CN110588693A - Railway vehicle sleeper beam, underframe and underframe welding method - Google Patents
Railway vehicle sleeper beam, underframe and underframe welding method Download PDFInfo
- Publication number
- CN110588693A CN110588693A CN201910949278.6A CN201910949278A CN110588693A CN 110588693 A CN110588693 A CN 110588693A CN 201910949278 A CN201910949278 A CN 201910949278A CN 110588693 A CN110588693 A CN 110588693A
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- CN
- China
- Prior art keywords
- sleeper beam
- main body
- beam main
- welding
- underframe
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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
- 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
- B23K37/047—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups for holding or positioning work moving work to adjust its position between soldering, welding or cutting steps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F1/00—Underframes
- B61F1/08—Details
Abstract
The invention discloses a railway vehicle sleeper beam, an underframe and an underframe welding method, wherein the railway vehicle sleeper beam comprises a sleeper beam main body, end cover plates and floor connecting profiles welded on the longitudinal two sides of the sleeper beam main body; the outer sides of the floor connecting profiles at the two longitudinal ends of the sleeper beam main body are respectively welded with floors, and the top surface of the sleeper beam main body is flush with the top surface of the floors; the two sides of the top surface of the sleeper beam main body are provided with process notches; the inner side rib plate of the sleeper beam main body is welded with the inner side of the underframe boundary beam through a vertical welding seam therebetween, the end cover plate covers a process gap, the periphery of the end cover plate is welded with the sleeper beam main body, the top surface of the sleeper beam main body is welded with the underframe boundary beam through a longitudinal welding seam therebetween, the outer side rib plate of the sleeper beam main body is welded with the underframe boundary beam through a vertical welding seam therebetween, and the bottom surface of the sleeper beam main body is welded with the underframe boundary beam through a longitudinal welding seam therebetween. The process notch is formed in the top face of the sleeper beam main body, the floor is arranged in a blocking mode, welding seams between the sleeper beam and the floor are prevented from being concentrated on one side, and welding deformation is reduced.
Description
Technical Field
The invention relates to the technical field of underframe of rail transit vehicles, in particular to a sleeper beam and underframe made of aluminum alloy for a rail vehicle and a welding method of the underframe.
Background
The sleeper beam is a main stressed part of the chassis structure of the vehicle body, plays a role in connecting the bogie and transmitting longitudinal compression force and traction force, and is a key power transmission structure for realizing safe running of the vehicle.
At present, when a sleeper beam is connected with a floor of an underframe, the upper plane of the sleeper beam is directly contacted and installed with the lower surface of a full-length floor. The connection between the sleeper beam and the side beam of the underframe is realized through the vertical welding seam of the inner side plane of the sleeper beam and the side beam of the underframe, the welding seam longitudinally connected along the car body is connected with the longitudinal welding seam of the side beam of the underframe through the lower plane of the sleeper beam, and the lower plane of the sleeper beam and the longitudinal welding seam of the side beam of the underframe can only realize partial connection. By adopting the structure form of the full-length floor, the welding seams between the sleeper beam and the underframe floor are concentrated on one side, so that the welding deformation is easily caused. In addition, the process notch is usually arranged on the lower plane of the sleeper beam, and after the cover plate and the sleeper beam are welded, the welding seam concentrated on the lower plane is processed to be smooth, so that the whole machining of the underframe of the car body is needed, the working time of occupying a large platform position of the underframe is long, and more manpower is consumed.
Therefore, how to improve the connection strength between the sleeper beam and the underframe, reduce the welding deformation of the key structure of the sleeper beam, and avoid the problem that the whole machining of the lower plane of the sleeper beam on a large platform occupies more man hours is a technical problem to be solved urgently by the technical staff in the field.
Disclosure of Invention
In view of the above, the first object of the present invention is to provide a railway vehicle sleeper beam, wherein the process gap is arranged on the top surface of the railway vehicle sleeper beam, so as to avoid occupying a large working position time for the integral machining of the vehicle body underframe due to the flattening of the weld joint after the cover plate and the railway vehicle sleeper beam are welded; meanwhile, the flatness of the bottom surface of the sleeper beam of the railway vehicle is controlled.
A second object of the invention is to provide a chassis.
A third object of the present invention is to provide a chassis welding method.
In order to achieve the first object, the present invention provides the following solutions:
a railway vehicle sleeper beam comprises a sleeper beam main body, end cover plates and floor connecting profiles welded on the two longitudinal sides of the sleeper beam main body;
longitudinal welding seams at two ends of the top surface of the sleeper beam main body and longitudinal welding seams at two ends of the bottom surface of the sleeper beam main body are respectively welded with the longitudinal welding seams of the side beams of the underframe;
the sleeper beam main body and the underframe boundary beam are vertically welded with the inner side of the underframe boundary beam through a vertical rib plate on the sleeper beam main body;
the inner side of the floor connecting section is welded with the sleeper beam main body, the outer side of the floor connecting section is welded with the underframe floor, and the top surface of the sleeper beam main body is flush with the top surface of the underframe floor;
the two ends of the top surface of the sleeper beam main body are provided with process notches, and the end cover plate is plugged on the process notches.
In a particular embodiment, the bolster body includes a first side bolster, a second side bolster, and a middle bolster;
the first side bolster and the second side bolster are welded to the longitudinal two sides of the middle bolster respectively.
In another specific embodiment, the rail vehicle bolster further comprises an anti-roll structure;
the anti-rolling structure comprises an anti-rolling mounting seat and a positioning thread block;
the bottom surface of the first side sleeper beam is provided with an installation notch, the anti-rolling installation seat is welded in the installation notch, and the top surface of the anti-rolling installation seat is flush with the bottom surface of the sleeper beam main body;
the positioning thread block can be inserted in the anti-rolling mounting seat in a sliding mode, a threaded hole is formed in the positioning thread block, a through hole coaxial with the threaded hole is formed in the anti-rolling mounting seat, a bolt can penetrate through the through hole to be connected with the threaded hole, and the anti-rolling torsion bar mounting seat is mounted on the anti-rolling mounting seat.
In another specific embodiment, the positioning thread block is a T-shaped block, and the head of the T-shaped block is clamped on the top surface of the anti-rolling mounting seat.
In another specific embodiment, the anti-rolling installation seat is of a square box type hollow structure, a first welding groove which is inclined inwards is arranged in the circumferential direction of the anti-rolling installation seat, and the first welding groove is welded on the installation notch and the outer vertical rib plate of the sleeper beam main body;
and second welding grooves are formed in the circumferential direction of the process notches at the two ends of the sleeper beam main body and are used for welding with the end cover plates. In another embodiment, the bottom surface of the body of the bolster is flush with the bottom surface of the undercarriage curb girder.
The various embodiments according to the invention can be combined as desired, and the embodiments obtained after these combinations are also within the scope of the invention and are part of the specific embodiments of the invention.
Without being limited to any theory, the railway vehicle sleeper beam disclosed by the invention has the advantages that the process notch is formed in the top surface of the sleeper beam main body, so that the problems of concentrated welding seams and poor flatness of the plane caused by the process notch arranged on the lower plane of the railway vehicle sleeper beam and blockage of the process notch are solved. In addition, the chassis floor passes through the floor and connects the section bar welding in the both sides of sleeper beam main part, and the top surface on sleeper beam main part and the top surface parallel and level on chassis floor, is about to chassis floor blocking setting, and the long structure is led to the non-, has avoided rail vehicle sleeper beam and chassis floor's welding seam to concentrate on one side, has reduced welding deformation, has improved rail vehicle sleeper beam's joint strength simultaneously. The invention can avoid the working hours of occupying large platform positions and consuming more manpower because the welding line needs to be processed and leveled after the traditional process gap is arranged on the bottom surface of the sleeper beam of the railway vehicle and the cover plate is welded with the sleeper beam of the railway vehicle.
In order to achieve the second object, the present invention provides the following solutions:
an undercarriage including a railway vehicle bolster as claimed in any one of the preceding claims.
Since the underframe disclosed by the invention comprises the railway vehicle sleeper beam in any one of the above items, the railway vehicle sleeper beam has the beneficial effects that the underframe disclosed by the invention contains.
In order to achieve the third object, the present invention provides the following solutions:
a method of chassis welding comprising the steps of:
step A: manufacturing a sleeper beam main body, and arranging process notches at two ends of the top surface of the sleeper beam main body;
and B: welding a vertical welding seam between an inner side rib plate of the sleeper beam main body and the inner side of the edge beam of the bottom frame through the process notch;
and C: covering an end cover plate on the process gap, and welding the periphery of the end cover plate and a welding seam of the sleeper beam main body;
step D: welding a longitudinal weld between the top surface of the sleeper beam main body and the underframe edge beam;
step E: turning over the underframe, and welding a vertical welding seam between a sleeper beam outer side plate of the sleeper beam main body and the underframe boundary beam;
step F: welding a longitudinal welding seam between the bottom surface of the sleeper beam main body and the underframe edge beam;
step G: the floor connecting section bars and the floor section bars are sequentially arranged on two sides of the sleeper beam main body, the floor connecting section bars are welded on two sides of the sleeper beam main body and then welded with the floor section bars, and the top surface of the sleeper beam main body is flush with the top surface of the floor.
In a specific embodiment, the step a specifically comprises the following steps:
step A1: the first side sleeper beam and the second side sleeper beam are respectively arranged at two longitudinal sides of the middle sleeper beam, and the welding seam between the first side sleeper beam and the middle sleeper beam and the welding seam between the second side sleeper beam and the middle sleeper beam are respectively welded through butt joints;
step A2: and machining a process notch matched with the end cover plate at the middle position of the top surface of the sleeper beam main body along the longitudinal direction of the sleeper beam main body.
In another specific embodiment, the bottom surface of the first side bolster beam in the step a1 is provided with mounting notches along two transverse ends of the vehicle body;
the step A1 and the step A2 further comprise a step H: installing the top surface of the anti-rolling installation seat and the bottom surface of the sleeper beam main body in the installation notch in a flush manner, and welding the anti-rolling installation seat and the bottom surface of the sleeper beam main body in the installation notch;
the step A2 and the step B further include a step I: installing and fixing the bottom surface of the sleeper beam main body upwards, machining the bottom surface of the sleeper beam main body to remove the reserved thickness, locally adjusting and repairing to ensure that the bottom surface of the sleeper beam main body meets the flatness requirement required by installing the bogie air spring;
the step G is also included between the step I and the step B: and inserting the positioning thread block into the anti-rolling mounting seat, and tapping the threaded hole in the positioning thread block and matching with the threaded hole in the anti-rolling mounting seat.
The various embodiments according to the invention can be combined as desired, and the embodiments obtained after these combinations are also within the scope of the invention and are part of the specific embodiments of the invention.
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 some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic view of a first side bolster provided by the present invention;
FIG. 2 is a schematic structural view of a body of a bolster provided by the present invention;
FIG. 3 is a schematic view of an external structure of an anti-roll mount provided by the present invention;
FIG. 4 is a schematic view of the internal structure of the anti-roll mount provided by the present invention;
FIG. 5 is an exploded view of the anti-roll structure provided by the present invention;
FIG. 6 is a schematic structural view of an anti-roll mounting structure provided in the present invention;
FIG. 7 is a schematic view of a top side structure of a railway vehicle bolster provided by the present invention;
FIG. 8 is a schematic view of a bottom structure of a railway vehicle bolster provided by the present invention;
FIG. 9 is a schematic illustration of the rail vehicle bolster provided by the present invention mounted to the front of the underframe;
FIG. 10 is a schematic view of the rail vehicle bolster of the present invention mounted to the bottom surface of the underframe;
FIG. 11 is a schematic cross-sectional view of FIG. 10;
FIG. 12 is a schematic view of an installation structure of an anti-roll structure provided by the present invention;
fig. 13 is a partially enlarged structural schematic view of the bottom chassis provided in the present invention.
Wherein, in fig. 1-13:
the side bolster comprises a first side bolster 101, a second side bolster 102, a middle bolster 103, an anti-roll structure 104, an anti-roll mounting seat 201, a positioning screw block 202, a first mounting edge 2011, a second mounting edge 2012, a third mounting edge 2013, a fourth mounting edge 2014, a left underframe edge beam 301, an end cover plate 302, a right underframe edge beam 303, an end structure bolster 304, a short floor 305, a long floor 306, a floor connecting section 307, an anti-roll torsion bar mounting seat 401 and a bolt 402.
Detailed Description
In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying fig. 1 to 13 and the detailed description thereof.
Example one
The invention discloses a railway vehicle sleeper beam, wherein the railway vehicle sleeper beam comprises a sleeper beam main body, an end cover plate 302 and a floor connecting section bar 307.
Floor connecting section bars 307 are respectively welded on the two longitudinal sides of the sleeper beam main body, the outer sides of the floor connecting section bars 307 are respectively welded with an underframe short floor 305 and a underframe long floor 306, the top surface of the sleeper beam main body is flush with the top surface of the underframe floor, and the underframe floor adopts a non-full-length floor structure, namely the floor is disconnected at the sleeper beam part of the railway vehicle.
Namely, the floor connecting section bar is welded with the sleeper beam main body inwards and is welded with the underframe floor outwards. The underframe floor, the floor connecting section and the sleeper beam main body are sequentially connected.
The horizontal both ends of sleeper beam main part top surface are seted up the technology breach, and the shutoff of tip apron is on the technology breach. Specifically, the process notches are formed in the middle of the two transverse ends of the top surface of the sleeper beam main body.
The process gap is used for welding the vertical rib plate on the inner side of the sleeper beam main body and the vertical welding seam on the inner side of the edge beam of the bottom frame, and then the process gap is sealed by the end cover plate.
The longitudinal welding seam at the end part of the top surface of the sleeper beam main body and the longitudinal welding seam at the end part of the bottom surface of the sleeper beam main body are respectively welded with the longitudinal welding seam of the side beam of the bottom frame, and the sleeper beam main body and the side beam of the bottom frame are vertically welded with the inner side of the side beam of the bottom frame through the vertical rib plate on the sleeper beam main body.
The whole underframe floor is disconnected at the railway vehicle sleeper beam, and is arranged in a partitioning manner, and the longitudinal welding seams and the vertical welding seams of the sleeper beam main body and the underframe boundary beam can be welded, so that the connection strength of the key bearing structure of the railway vehicle sleeper beam is greatly enhanced.
According to the railway vehicle sleeper beam disclosed by the invention, the process notch is formed in the top surface of the sleeper beam main body, so that the problem that the flatness of the lower plane is poor due to the fact that the process notch is arranged on the lower plane of the railway vehicle sleeper beam and is blocked is solved. In addition, chassis floor welding is in the both sides of sleeper beam main part, and the top surface on sleeper beam main part and the top surface parallel and level on chassis floor, is about to chassis floor blocking setting, and the long structure is led to the non-has avoided rail vehicle sleeper beam and chassis floor's welding seam to concentrate on one side, has reduced welding deformation. The invention can avoid the working hours of occupying large platform positions and consuming more manpower because the welding line needs to be processed and leveled after the traditional process gap is arranged on the bottom surface of the sleeper beam of the railway vehicle and the cover plate is welded with the sleeper beam of the railway vehicle.
Example two
In the second embodiment provided by the present invention, the structure of the railway vehicle body bolster in the present embodiment is similar to that of the railway vehicle body bolster in the first embodiment, and the same parts are not repeated, and only the differences will be described.
In the present embodiment, the present invention discloses that the body of the bolster includes a first side bolster 101, a second side bolster 102, and a middle bolster 103, and the first side bolster 101 and the second side bolster 102 are welded to both longitudinal sides of the middle bolster 103, respectively.
Further, the invention discloses that the railway vehicle sleeper beam also comprises an anti-rolling structure 104, wherein the anti-rolling structure 104 comprises an anti-rolling mounting seat 201 and a positioning threaded block 202.
An installation notch is formed in the bottom surface of the first side bolster 101, the anti-rolling installation seat 201 is welded in the installation notch, and the top surface of the anti-rolling installation seat 201 is flush with the bottom surface of the bolster body.
The positioning thread block 202 can be inserted in the anti-rolling mounting seat 201 in a sliding mode, a threaded hole is formed in the positioning thread block 202, a through hole coaxial with the threaded hole is formed in the anti-rolling mounting seat 201, a bolt can penetrate through the through hole to be connected with the threaded hole, and the anti-rolling torsion bar mounting seat 401 is mounted on the anti-rolling mounting seat 201.
Further, the invention discloses that the positioning thread block 202 is a T-shaped block, and the head of the T-shaped block is clamped on the top surface of the anti-rolling mounting seat 201.
Further, the invention discloses that the anti-rolling installation seat 201 is of a hollow structure, a first welding groove which is inclined inwards is arranged in the circumferential direction of the anti-rolling installation seat 201, the first welding groove is welded in the installation gap and the outer side vertical rib plate of the sleeper beam main body, and a second welding groove is arranged in the circumferential direction of the process gap and is used for welding with the end cover plate 302. Anti-roll mount 201 is first welded to the outer side of the bolster body structure. When the bottom surface of the railway vehicle sleeper beam is machined by the reserved machining amount, the top surface of the anti-rolling mounting seat 201 is machined to a certain thickness, and after machining is completed, the positioning thread block 202 is mounted on the anti-rolling mounting seat 201. The positioning screw block 202 is installed in the anti-roll mounting seat 201 through a kidney-shaped hole provided in the upper surface of the anti-roll mounting seat 201. The threaded hole in the set screw block 202 is machined after the set screw block 202 is installed in the anti-roll mount 201. When the vehicle runs, if the positioning thread block 202 is damaged, the positioning thread block can be conveniently detached and replaced.
As shown in fig. 3, the anti-roll mount 201 is a square box structure. Wherein m1 is the front surface of the anti-roll mounting seat 201, and the plane is provided with a plurality of circular through holes in advance according to the mounting requirement for connecting with the anti-roll torsion bar mounting seat 401; m2 is the top surface of the anti-roll mounting base 201, and a plurality of kidney-shaped holes are arranged on the top surface. The mounting edges of the anti-roll mounting seat 201 are respectively named as: the first installation edge 2011, the second installation edge 2012, the third installation edge 2013 and the fourth installation edge 2014 are all processed to form welding grooves. The upper portion of the positioning screw block 202 is provided with a step m3, which is larger than the width dimension of the lower bolt mounting surface m 4. The lower bolt attachment surface m4 is provided with a screw hole that is provided coaxially with the hole on the front surface m1 of the anti-roll attachment base 201 when the screw positioning block is attached to the anti-roll attachment base 201. The length H1 of the lower bolt mounting surface m4 of the set screw block 202 corresponds to the length of the height H2 in the anti-roll mounting seat 201.
Specifically, the section of the first side bolster 101 and the section of the second side bolster 102 are the same, except that the first side bolster 101 is provided with mounting notches along both sides of the longitudinal direction of the section, specifically, the mounting notches are square notches, and the mounting notches are matched with the external dimensions of the anti-rolling mounting seat 201. The first side sleeper beam 101, the second side sleeper beam 102 and the middle sleeper beam 103 are all of an integrated aluminum alloy extruded section structure consisting of an upper plate, a lower plate and a plurality of reinforcing rib plates positioned between the upper plate and the lower plate. The first side bolster 101 and the second side bolster 102 are provided with welding backing plates, welding is simple, and welding seam quality is easy to control. The lower plates of the first side bolster 101, the second side bolster 102, and the middle bolster 103 are all thicker than the upper plates. The structure of the first side bolster 101 is shown in fig. 1, S1 is an upper plate plane of the first side bolster 101, S2 is a lower plate plane of the first side bolster 101, S3 is a rail vehicle bolster inner side vertical rib plate of the first side bolster 101, S4 is a rail vehicle bolster outer side vertical rib plate of the first side bolster 101, and the middle reinforcing rib structure can be flexibly designed according to actual rigidity requirements. Square notches q1 (namely installation notches) are machined at two ends of the S2, and the thickness of the S2 plate is larger than that of the S1 plate.
The first side bolster 101, the middle bolster 103, and the second side bolster 102 are assembled as shown in fig. 2, and the three profiles are butt-welded by a butt joint W1 on the upper surface and a butt joint W2 on the lower surface, respectively, to constitute a bolster body. The two ends of the first side bolster 101 close to the outer side of the vehicle body along the length direction are pre-processed with square notches q1 matched with the anti-rolling mounting seats 201; and fixedly welding the profiles together according to the arrangement sequence of the first side sleeper beam 101, the middle sleeper beam 103 and the second side sleeper beam 102 to form a sleeper beam main body structure.
Further, the invention discloses that the bottom surface of the sleeper beam main body is flush with the bottom surface of the underframe boundary beam.
When the railway vehicle sleeper beam is welded, firstly, aluminum alloy railway vehicle sleeper beam profiles are processed according to respective use requirements, then the profiles are welded into a sleeper beam main body in a splicing mode, then the anti-rolling mounting seat 201 is welded to the side face of the railway vehicle sleeper beam on the outer side edge, and a U-shaped technological notch is processed on the top face of the assembled railway vehicle sleeper beam; fixing the railway vehicle sleeper beam on the platform, processing the thickness reserved on the bottom surface of the railway vehicle sleeper beam according to requirements, assembling the threaded positioning block into the anti-rolling mounting seat 201, and fixing to finally form the railway vehicle sleeper beam in the text. It should be noted that the reserved thickness of the bottom surface of the sleeper beam of the railway vehicle can be adjusted to be performed after the end structure is assembled and welded. The sleeper beam main body, the draft sill and the bumper beam are assembled and welded into an end structure, and finally the end structure, the underframe boundary beam, the underframe floor, the floor connecting section 307 and the like are assembled and welded together into the car body underframe. The specific implementation process is as follows:
1) the aluminum alloy railway vehicle sleeper beam profile is mainly formed by integrally extruding an upper plate, a lower plate and a reinforcing rib plate, wherein the thickness of the lower plate of the profile is larger than that of the upper plate, the upper surface of the upper plate is flush with the upper surface of the floor of the underframe, and the plane of the lower plate is processed by the reserved thickness and is finally flush with the lower surface of the boundary beam of the underframe.
2) The aluminum alloy sleeper beam main body structure is formed by welding a middle sleeper beam 103, a first side sleeper beam 101 and a second side sleeper beam 102, wherein the first side sleeper beam 101, the middle sleeper beam 103 and the second side sleeper beam 102 are sequentially distributed along the longitudinal direction of a vehicle body; the middle bolster 103 is of unitary construction and the first and second side bolsters 101, 102 are of unitary construction. In the welding, a main weld of the body of the bolster in the vehicle transverse direction is welded by the butt joint W1 and the butt joint W2.
3) Mounting the top surface m2 of the anti-rolling mounting seat 201 and the bottom surface of the sleeper beam main body in a flush manner, and mounting the top surface m2 and the bottom surface of the sleeper beam main body in a matching manner with the square notch formed on the first side sleeper beam 101; the first mounting edge 2011 is aligned with the transverse edge of the square notch, the second mounting edge 2012 and the third mounting edge 2013 are respectively and vertically mounted with the outer side rib plate S4 of the first side bolster 101, and then the anti-rolling mounting seats 201 at the two ends are welded to the outer side of the first side bolster 101 through welding seams W3.
4) Processing the welded railway vehicle sleeper beam assembly structure: and respectively processing U-shaped process notches q2 at two ends connected with the side beam of the underframe at the middle position of the top surface of the railway vehicle sleeper beam assembly along the longitudinal direction of the railway vehicle sleeper beam, wherein the U-shaped process notches q2 are used for welding vertical rib plates in the railway vehicle sleeper beam assembly with the side beam of the underframe, and the size of an opening of the U-shaped process notch q2 does not exceed the position of the vertical rib plate in the railway vehicle sleeper beam during processing.
5) And (3) machining the bottom surface S32 of the sleeper beam main body to remove the reserved thickness, and locally adjusting and repairing to ensure that the plane meets the required flatness requirement.
6) The positioning screw block 202 is assembled in the welded anti-rolling installation seat 201, the positioning screw block 202 penetrates through the top surface m2 of the anti-rolling installation seat 201, meanwhile, the bottom surface of the upper structure m3 of the positioning screw block 202 is ensured to be contacted with the top surface m2 of the anti-rolling installation seat 201, the side surface m4 of the positioning screw block 202 is in contact with the inner surface of the front surface m1 of the anti-rolling installation seat 201 in an attaching mode, and after the installation is completed, a threaded hole in the side surface m4 of the positioning screw block 202 is tapped and matched with a threaded hole in the front surface m1 of the anti-rolling installation seat 201.
7) And assembling and welding the sleeper beam into an end structure, and assembling and welding the welded end structure into an underframe. The upper cover plate plane of the end structure sleeper beam 304 is upwards fixed on the left underframe boundary beam 301 and the right underframe boundary beam 303 in a spot welding mode, a vertical reinforcing plate S3 on the inner side of the railway vehicle sleeper beam assembly and a welding seam W4 on the vertical plane on the inner side of the underframe boundary beam are welded firstly, the end cover plate 302 of the railway vehicle sleeper beam is fixed in a spot welding mode, a welding seam W5 for connecting the end cover plate 302 and the railway vehicle sleeper beam is welded, finally, a longitudinal welding seam W6 for the railway vehicle sleeper beam and the underframe boundary beam is welded, and the upper surface of the end structure railway vehicle sleeper beam 304 and the underframe boundary beam are welded.
8) And after the main welding line on the top surface of the underframe assembly is welded, flanging the underframe and welding the welding line on the lower plane of the sleeper beam of the railway vehicle. Welding an end structure railway vehicle sleeper beam 304 outer side vertical rib plate S4 and an underframe boundary beam welding line W7, welding an end structure railway vehicle sleeper beam 304 and an underframe boundary beam longitudinal welding line W8, measuring and locally adjusting the flatness of the bottom surface of the railway vehicle sleeper beam after welding is completed, ensuring that the flatness of the plane reaches within 0.5, and simultaneously ensuring that the plane of a lower cover plate of the railway vehicle sleeper beam is flush with the lower plane of the underframe boundary beam.
9) The underframe short floor 305, the floor connecting section bar 307, the end structure railway vehicle sleeper beam 304, the floor connecting section bar 307 and the underframe long floor 306 are arranged along the longitudinal direction of the vehicle body and are welded together to form the underframe structure of the non-through long underframe floor.
10) The connection of anti-roll torsion bar mount 401 and anti-roll mount 201 is further described after the chassis assembly is complete. A bogie anti-roll torsion bar mount is mounted on the anti-roll mount 201 to connect the bogie anti-roll torsion bar. And a bolt 402 sequentially penetrates through the mounting surface of the anti-rolling torsion bar seat, the plane of the anti-rolling torsion bar mounting seat 401 and the bolt hole on the lower m4 of the positioning thread block 202 from the outer side to be fixedly mounted for being subsequently connected with the anti-rolling torsion bar of the bogie. Specifically, the length H1 of the set screw block 202 is compatible with the height H2 length in the anti-roll mount 401.
EXAMPLE III
The present invention provides an undercarriage including a railway vehicle bolster as in any one of the embodiments above.
Since the underframe disclosed by the invention comprises the railway vehicle sleeper beam in any one of the embodiments, the railway vehicle sleeper beam has the beneficial effects that the underframe disclosed by the invention comprises.
Example four
The invention provides a chassis welding method, which comprises the following steps:
step S1: manufacturing a sleeper beam main body, and arranging technical notches at two ends of the top surface of the sleeper beam main body.
Specifically, the process notch is a U-shaped notch.
Step S2: and welding a vertical welding seam between the inner side rib plate of the sleeper beam main body and the inner side of the edge beam of the underframe through the process gap.
Step S3: the end cover plate 302 is covered on the process gap, and the welding seam of the periphery of the end cover plate 302 and the sleeper beam main body is welded.
Step S4: and welding a longitudinal welding seam between the top surface of the sleeper beam main body and the side beam of the underframe.
Step S5: and (4) overturning the underframe, and welding a vertical welding seam between the sleeper beam outer side plate of the sleeper beam main body and the underframe boundary beam.
Step S6: and welding a longitudinal welding seam between the bottom surface of the sleeper beam main body and the side beam of the underframe.
Step S7: the underframe floor and the floor connecting section bar 307 are sequentially arranged on both sides of the sleeper beam main body, the floor connecting section bar 307 is welded on both sides of the sleeper beam main body and then welded with the floor section bar, and the top surface of the sleeper beam main body is flush with the top surface of the underframe floor.
In the invention, the process notch is formed on the top surface of the sleeper beam main body, so that the problem of poor flatness of the lower plane caused by the fact that the process notch is arranged on the lower plane of the sleeper beam of the railway vehicle and is blocked is solved. In addition, underframe floor and floor connecting section 307 welds in the both sides of sleeper beam main part, and the top surface of sleeper beam main part and the top surface parallel and level on underframe floor, is about to the setting of underframe floor piecemeal, rather than leading to long structure, has avoided rail vehicle sleeper beam and underframe floor's welding seam to concentrate on one side, has reduced welding deformation. The invention can avoid the working hours of occupying large platform positions and consuming more manpower because the welding line needs to be processed and leveled after the traditional process gap is arranged on the bottom surface of the sleeper beam of the railway vehicle and the cover plate is welded with the sleeper beam of the railway vehicle.
EXAMPLE five
In a fifth embodiment provided by the present invention, a welding method for a railway vehicle body bolster in the present embodiment is similar to the welding method for a railway vehicle body bolster in the fourth embodiment, and the same parts are not repeated and only differences are introduced.
In this embodiment, the present invention discloses that step S1 specifically includes the following steps:
step S11: the first side bolster 101 and the second side bolster 102 are respectively placed on both longitudinal sides of the middle bolster 103, and the weld between the first side bolster 101 and the middle bolster 103 and the weld between the second side bolster 102 and the middle bolster 103 are respectively welded by butt joints.
Step S12: and machining a technical notch matched with the end cover plate at the middle position of the top surface of the sleeper beam main body along the longitudinal direction of the sleeper beam main body.
Further, the invention discloses that the bottom surface of the first side bolster 101 in step S11 is provided with mounting notches along both ends in the lateral direction of the vehicle body.
Step S8 is further included between step S11 and step S12: the top surface of the anti-roll mounting seat 201 and the bottom surface of the body of the sleeper beam are mounted in the mounting notches in parallel and level and are welded in the mounting notches.
Step S9 is further included between step S12 and step S2: the bottom surface of the sleeper beam main body is installed and fixed upwards, the reserved thickness of the bottom surface of the sleeper beam main body is machined, and local adjustment and repair are carried out, so that the bottom surface of the sleeper beam main body meets the flatness requirement for installing the bogie air spring.
Step S10 is further included between step S9 and step S2: the positioning thread block is inserted into the anti-roll mounting seat 201, and the threaded hole in the positioning thread block is tapped and matched with the threaded hole in the anti-roll mounting seat 201.
In the description of the present invention, the terms defined in directions are only for convenience of description and simplicity of description, and do not indicate or imply that the referred devices or elements must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and inventive features disclosed herein.
Claims (10)
1. A railway vehicle sleeper beam is characterized by comprising a sleeper beam main body, end cover plates and floor connecting profiles welded on the two longitudinal sides of the sleeper beam main body;
longitudinal welding seams at two ends of the top surface of the sleeper beam main body and longitudinal welding seams at two ends of the bottom surface of the sleeper beam main body are respectively welded with the longitudinal welding seams of the side beams of the underframe;
the sleeper beam main body and the underframe boundary beam are vertically welded with the inner side of the underframe boundary beam through a vertical rib plate on the sleeper beam main body;
the inner side of the floor connecting section is welded with the sleeper beam main body, the outer side of the floor connecting section is welded with the underframe floor, and the top surface of the sleeper beam main body is flush with the top surface of the underframe floor;
the two ends of the top surface of the sleeper beam main body are provided with process notches, and the end cover plate is plugged on the process notches.
2. The rail vehicle bolster of claim 1, wherein the bolster body includes a first side bolster, a second side bolster, and a middle bolster;
the first side bolster and the second side bolster are welded to the longitudinal two sides of the middle bolster respectively.
3. The railway vehicle bolster of claim 2, further comprising an anti-roll structure;
the anti-rolling structure comprises an anti-rolling mounting seat and a positioning thread block;
the bottom surface of the first side sleeper beam is provided with an installation notch, the anti-rolling installation seat is welded in the installation notch, and the top surface of the anti-rolling installation seat is flush with the bottom surface of the sleeper beam main body;
the positioning thread block can be inserted in the anti-rolling mounting seat in a sliding mode, a threaded hole is formed in the positioning thread block, a through hole coaxial with the threaded hole is formed in the anti-rolling mounting seat, a bolt can penetrate through the through hole to be connected with the threaded hole, and the anti-rolling torsion bar mounting seat is mounted on the anti-rolling mounting seat.
4. The rail vehicle bolster of claim 3, wherein the set screw block is a T-block having a head that snaps onto a top surface of the anti-roll mount.
5. The railway vehicle sleeper beam according to claim 3, wherein the anti-rolling mounting seat is of a square box type hollow structure, a first welding groove which is inclined inwards is arranged in the circumferential direction of the anti-rolling mounting seat, and the first welding groove is welded on the mounting notch and an outer vertical rib plate of the sleeper beam main body;
and second welding grooves are formed in the circumferential direction of the process notches at the two ends of the sleeper beam main body and are used for welding with the end cover plates.
6. The rail vehicle bolster of any of claims 1-5, wherein a bottom surface of the bolster body is flush with a bottom surface of the undercarriage side rails.
7. An undercarriage including a railway vehicle bolster as claimed in any one of claims 1 to 6.
8. A chassis welding method is characterized by comprising the following steps:
step A: manufacturing a sleeper beam main body, and arranging process notches at two ends of the top surface of the sleeper beam main body;
and B: welding a vertical welding seam between an inner side rib plate of the sleeper beam main body and the inner side of the edge beam of the bottom frame through the process notch;
and C: covering an end cover plate on the process gap, and welding the periphery of the end cover plate and a welding seam of the sleeper beam main body;
step D: welding a longitudinal weld between the top surface of the sleeper beam main body and the underframe edge beam;
step E: turning over the underframe, and welding a vertical welding seam between a sleeper beam outer side plate of the sleeper beam main body and the underframe boundary beam;
step F: welding a longitudinal welding seam between the bottom surface of the sleeper beam main body and the underframe edge beam;
step G: the floor connecting section bars and the floor section bars are sequentially arranged on two sides of the sleeper beam main body, the floor connecting section bars are welded on two sides of the sleeper beam main body and then welded with the floor section bars, and the top surface of the sleeper beam main body is flush with the top surface of the floor.
9. The chassis welding method according to claim 8, wherein the step a comprises the following steps:
step A1: the first side sleeper beam and the second side sleeper beam are respectively arranged at two longitudinal sides of the middle sleeper beam, and the welding seam between the first side sleeper beam and the middle sleeper beam and the welding seam between the second side sleeper beam and the middle sleeper beam are respectively welded through butt joints;
step A2: and machining a process notch matched with the end cover plate at the middle position of the top surface of the sleeper beam main body along the longitudinal direction of the sleeper beam main body.
10. The underframe welding method according to claim 9, wherein the first side bolster bottom surface in step a1 is provided with mounting notches along the two transverse ends of the car body;
the step A1 and the step A2 further comprise a step H: installing the top surface of the anti-rolling installation seat and the bottom surface of the sleeper beam main body in the installation notch in a flush manner, and welding the anti-rolling installation seat and the bottom surface of the sleeper beam main body in the installation notch;
the step A2 and the step B further include a step I: installing and fixing the bottom surface of the sleeper beam main body upwards, machining the bottom surface of the sleeper beam main body to remove the reserved thickness, locally adjusting and repairing to ensure that the bottom surface of the sleeper beam main body meets the flatness requirement required by installing the bogie air spring;
the step G is also included between the step I and the step B: and inserting the positioning thread block into the anti-rolling mounting seat, and tapping the threaded hole in the positioning thread block and matching with the threaded hole in the anti-rolling mounting seat.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910949278.6A CN110588693B (en) | 2019-10-08 | 2019-10-08 | Railway vehicle sleeper beam, underframe and underframe welding method |
| PCT/CN2020/088909 WO2021068498A1 (en) | 2019-10-08 | 2020-05-07 | Railway vehicle sleeper beam, underframe and underframe welding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910949278.6A CN110588693B (en) | 2019-10-08 | 2019-10-08 | Railway vehicle sleeper beam, underframe and underframe welding method |
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| CN110588693A true CN110588693A (en) | 2019-12-20 |
| CN110588693B CN110588693B (en) | 2021-07-16 |
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| WO (1) | WO2021068498A1 (en) |
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| WO2021068498A1 (en) * | 2019-10-08 | 2021-04-15 | 中车株洲电力机车有限公司 | Railway vehicle sleeper beam, underframe and underframe welding method |
| CN113442966A (en) * | 2020-03-27 | 2021-09-28 | 比亚迪股份有限公司 | Bogie for railway vehicle and railway vehicle with same |
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| CN113602308A (en) * | 2021-08-20 | 2021-11-05 | 中车株洲电力机车有限公司 | Rail vehicle chassis |
| CN114148363A (en) * | 2021-12-29 | 2022-03-08 | 中车青岛四方机车车辆股份有限公司 | Railway vehicle and end underframe thereof |
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| Publication number | Publication date |
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| CN110588693B (en) | 2021-07-16 |
| WO2021068498A1 (en) | 2021-04-15 |
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