CN102501872A - Bogie auxiliary framework of railway wagon and production technology thereof - Google Patents

Bogie auxiliary framework of railway wagon and production technology thereof Download PDF

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Publication number
CN102501872A
CN102501872A CN2011103370308A CN201110337030A CN102501872A CN 102501872 A CN102501872 A CN 102501872A CN 2011103370308 A CN2011103370308 A CN 2011103370308A CN 201110337030 A CN201110337030 A CN 201110337030A CN 102501872 A CN102501872 A CN 102501872A
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CN
China
Prior art keywords
saddle
welding
arm
framework
weld
Prior art date
Application number
CN2011103370308A
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Chinese (zh)
Inventor
王汉青
刘成勇
杨鸣
张庆良
方南京
张学云
姚毅
邹建美
方保宁
Original Assignee
南车眉山车辆有限公司
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Application filed by 南车眉山车辆有限公司 filed Critical 南车眉山车辆有限公司
Priority to CN2011103370308A priority Critical patent/CN102501872A/en
Publication of CN102501872A publication Critical patent/CN102501872A/en

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Abstract

The invention discloses a bogie auxiliary framework of a railway wagon and production technology thereof. The bogie auxiliary framework is formed by split structures including a left saddle, a right saddle and an arm for connecting the left saddle and the right saddle. The left saddle, the right saddle and the arm are connected into a whole through welding, and welding connection positions are respectively located at a left saddle connection rod straight line section and a right saddle connection rod straight line section. The production technology comprises the following steps of respectively performing casting processing on the left saddle, the right saddle and the arm; performing welding groove processing on the left saddle, the right saddle and the arm; assembling the left saddle and the arm, and assembling the right saddle and the arm; performing positioned welding; performing layered welding; polishing welding joints, performing flaw detection and removing stress; integrally processing a saddle surface, drilling holes and reaming holes; and pressing a sleeve. The bogie auxiliary framework of the railway wagon and the production technology of the bogie auxiliary framework utilize combination of the split structures, spin-off structures are scientific, a combination welding method can effectively guarantee quality requirements of all portions of the auxiliary framework and reduce casting manufacture difficulty, machining difficulty and machining cost, and the quality of the butt welding technology of the saddles and the arm of the auxiliary framework is excellent.

Description

Secondary framework of a kind of railway goods train bogie and production technology thereof

Technical field

The invention belongs to machine design and make the field, especially belong to the railway truck member designs and make the field, particularly secondary framework structure of railway goods train bogie and production technology thereof.

Background technology

Secondary framework is the major part of railway truck auxiliary frame work steering frame, is the major technique characteristics that the type bogie truck is different from other various roller bearing adapter stabilizer bar, also is the main parts that embody this type bogie truck performance characteristics.Secondary framework oad is bigger, and space structure is complicated, and both ends are saddle type structure and the middle part is long-armed cavity structure, and whole manufacture difficulty is too big, is difficult to guarantee to cast the requirement with machine up.

The secondary framework of bogie truck is a primary structure member; Its structural strength relates to the safety of overall vehicle; Adopt and divide its split mode of body structure and its bulk strength of welding manner direct relation and safety, also be the problem that the secondary frame design manufacturing of bogie truck is explored and studied all the time.

Summary of the invention

The present invention discloses secondary framework of a kind of railway goods train bogie and production technology thereof according to the deficiency of prior art; The problem that the present invention will solve provides a kind of split type; And it is rational in infrastructure to break; Combined welding method can effectively guarantee the requirements for quality at each position of secondary framework, realizes secondary framework structure of bogie truck and production technology thereof that secondary framework is made smoothly.

The present invention realizes through following technical scheme:

The secondary framework of railway goods train bogie; The secondary framework of said bogie truck is made up of left saddle, right saddle and the arm that is connected left side saddle and right saddle; Wherein: left saddle, right saddle and the arm that is connected a left side saddle and right saddle are the branch body structures; Left side saddle is whole through being welded to connect with arm with right saddle, and the place of being welded to connect is positioned at left saddle and right saddle pipe link linear portion respectively.

The secondary framework production technology of railway goods train bogie comprises the steps:

A. left saddle, right saddle and arm be casting processing respectively;

B. left saddle, right saddle and the processing of arm bevel for welding;

C. left saddle and right saddle and arm group are right;

D. tack welding;

E. layering weldering;

F. weld grinding, defect detecting test and destressing;

G. the whole processing saddle face and the hole that drills and reams;

H. gland.

Further above-mentioned left saddle, right saddle and arm bevel for welding are processed into the bevel for welding of 30 degree respectively, and each groove has the root face of 1-2mm.

The joint of left side saddle or right saddle and arm has the gap of 1-2mm when further above-mentioned left saddle and right saddle and arm welding.

Further said tack welding adopts the weldering of 6 point locations, and carries out according to sequence of welding; Said sequence of welding is by the welding of following order, earlier welding upper end weld nugget, weld lower end weld nugget, upper left weld nugget, bottom right weld nugget, upper right weld nugget, welding left side weld nugget down at last successively.

Three layers of welding are adopted in further said layering weldering, and said three layers of welding are that the ground floor weld seam is the bottom weld seam, are one weld seam, and second layer weld seam is the twice weld seam, and the 3rd layer of weld seam is three road weld seams.

Mixed gas welding is adopted in further said welding, and mixture gas is the Ar of volume ratio 80% and 20% CO 2Miscellaneous gas, the JM-50C6 welding wire, gage of wire 1.2mm, welding current 240-280A, voltage 25-30V, shield gas flow rate are 20-25L/min, welding speed 200-300mm/min.

The secondary framework that the present invention is bigger with overall dimensions is divided into left saddle, right saddle, three sub-units of intermediate arm; Cast respectively, process; With forcing the welding frock that these three sub-units are welded as a whole, last integral body is processed two adapter faces and pipe link hinge hole then.

According to secondary framework structure stress amplitude cloud atlas and to secondary airframe dymanics analysis; Through discovering that secondary framework structure is in left saddle and right saddle and intermediate arm bonded assembly left side saddle and the stressed minimum of right saddle linear portion, above-mentioned left saddle and the stressed minimum of right saddle linear portion in the vehicle operating process.In the minimum position segmentation of secondary framework structure stress, be divided into left saddle, right saddle and arm three parts, after each several part split casting, the processing, adopt the butt welding mode to weld, its safety is the highest.

In order to guarantee the intensity of weld seam, be processed into the bevel for welding of 30 degree at the welding assembly of saddle, arm, each groove keeps the root face of 1-2mm.Soldering group to the time saddle, arm joint to keep the gap of 1-2mm, guarantee the fully groove of through welding saddle and arm of weld seam.

The group of saddle and arm to the time, according to the intermediate arm of the distance apolegamy appropriate length between left saddle and the right saddle bevel for welding, can reduce the magnitude of misalignment of butt weld, improve the smoothness of weld seam inner chamber.

After the welding of saddle, arm, wrap up the welding assembly of secondary framework with asbestos cloth, force on the welding tooling slow cooling after 1 hour again pine unload workpiece, continue to carry out again below air cooling to 50 degree polishing transition of weld seam, can effectively reduce welding deformation.

Adopt the secondary framework structure quality of bogie truck of the present invention to be guaranteed: to adopt the present invention to divide body structure and manufacturing process, 2 meters large complicated foundry goods how long are converted into medium-sized saddle with arm is cast respectively, can effectively control foundry defect, the assurance casting quality.

Welding method of the present invention is effectively guaranteed the weld strength of welding.Saddle, arm adopt the beveling of the edge butt welding, group to the time keep certain clearance, the apolegamy control group through arm effectively guarantees weldquality and weld strength to the shift amount.

Equipment is simple, reduces manufacturing cost: split adds can adopt common apparatus such as boring machine and milling machine processing saddle and arm man-hour, and need not to use large-scale boring-mill work central apparatus.

In sum, secondary framework structure of bogie truck of the present invention and split manufacturing process thereof are bigger with oad; Length is above 2 meters; Space structure complicacy and rigidity is not enough is difficult to carry out secondary framework made in one piece, be divided into two saddles and one elongated arm cast respectively and process; Carry out assembly welding at last and become as a whole, the present invention has following advantage.

1. reduce the foundry goods manufacture difficulty, improve the internal quality of casting and spatial shape quality.Because the foundry goods oad is bigger, be U type dumbbell structure, so the casting distortion is very big, and foundry defects such as burning into sand, shrinkage cavity, crackle are many, are difficult to guarantee casting quality.

2. minimizing mechanical processing difficulty cuts down finished cost.As adopt mono-block cast processing, and then needing large-scale boring-mill work equipment, and dispose large-scale special tooling, processing efficient is low, and productive costs is very high.

3. control secondary framework saddle and arm butt welding welding quality, guarantee the weld strength of secondary framework.At the butt welding position of split saddle and split arm, the bevel for welding of processing 30 degree has effectively guaranteed weld strength.

4. according to secondary framework structure stress amplitude cloud atlas and to secondary airframe dymanics analysis; Through discovering that secondary framework structure is in left saddle and right saddle and intermediate arm bonded assembly left side saddle and the stressed minimum of right saddle linear portion; Above-mentioned left saddle and the stressed minimum of right saddle linear portion in the vehicle operating process, satisfying vehicle stressed is operating needs.

5. split manufacturing process is that the manufacturing of similar structures parts provides a kind of new manufacturing process thinking.

Description of drawings

Fig. 1 is the secondary framework structure plan sketch of the present invention;

Fig. 2 is the right TV structure scheme drawing of the secondary framework structure of the present invention;

Fig. 3 is soldered schematic cross-section of the present invention and tack welding sequential schematic;

Fig. 4 is the right saddle Facad structure of a present invention scheme drawing;

Fig. 5 is the right saddle plan structure of a present invention scheme drawing;

Fig. 6 is an arm planar structure scheme drawing of the present invention;

Fig. 7 is that Fig. 6 looks up the local structure scheme drawing;

Fig. 8 is the right TV structure scheme drawing of Fig. 6;

The constitution diagram that Fig. 9 is the secondary framework of the present invention left side saddle, right saddle and arm group when being fixed on the welding fixed mount;

Figure 10 is the secondary framework structure stress amplitude of a U-shaped cloud atlas; Pull bar power ± 42KN;

Figure 11 is the secondary framework structure stress amplitude of a U-shaped cloud atlas; Rubber metal pad cushion cap vertical load;

Among the figure, the 1st, left saddle, the 2nd, arm, the 3rd, right saddle; The 4th, soldered, the 4.1st, upper end weld nugget, the 4.2nd, lower end weld nugget, the 4.3rd, upper left weld nugget; 4.4 be the bottom right weld nugget, the 4.5th, upper right weld nugget, the 4.6th, a left side is weld nugget down, and 4a is the bevel for welding and the root face of left saddle or right saddle; 4b is the bevel for welding and the root face of arm, the 5th, and arm locating piece, the 6th, welding fixed mount frock base plate, the 7th, saddle locating piece.

The specific embodiment

Below in conjunction with the specific embodiment the present invention is further specified, the specific embodiment is to the further specifying of the principle of the invention, and does not limit the present invention in any way, or similar techniques identical with the present invention all do not exceed the scope of the present invention's protection.

In conjunction with Fig. 1 to Figure 11.

Secondary framework of railway goods train bogie of the present invention and production technology thereof adopt the segmentation casting, split processing, and assembly welding is shaped then, and last processing key characteristic dimension can effectively guarantee the requirements for quality at each position of secondary framework, realizes the manufacturing process of secondary framework smoothly.

Shown in figure 10, Figure 10 is the secondary framework structure stress amplitude of a U-shaped cloud atlas, adopts pull bar power ± 42KN experiment; Can know that at bending section stress be 12.566KN.Shown in figure 11, Figure 11 is the secondary framework structure stress amplitude of a U-shaped cloud atlas, adopts the experiment of rubber metal pad cushion cap vertical load; Can know that at soldered linear portion stress be 0KN.

According to secondary framework structure stress amplitude cloud atlas and to secondary airframe dymanics analysis; Through discovering that secondary framework structure is in left saddle and right saddle and intermediate arm bonded assembly left side saddle and the stressed minimum of right saddle linear portion, above-mentioned left saddle and the stressed minimum of right saddle linear portion in the vehicle operating process.Be chosen in the minimum position segmentation of secondary framework structure stress; With secondary framework be divided into left and right saddle, arm three parts are cast separately, are processed; With forcing the welding frock that saddle, arm are welded, carry out whole machining bearing adapter face and pipe link hinge hole at last.

The secondary framework production technology of railway goods train bogie of the present invention may further comprise the steps: a. left side saddle, right saddle and arm be casting processing respectively; B. left saddle, right saddle and the processing of arm bevel for welding, c. left side saddle and right saddle and arm group are right, the d. tack welding; E. layering weldering; F. weld grinding, defect detecting test and destressing, the whole processing of the g. saddle face and the hole that drills and reams, h. gland.

Saddle, arm split processing: process each position of saddle respectively, keep the whole stock left for machining of 2mm as the saddle face of welding locating surface.

Saddle, arm processing bevel for welding: the welding assembly of saddle, arm is processed into the bevel for welding of 30 degree, and each groove keeps the root face of 1-2mm.

Saddle, arm group are right: earlier with left saddle and right saddle location, levelling; The homonymy cushion cap face of two saddles will be on the sustained height plane, measures the distance between the two saddle bevel for weldings, the intermediate arm of apolegamy appropriate length; Control saddle and arm butt joint magnitude of misalignment, the smoothness of raising weld seam inner chamber.

Saddle, arm tack welding: saddle, arm tack welding adopt the weldering of 6 point locations, tack weld length 15mm, and tack welding will be in a certain order.Earlier welding upper end weld nugget, weld lower end weld nugget, upper left weld nugget, bottom right weld nugget, upper right weld nugget, welding left side weld nugget down at last successively.

Welding process is: the first, carry out the weld seam preheating before the welding, in weld seam periphery 100mm scope with flame heat to the 50-150 degree.The second, adopt mixed gas welding, the JM-50C6 welding wire, gage of wire 1.2mm, welding current 240-280A, voltage 25-30V, shield gas flow rate are 20-25L/min.

Saddle, arm layering weldering: the first, welding is divided into three layers of welding, uses the upset frock that every weld seam is turned to level attitude and carries out downhand welding, and the ground floor weld seam is the bottom weld seam, is one weld seam, and second layer weld seam is the twice weld seam, and the 3rd layer of weld seam is three road weld seams; The second, adopt mixed gas welding, the JM-50C6 welding wire, gage of wire 1.2mm, welding current 240-280A, voltage 25-30V, shield gas flow rate are 20-25L/min, welding speed 200-300mm/min.

Weld grinding and weld seam magnetic particle inspection.

The weld seam destressing.Adopt vibration removal stress or annealing to remove tension type and eliminate secondary framework welding stress.

The whole processing of secondary framework saddle face.Two saddle faces of the secondary framework of fine limit work can effectively guarantee the right alignment requirement of two saddle faces.

Bore, ream gland.Adopt whole drill jig, accomplish boring, fraising.Utilize special-purpose gland device to be pressed into the hinge hole lining.

Adopt this split method of manufacturing technology, can oad is big, secondary framework that space structure is complex-shaped, be divided into saddle and arm and carry out split casting, split processing, integrally welded then, carry out the finishing cut of Critical to quality size.

Claims (7)

1. the secondary framework of a railway goods train bogie; The secondary framework of said bogie truck is made up of left saddle, right saddle and the arm that is connected left side saddle and right saddle; It is characterized in that: left saddle, right saddle and the arm that is connected a left side saddle and right saddle are the branch body structures; Left side saddle is whole through being welded to connect with arm with right saddle, and the place of being welded to connect is positioned at left saddle and right saddle pipe link linear portion respectively.
2. the secondary framework production technology of railway goods train bogie according to claim 1 is characterized in that comprising the steps: a. left side saddle, right saddle and arm casting processing respectively, b. left side saddle, right saddle and the processing of arm bevel for welding; C. left saddle and right saddle and arm group are right; D. tack welding, e. layering weldering, f. weld grinding, defect detecting test and destressing; G. the whole processing saddle face and the hole that drills and reams, the h. gland.
3. the secondary framework production technology of railway goods train bogie according to claim 2, it is characterized in that: said left saddle, right saddle and arm bevel for welding are processed into the bevel for welding of 30 degree respectively, and each groove has the root face of 1-2mm.
4. the secondary framework production technology of railway goods train bogie according to claim 3, it is characterized in that: the joint of left side saddle or right saddle and arm has the gap of 1-2mm when left saddle and right saddle and arm welding.
5. according to the secondary framework production technology of each described railway goods train bogie of claim 2 to 4, it is characterized in that: said tack welding adopts the weldering of 6 point locations, and carries out according to sequence of welding; Said sequence of welding is by the welding of following order, earlier welding upper end weld nugget, weld lower end weld nugget, upper left weld nugget, bottom right weld nugget, upper right weld nugget, welding left side weld nugget down at last successively.
6. according to the secondary framework production technology of each described railway goods train bogie of claim 2 to 4; It is characterized in that: three layers of welding are adopted in said layering weldering; Said three layers of welding are that the ground floor weld seam is the bottom weld seam; Be one weld seam, second layer weld seam is the twice weld seam, and the 3rd layer of weld seam is three road weld seams.
7. according to the secondary framework production technology of each described railway goods train bogie of claim 2 to 4, it is characterized in that: mixed gas welding is adopted in said welding, and mixture gas is the Ar of volume ratio 80% and 20% CO 2, the JM-50C6 welding wire, gage of wire 1.2mm, welding current 240-280A, voltage 25-30V, shield gas flow rate are 20-25L/min, welding speed 200-300mm/min.
CN2011103370308A 2011-10-28 2011-10-28 Bogie auxiliary framework of railway wagon and production technology thereof CN102501872A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN109648271A (en) * 2019-01-24 2019-04-19 江苏瑞铁轨道装备股份有限公司 A kind of side frame assembly welding technique in vehicle to run portion
CN110303296A (en) * 2019-07-02 2019-10-08 浙江开诚机械有限公司 A kind of Sectional Cast organizes cylinder manufacturing method in weldering again
CN111003010A (en) * 2019-12-17 2020-04-14 中车长江铜陵车辆有限公司 Railway freight car bogie block casting type auxiliary framework

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CN202499155U (en) * 2011-10-28 2012-10-24 南车眉山车辆有限公司 Bogie auxiliary framework of railway wagon

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US6910426B2 (en) * 2003-01-31 2005-06-28 Besco Limited Control arm system for steering bogie wheels and axles
CN201961326U (en) * 2011-04-18 2011-09-07 南车眉山车辆有限公司 Top surface supporting type radial bogie
CN202499155U (en) * 2011-10-28 2012-10-24 南车眉山车辆有限公司 Bogie auxiliary framework of railway wagon

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN103543023B (en) * 2013-11-02 2015-08-12 南车眉山车辆有限公司 The secondary framework reliability test of bogie
CN109648271A (en) * 2019-01-24 2019-04-19 江苏瑞铁轨道装备股份有限公司 A kind of side frame assembly welding technique in vehicle to run portion
CN110303296A (en) * 2019-07-02 2019-10-08 浙江开诚机械有限公司 A kind of Sectional Cast organizes cylinder manufacturing method in weldering again
CN111003010A (en) * 2019-12-17 2020-04-14 中车长江铜陵车辆有限公司 Railway freight car bogie block casting type auxiliary framework

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Application publication date: 20120620