CN109060366B - Tool and method for detecting auxiliary frame of bogie - Google Patents
Tool and method for detecting auxiliary frame of bogie Download PDFInfo
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- CN109060366B CN109060366B CN201810503355.0A CN201810503355A CN109060366B CN 109060366 B CN109060366 B CN 109060366B CN 201810503355 A CN201810503355 A CN 201810503355A CN 109060366 B CN109060366 B CN 109060366B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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Abstract
The invention provides a detection tool and a detection method for a bogie subframe, belonging to the technical field of vehicle quality detection, wherein the detection tool comprises a support bottom plate provided with two supports I and two supports II, and the detection method comprises the following steps: four bearing saddles in the auxiliary framework assembly are correspondingly arranged on the four supporting tables, and the middle part supports the U-shaped end of the three-support auxiliary framework; whether the quality of the product formed by the auxiliary framework is qualified or not is judged according to whether the four bearing saddles can be completely matched with the four supporting tables or not; the first supports are fixed on the supporting base plate, and an adjusting mechanism for adjusting the distance and the angle between the second supports and the first supports is arranged between the second supports and the supporting base plate to simulate the real state of the auxiliary framework composition in the process of forming and using the bogie, so that the production quality of the auxiliary framework composition is guaranteed, and the problem that related data cannot be detected by adopting a basic measuring method is solved; the problem that the product quality is unqualified due to the accumulated error of the traditional measuring method is solved; the working efficiency and the economic benefit are improved.
Description
Technical Field
The invention belongs to the technical field of vehicle quality detection, and particularly relates to a tool and a method for detecting a bogie subframe.
Background
The auxiliary frame used by the bogie is formed into a plate assembly welding structure, and in the manufacturing process, the structure is relatively complex, the welding amount is large, the deformation of the manufactured and processed auxiliary frame is large, and the welding deformation caused by the reason can cause that part of auxiliary frame products are unqualified in quality or the condition that the bogie falls into a finished product and is assembled cannot be met. The structure of the auxiliary frame bogie is complex, the assembly process is difficult, and the required working hours are more; if the quality of the finished selected auxiliary frame product cannot be guaranteed to be unqualified, secondary or multiple reworking can occur, so that the finishing efficiency of the bogie is reduced, the working hours are wasted, and the qualification rate of the auxiliary frame is also sharply reduced; the traditional quality detection method for the subframe composition is long in detection time and incapable of detecting and confirming errors caused by integral welding deformation.
Disclosure of Invention
The invention aims to provide a bogie subframe detection tool and a bogie subframe detection method, and aims to solve the technical problems that in the prior art, the traditional subframe detection equipment is long in time consumption and cannot detect errors caused by integral welding deformation.
In order to achieve the purpose, the invention adopts the technical scheme that: the detection tool for the auxiliary frame of the bogie comprises a support bottom plate, wherein two first supports and two second supports are arranged on the support bottom plate, connecting shafts are respectively arranged between the two first support supporting tables and the two second support supporting tables, and the connecting shafts are rigidly connected with inner holes of the supporting tables; the two connecting shafts are arranged on two sides of the supporting bottom plate in parallel, supporting tables for supporting four bearing saddles in the auxiliary framework assembly are correspondingly arranged at the tops of the first support and the second support, and the size of the supporting tables is matched with that of a bearing saddle interface in the auxiliary framework assembly to be detected; the first supports are fixedly arranged on the support bottom plate, and an adjusting mechanism for adjusting the distance and the angle between the second supports and the first supports is arranged between the second supports and the support bottom plate; and a third support for supporting the U-shaped end of the auxiliary framework is arranged in the middle of the support bottom plate.
Further, the supporting table is a tubular cylinder, and the connecting shaft is rigidly connected with an inner hole of the supporting table.
Furthermore, the adjusting mechanism comprises a pin shaft and a connecting plate, the two supports are arranged on the connecting plate, the pin shaft is vertically fixed on the support base plate, a long round hole matched with the pin shaft is formed in the connecting plate, the width of the long round hole is consistent with the diameter of the pin shaft, and the length direction of the long round hole is perpendicular to the connecting line of the two supports.
Furthermore, a through hole matched with the pin shaft is formed in the supporting base plate, and the pin shaft is fixed in the through hole in a welding mode.
Further, the top of the third support is provided with a bearing which is in contact with the sub-framework assembly.
Furthermore, the bottom of the supporting bottom plate is provided with a first base.
Furthermore, the first bases are two and are correspondingly arranged below the first supports and the second supports on the same side.
Further, a second base is arranged between the first two bases.
Further, the height difference between the first support and the second support is 14 mm.
The invention also provides a detection method of the bogie subframe, which comprises the following steps:
the auxiliary framework assembly is erected on the bogie auxiliary framework detection tool, four bearing saddles in the auxiliary framework assembly are correspondingly erected on four supporting tables, and the U-shaped end of the auxiliary framework is erected on the third supporting table;
if the four bearing saddles in the secondary framework composition cannot be completely matched with the four supporting tables and fall, the quality of the product formed by the secondary framework composition is unqualified;
and (III) if four bearing saddles in the secondary framework composition can be completely matched with the four supporting tables and fall into the secondary framework composition, enabling the two supporting tables above the two supporting tables to rotate relative to the supporting bottom plate through the adjusting mechanism, and under any working condition in the rotating process, enabling the central line difference and the journal diagonal difference of the two supporting tables at the same side to meet the technical requirements to ensure that the product quality of the secondary framework composition is qualified, otherwise, enabling the product quality of the secondary framework composition to be unqualified.
The tool and the method for detecting the auxiliary frame of the bogie have the beneficial effects that: compared with the prior art, the two supports I and the two supports II in the bogie auxiliary frame detection tool can be matched with the four bearing saddles in the auxiliary frame assembly, and the distance and the angle between the two supports II and the two supports I are adjusted by the aid of the adjusting mechanism to simulate the real working state of the auxiliary frame assembly in the process of forming and using the bogie, so that the quality detection work requirement in the batch production process of the bogie auxiliary frame assembly is realized, the production quality of the auxiliary frame assembly is powerfully guaranteed, and the overall quality unqualified bogie complicated by the quality problem of accessories is avoided; the problem that the related data cannot be detected by adopting a basic measurement method is solved; the problem that the product quality is unqualified due to the accumulation of errors generated by the traditional measuring method is solved; meanwhile, the production, manufacturing and detection working efficiency of the product is improved, the working hours are saved, and the economic benefit is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a front view of a bogie subframe detection tool provided in an embodiment of the invention;
FIG. 2 is a top view of a bogie subframe detection tool provided in an embodiment of the invention;
3 FIG. 3 3 3 is 3 a 3 cross 3- 3 sectional 3 view 3 A 3- 3 A 3 of 3 FIG. 3 2 3; 3
FIG. 4 is an enlarged view of a portion of FIG. 2 at B;
FIG. 5 is a diagram illustrating a usage status of the tool for detecting a bogie subframe according to the embodiment of the present invention;
wherein, in the figures, the respective reference numerals:
1-a support bottom plate, 2-a support I, 3-a support II, 4-an auxiliary framework, 40-a bearing saddle, 41-an auxiliary framework U-shaped end; 5-supporting table, 6-connecting shaft, 7-pin shaft, 8-connecting plate, 9-long circular hole, 10-supporting third, 11-base first and 12-base second.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.
It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, as used herein, refer to an orientation or positional relationship indicated in the drawings that is solely for the purpose of facilitating the description and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and is therefore not to be construed as limiting the invention.
In addition, in the description of the present invention, "a plurality" or "a plurality" means two or more unless specifically defined otherwise.
Referring to fig. 1, fig. 2 and fig. 5, the tool for detecting the bogie subframe according to the present invention will now be described. The bogie auxiliary framework detection tool comprises a support base plate 1, wherein two supports I2 and two supports II 3 are arranged on the support base plate 1, a connecting shaft 6 is respectively arranged between the two support platforms 5 of the support I2 and the two support platforms 5 of the support II 3, and the connecting shaft 6 is rigidly connected with an inner hole of the support platform 5; the two connecting shafts 6 are arranged on two sides of the supporting bottom plate 1 in parallel, supporting tables 5 for supporting four bearing saddles 40 in the auxiliary framework assembly 4 are correspondingly arranged at the tops of the first support 2 and the second support 3, and the size of the bearing saddle interfaces in the supporting tables 5 is matched with that of the bearing saddles in the auxiliary framework assembly to be detected; the middle part of the supporting bottom plate 1 is provided with a third support 10 for supporting the U-shaped end 41 of the auxiliary framework; the first supports 2 are fixedly arranged on the support base plate 1, and adjusting mechanisms for adjusting the distance and the angle between the second supports 3 and the first supports 2 are arranged between the second supports 3 and the support base plate 1. And hoisting the assembled auxiliary framework assembly to the four supporting tables, and enabling the two supporting tables above the two supports to rotate relative to the supporting bottom plate through the adjusting mechanism to detect whether the quality of the product formed by the auxiliary framework assembly is qualified.
Compared with the prior art, the bogie subframe detection tool has the advantages of simple structure, convenience in operation and high detection efficiency, can simulate the real working state of a subframe composition in the process of forming and using a bogie, realizes the quality detection work requirement in the batch production process of the bogie subframe composition, provides powerful guarantee for the production quality of the subframe composition, and avoids the unqualified overall quality of the bogie complicated by the quality problem of accessories; the problem that the related data cannot be detected by adopting a basic measurement method is solved; the problem that the product quality is unqualified due to the accumulation of errors generated by the traditional measuring method is solved; meanwhile, the production, manufacturing and detection working efficiency of the product is improved, the working hours are saved, and the economic benefit is improved. The invention thoroughly avoids the phenomena that the rework workload is increased sharply, the production efficiency is reduced and the labor cost is increased sharply due to the fact that defective goods flow into the next process because of unreasonable detection method and detection equipment.
Further, referring to fig. 1-2 together, as a specific embodiment of the tool for detecting a bogie subframe provided by the present invention, the supporting platform 5 is a tubular cylinder, and an inner hole of the supporting platform 5 is rigidly connected to the connecting shaft 6.
Further, referring to fig. 1-4 together, as a specific embodiment of the bogie auxiliary frame detection tool provided by the present invention, the adjusting mechanism includes a pin 7 and a connecting plate 8, the two support pairs 3 are disposed on the connecting plate 8, the pin 7 is vertically fixed on the support base plate 1, the connecting plate 8 is provided with a long circular hole 9 matched with the pin 7, the width of the long circular hole 9 is consistent with the diameter of the pin 7, and the length direction of the long circular hole 9 is perpendicular to the connecting line of the two support pairs 3. The distance between the two connecting shafts can be determined according to the overall technical conditions of different bogies by utilizing the long round holes.
Further, as a specific embodiment of the bogie subframe detection tool provided by the invention, a through hole matched with the pin shaft 7 is formed in the support base plate 1, and the pin shaft 7 is welded and fixed in the through hole. The supporting baseplate is made of a steel plate with the thickness of 25mm, the through hole is phi 50mm, the pin shaft is assembled and welded in the phi 50mm round hole, and the welding seam is arranged on the lower portion of the supporting baseplate 1.
Further, as a specific embodiment of the bogie subframe detection tool provided by the invention, a bearing in contact with the subframe assembly 4 is arranged at the top of the support three 10. The resistance generated by friction when the auxiliary framework component rotates is overcome.
Further, referring to fig. 1 to 3 together, as a specific embodiment of the tool for detecting a bogie subframe provided by the present invention, a base 11 is disposed at the bottom of the supporting base plate 1. A supporting bottom plate is lifted by a certain height through a first base, so that the supporting bottom plate is prevented from being directly placed on the ground or a workbench, the carrying or the displacement is inconvenient, and the strength and the rigidity of the detection tool are improved.
Further, referring to fig. 1 to 3 together, as an embodiment of the tool for detecting a bogie subframe provided by the present invention, the first base 11 is two and is correspondingly disposed below the first support 2 and the second support 3 on the same side. This structure simple manufacture, two bases correspond the vice framework of support top and constitute, improve the bulk rigidity, the intensity that detect the frock, avoid the detection mistake that the deformation of the frock itself in the use brought, easily keep balance, convenient transport simultaneously.
Further, referring to fig. 1, as a specific embodiment of the tool for detecting the bogie subframe provided by the present invention, a second base 12 is disposed between two first bases 11, and two third supports 10 are correspondingly disposed above the second base 12.
Further, as a specific embodiment of the bogie subframe detection tool provided by the invention, the first base 11 and the second base 12 are both steel pipes with rectangular cross sections.
When the base is manufactured, the base I is formed by butt joint of 2 (100 multiplied by 48 multiplied by 5.3) mm channel steels with the length of 2400mm in an opening-to-opening mode. The second base is formed by butt joint of 1 (100 multiplied by 48 multiplied by 5.3) mm channel steel with the length of 1720mm in a mouth-to-mouth mode. The supporting bottom plate is assembled and welded by steel plates with the thickness of 25mm and through holes with the diameter of 50mm, and the welding mode is section welding. The connecting plate is provided with a long round hole with the thickness of 14mm and the thickness of 70 x 50 mm; the diameter and the width of the supporting table are matched with the size of a bearing saddle joint in the secondary framework to be detected, and the two supporting tables are in a group and are connected through a connecting shaft with the diameter of 100 multiplied by 4 mm; the first support and the second support are made of square steel tubes (100 multiplied by 48 multiplied by 5.3) mm with the same diameter as the support platform, arc parts between the first support and the second support are welded in a matched mode, and the height difference between the first support and the second support is controlled to be 14 mm; the lower end of the first support is welded with a support bottom plate with the thickness of 25mm in an assembling mode; the lower end of the second support is welded with the connecting plate in an assembling way; the pin shaft is assembled and welded to a through hole with the diameter of phi 50mm on a support bottom plate of a steel plate with the thickness of 25mm, and a welding seam is arranged at the lower part of the steel plate; the pin shaft falls into a long round hole (70 multiplied by 50) mm on the connecting plate; two (50 multiplied by 5) mm square steel pipes are arranged in the middle of the supporting bottom plate and used as three supporting U-shaped ends for supporting the auxiliary framework.
Further, as a specific implementation mode of the bogie subframe detection tool provided by the invention, the height difference between the first support 2 and the second support 3 is 14 mm.
The invention also provides a detection method of the bogie subframe, which comprises the following steps:
the auxiliary framework assembly is erected on the bogie auxiliary framework detection tool, four bearing saddles in the auxiliary framework assembly are correspondingly erected on four supporting tables, and the U-shaped end of the auxiliary framework is erected on the third supporting table;
if the four bearing saddles in the secondary framework composition cannot be completely matched with the four supporting tables and fall, the quality of the product formed by the secondary framework composition is unqualified;
and (III) if four bearing saddles in the secondary framework composition can be completely matched with the four supporting tables and fall into the secondary framework composition, enabling the two supporting tables above the two supporting tables to rotate relative to the supporting bottom plate through the adjusting mechanism, and under any working condition in the rotating process, enabling the central line difference and the journal diagonal difference of the two supporting tables at the same side to meet the technical requirements to ensure that the product quality of the secondary framework composition is qualified, otherwise, enabling the product quality of the secondary framework composition to be unqualified.
In a specific detection embodiment of the invention, the assembled sub-framework assembly is hoisted to the tool, and 4 bearing saddles in the sub-framework assembly are matched with 4 supporting tables in the tool. If 4 bearing saddles in the secondary framework composition cannot be completely matched with 4 supporting tables in the tool, the quality of the product formed by the secondary framework composition is unqualified; if 4 bearing saddles in the auxiliary framework assembly can be completely matched with 4 supporting tables in the tool, the connecting plate is rotated by taking the pin shaft as the circle center, under any working condition in the rotating process, the central line difference and the journal diagonal difference of the two supporting tables at the same side in the vertical direction of the connecting shaft need to meet the regulation of technical conditions, the connecting plate needs to be ensured to rotate flexibly, and otherwise, the product quality of the auxiliary framework assembly is unqualified.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. Vice framework of bogie detects frock, its characterized in that: the support device comprises a support bottom plate, wherein two first supports and two second supports are arranged on the support bottom plate, connecting shafts are respectively arranged between the two first support supporting tables and the two second support supporting tables, and the connecting shafts are rigidly connected with inner holes of the first support supporting tables; the two connecting shafts are arranged on two sides of the supporting bottom plate in parallel, supporting tables for supporting four bearing saddles in the auxiliary framework assembly are correspondingly arranged at the tops of the first support and the second support, and the size of the supporting tables is matched with that of a bearing saddle interface in the auxiliary framework assembly to be detected; the first supports are fixedly arranged on the support bottom plate, and an adjusting mechanism for adjusting the distance and the angle between the second supports and the first supports is arranged between the second supports and the support bottom plate; a third support for supporting the U-shaped end of the auxiliary framework is arranged in the middle of the support bottom plate;
the adjusting mechanism comprises a pin shaft and a connecting plate, the two supports are arranged on the connecting plate, the pin shaft is vertically fixed on the support bottom plate, a long round hole matched with the pin shaft is formed in the connecting plate, the width of the long round hole is consistent with the diameter of the pin shaft, and the length direction of the long round hole is perpendicular to the connecting line of the two supports.
2. The bogie subframe detection tool of claim 1, wherein: the supporting table is a tubular cylinder, and the connecting shaft is rigidly connected with an inner hole of the supporting table.
3. The bogie subframe detection tool of claim 1, wherein: the supporting base plate is provided with a through hole matched with the pin shaft, and the pin shaft is welded and fixed in the through hole.
4. The bogie subframe detection tool of claim 1, wherein: and a bearing in contact with the auxiliary framework is arranged at the top of the support III.
5. The bogie subframe detection tool of claim 1, wherein: the bottom of the supporting bottom plate is provided with a first base.
6. The bogie subframe detection tool of claim 5, wherein: the first bases are two and are correspondingly arranged below the first supports and the second supports on the same side.
7. The bogie subframe detection tool of claim 6, wherein: and a second base is arranged between the two first bases.
8. The bogie subframe detection tool according to any one of claims 1 to 7, wherein: the height difference between the first support and the second support is 14 mm.
9. A bogie subframe detection method is characterized by comprising the following steps:
the auxiliary framework assembly is erected on the bogie auxiliary framework detection tool as claimed in claim 8, four bearing saddles in the auxiliary framework assembly are correspondingly erected on four supporting tables, and the U-shaped end of the auxiliary framework is erected on the third supporting table;
if the four bearing saddles in the secondary framework composition cannot be completely matched with the four supporting tables and fall, the quality of the product formed by the secondary framework composition is unqualified;
and (III) if four bearing saddles in the secondary framework composition can be completely matched with the four supporting tables and fall into the secondary framework composition, enabling the two supporting tables above the two supporting tables to rotate relative to the supporting bottom plate through the adjusting mechanism, and under any working condition in the rotating process, enabling the central line difference and the journal diagonal difference of the two supporting tables at the same side to meet the technical requirements to ensure that the product quality of the secondary framework composition is qualified, otherwise, enabling the product quality of the secondary framework composition to be unqualified.
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2536463Y (en) * | 2002-05-09 | 2003-02-19 | 同济大学 | Right measuring device for wagon bogie with cross support |
CN202048901U (en) * | 2011-01-01 | 2011-11-23 | 齐齐哈尔轨道交通装备有限责任公司 | Normal position detecting system of bogie |
CN103543023A (en) * | 2013-11-02 | 2014-01-29 | 南车眉山车辆有限公司 | Device for testing reliability of secondary frames of bogie |
CN104482893A (en) * | 2014-11-07 | 2015-04-01 | 南车长江车辆有限公司 | Detection method for cross structure bogie |
CN104923592A (en) * | 2015-05-28 | 2015-09-23 | 长春轨道客车股份有限公司 | Bogie side beam torsion detection adjustment device and method |
-
2018
- 2018-05-23 CN CN201810503355.0A patent/CN109060366B/en active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN2536463Y (en) * | 2002-05-09 | 2003-02-19 | 同济大学 | Right measuring device for wagon bogie with cross support |
CN202048901U (en) * | 2011-01-01 | 2011-11-23 | 齐齐哈尔轨道交通装备有限责任公司 | Normal position detecting system of bogie |
CN103543023A (en) * | 2013-11-02 | 2014-01-29 | 南车眉山车辆有限公司 | Device for testing reliability of secondary frames of bogie |
CN104482893A (en) * | 2014-11-07 | 2015-04-01 | 南车长江车辆有限公司 | Detection method for cross structure bogie |
CN104923592A (en) * | 2015-05-28 | 2015-09-23 | 长春轨道客车股份有限公司 | Bogie side beam torsion detection adjustment device and method |
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