CN111250912B - Welding control device and method for rail car body bottom plate - Google Patents
Welding control device and method for rail car body bottom plate Download PDFInfo
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- CN111250912B CN111250912B CN202010120851.5A CN202010120851A CN111250912B CN 111250912 B CN111250912 B CN 111250912B CN 202010120851 A CN202010120851 A CN 202010120851A CN 111250912 B CN111250912 B CN 111250912B
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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
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Abstract
The invention discloses a welding control device of a bottom plate of a rail vehicle body, which comprises a plurality of control modules for controlling the welding deformation of single-layer sectional materials, double-layer sectional materials and connecting plates in the bottom plate, wherein any control module comprises a supporting beam frame, and the supporting beam frame is provided with: a support assembly; a plurality of pressing devices for pressing the single-layer section bar or the double-layer section bar; a limiting component with adjustable thickness; when the single-side section bar and the double-side section bar are welded, the limiting assembly is used for transversely clamping the two section bars so as to generate preset deformation along the inner side direction between the single-side section bar and the double-side section bar. The invention also discloses a method of the welding control device applied to the rail car body bottom plate. The welding control device can effectively control the welding deformation between single and double-layer sectional materials due to the asymmetric structure, thereby improving the utilization rate and the production efficiency of the platform and further improving the bearing capacity and the service reliability of the whole vehicle body chassis.
Description
Technical Field
The invention relates to the technical field of rail vehicle manufacturing, in particular to a welding control device for a bottom plate of a rail vehicle body. The invention also relates to a method applied to the welding control device of the bottom plate of the rail car body.
Background
A bottom plate in a magnetic suspension train body is an important component of a chassis of a high-speed motor train unit and is a key part for bearing the chassis. The bottom plate is composed of single-layer sectional materials, double-layer sectional materials and plates, the single-layer sectional materials and the double-layer sectional materials are mainly connected in an MIG automatic welding mode, double-side welding forming is carried out between the single-layer sectional materials and the double-layer sectional materials, due to the fact that structures of the front side and the back side are different, welding of the front side and the back side needs to be completed on different supporting tools, due to the fact that the structure is asymmetric, welding deformation is prone to occurring in the welding process, due to the characteristics of a welding process, bending deformation and wave deformation are prone to occurring after the welding of the single-layer and double-layer sectional materials of the bottom plate, the installation of equipment is affected, stress is uneven in the service operation process of a vehicle body, and therefore potential safety hazards are brought to the service operation of the vehicle body. The welding deformation is caused by the fact that the welding process has the characteristic of a local thermal process and tensile plastic deformation occurs in the cooling process of a welding line area, the welding line of the single-layer and double-layer sectional material of the bottom plate is in a flat welding line form, bending deformation and wave deformation can occur after welding is completed, and appropriate process measures are adopted, so that the welding deformation can be effectively reduced or even eliminated.
Therefore, how to avoid the easy occurrence of welding deformation during the welding process of the bottom plate composition structure in the magnetic levitation train body is a technical problem to be solved by those skilled in the art at present.
Disclosure of Invention
The invention aims to provide a welding control device for a bottom plate of a rail car body, which can effectively reduce the welding deformation of single-layer and double-layer sectional materials of the bottom plate and further improve the bearing capacity and service reliability of the whole car body chassis. Another object of the present invention is to provide a method of applying the welding control apparatus to the floor of the rail car body.
In order to achieve the above object, the present invention provides a welding control device for a bottom plate of a rail car body, comprising a plurality of control modules for controlling welding deformation of a single-layer profile, a double-layer profile and a connecting plate in the bottom plate, wherein any one of the control modules comprises a support beam frame, and the support beam frame is provided with:
a support assembly;
a plurality of pressing devices for pressing the single-layer section bar or the double-layer section bar;
a limiting component with adjustable thickness;
when the single-side section bar and the double-layer section bar are welded, the limiting assembly is used for transversely clamping the single-side section bar and the double-layer section bar so as to enable the single-side section bar and the double-layer section bar to generate preset deformation along the inner side direction.
Optionally, the support assembly comprises:
the lower supporting plate is fixedly arranged on the supporting beam frame;
the upper supporting plates are detachably connected to the lower supporting plate and used for making up the height difference of the front surfaces of the single-layer sectional material and the double-layer sectional material.
Optionally, any of the said impactor comprises:
the support is fixedly connected to the supporting beam frame;
the adjusting rod is arranged along the horizontal direction and is in sliding connection with the support;
the connecting rod is vertically arranged and is connected with one end of the adjusting rod;
and the pressure plate is arranged at the lower end of the connecting rod and is used for being contacted and abutted with the single-layer section bar or the double-layer section bar.
Optionally, the limiting assembly comprises two limiting blocks respectively arranged at two sides of the supporting assembly; the inner side of any one of the limiting blocks is provided with a plurality of anti-deformation cushion blocks used for adjusting the deformation of the single-layer section bar and the double-layer section bar.
Optionally, the welding fixture further comprises two limiting ends for limiting the welding front end parts of the single-layer profile, the double-layer profile and the connecting plate.
Optionally, the limit end on the first side of all the control modules is a fixed limit end, and the limit end on the second side of all the control modules is a movable limit end.
The invention also provides a welding control method of the rail car body bottom plate, which is applied to any one welding control device of the rail car body bottom plate, and comprises the following steps:
positioning the single-layer profile and the double-layer profile on the single side through a control module and welding the front sides of the single-layer profile and the double-layer profile;
positioning single-layer and double-layer sectional materials on two sides and connecting plates through the control module, and welding the single-layer and double-layer sectional materials on the two sides and the front sides of the connecting plates;
positioning single-layer and double-layer sectional materials at two sides and connecting plates through the control module, and welding the single-layer sectional material at one side and the reverse side of the double-layer sectional material;
the single-layer and double-layer sectional materials on the two sides and the connecting plate are positioned through the control module, and the back surfaces of the single-layer and double-layer sectional materials on the two sides and the connecting plate are welded.
Optionally, the step of positioning the single-sided single-layer profile and the double-layer profile by the control module and welding the front sides of the single-layer profile and the double-layer profile comprises:
supporting the single-layer section bar and the double-layer section bar through a lower supporting plate;
clamping the single-layer section bar and the double-layer section bar through a first preset number of anti-deformation cushion blocks;
pressing the single-layer section bar and the double-layer section bar downwards through a pressing device;
and welding the front surfaces of the single-layer section bar and the double-layer section bar.
Optionally, the step of positioning the single-layer or double-layer profiles on the two sides and the connecting plate by the control module and welding the front sides of the single-layer or double-layer profiles on the two sides and the connecting plate comprises:
the single-layer and double-layer sectional materials and the connecting plate on two sides are supported by the lower supporting plate;
clamping the single-layer and double-layer sectional materials on two sides through a second preset number of the anti-deformation cushion blocks;
pressing the single-layer section downwards through the pressing device;
and welding the single-layer and double-layer section bars on the two sides and the front surface of the connecting plate.
Optionally, the step of positioning the single-layer profile and the double-layer profile on two sides and connecting the plates through the control module and welding the reverse sides of the single-layer profile and the double-layer profile on one side includes:
installing an upper supporting plate on the lower supporting plate and supporting single-layer and double-layer sectional materials and connecting plate materials on two sides through the upper supporting plate;
clamping the single-layer and double-layer sectional materials on two sides through the anti-deformation cushion block;
pressing the single-layer section downwards through the pressing device;
and welding the back surfaces of the single-side single-layer section bar and the double-layer section bar.
Compared with the prior art, the invention designs a welding control device of a rail car body bottom plate aiming at different requirements of welding deformation control of single-layer and double-layer sectional materials of the car body bottom plate, and particularly, the welding control device of the rail car body bottom plate comprises a plurality of control modules for controlling the welding deformation of the single-layer sectional materials, the double-layer sectional materials and connecting plates in the bottom plate, wherein any control module comprises a supporting beam frame, a supporting assembly, a pressing device and a limiting assembly, and the supporting assembly, the pressing device and the limiting assembly are all arranged on the supporting beam frame; when the welding, supporting component is used for supporting individual layer section bar, double-deck section bar and connecting plate material, and a plurality of collet is used for compressing tightly individual layer section bar or double-deck section bar downwards, and spacing subassembly specifically is the spacing subassembly of adjustable thickness to when the individual layer section bar of welding unilateral and double-deck section bar, spacing subassembly is used for along horizontal centre gripping individual layer section bar and double-deck section bar, so that produce between individual layer section bar and the double-deck section bar along the default deformation of inboard direction. Meanwhile, the invention also provides a welding control method of the rail car body bottom plate, which is applied to the welding control device of the rail car body bottom plate and comprises the following steps:
s1: positioning the single-layer profile and the double-layer profile on the single side through a control module and welding the front sides of the single-layer profile and the double-layer profile;
s2: positioning single-layer and double-layer sectional materials on two sides and connecting plates through a control module and welding the single-layer and double-layer sectional materials on the two sides and the front sides of the connecting plates;
s3: positioning single-layer and double-layer sectional materials at two sides and connecting plates through a control module, and welding the single-layer sectional material at one side and the reverse side of the double-layer sectional material;
s4: the single-layer and double-layer sectional materials on the two sides and the connecting plate are positioned through the control module, and the back surfaces of the single-layer and double-layer sectional materials on the two sides and the connecting plate are welded.
Therefore, the welding control device of the rail car body bottom plate realizes preset transverse limiting through the limiting assembly on the basis that the vertical limiting is realized through the pressing device and the supporting assembly, so as to form a rigid constraint effect; specifically, when the front of the single-side section bar is welded, the single-side section bar and the double-side section bar are transversely clamped by the limiting assembly, so that preset deformation along the inner side direction is generated between the single-side section bar and the double-side section bar, after welding is completed, rigid constraint is removed, bending deformation is generated due to the action of welding residual stress on two sides of a welding seam of the section bars, the bending deformation offsets with the preset deformation before welding, and therefore the generation of the bending deformation can be controlled, and meanwhile, the purpose of controlling the wave deformation of the section bars after welding can be achieved through the rigid fixing action of the welding control device; when the profiles on the two sides and the front surface of the connecting plate are welded, the profiles on the two sides are abutted against the limiting assembly by adjusting the pressing position of the pressing device and the thickness of the limiting assembly, and the rigid constraint effect of welding the profiles and the connecting plate is formed, so that the purpose of controlling the angular deformation of the profiles and the connecting plate after welding is achieved; of course, when the reverse side of the single-side profile is welded, the rigid constraint formed by the supporting beam frame, the supporting assembly, the pressing device and the limiting assembly can achieve the purpose of controlling the wave deformation of the profile after welding. The welding control device and the welding control method are simple and effective, the front welding and the back welding between the single-layer sectional material and the double-layer sectional material can be completed on the same station through the rigid limit of the supporting beam frame, the supporting assembly, the pressing device and the limiting assembly, and the welding deformation between the single-layer sectional material and the double-layer sectional material due to the asymmetrical structure can be effectively controlled, so that the station utilization rate and the production efficiency can be improved, and the bearing capacity and the service reliability of the whole vehicle body underframe can be further improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic overall structure diagram of a welding control device for a rail car body bottom plate according to an embodiment of the invention;
FIG. 2 is a schematic view of a front side weld between single and double layer profiles on a single side;
FIG. 3 is a front welding schematic view of single-layer and double-layer sectional materials on two sides and a middle connecting plate;
FIG. 4 is a schematic view of a back side weld of a base plate;
fig. 5 is a flowchart of a welding control method for a rail car body floor according to an embodiment of the present invention.
Wherein:
1-control module, 2-fixed limit end, 3-movable limit end, 11-support beam frame, 12-lower support plate, 13-upper support plate, 14-compactor and 15-limit component.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The core of the invention is to provide a welding control device for a bottom plate of a rail vehicle body, which can effectively reduce the welding deformation of single and double-layer sectional materials of the bottom plate and further improve the bearing capacity and service reliability of the whole vehicle body chassis. The invention also provides a method applied to the welding control device of the rail car body bottom plate.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
It should be noted that the following directional terms such as "upper end, lower end, left side, right side" and the like are defined based on the drawings of the specification.
Referring to fig. 1 to 5, fig. 1 is a schematic overall structure diagram of a welding control device for a bottom plate of a rail car body according to an embodiment of the present invention; FIG. 2 is a schematic view of a front side weld between single and double layer profiles on a single side; FIG. 3 is a front welding schematic view of single-layer and double-layer sectional materials on two sides and a middle connecting plate; FIG. 4 is a schematic view of a back side weld of a base plate; fig. 5 is a flowchart of a welding control method for a rail car body floor according to an embodiment of the present invention.
The welding control device for the bottom plate of the rail car body comprises a plurality of control modules 1 used for controlling welding deformation of single-layer sectional materials, double-layer sectional materials and connecting plates in the bottom plate, as shown in fig. 1, the number of the control modules 1 can be adjusted according to actual welding requirements, for example, the control modules 1 can be set into 13 groups, any two groups of adjacent control modules 1 are arranged at preset intervals, and all the control modules 1 are fixedly connected to brackets on two sides. Specifically, any control module 1 comprises a supporting beam frame 11, a supporting assembly, a pressing device 14 and a limiting assembly 15, wherein the supporting assembly, the pressing device 14 and the limiting assembly 15 are all arranged on the supporting beam frame 11; during welding, the supporting component is used for supporting single-layer sectional materials, double-layer sectional materials and connecting plate materials, the plurality of pressing devices 14 are used for pressing the single-layer sectional materials or the double-layer sectional materials downwards, the limiting component 15 is specifically the limiting component 15 with adjustable thickness, and when the single-layer sectional materials and the double-layer sectional materials on one side are welded, the limiting component 15 is used for transversely clamping the single-layer sectional materials and the double-layer sectional materials, so that preset deformation along the inner side direction is generated between the single-layer sectional materials and the double-layer sectional materials.
It should be noted that the vehicle body floor includes a connecting plate located in the middle and two sets of single-layer and double-layer profiles located on two sides of the connecting plate, respectively, wherein the single-layer profile on any side is located between the double-layer profile and the connecting plate.
Of course, according to actual needs, the supporting beam frame 11 may be specifically configured to include two supporting legs respectively disposed on the two supports and a cross beam connected to the two supporting legs, wherein both the two supporting legs are vertically disposed, and the cross beam is horizontally disposed; the supporting component can be specifically provided with a first supporting piece fixedly connected to the cross beam and a second supporting piece detachably connected to the first supporting piece, so that the welding stability of the single-double-layer section bar can be ensured by dismounting the second supporting piece during welding; for example, when the front side is welded, the back side of the bottom plate faces downward and contacts with the welding control device, the second supporting piece needs to be detached as the back sides of the single-layer profile and the double-layer profile of the bottom plate and the connecting plate are horizontal, and only the profile and the connecting plate need to be installed on the first supporting piece. Of course, both the first support and the second support may be provided as plate-shaped supports.
The effect of compactor 14 can compress tightly the work piece downwards when the work piece is installed on supporting component to form along vertical constraint effect to the work piece, this compactor 14 specifically can set up to can following lateral shifting, in order to realize carrying out the effect of compressing tightly of different positions to the work piece according to the welding needs of difference, for example can set up to fixing base and slide bar, slide bar and fixing base sliding connection are equipped with discoid compressing tightly the piece on the slide bar. Of course, according to actual limit requirements, two first compactors can be arranged in the middle of the supporting beam frame 11, the first compactors can compress single-layer profiles downwards, two second compactors can be arranged on two sides of the two first compactors respectively, and the second compactors can compress double-layer profiles downwards.
In addition, the limiting component 15 mainly comprises two limiting seats or limiting blocks and a reversible deformation cushion block or a reversible deformation gasket arranged on the inner side of the limiting blocks; the two limiting blocks are respectively positioned on two sides of the supporting component, the inner side of any limiting block is provided with a preset number of anti-deformation cushion blocks, and the anti-deformation cushion blocks are used for transversely pressing the section bar of the bottom plate so as to adjust the deformation of the single-layer section bar and the double-layer section bar of the bottom plate. For example, the limiting blocks can be specifically set to be L-shaped limiting blocks, the two L-shaped limiting blocks are oppositely arranged, and the number of the anti-deformation cushion blocks on the inner sides of the L-shaped limiting blocks can be adjusted according to actual welding requirements.
Therefore, the welding control device of the rail car body bottom plate realizes preset transverse limiting through the limiting assembly 15 on the basis that the vertical limiting is realized through the pressing device 14 and the supporting assembly, so as to form a rigid constraint effect; specifically, when the front of the single-side section bar is welded, the single-side section bar and the double-side section bar are transversely clamped by the limiting assembly 15, so that preset deformation along the inner side direction is generated between the single-side section bar and the double-side section bar, after welding is completed, rigid constraint is removed, bending deformation is generated due to the fact that two sides of a welding seam of the section bars are subjected to welding residual stress, the bending deformation offsets with the preset deformation before welding, therefore, the generation of the bending deformation can be controlled, and meanwhile, the purpose of controlling wave deformation of the section bars after welding can be achieved through the rigid fixing effect of the welding control device; when the profiles on the two sides and the front surface of the connecting plate are welded, the profiles on the two sides abut against the limiting assembly 15 by adjusting the pressing position of the pressing device 14 and the thickness of the limiting assembly 15, and the rigid constraint effect of welding the profiles and the connecting plate is formed, so that the purpose of controlling the angular deformation of the welded profiles and the connecting plate is achieved. Of course, when the reverse side of the single-sided profile is welded, the rigid constraint formed by the supporting beam frame 11, the supporting assembly, the pressing device 14 and the limiting assembly 15 can achieve the purpose of controlling the wave deformation of the profile after welding.
The welding control device and the welding control method are simple and effective, the front welding and the back welding between the single-layer sectional material and the double-layer sectional material can be completed on the same station through the rigid limit of the supporting beam frame 11, the supporting assembly, the pressing device 14 and the limiting assembly 15, and the welding deformation between the single-layer sectional material and the double-layer sectional material due to the asymmetrical structure can be effectively controlled, so that the station utilization rate and the production efficiency can be improved, and the bearing capacity and the service reliability of the whole vehicle body underframe can be further improved.
More specifically, the above-mentioned support assembly may be configured to include a lower support plate 12 (first support member) and a plurality of upper support plates 13 (second support member), wherein the lower support plate 12 is fixedly mounted on the support beam frame 11, and the plurality of upper support plates 13 are detachably connected to the lower support plate 12, so as to compensate the height difference between the front surfaces of the single-layer profile and the double-layer profile when the back surface is welded.
Any presser 14 can be provided to comprise a support, an adjusting rod, a connecting rod and a pressure plate, wherein the support is fixedly connected to the supporting beam frame 11 to realize a supporting function; the adjusting rod is arranged along the horizontal direction and is in sliding connection with the support, and the adjusting rod can slide relative to the support along the horizontal direction, so that the limiting of different positions on the surface of the sectional material can be realized; the connecting rod is vertically arranged and connected with one end of the adjusting rod, and the connecting rod can be sleeved at one end of the adjusting rod; the lower extreme of connecting rod is located to the pressure disk, and the pressure disk is used for contacting with single-layer section bar or double-layer section bar and offsets in order to realize compressing tightly the effect, and of course, the pressure disk can set up the circular pressure disk of rubber material.
In order to optimize the above embodiment, the welding control device further includes two limiting ends respectively used for limiting the welding front end of the single-layer profile, the double-layer profile and the connecting plate. Specifically, one of the limiting ends is a fixed limiting end 2, and the other limiting end is a movable limiting end 3, for example, the fixed limiting end 2 may be disposed on a first side (left side) of the entire control module 1, and the movable limiting end 3 may be disposed on a second side (right side) of the entire control module 1. The arrangement mode can realize the limitation of the two ends of the bottom plate according to the length of the bottom plate. The limiting end can be arranged according to the prior art, for example, the limiting end can be arranged in a structure similar to a clamp.
Meanwhile, the invention also provides a welding control method of the rail car body bottom plate, which is applied to the welding control device of the rail car body bottom plate, and the welding control method specifically controls welding deformation by optimizing a welding sequence, namely the welding sequence is adjusted from welding a long straight welding seam, connecting plates into front welding between two profiles on one side, front welding between the profiles on two sides and connecting plates, back welding between the profiles on one side and connecting plates, and back welding between the profiles on two sides and connecting plates, and specifically comprises the following steps:
s1: positioning the single-layer profile and the double-layer profile on one side through the control module 1 and welding the front sides of the single-layer profile and the double-layer profile;
s2: positioning single-layer and double-layer sectional materials on two sides and connecting plates through a control module 1 and welding the single-layer and double-layer sectional materials on the two sides and the front sides of the connecting plates;
s3: positioning single-layer and double-layer sectional materials at two sides and connecting plates through a control module 1, and welding the single-layer sectional material at one side and the reverse side of the double-layer sectional material;
s4: the single-layer and double-layer sectional materials on the two sides and the connecting plate are positioned through the control module 1, and the back surfaces of the single-layer and double-layer sectional materials on the two sides and the connecting plate are welded.
Of course, before welding, the end limiting of the workpiece is realized through the fixed limiting end 2 and the movable limiting end 3.
The step of S1 may specifically be configured to include: the first step is as follows: the single-layer section bar and the double-layer section bar are supported by the lower supporting plate 12; the second step is that: clamping the single-layer section bar and the double-layer section bar through a first preset number of anti-deformation cushion blocks; the third step: the single-layer section bar and the double-layer section bar are pressed downwards by a pressing device 14; the fourth step: and welding the front surfaces of the single-layer section bar and the double-layer section bar.
Specifically, in S1, when the front side of the single-sided profile is welded, the back side of the bottom plate is downward and contacts with the tool, because the reverse sides of the single-layer section bar and the double-layer section bar of the workpiece are horizontal planes, the upper supporting plate 13 at the contact position of the double-layer section bar needs to be removed, after the single-side section bar is assembled before welding, a first preset number of anti-deformation cushion blocks are arranged on the inner side of the limiting block to enable the end parts to generate inward preset deformation between the profiles, meanwhile, the first pressing device in the middle and the second pressing devices on two sides are used for pressing the section together to form the rigid constraint effect, after the welding is finished, the welding control device is removed, because the two sides of the welding seam of the section bar are subjected to the action of welding residual stress to generate bending deformation, the bending deformation is counteracted with the inward pre-deformation of the end part direction preset before welding, thus controlling the generation of the bending deformation, meanwhile, the purpose of controlling the wave deformation of the welded section can be achieved through the rigid fixing action of the welding control device.
The step of S2 may specifically be configured to include: the first step is as follows: the single-layer and double-layer section bars and the connecting plate at two sides are supported by a lower supporting plate 12; the second step is that: clamping the single-layer and double-layer sectional materials on two sides through a second preset number of anti-deformation cushion blocks; the third step: pressing the single-layer profile downwards by a presser 14; the fourth step: and welding the single-layer and double-layer section bars on the two sides and the front surface of the connecting plate.
Specifically, in S2, that is, when the profiles on the two sides are welded to the front of the connecting plate, since the back surfaces of the bottom plate profile and the connecting plate are horizontal, the upper support plate 13 needs to be removed, the first pressing device and the anti-deformation pad in the middle are adjusted to make the profiles abut against the anti-deformation pads on the two sides, the pressing positions of the second pressing devices on the two sides are adjusted and pressed to form the rigid constraint effect of the welding of the profiles and the connecting plate, and then the welding is performed, so as to achieve the purpose of controlling the angular deformation of the welded profiles and the connecting plate.
The step of S3 may specifically be configured to include: the first step is as follows: installing an upper supporting plate 13 on a lower supporting plate 12 and supporting single-layer and double-layer sectional materials and connecting plate materials on two sides through the upper supporting plate 13; the second step is that: clamping the single-layer and double-layer sectional materials on two sides through the anti-deformation cushion block; the third step: pressing the single-layer profile downwards by a presser 14; the fourth step: and welding the back surfaces of the single-side single-layer section bar and the double-layer section bar.
In S3, namely when the back side of the single-side section is welded, the front side of the bottom plate is downward and is contacted with a welding control device, and because the height difference exists between the front sides of the single-layer section and the double-layer section of the workpiece, an upper supporting plate 13 needs to be installed and restored to form the rigid constraint effect, and then welding is carried out, so that the purpose of controlling the wave deformation of the section after welding is realized; in S4, when the two side profiles are welded to the opposite sides of the connecting plate, the pressing positions of the two side second pressers 14 are adjusted again, pressed, and welded.
Of course, according to actual needs, on the basis of the welding control method for presetting deformation before welding and optimizing welding sequence, a post-welding flame straightening method can be provided, wherein the post-welding flame straightening method is to heat a single-layer profile and a double-layer profile of a vehicle body bottom plate along the length direction of a welding seam by using a flame gun after the welding of the single-layer profile and the double-layer profile of the vehicle body bottom plate is finished so as to form a temperature field symmetrical to the welding temperature field, and the temperature of flame heating can be set to be 200 ℃. Therefore, the welding deformation of the single-layer and double-layer sectional materials of the bottom plate can be further reduced through the technical means, so that the bearing capacity and the service reliability of the whole vehicle body underframe can be further enhanced.
It is noted that, in this specification, relational terms such as first and second, and the like are used solely to distinguish one entity from another entity without necessarily requiring or implying any actual such relationship or order between such entities.
The welding control device and method for the bottom plate of the rail car body provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a welding control device of track automobile body bottom plate, its characterized in that includes control module (1) that single-layer section bar, double-layer section bar and the welding deformation of connecting panel in a plurality of is used for controlling the bottom plate, arbitrary control module (1) is including support roof beam structure (11), be equipped with on support roof beam structure (11):
a support assembly;
a plurality of pressing devices (14) for pressing the single-layer section bar or the double-layer section bar;
a limiting component (15) with adjustable thickness;
when a single-side single-layer profile and a double-layer profile are welded, the limiting assembly (15) is used for clamping the single-layer profile and the double-layer profile along the transverse direction so as to generate preset deformation between the single-layer profile and the double-layer profile along the inner side direction;
the support assembly includes:
a lower supporting plate (12) fixedly mounted on the supporting beam frame (11);
a plurality of upper supporting plates (13) which are detachably connected to the lower supporting plate (12) and are used for making up the height difference of the front surfaces of the single-layer section bar and the double-layer section bar;
any of the crimpers (14) includes:
a support fixedly connected to the supporting beam frame (11);
the adjusting rod is arranged along the horizontal direction and is in sliding connection with the support;
the connecting rod is vertically arranged and is connected with one end of the adjusting rod;
the pressing disc is arranged at the lower end of the connecting rod and is used for being contacted and abutted with the single-layer section bar or the double-layer section bar;
the limiting assembly (15) comprises two limiting blocks which are respectively arranged on two sides of the supporting assembly; the inner side of any one of the limiting blocks is provided with a plurality of anti-deformation cushion blocks used for adjusting the deformation of the single-layer section bar and the double-layer section bar.
2. The welding control device of the rail car body bottom plate according to claim 1, further comprising two limiting ends for limiting the welding front end parts of the single-layer section bar, the double-layer section bar and the connecting plate.
3. The welding control device of rail car body floor according to claim 2, characterized in that the limit ends of the first sides of all the control modules (1) are fixed limit ends (2) and the limit ends of the second sides of all the control modules (1) are movable limit ends (3).
4. A welding control method for a rail car body floor, characterized in that the welding control device applied to any one of the above 1-3, comprises:
positioning the single-layer sectional material and the double-layer sectional material on the single side through the control module (1) and welding the front sides of the single-layer sectional material and the double-layer sectional material;
positioning single-layer and double-layer sectional materials at two sides and connecting plates through the control module (1) and welding the single-layer and double-layer sectional materials at two sides and the front sides of the connecting plates;
positioning single-layer and double-layer sectional materials at two sides and connecting plates through the control module (1), and welding the single-layer sectional material at one side and the reverse side of the double-layer sectional material;
the single-layer and double-layer sectional materials on two sides and the connecting plate are positioned through the control module (1), and the reverse sides of the single-layer and double-layer sectional materials on two sides and the connecting plate are welded.
5. The welding control method of the rail car body floor according to claim 4, wherein the step of positioning the single-sided single-layer profile and the double-layer profile and welding the front surfaces of the single-layer profile and the double-layer profile by the control module (1) comprises:
the single-layer section bar and the double-layer section bar are supported by a lower layer support plate (12);
clamping the single-layer section bar and the double-layer section bar through a first preset number of anti-deformation cushion blocks;
pressing the single-layer section bar and the double-layer section bar downwards through a pressing device (14);
and welding the front surfaces of the single-layer section bar and the double-layer section bar.
6. The welding control method of rail car body floor according to claim 5, wherein said step of positioning and welding the front sides of the two side single and double layer profiles and the connection plate by said control module (1) comprises:
the single-layer and double-layer sectional materials and the connecting plate at two sides are supported by the lower supporting plate (12);
clamping the single-layer and double-layer sectional materials on two sides through a second preset number of the anti-deformation cushion blocks;
pressing the single-layer profile downwards through the pressing device (14);
and welding the single-layer and double-layer section bars on the two sides and the front surface of the connecting plate.
7. The welding control method of the rail car body floor as claimed in claim 6, wherein the step of positioning the two-sided single-and double-layer profiles and the connecting plate by the control module (1) and welding the single-sided single-layer profile and the reverse side of the double-layer profile comprises:
installing an upper layer support plate (13) on the lower layer support plate (12) and supporting single-layer and double-layer sectional materials and connecting plate materials on two sides through the upper layer support plate (13);
clamping the single-layer and double-layer sectional materials on two sides through the anti-deformation cushion block;
pressing the single-layer profile downwards through the pressing device (14);
and welding the back surfaces of the single-side single-layer section bar and the double-layer section bar.
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