sealing plate in a staggered mode from the middle to two sides;
s605, turning the parts to the reversed horizontal position to complete multilayer welding of the two side patch panels and the side beam, and polishing and cleaning after welding.
Further, in step S601, the welding step of the front weld seam formed by the corrugated plate includes:
s60101, firstly, welding corrugated plates to form a weld joint d at an overlap joint, wherein the welding direction is from two ends to the middle;
s60102, welding a corrugated plate assembly and a side beam assembly to form a lap joint welding seam e and a welding seam f, wherein the welding direction is from outside to inside in a segmented welding mode;
s60103, welding a welding seam g and a welding seam h between the corrugated plate and the long sealing plate, wherein the welding direction is from the center to two sides;
s60104, and finally welding a welding line i and a welding line j between the corrugated plate and the short sealing plate, wherein the welding direction is from the center to two sides.
Further, in step S602, the welding step of the welding seam on the reverse side of the corrugated plate includes:
s60201, hoisting the front end assembly into a turnover welding tool, arranging the components in a reversed horizontal position, and welding a back weld k at a lap joint part formed by the corrugated plates from outside to inside;
s60202, welding a back welding line l and a welding line m which are formed by the side beam and the corrugated plate from inside to outside;
and S60203, and finally welding a second layer of groove weld joints b between the corrugated plate assembly and the end plate assembly.
Further, in step S1, the end plate assembly is formed by welding an end plate and round steel.
Further, in step S1, the side rail assembly is formed by welding a roof panel and an outer side rail.
Further, in step S1, the corrugated plate assembly is formed by welding a corrugated plate and a patch plate.
In the technical scheme, the assembly welding process for the front end module of the underframe of the corrugated plate plug-in type box structure, provided by the invention, has the following beneficial effects:
the assembly welding process divides the problem of welding deformation of the plug-in type box type front end module, and disperses the welding heat input amount by assembling the end plate assembly, the side beam assembly and the corrugated plate assembly in a pre-modularization mode; the fan-shaped reversible deformation of 2 to 4mm is prefabricated by the corrugated plate composition, the problem of longitudinal deflection of the end plate is solved, and the machining quality is guaranteed.
The assembly welding process controls welding deformation in a mode of staggered welding from the middle to the two sides, finally gives consideration to the angle of the side patch plate and the integral flatness, and comprehensively solves the systematic problem of welding deformation.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a front side of a box-type frame main body structure processed by a corrugated plate plug-in type box-type structure underframe front end module welding process according to an embodiment of the present invention;
fig. 2 is a schematic structural view of the back surface of a box-type frame main body structure processed by a corrugated plate plug-in type box-type structure underframe front end module welding process according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of an end plate assembly welding process of a front end module of an underframe of a corrugated plate plug-in type box structure according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a side beam assembly of a corrugated plate plug-in type box-shaped chassis front end module assembly welding process according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a corrugated plate assembly welding process for a front module of an underframe of a corrugated plate plug-in type box structure according to an embodiment of the present invention;
fig. 6 is a first schematic diagram illustrating a welding position in step S3 of a front module assembly welding process of a chassis of a corrugated board plug-in box type structure according to an embodiment of the present invention;
fig. 7 is a second schematic diagram illustrating a welding position in step S3 of a front module assembly welding process of a chassis of a corrugated board plug-in box type structure according to an embodiment of the present invention;
fig. 8 is a schematic view illustrating a welding position in step S4 of a front module assembly welding process of a chassis of a corrugated plate plug-in box type structure according to an embodiment of the present invention;
fig. 9 is a schematic view of a welding position in step S601 of an assembly welding process of a front end module of an underframe of a corrugated plate plug-in box type structure according to an embodiment of the invention;
fig. 10 is a schematic diagram of a welding position in step S602 of an assembly welding process of a front module of an underframe of a corrugated plate plug-in box type structure according to an embodiment of the invention.
Description of reference numerals:
1. an end plate assembly; 2. a side beam assembly; 3. the corrugated plate is formed; 4. a long sealing plate; 5. a short seal plate; 6. side patching boards; 7. a sealing plate;
101. an end plate; 102. round steel;
201. a roof plate; 202. an outer side member;
301. a corrugated plate; 302. and (5) supplementing plates.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
See fig. 1-10;
the invention discloses an assembly welding process for a front-end module of an underframe of a corrugated plate plug-in type box structure, which mainly comprises the following steps of:
s1, modular assembly, wherein the modular assembly comprises assembly welding of an end plate assembly 1, assembly welding of a side beam assembly 2 and assembly welding of a corrugated plate assembly 3, and the assembly welding of the end plate assembly 1, the side beam assembly 2 and the corrugated plate assembly 3 are leveled and straightened respectively;
s2, forming a box-type frame main body structure, namely sequentially pairing a side beam assembly 2, a long sealing plate 4, a short sealing plate 5, an end plate assembly 1 and a side patch plate 6 to form the box-type frame main body structure, and compressing and fixing the box-type frame main body structure through a clamp in a spot welding manner;
s3, welding the box-type frame main body structure;
s4, paving the corrugated plate assembly 3 and the side patch plate 6, and fixing the corrugated plate assembly 3 by spot welding;
s5, paving the sealing plates 7, and welding and fixing the sealing plates 7 clockwise along the circumferential direction of the sealing plates 7, wherein the number of the sealing plates 7 is two;
s6, welding the corrugated plate assembly 3, and welding the corrugated plate assembly 3 after fixing the stay bars at the tail ends of the side beam assembly 2 through spot welding.
Specifically, the embodiment discloses a 100% low-floor plug-in type box type front end module assembly welding process, which comprises the steps of firstly modularizing a box type front end, and dividing the box type front end into an end plate assembly 1, a side beam assembly 2 and a corrugated plate assembly 3; the corrugated plate 3 is composed of two plates. By the mode, the welding deformation of the module can be divided, and the welding heat input quantity is effectively dispersed.
Preferably, in step S3 of the present embodiment, the welding procedure for the box-type frame main body structure is:
s301, firstly welding a vertical welding line a of the box type frame main body structure;
s302, performing first-layer welding of a groove welding seam b between the side beam assembly 2 and the end plate assembly 1;
s303, then alternately welding transverse welding seams c;
and S304, finally, completing the welding of the rest longitudinal welding seams.
Preferably, in step S4 of this embodiment, the step of laying and spot-welding the corrugated plate assembly 3 includes:
s401, fixing a single corrugated plate by diagonal spot welding, and firstly fixing a point A in a spot welding manner, wherein the point A is the center of a corrugated plate component 3 and a long sealing plate 4;
s402, fixing a point B at the joint of the diagonal corrugated plate component 3 and the short sealing plate 5 by spot welding;
s403, after the corrugated plate assembly 3 is fixed, pulling the corrugated plate assembly 3 and a point C on the edge of the long sealing plate 4 by using a clamp, and then sequentially performing clockwise spot welding and fixing to complete circumferential spot welding and fixing of the corrugated plate;
s404, the step of fixing the spot welding of the other corrugated plate is repeated from S401 to S403.
The fan-shaped reversible deformation of the corrugated plate assembly 3 with the difference value of the front end and the rear end of 2-4 mm is prefabricated by the method.
Preferably, in step S6 of this embodiment, the welding step of the corrugated plate assembly 3 is:
s601, welding circumferential welding seams on the front surface of the corrugated plate 3;
s602, welding a corrugated plate to form a welding seam on the reverse side of the corrugated plate 3;
s603, the turnover welding tool is turned over by 90 degrees, the end plate assemblies face downwards, welding seams are finished in a staggered mode, and the welding direction is from the center line to the two sides;
s604, turning the part for 180 degrees again, enabling the end plate assembly to be upward, and finishing welding seams among the corrugated plate assembly 3, the long sealing plate 4 and the short sealing plate 5 in a staggered mode from the middle to two sides;
s605, turning the parts to the reversed horizontal position, completing the multilayer welding of the two side patch panels 6 and the side beam assembly 2, and grinding and cleaning after welding.
In step S601, the welding step of the weld on the front surface of the corrugated plate assembly 3 is:
s60101, firstly, welding corrugated plates to form a weld joint d at the lap joint part 3, wherein the welding direction is from two ends to the middle;
s60102, welding a welding seam e and a welding seam f at the lap joint of the corrugated plate assembly 3 and the side beam assembly 2, wherein the welding direction is from outside to inside in a segmented welding mode;
s60103, welding a welding seam g and a welding seam h between the corrugated plate 3 and the long sealing plate 4, wherein the welding direction is from the center to two sides;
s60104 and finally welding a welding line i and a welding line j between the corrugated plate assembly 3 and the short sealing plate assembly 5, wherein the welding direction is from the center to two sides.
In step S602, the welding step of the welding seam on the reverse side of the corrugated plate assembly 3 is:
s60201, hoisting the front end assembly into a turnover welding tool, arranging the components in a reversed horizontal position, and welding a back weld k at the lap joint of the corrugated plate assembly 3 from outside to inside;
s60202, welding a back welding line l and a welding line m which are formed by the side beam and the corrugated plate from inside to outside;
and S60203, and finally welding a second layer of groove weld joints b between the corrugated plate assembly 3 and the end plate assembly 1.
Preferably, in step S1 of the present embodiment, the end plate assembly 1 is formed by welding the end plate 101 and the round bar 102.
In step S1, the side member assembly 2 is formed by welding the roof panel 201 and the outer side member 202.
In step S1, the corrugated plate assembly 3 is formed by welding the corrugated plate 301 and the patch plate 302.
In the technical scheme, the assembly welding process for the front end module of the underframe of the corrugated plate plug-in type box structure, provided by the invention, has the following beneficial effects:
the assembly welding process divides the problem of welding deformation of the plug-in type box type front end module, and disperses the welding heat input amount by assembling the end plate assembly 1, the side beam assembly 2 and the corrugated plate assembly 3 in a modularization way in advance; the corrugated plate assembly 3 is prefabricated with 2-4 mm fan-shaped reversible deformation, so that the problem of longitudinal deflection of the end plate is solved, and the machining quality is ensured.
The assembly welding process controls welding deformation in a mode of staggered welding from the middle to the two sides, finally gives consideration to the angle of the side patch plate and the integral flatness, and comprehensively solves the systematic problem of welding deformation.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (9)
1. The utility model provides an underframe front end module assembly welding technology of buckled plate plug-in type box structure which characterized in that, this assembly welding technology mainly includes following step:
s1, modular assembly, wherein the modular assembly comprises assembly welding of an end plate assembly (1), assembly welding of a side beam assembly (2) and assembly welding of a corrugated plate assembly (3), and the assembly welding of the end plate assembly (1), the side beam assembly (2) and the corrugated plate assembly (3) are leveled and straightened respectively;
s2, forming a box-type frame main body structure, namely assembling a side beam assembly (2), a long sealing plate (4), a short sealing plate (5), an end plate assembly (1) and a side supplementing plate (6) in sequence to form the box-type frame main body structure, and compressing and fixing the box-type frame main body structure through a clamp in a spot welding manner;
s3, welding the box-type frame main body structure;
s4, paving the corrugated plate assembly (3) and the side patch plate (6), and fixing the corrugated plate assembly (3) by spot welding;
s5, paving the sealing plates (7), and welding and fixing the sealing plates (7) clockwise along the circumferential direction of the sealing plates (7), wherein the number of the sealing plates (7) is two;
s6, welding the corrugated plate assembly (3), and welding the corrugated plate assembly (3) after fixing the stay bars at the tail end of the side beam assembly (2) by spot welding.
2. The assembly welding process of the front end module of the underframe of the corrugated plate plug-in type box-type structure as claimed in claim 1, wherein in the step S3, the welding sequence of the box-type frame main body structure is as follows:
s301, firstly welding a vertical welding line a of the box type frame main body structure;
s302, performing first-layer welding of a groove weld b between the side beam assembly (2) and the end plate assembly (1);
s303, then alternately welding transverse welding seams c;
and S304, finally, completing the welding of the rest longitudinal welding seams.
3. The assembly welding process of the front end module of the underframe of the corrugated plate plug-in type box structure as claimed in claim 1, wherein in the step S4, the step of paving and spot welding the corrugated plate assembly (3) comprises the following steps:
s401, fixing a single corrugated plate by diagonal spot welding, and firstly fixing a point A in a spot welding manner, wherein the point A is the center of a corrugated plate component (3) and a long sealing plate (4);
s402, fixing a point B at the joint of the diagonal corrugated plate assembly (3) and the short sealing plate (5) by spot welding;
s403, after the corrugated plate assembly (3) is fixed, pulling the corrugated plate assembly (3) and a point C at the edge of the long sealing plate (4) by using a clamp, and then sequentially performing clockwise spot welding and fixing to complete circumferential spot welding and fixing of the corrugated plate;
s404, the step of fixing the spot welding of the other corrugated plate is repeated from S401 to S403.
4. The assembly welding process of the front end module of the underframe of the corrugated plate plug-in type box structure as claimed in claim 1, wherein in the step S6, the welding step of the corrugated plate assembly (3) is:
s601, welding circumferential welding seams on the front surface of the corrugated plate assembly (3);
s602, welding a welding seam on the reverse side of the corrugated plate assembly (3);
s603, turning the turning welding tool by 90 degrees, enabling the end plate assembly (1) to face downwards, and completing welding seams in a staggered mode, wherein the welding direction is from the center line to two sides;
s604, turning the part for 180 degrees again, enabling the end plate assembly (1) to face upwards, and completing welding seams among the corrugated plate assembly (3), the long sealing plate (4) and the short sealing plate (5) in a staggered mode from the middle to two sides;
s605, turning the parts to the reversed horizontal position to complete multilayer welding of the two side patch panels (6) and the side beam assembly (2), and polishing and cleaning after welding.
5. The assembly welding process of the front end module of the underframe with the corrugated plate plug-in type box structure as claimed in claim 4, wherein in the step S601, the welding step of the front welding line of the corrugated plate assembly (3) is as follows:
s60101, firstly, welding a welding seam d at the lap joint part of a corrugated plate assembly (3), wherein the welding direction is from two ends to the middle;
s60102, welding a welding seam e and a welding seam f at the lap joint of the corrugated plate assembly (3) and the side beam assembly (2), and performing segmented welding in the welding direction from outside to inside;
s60103, welding a welding seam g and a welding seam h between the corrugated plate assembly (3) and the long sealing plate (4), wherein the welding direction is from the center to two sides;
s60104, and finally welding a welding line i and a welding line j between the corrugated plate assembly (3) and the short sealing plate (5), wherein the welding direction is from the center to two sides.
6. The assembly welding process of the front end module of the underframe with the corrugated plate plug-in type box structure as claimed in claim 4, wherein in the step S602, the welding seam on the reverse side of the corrugated plate assembly (3) comprises the following steps:
s60201, hoisting the front end assembly into a turnover welding tool, arranging the components in a reversed horizontal position, and welding a back weld k at the lap joint of the corrugated plate assembly (3) from outside to inside;
s60202, welding a back welding line l and a welding line m of the side beam assembly (2) and the corrugated plate assembly (3) from inside to outside;
and S60203, and finally welding a second layer of groove weld joints b between the corrugated plate assembly (3) and the end plate assembly (1).
7. The assembly welding process of the front end module of the underframe of the corrugated plate plug-in type box structure as claimed in claim 1, wherein in the step S1, the end plate assembly (1) is formed by welding an end plate (101) and round steel (102).
8. The assembly welding process of the front end module of the underframe of a corrugated plate plug-in type box structure as claimed in claim 1, wherein in the step S1, the side sill assembly (2) is formed by welding a roof plate (201) and an outer side sill (202).
9. The assembly welding process of the front module of the underframe of a corrugated plate plug-in type box structure as claimed in claim 1, wherein in the step S1, the corrugated plate assembly (3) is formed by welding a corrugated plate (301) and a patch plate (302).
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