CN111822947B - Machining method for stay bar assembly in straddle bogie end beam structure - Google Patents
Machining method for stay bar assembly in straddle bogie end beam structure Download PDFInfo
- Publication number
- CN111822947B CN111822947B CN202010535709.7A CN202010535709A CN111822947B CN 111822947 B CN111822947 B CN 111822947B CN 202010535709 A CN202010535709 A CN 202010535709A CN 111822947 B CN111822947 B CN 111822947B
- Authority
- CN
- China
- Prior art keywords
- support rod
- welding
- free end
- welded
- seat plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
- Laser Beam Processing (AREA)
Abstract
The invention discloses a processing method of a stay bar assembly in a straddle bogie end beam structure, which comprises the following steps: inserting one end of a support rod into a support rod mounting hole in the first seat plate and pre-fixing the support rod, wherein the other end of the support rod is a free end; connecting a rigid binding tool at the free end of the support rod; welding the welding line between the support rod and the support rod mounting hole; carrying out annealing treatment after welding; the connection between the rigid binding tool and the free end of the support rod is still kept in the annealing process. The invention has the beneficial effects that: when the support rod is welded, the rigid constraint tool is additionally arranged at the free end of the support rod, so that the rigid constraint of the free end of the support rod is increased, and the size change of the support rod in the welding process is reduced.
Description
Technical Field
The invention relates to the technical field of railway vehicles, in particular to a machining method for a stay bar assembly in a straddle bogie end beam structure.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
Straddle type monorail transit is that a vehicle straddles on a track beam, and the track beam is a bearing structure and a guide structure when the vehicle runs. A bogie of a straddle type monorail transit vehicle is arranged below a carriage and is an important component for realizing straddle type monorail transit.
In the prior art, in order to solve the technical problems of low structural strength and weak bearing capacity of an end beam structure in a straddle type monorail vehicle bogie, a support rod assembly is welded in the end beam structure to serve as a reinforcing assembly so as to increase the overall structural strength of the end beam structure and enable the end beam structure to bear larger load. Referring to fig. 1, the straddle truck end beam structure specifically includes: the device comprises a lower cover plate 1, a vertical plate 2, a buckle plate 3, a support rod, a first seat plate 5-1, a second seat plate 5-2, an upper cover plate 6, a guide wheel bracket 7 and a height valve mounting seat 8; referring to fig. 2, the support rod assembly is formed by welding 6 support rods 4, a first seat plate 5-1, a second seat plate 5-2 and a buckle plate 3, wherein the first seat plate and the second seat plate are respectively provided with support rod mounting holes, the support rods are assembled in the support rod mounting holes, and the deviation between the center of a support rod processing hole and the center of each support rod is required to be not more than 2 mm.
In the end beam composition, 6 support rods occupy important interface positions, so that the requirement on the size precision of the support rods is high; the vaulting pole at first welds with the vaulting pole mounting hole on the first bedplate, however, in welding process, the following problem appears easily:
the welding operation is concentrated on one side of the support rod connected with the first seat plate, the other end of the support rod is in a free state, the rigidity constraint is poor, and the support rod is easy to deform; the deviation control between the center of the processing hole of the support rod and the center of the support rod is difficult, and the size deviation among the support rods is large;
in addition, in order to ensure that the welding seam between the support rod and the support rod mounting hole can be melted through, an assembly gap of 1-3mm needs to be arranged between the support rod and the support rod mounting hole; the machining tolerance accumulation of vaulting pole and first bedplate for it is even to be difficult to guarantee to prop the stick and prop the stick mounting hole equipment clearance with first bedplate when guaranteeing to prop stick relative dimension, thereby causes the welding deformation because the welding volume is different and arouse easily.
The stay bar that above-mentioned reason leads to warp, adjusts and repaiies the work difficulty, and work load is big, probably causes the unable accurate butt joint of stay bar mounting hole on stay bar and the second bedplate during serious for the end beam is constituteed and is scrapped.
Disclosure of Invention
In view of the above, the invention provides a processing method for a strut assembly in an end beam structure of a straddle bogie, which effectively solves the problems that the deviation between the center of a strut processing hole and the center of a strut is difficult to control and the size deviation between struts is large by designing a rigid constraint tool and controlling a welding gap and a welding sequence, reduces the adjustment and repair workload and improves the production efficiency.
According to a first aspect of the embodiments of the present invention, there is provided a method for processing a stay bar assembly in a straddle truck end beam structure, comprising:
inserting one end of a support rod into a support rod mounting hole in the first seat plate and pre-fixing the support rod, wherein the other end of the support rod is a free end;
connecting a rigid binding tool at the free end of the support rod;
welding the welding line between the support rod and the support rod mounting hole;
carrying out annealing treatment after welding; the connection between the rigid binding tool and the free end of the support rod is still kept in the annealing process.
According to a second aspect of the embodiments of the present invention, there is provided a method for processing a straddle truck end beam assembly, including: and the processing process of the stay bar assembly adopts the processing method of the stay bar assembly in the straddle bogie end beam structure.
Compared with the prior art, the invention has the beneficial effects that:
(1) when the support rod is welded, the rigid constraint tool is additionally arranged at the free end of the support rod, so that the rigid constraint of the free end of the support rod is increased, and the size change of the support rod in the welding process is reduced; meanwhile, the rigid constraint tool is of an integrated structure, so that the rigid constraint tool is conveniently connected with the support rod. Compared with a split structure, the free end is stronger in binding effect, and deformation control is more effective.
(2) After the welding and grinding of the support rod and the first seat plate are finished, the rigid binding tool is driven to anneal, so that the change of the size of the support rod caused by the release of welding residual stress in the annealing process can be prevented.
(3) When the support rod welding is carried out, the welding sequence is optimized, and the deformation of the support rod caused by concentrated heat input can be avoided.
(4) According to the invention, the assembling clearance between the support rods and the support rod mounting holes of the first seat plate is controlled to be uniform, and the deviation of the assembling clearance of each support rod is controlled within a set threshold value, so that welding deformation caused by different welding quantities due to nonuniform clearance can be avoided.
Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic view of a prior art straddle truck end beam configuration;
FIG. 2 is a schematic view of a structure of a support rod in the prior art;
FIG. 3 is a flow chart of a method for manufacturing a support bar comprising an end beam of a straddle truck according to an embodiment of the present invention;
FIG. 4 is a schematic view of an assembly gap between a brace and a brace mounting hole according to an embodiment of the present invention;
FIG. 5 is a schematic diagram of a support rod connected to a rigid tie down fixture according to an embodiment of the present invention;
FIG. 6 is a schematic view of a welding sequence for a support rod according to an embodiment of the present invention;
FIG. 7 is a flow chart of a method of manufacturing a straddle truck end beam assembly according to an embodiment of the present invention;
FIG. 8 is a schematic view of an assembly welding state of the end beam inner rib according to an embodiment of the invention;
the device comprises a lower cover plate 1, a vertical plate 2, a buckle plate 3, a support rod 4, a first seat plate 5-1, a second seat plate 5-2, an upper cover plate 6, a guide wheel bracket 7, a height valve mounting seat 8 and a rigid binding tool 9.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, and it should be understood that the terms "comprises" and "comprising", and any variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.
Example one
According to an embodiment of the present invention, there is provided an embodiment of a method for processing a strut assembly in a straddle truck end beam structure, and fig. 3 is a flowchart of a method for processing a strut assembly in a straddle truck end beam structure according to an embodiment of the present invention, referring to fig. 3, the method includes the following steps:
step S101: assembling the support rod and the first seat plate;
specifically, the supporting rods and the first seat plate are assembled together and pre-fixed on the assembling platform, namely, each supporting rod is installed in the corresponding supporting rod installation hole in the first seat plate according to the technological requirements, and the supporting rods and the supporting rod installation holes are pre-fixed through spot welding or other modes.
In some embodiments, prior to pre-fixing, adjusting an assembly gap between the brace and the brace mounting hole;
specifically, the support rod and the support rod mounting hole are assembled concentrically to ensure that the assembly gap is uniform, and the assembly gap is controlled within the range of (1-2) mm, as shown in fig. 4. The deviation of the assembly clearance of each support rod is not more than 0.5 mm.
The positions with uneven assembly gaps are ground, and welding deformation caused by different welding amounts due to uneven gaps is avoided by controlling the assembly gaps.
In this embodiment, the assembling clearance of the support rod means: after the support rod is assembled with the support rod mounting hole of the first seat plate or the support rod mounting hole of the second seat plate, a gap is formed between the support rod and the support rod mounting hole.
After the assembly clearance of the support rods is adjusted, and the dimension among the support rods meets the requirement, the support rods are fixed by spot welding; in order to eliminate the influence of the spot welding process on the size of the support rod, the position of the support rod is finely adjusted after spot welding is completed.
As an optional implementation manner, in order to reduce the deformation of the free end of the supporting rod caused by the contraction of the welding seam between the supporting rod and the first seat plate, the rigid binding tool 9 is designed according to the arrangement form of the supporting rod. The rigid constraint tool is fixedly welded at the free end point of the support rod, so that the rigid constraint of the free end of the support rod is increased, and the size change among the support rods is reduced.
Specifically, the rigid binding tool 9 is an integrated structure, and the free end of each support rod is connected with the rigid binding tool 9.
The structure of rigidity constraint frock is designed according to the mode of arranging of vaulting pole, for example: when the number of the support rods is two, the rigid constraint tool is designed into a linear structure; when the number of the support rods is larger than two, the rigid binding tool is designed to be of an annular structure, wherein the annular structure can be triangular or polygonal or circular according to the number of the support rods. The free ends of each two adjacent struts are connected by a ring structure.
Fig. 5 shows a specific structural form of a rigid binding tool, and referring to fig. 5, the rigid binding tool 9 is an integrated polygonal plate-shaped structure, and a support rod is connected to each included angle position of the polygonal plate-shaped structure and is fixed by means of tack welding; the rigid binding tool is connected with each support rod through an integral structure, so that a better binding effect can be achieved.
It should be noted that the arrangement form of the support rods provided in this embodiment is a manner that 6 support rods are arranged in a central symmetry manner, but the present invention is not limited thereto, and a person skilled in the art may set the number and the arrangement form of the support rods according to actual needs.
Step S102: the support rod and the first seat plate are welded and grinded in one step;
specifically, after the support rod and the first seat plate are assembled, a welding seam between the support rod and the first seat plate is welded by using MAG welding.
Optimizing the welding sequence of the support rods, when welding the welding seams between the support rods and the support rod mounting holes, selecting a second position support rod which is farthest away from the support rods as a next welding support rod after the first position support rod is welded, and selecting a third position support rod which is farthest away from the second position support rod from the rest unwelded support rods as a next welding support rod in the rest unwelded support rods; and so on until all the support rods are welded; this avoids large weld stress deformations due to heat input concentrations.
In the embodiment, the support rods are distributed on the first seat plate in a central symmetry manner, so that the welding seams between each support rod and the support rod mounting hole on the first seat plate are welded by adopting a cross-symmetric welding sequence; the specific welding sequence is as follows:
after the welding of the current support rod is finished, preferentially selecting the support rod which is symmetrical to the center of the current welding support rod as a next welding support rod; if the welding of the support rod which is symmetrical to the center of the current welding support rod is finished, the support rod which is farthest away from the current support rod is selected as the next welding support rod, and the deformation of the support rod caused by heat input concentration can be eliminated by adopting the sequence of cross-symmetrical welding.
Referring to fig. 6, welding each support rod according to the welding sequence from (i) - (ii); when a single support rod is used for welding, the girth weld is subjected to two-section arc starting welding, D1 in fig. 6 represents first-section arc starting, D2 represents second-end arc starting, the outer side weld is welded firstly, then the inner side weld is welded, and welding is carried out according to the mode, so that the welding quality defect caused by body movement in the welding process of welding operators can be effectively avoided. In order to reduce welding deformation, the welding seam on the back is only bottomed and is welded together during buckling welding.
As an optional implementation mode, when a single support rod is welded, after each layer of welding seam is welded, the welding seam is impacted by using a wind shovel, and the welding stress can be released to a certain extent through the impact of the wind shovel, so that the purpose of reducing welding deformation is achieved; and polishing the welding line by using an angle grinder and an air mill after the welding is finished.
Step S103: after the welding of the support rod and the first seat plate is finished, annealing treatment is carried out;
because welding stress inevitably exists in the welding process, if the welding stress can not be effectively removed, after the rigid constraint tool is removed, the welding stress can cause the deformation of the support rod, and further the size control of the support rod is influenced. In order to effectively remove welding stress, after one-step welding and grinding is finished, the workpiece is annealed for 2 hours at the temperature of (590 +/-20) ℃ by using an annealing furnace with a rigid binding tool. The welding stress is eliminated through annealing, and the purpose of reducing welding deformation is further achieved.
Step S104: shot blasting;
specifically, after annealing is completed, oxide skin is generated on the surfaces of the support rod and the first seat plate, and in order to reduce the influence of the oxide skin on welding quality, the surface of the support rod and the surface of the first seat plate are hit by using a shot blasting mode, so that the purpose of removing the oxide skin is achieved.
Step S105: assembling the buckle plate;
specifically, after the shot blasting is completed, the buckle plate is assembled with the support rod and the welding piece of the first seat plate, and the verticality of the buckle plate and the first seat plate is detected during assembly. And after the verticality and the size are controlled to meet the requirements, performing positioning welding by using MAG welding. The assembled state of the pinch plate is shown in figure 2.
Step S106: welding and grinding the pinch plate;
specifically, after the buckle plate is assembled, a welding seam between the buckle plate and the first seat plate is welded by using an MAG welding process. And polishing the welding line by using an angle grinder and an air mill after the welding is finished.
And after the welding of the relevant welding seams of the pinch plate is finished, taking down the rigid constraint tool to perform scribing and adjusting and repairing operations.
Step S107: marking and adjusting;
specifically, in order to detect whether the size of the support rod composition meets the technological requirements, a three-dimensional scriber is used for detecting the relative size of the support rod, and the deformation direction and the deformation amount of the support rod are marked to prepare for adjustment and repair; the specific operation is as follows: the supporting rod assembly is hoisted to a three-dimensional scribing instrument platform, supported by a supporting tool, and leveled and aligned by a pickaxe needle. After alignment, the sizes of the 6 support rods are detected by using a three-dimensional scribing instrument, and compared with the theoretical sizes, the deformation direction and the deformation amount of the support rods are marked.
According to the scribing result, the relative size between the support rods is adjusted by using a press or a flame mode so as to meet the process requirement.
Step S108: assembling and welding the support rod and the second seat plate; the step is executed after the end beam assembly is buckled;
specifically, according to the deformation direction and deformation amount of the marked support rod, when the support rod is welded with the second seat plate, the overall welding sequence also adopts the cross symmetrical welding sequence from (i) to (ii) shown in fig. 6, the welding of the welding seam of the single support rod is carried out in two sections, the welding of the side opposite to the deformation direction of the support rod is preferentially carried out, and then the welding of the side in the deformation direction of the support rod is carried out. By welding in the above manner, the deformation caused by welding in the previous step can be regarded as the reverse deformation in the present step, and the welding deformation in the previous step can be corrected by the stress caused by welding in the present step.
When a single support rod welding seam is welded, the welding seam is impacted by using the wind shovel after welding of each layer of welding seam is completed, welding stress can be released to a certain extent through impact of the wind shovel, and the purpose of reducing welding deformation is achieved.
Example two
According to an embodiment of the invention, an embodiment of a machining method for a straddle truck end beam assembly is provided, and the method comprises a machining method for a support rod in the first embodiment. Referring to fig. 7, the following process is included:
step S201: blanking, processing and profiling;
specifically, the process of cutting the single parts such as the lower cover plate and the vertical plate from the steel plate through laser cutting or flame cutting is blanking. The process of processing grooves of parts such as vertical plates and the like by using a milling machine is processing. The process of obtaining the required shape through the press and the pressing die is pressing.
Step S202: welding the inner rib group, the welding and the support rod;
and the inner rib assembly is a process of positioning and compressing through an end beam inner rib assembly welding tool, and assembling the lower cover plate, the vertical plate, the support rod and the rib plate together. The rib plates and the vertical plates are assembled together according to the technological dimension requirements, and then the lower cover plate, the vertical plates and the support rods are assembled together through positioning, pressing and other devices of the end beam inner rib assembly welding tool. The assembly gap between the parts is required to be not more than 1 mm. And after the assembly dimension of each part is detected to be qualified, performing positioning welding at the specified position of the part by using MAG welding. The assembled state of the inner ribs is shown in fig. 8. And after the inner ribs are assembled, detecting the positioning sizes, and welding the welding seams among the lower cover plate, the vertical plate, the rib plate and the support rod in an MAG welding mode after the detection is qualified.
The welding of the support rod components is realized by adopting the method of steps S101-S107 in the first embodiment.
Step S203: buckling and assembling and welding;
and after the inner ribs are welded, assembling the upper cover plate and the second seat plate on the inner ribs of the end beam. When the second seat plate is assembled, the assembling clearance between the second seat plate and the support rod is controlled within the range of (1-2) mm. And after the upper cover plate and the second seat plate are assembled, the detection positioning sizes are assembled. And after the sizes of the positioning arms are detected to be qualified, welding seams of the upper cover plate and the vertical plate and welding seams of the second seat plate and the support rod are welded in an MAG welding mode.
Step S204: assembling and welding accessories;
and the process of assembling and welding the guide wheel bracket and the height valve mounting seat on the end beam is accessory assembling and welding.
Step S205: marking and adjusting;
the positioning size among all parts formed by the end beam is detected by a three-dimensional scribing instrument, the difference value between the size of each part of the welded rear end beam and the theoretical size is determined, and the process of marking the deformation direction and the deformation of each part is the scribing. And according to the deformation of the marking marks, adjusting and repairing the sizes of all parts of the end beam to reach the theoretical requirements in a pressure adjustment or flame heating mode.
Step S206: annealing;
welding stress is inevitably generated in the welding process, and the existence of the welding stress can cause deformation of each component of the end beam, so that the theoretical size requirement cannot be met. The welding stress is released in an annealing mode, and the purpose of controlling welding deformation is further achieved.
Step S207: processing;
and (3) processing the end beam by a processing center to form each mounting hole and mounting surface.
Step S208: coating;
and the end beam is sprayed with primer and finish paint, so that the purposes of beauty and rust prevention are achieved.
Although the embodiments of the present invention have been described with reference to the accompanying drawings, it is not intended to limit the scope of the present invention, and it should be understood by those skilled in the art that various modifications and variations can be made without inventive efforts by those skilled in the art based on the technical solution of the present invention.
Claims (8)
1. A processing method for a stay bar assembly in a straddle truck end beam structure is characterized by comprising the following steps:
inserting one end of a support rod into a support rod mounting hole in the first seat plate and pre-fixing the support rod, wherein the other end of the support rod is a free end;
connecting a rigid binding tool at the free end of the support rod; the rigid binding tool is of an integrated structure, and the free end of each support rod is connected with the rigid binding tool;
welding a welding seam between the support rod and the support rod mounting hole, selecting a second position support rod which is farthest away from the support rod as a next welding support rod after the first position support rod is welded, and selecting a third position support rod which is farthest away from the second position support rod from the rest unwelded support rods as a next welding support rod when the welding seam between the support rod and the support rod mounting hole is welded; and so on until all the support rods are welded;
carrying out annealing treatment after welding; the connection between the rigid binding tool and the free end of the support rod is still kept in the annealing process.
2. The method as claimed in claim 1, wherein the assembling gaps between the struts and the strut mounting holes are uniform, and the deviation between the assembling gaps of the struts does not exceed a predetermined value.
3. The method as claimed in claim 1, wherein the rigid tie down means is a linear or circular structure according to the arrangement of the brace bars, wherein the circular structure is triangular, polygonal or circular.
4. The method of forming a strut assembly in an end beam structure of a straddle truck according to claim 1, further comprising, after the annealing step:
performing shot blasting treatment on the surfaces of the support rod and the first seat plate;
after the shot blasting is finished, assembling and welding grinding of the pinch plate and the first seat plate are carried out;
and after welding and grinding are finished, taking down the rigid binding tool.
5. The method of manufacturing a set of spacers in an end beam structure of a straddle truck according to claim 1, further comprising: the free end of the support rod is welded with the second seat plate;
before the free end of the support rod is welded with the second seat plate, the deformation direction and the deformation amount of the support rod are detected;
when the free end of the support rod is welded with the second seat plate, the side opposite to the deformation direction of the support rod is welded preferentially.
6. The method of claim 1, wherein the welding of the single strut divides the girth weld into two sections.
7. The method of claim 1, wherein during welding of the individual struts, a wind blade is used to impact the weld after each weld is completed.
8. A method of machining a straddle truck end beam assembly, comprising: a method of manufacturing a strut assembly according to any one of claims 1 to 7 in a straddle truck end beam structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010535709.7A CN111822947B (en) | 2020-06-12 | 2020-06-12 | Machining method for stay bar assembly in straddle bogie end beam structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010535709.7A CN111822947B (en) | 2020-06-12 | 2020-06-12 | Machining method for stay bar assembly in straddle bogie end beam structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111822947A CN111822947A (en) | 2020-10-27 |
| CN111822947B true CN111822947B (en) | 2021-11-30 |
Family
ID=72899208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010535709.7A Active CN111822947B (en) | 2020-06-12 | 2020-06-12 | Machining method for stay bar assembly in straddle bogie end beam structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111822947B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686793Y (en) * | 2004-04-04 | 2005-03-23 | 万向钱潮股份有限公司 | Oil pipe support welding technological equipment |
| KR20120104654A (en) * | 2011-03-14 | 2012-09-24 | 권승자 | Guide wheel unit of mono rail for y type |
| CN106181099A (en) * | 2016-08-09 | 2016-12-07 | 任丘市金狮焊机制造有限公司 | Scaffold upright rod automatic welding device |
| CN106493501A (en) * | 2016-10-31 | 2017-03-15 | 亿和精密工业（苏州）有限公司 | Pipe fitting welding tool and welding method |
| CN108725702A (en) * | 2018-08-06 | 2018-11-02 | 扬州中远海运重工有限公司 | A kind of container ship lashing bridge is only shaken structure |
| CN208811391U (en) * | 2018-09-13 | 2019-05-03 | 浙江麒龙起重机械有限公司 | Trolley end carriage bent plate welds positioning tool |
| CN110228491A (en) * | 2019-06-21 | 2019-09-13 | 中车青岛四方机车车辆股份有限公司 | End-beam arrangement, bogie and rail vehicle with the end-beam arrangement |
-
2020
- 2020-06-12 CN CN202010535709.7A patent/CN111822947B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2686793Y (en) * | 2004-04-04 | 2005-03-23 | 万向钱潮股份有限公司 | Oil pipe support welding technological equipment |
| KR20120104654A (en) * | 2011-03-14 | 2012-09-24 | 권승자 | Guide wheel unit of mono rail for y type |
| CN106181099A (en) * | 2016-08-09 | 2016-12-07 | 任丘市金狮焊机制造有限公司 | Scaffold upright rod automatic welding device |
| CN106493501A (en) * | 2016-10-31 | 2017-03-15 | 亿和精密工业（苏州）有限公司 | Pipe fitting welding tool and welding method |
| CN108725702A (en) * | 2018-08-06 | 2018-11-02 | 扬州中远海运重工有限公司 | A kind of container ship lashing bridge is only shaken structure |
| CN208811391U (en) * | 2018-09-13 | 2019-05-03 | 浙江麒龙起重机械有限公司 | Trolley end carriage bent plate welds positioning tool |
| CN110228491A (en) * | 2019-06-21 | 2019-09-13 | 中车青岛四方机车车辆股份有限公司 | End-beam arrangement, bogie and rail vehicle with the end-beam arrangement |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111822947A (en) | 2020-10-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| USRE47904E1 (en) | Method for laser welding one or more workpieces of hardenable steel in a butt joint | |
| CN104175014B (en) | A kind of for large thin-wall component accurate welding shaped device and precision machining method | |
| CN103084703B (en) | A kind of large-scale interior empty steel-casting mends built-up welding reproducing method by replacing a damaged part | |
| CN102029473B (en) | Aerological welding method of steel sleeve | |
| CN102861973B (en) | Roof steel structure manufacturing technique of railway vehicles | |
| CN106271145B (en) | Subway aluminium alloy car roof side-beam welding procedure | |
| CN100581717C (en) | Technique of hot rolled plate and linear cooling bed for manufacturing trolley track girder | |
| CN102500660A (en) | Integral correction device for long and thin beam structure and correction method | |
| CN111822947B (en) | Machining method for stay bar assembly in straddle bogie end beam structure | |
| CN107877093B (en) | Curved surface plate machining tool and machining method | |
| CN109794725B (en) | Positioning tire for welding large-sized frame and welding process method | |
| CN112935480B (en) | Repairing process for surface abrasion of large wheel fixing table base | |
| CN110860768B (en) | Welding process for large beam rail bearing beam and square steel rail of track crane | |
| CN102069310B (en) | Method for controlling welding curved surface deformation of cab of railway vehicle | |
| CN210849041U (en) | Piston rod surface cladding spiral welding repair equipment | |
| CN201151619Y (en) | Wheel bearing housing for crane | |
| CN102528236A (en) | Welding method and welding jig for pile leg single-face rack | |
| CN105235747A (en) | Self-discharging vehicle frame assembly production technology for mine | |
| CN101439434A (en) | High intensity alloyed steel traction pin and welding process of foundation | |
| CN204173042U (en) | Automobile accessory frame and main car frame installation positioning tool | |
| CN212145068U (en) | Automatic welding equipment with vibration strengthening function | |
| CN104477275A (en) | Automobile auxiliary frame positioning method | |
| CN107513936B (en) | Upper-shaped side girder structure and manufacturing method | |
| CN215032490U (en) | A transfer and repair frock for high-speed railway car body welded part | |
| CN217942402U (en) | Rotatory frock that shifts of aluminum alloy automobile body plate beam structure assembly welding spare |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |