CN107096862A - The forging method of integrated brake beam frame - Google Patents
The forging method of integrated brake beam frame Download PDFInfo
- Publication number
- CN107096862A CN107096862A CN201710245571.5A CN201710245571A CN107096862A CN 107096862 A CN107096862 A CN 107096862A CN 201710245571 A CN201710245571 A CN 201710245571A CN 107096862 A CN107096862 A CN 107096862A
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- Prior art keywords
- blank
- beam frame
- brake beam
- cutting
- integrated brake
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/002—Hybrid process, e.g. forging following casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/201—Work-pieces; preparation of the work-pieces, e.g. lubricating, coating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K7/00—Making railway appurtenances; Making vehicle parts
- B21K7/12—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes
- B21K7/14—Making railway appurtenances; Making vehicle parts parts for locomotives or vehicles, e.g. frames, underframes brake rigging or brake parts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
- B61H13/00—Actuating rail vehicle brakes
- B61H13/34—Details
- B61H13/36—Beams; Suspension thereof
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The present invention provides a kind of forging method of integrated brake beam frame, including：Blank is once heated using intermediate frequency furnace；Blank includes the arch bar being wholely set and the bottom back of the body；Blank after heating is marked；Cutting is carried out to the middle part of blank and joint-cutting is formed, Part I and Part II is formed respectively with the both sides in joint-cutting, Part III and Part IV is formed respectively at the two ends of joint-cutting；Wherein, Part I includes part arch bar, and Part II is carried on the back including partial bottom；Part I is stretched；Part II is bent；Blank after press-bending is detected a flaw.The problems such as present invention can effectively prevent postwelding residual stress and the Structure Transformation Features In Weld Heat-affected of the integrated brake beam frame presence that welding is formed, improve material structure defect, and add material compactness, so as to, improve the bulk strength of integrated brake beam frame, the service life of integrated brake beam frame is improved, and improves the security and stability of vehicle operation.
Description
Technical field
The present invention relates to rail vehicle manufacturing technology, more particularly to a kind of forging method of integrated brake beam frame.
Background technology
At present, I crosses the braking that railway freight-car realizes vehicle frequently with integrated form brake rigging.Integrated form basis system
Dynamic device specifically includes hand brake lever, checking cylinder, brake pushrod, brake beam, non-brake cylinder side lever, non-brake cylinder side J-type
Lever, lock adjust device, checking cylinder side J-type lever, high friction composite brake shoe, and its is simple and compact for structure, and parts are readily disassembled installation, get rid of
The structure that brake force is delivered on brake beam by original front and rear brake lever and pull bar by vehicle bottom is abandoned, greatly
Vehicle bottom space is released, lorry concave bottom structure design is advantageously implemented, effectively reduces light weight, improve the load of vehicle
Beijing South Maxpower Technology Co. Ltd's power；Wherein, checking cylinder of the brake force directly on brake beam frame is provided, and improves retardation efficiency and vehicle safety is stable
Property.
Brake beam is the most important part of rolling stock brake rigging, when primarily serving vehicle braking, brake force
Brake shoe is passed to by brake beam, vehicle is halted.Integrated brake beam is by integrated brake beam frame, pillar, left and right brake head
Deng composition, integrated brake beam frame is welded by the angle steel bent and the both sides of round steel, and left and right brake head is separately positioned on collection
Into the both sides of brake beam frame, pillar is arranged on the middle part of integrated brake beam frame, and is arranged between angle steel and round steel.
However, the integrated brake beam frame manufactured by the way of welding, postwelding residual stress and welding heat affected zone
The problems such as structural transformation, can all influence the bulk strength and service life of integrated brake beam frame, can be brought to traffic safety larger hidden
Suffer from.
The content of the invention
For drawbacks described above of the prior art, the present invention provides a kind of forging method of integrated brake beam frame, Neng Gouyou
Effect improves the bulk strength of integrated brake beam frame, and then improves the security and stability of rail vehicle operation.
The present invention provides a kind of forging method of integrated brake beam frame, including：
Blank is once heated using intermediate frequency furnace；Wherein, the blank include the arch bar that is wholely set and
Carry on the back at bottom；
Blank after heating is marked；
Cutting is carried out to the middle part of blank and joint-cutting is formed, to form Part I and the respectively in the both sides of the joint-cutting
Two parts, Part III and Part IV are formed at the two ends of the joint-cutting respectively；Wherein, Part I includes the part bow
Shape bar, Part II includes the part bottom back of the body；
The Part I is stretched；
The Part I and Part II are bent；
Blank after press-bending is detected a flaw.
Further, to the heating and temperature control of the blank between 900 DEG C -950 DEG C.
Further, the heat time of the blank is controlled between 120s-150s.
Further, before to blank once heat using intermediate frequency furnace, including：
Blanking is carried out to shaped steel using band sawing machine, to form blank.
Further, the middle part to blank carries out cutting and forms joint-cutting, specifically includes：
Straightening is carried out to carving the blank after marking, is placed on the tray of slicing machine；
One end of blank is positioned, to ensure that blank is located at the cutting edge center of slicing machine；
Cutting is carried out to blank and joint-cutting is formed.
Further, it is described that the Part I is stretched, specifically include：
Blank after cutting is positioned in stretching-machine, and causes the handle mechanism of the stretching-machine to be in the blank
Middle part so that the hold-down mechanism of stretching-machine compresses the two ends of the blank, starts the handle mechanism to the first of the blank
Part is stretched along the direction away from the Part II.
Further, after being stretched to the Part I, including：Blank after stretching is placed on shaping
In mould, shaping is carried out to the blank by the slide block mechanism in the sizing die.
Further, it is described that the Part I and Part II are bent, specifically include：
Blank is positioned in bullodozer so that the hold-down mechanism of bullodozer compresses the two ends of the blank, started described
The bending mechanism of bullodozer is bent to the Part I and Part II of the blank；
Wherein, to the Part I and Part II bend direction perpendicular to the length direction of the Part II and
Perpendicular to the draw direction of the Part I.
Further, after being bent to the Part I and Part II, in addition to：
Shot Blasting is carried out to the blank；
Reconditioning is carried out to the blank.
The forging method for the integrated brake beam frame that the present invention is provided, by carrying out cutting, stretching to blank, bending forging most
End form effectively prevent the postwelding residual stress and sweating heat for the integrated brake beam frame presence that welding is formed into integrated brake beam frame
The problems such as zone of influence structural transformation, material structure defect is improved, and add material compactness, so that, improve integrated
The bulk strength of brake beam frame, improves the service life of integrated brake beam frame, and improves the safety and stability of vehicle operation
Property.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of the forging method embodiment one of integrated brake beam frame of the invention；
Fig. 2 is the cross-sectional view before the non-cutting of blank in the forging method of integrated brake beam frame of the invention；
Fig. 3 for integrated brake beam frame of the invention forging method in blank cutting after, the cross section in the middle part of blank shows
It is intended to；
Fig. 4 is the schematic flow sheet of the forging method embodiment two of integrated brake beam frame of the invention.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art are obtained under the premise of creative work is not made
The every other embodiment obtained, belongs to the scope of protection of the invention.In the case where not conflicting, following embodiments and implementation
Feature in example can be mutually combined.
Wherein, the term of " on ", " under " etc., is for describing the relative position relation of each structure in the accompanying drawings, being only
It is easy to understanding for narration, and is not used to limit enforceable scope of the invention, its relativeness is altered or modified, without essence
Change under technology contents, when being also considered as enforceable category of the invention.
It should be noted that in the description of the invention, term " first ", " second " are only used for the different portion of convenient description
Part, and it is not intended that indicating or implying ordinal relation, relative importance or the implicit number for indicating indicated technical characteristic
Amount.
Embodiment one
Fig. 1 is the schematic flow sheet of the forging method embodiment one of integrated brake beam frame of the invention；Fig. 2 is integrated for the present invention
Cross-sectional view in the forging method of brake beam frame before the non-cutting of blank；Fig. 3 is the forging of integrated brake beam frame of the invention
After making in method to blank cutting, the cross-sectional view in the middle part of blank.
Fig. 1-3 are refer to, the present embodiment provides a kind of forging method of integrated brake beam frame, including：
S101, using intermediate frequency furnace blank is once heated；Wherein, blank includes the arch bar 12 being wholely set
And the bottom back of the body 11；
Specifically, blank is typically to be made up of steel alloy, such as Q460E steel；The cross-sectional view of blank now can
With as shown in Figure 2.It on the power of intermediate frequency furnace, can according to actual needs be configured, for example, can be 450kw, it is right
The heating and temperature control of blank is between 900 DEG C -950 DEG C, and the heat time is controlled between 120s-150s, by going out for blank
Furnace temperature is controlled in the range of technological requirement.
Wherein, the structure that the structure of arch bar 12 can be with the round steel for welding the integrated brake beam frame being made in the prior art
Similar, its cross section can be approximated to be circle.The structure of the bottom back of the body 11 can be with welding the integrated brake beam being made in the prior art
The structure of the angle steel of frame is similar, specifically includes the first steel plate and the second steel plate, has between the first steel plate and the second steel plate pre-
If angle, the predetermined angle can be configured according to actual needs, for example, can be 90 degree, and the first steel plate stretches out second
The part of steel plate is properly termed as brachypterism 11a.
S102, the blank after heating is marked；
Specifically, blank is marked in marking machine, mark can specifically include：Grade of steel, manufacture batch and system
Make the mark on date etc..In the present embodiment, blank is marked before blank is stretched and/or bent, is easy to beat
Number machine is positioned and marked to blank.
S103, cutting carried out to the middle part of blank simultaneously form joint-cutting, with formed respectively in the both sides of joint-cutting Part I and
Part II, Part III and Part IV are formed at the two ends of joint-cutting respectively；Wherein, Part I includes part arch bar
12, Part II includes the partial bottom back of the body 11；
Specifically, straightening can be carried out by manually to carving the blank after marking；Blank after straightening is placed in cutting
On the tray of machine；One end of blank is positioned, to ensure that blank is located at the cutting edge center of slicing machine；Along the length side of blank
To carrying out cutting to blank, the cross-sectional view in the middle part of blank after cutting can with as shown in figure 3, now, the two of blank
The cross-sectional view of the non-diced part at end is as shown in Figure 2.
In the present embodiment, by carrying out straightening processing to blank, the precision of forging molding workpiece is helped to ensure that.For adjusting
Specific modes of emplacement of the blank on the tray of slicing machine after straight, the present embodiment is not specifically limited, those skilled in the art
It can be placed according to actual needs；It is preferred that the radial direction of the arch bar of blank is set along the vertical direction, by bottom carry on the back it is short
Wing 11a is placed upward, in order to which blank is rested easily within the tray of slicing machine, and is easy to the positioning to blank.
S104, Part I is stretched；
Specifically, the blank after cutting is positioned in stretching-machine, and causes the handle mechanism of stretching-machine to be in blank
Middle part so that the hold-down mechanism of stretching-machine compresses the two ends of blank, starts handle mechanism to the Part I of blank along away from the
The direction of two parts is stretched.
In the present embodiment, hold-down mechanism can specifically compress blank two ends.Hold-down mechanism is compressed after blank, starts handle
Mechanism, the center of blank is drawn high to 335 millimeters, that is, stretching after Part I center and the center of Part II
Between the first vertical range be 335 millimeters；Certainly, center and the two ends of Part I for the Part I after stretching
Between the first vertical range be not limited to this, the present embodiment is to be illustrated, and those skilled in the art can basis
It is actually needed and first vertical range is configured.
S105, Part I and Part II are bent；
Specifically, blank is positioned in bullodozer so that the hold-down mechanism of bullodozer compresses the two ends of blank, starts pressure
The bending mechanism of bender is bent to the Part I and Part II of blank.To the press-bending side of Part I and Part II
To the length direction perpendicular to Part II and the draw direction perpendicular to Part I, that is to say, that bend direction and second
Partial length direction is vertical and vertical with the draw direction of Part I.The center of Part II after press-bending with second
The second vertical range between the two ends divided is 92.5 millimeters；Along bending direction, the center of the Part I after press-bending and the
The 3rd vertical range between the two ends of a part is identical with the second vertical range.
Certainly, the second vertical range between center and the two ends of Part II for the Part II after press-bending is simultaneously
Not limited to this, the present embodiment is to be illustrated, and those skilled in the art can be second vertical to this according to actual needs
Distance is configured.
In the present embodiment, other sizes and springback capacity during bending can be ensured using process meanses such as reversible deformations
Change in allowed band, realize integrated brake beam frame solid forging, can effectively evade the risk of weld defect, tool causes
Integrated brake beam frame has higher service life and security and stability, also, forging production efficiency is higher, can reduce vehicle
Production cost.
In addition, in the present embodiment, only once heated to blank, can process simplification, reduce processing cost, and
And make it that the oxide skin of blank is relatively thin, decarburized layer is reduced, and then being capable of further process simplification, and contribute to shaping
Integrated brake beam frame obtains good physical property, with higher intensity and corrosion resistance.
S106, the blank after press-bending is detected a flaw.
In the present embodiment, blank can specifically be detected a flaw by defectoscope, if flaw detection is qualified, that is, pass through flaw detection
After machine flaw detection, there is no existing defects in blank, then can carry out delivery assembling using blank as the integrated brake beam frame of shaping.
The forging method for the integrated brake beam frame that the present embodiment is provided, by carrying out cutting, stretching to blank, bending and forge
Integrated brake beam frame is ultimately formed, postwelding residual stress and the welding for the integrated brake beam frame presence that welding is formed is effectively prevent
The problems such as heat affected area structural transformation, material structure defect is improved, and add material compactness, so that, improve collection
Into the bulk strength of brake beam frame, the service life of integrated brake beam frame is improved, and improves the safety of vehicle operation surely
It is qualitative.
Embodiment two
Fig. 4 is the schematic flow sheet of the forging method embodiment two of integrated brake beam frame of the invention.
Fig. 4 is refer to, and continues referring to Fig. 2-3, the present embodiment provides a kind of forging method of integrated brake beam frame, tool
Body includes：
S201, using band sawing machine to shaped steel carry out blanking, to form blank；
Specifically, shaped steel has default cross section, that is, shaped steel includes the arch bar 12 being wholely set and the bottom back of the body 11, type
The cross-sectional view of steel can be identical with the cross-sectional view before blank is cutting, specific as shown in Figure 2.From section bar
The section bar with preset length is removed, to form blank, wherein it is desired to the length tolerance of strict control section bar is within ± 3, with
Ensure the accuracy of the integrated brake beam frame of shaping.
S202, using intermediate frequency furnace blank is once heated；Wherein, blank include the arch bar that is wholely set and
Carry on the back at bottom；
S203, the blank after heating is marked；
S204, cutting carried out to the middle part of blank simultaneously form joint-cutting, with formed respectively in the both sides of joint-cutting Part I and
Part II, Part III and Part IV are formed at the two ends of joint-cutting respectively；Wherein, Part I includes part arch bar
12, Part II includes the partial bottom back of the body 11；
S205, Part I is stretched；
S206, the blank after stretching is placed in sizing die, blank is carried out by the slide block mechanism in sizing die
Shaping；
In the present embodiment, the blank after stretching is placed in sizing die, and ensures the centering of blank, is then turned on
Slide block mechanism in sizing die is to blank shaping, so that the drift angle of blank, center higher size are attained by final finished size
Requirement.
S207, Part I and Part II are bent；
S208, to blank carry out Shot Blasting；
In the present embodiment, due to that in the heating to blank, the surface of blank can be caused to produce oxide skin, therefore, to base
, it is necessary to enter places Shot Blasting after material heating, to remove the oxide skin of blank surface, the surface of blank is carried out at reinforcing
Reason, to obtain good physical property, improves the intensity and corrosion resistance on its surface.
S209, to blank carry out reconditioning；
In the present embodiment, reconditioning processing is carried out to overlap of blank etc., and remove surplus.
S210, the blank after reconditioning is detected a flaw.
In the present embodiment, step S202-S205 and the step S101-S104 in previous embodiment function and implementation process
Identical, step S207 is identical with the function and implementation process of the step S105 in previous embodiment, and step S210 is implemented with foregoing
The function and implementation process of step S106 in example is identical, repeats no more herein.
The forging method for the integrated brake beam frame that the present embodiment is provided, by carrying out cutting, stretching to blank, bending and forge
Integrated brake beam frame is ultimately formed, postwelding residual stress and the welding for the integrated brake beam frame presence that welding is formed is effectively prevent
The problems such as heat affected area structural transformation, material structure defect is improved, and add material compactness, so that, improve system
The bulk strength of dynamic roof beam structure, improves the service life of brake beam frame, and improves the security and stability of vehicle operation.
Illustrate below and the forging method of the integrated brake beam frame of the present embodiment offer is illustrated.
The blank that length is about 1630mm is taken from the shaped steel with default cross section；
Blank is once heated using 450kw intermediate frequency furnaces, heating-up temperature is 950 DEG C, and the heat time keeps
135s；
Marking is carved to the blank after heating；
Along the length direction of blank, cutting is carried out to blank and joint-cutting is formed, by joint-cutting the middle part of blank both sides
Part I and Part II are formed, Part I includes part arch bar, and Part II is carried on the back including partial bottom；And in joint-cutting
Two ends form Part III and Part IV respectively, Part III and Part IV be along the length direction of blank, blank not
The length of the part being split, Part III and Part IV is about 145mm；
The Part I of blank is stretched, that is, the center of blank is drawn high to 335 millimeters, that is, after stretching
Vertical range between the center of Part I and the center of Part II is 335 millimeters；
Blank after stretching is placed in sizing die, shaping is carried out to blank by the slide block mechanism in sizing die；
Part I and Part II are bent；Wherein, by taking Part II as an example, Part II after press-bending
Vertical range between center and the two ends of Part II is 92.5 millimeters；
Shot Blasting, reconditioning and flaw detection are carried out to blank successively；
If flaw detection is qualified, blank is delivered as the integrated brake beam frame of shaping and assembled.
The forging method of the integrated brake beam frame provided using the present embodiment, single integrated brake beam frame forging time is
140 seconds, production efficiency was high, and labor intensity of operating staff is low, and production cost is low, suitable batch production.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above-mentioned each method embodiment can lead to
The related hardware of programmed instruction is crossed to complete.Foregoing program can be stored in a computer read/write memory medium.The journey
Sequence upon execution, performs the step of including above-mentioned each method embodiment；And foregoing storage medium includes：ROM, RAM, magnetic disc or
Person's CD etc. is various can be with the medium of store program codes.
Finally it should be noted that：Various embodiments above is merely illustrative of the technical solution of the present invention, rather than its limitations；To the greatest extent
The present invention is described in detail with reference to foregoing embodiments for pipe, it will be understood by those within the art that：Its according to
The technical scheme described in foregoing embodiments can so be modified, or which part or all technical characteristic are entered
Row equivalent substitution；And these modifications or replacement, the essence of appropriate technical solution is departed from various embodiments of the present invention technology
The scope of scheme.
Claims (9)
1. a kind of forging method of integrated brake beam frame, it is characterised in that including：
Blank is once heated using intermediate frequency furnace；Wherein, the blank includes the arch bar being wholely set and the bottom back of the body；
Blank after heating is marked；
Cutting is carried out to the middle part of blank and joint-cutting is formed, to form Part I and second respectively in the both sides of the joint-cutting
Point, Part III and Part IV are formed respectively at the two ends of the joint-cutting；Wherein, Part I includes the part arch
Bar, Part II includes the part bottom back of the body；
The Part I is stretched；
The Part I and Part II are bent；
Blank after press-bending is detected a flaw.
2. the forging method of integrated brake beam frame according to claim 1, it is characterised in that to the heating temperature of the blank
Degree control is between 900 DEG C -950 DEG C.
3. the forging method of integrated brake beam frame according to claim 2, it is characterised in that during to the heating of the blank
Between control between 120s-150s.
4. the forging method of integrated brake beam frame according to claim 1, it is characterised in that using intermediate frequency furnace pair
Before blank once heat, including：
Blanking is carried out to shaped steel using band sawing machine, to form blank.
5. the forging method of integrated brake beam frame according to claim 1, it is characterised in that described to entering in the middle part of blank
Row cutting simultaneously forms joint-cutting, specifically includes：
Straightening is carried out to carving the blank after marking, is placed on the tray of slicing machine；
One end of blank is positioned, to ensure that blank is located at the cutting edge center of slicing machine；
Cutting is carried out to blank and joint-cutting is formed.
6. the forging method of integrated brake beam frame according to claim 1, it is characterised in that described to the Part I
Stretched, specifically included：
Blank after cutting is positioned in stretching-machine, and the handle mechanism of the stretching-machine is in the blank
Portion so that the hold-down mechanism of stretching-machine compresses the two ends of the blank, starts the handle mechanism to first of the blank
Divide and stretched along the direction away from the Part II.
7. the forging method of integrated brake beam frame according to claim 1, it is characterised in that enter to the Part I
After row stretching, including：Blank after stretching is placed in sizing die, by the slide block mechanism in the sizing die to institute
State blank and carry out shaping.
8. the forging method of the integrated brake beam frame according to claim 1 or 7, it is characterised in that described to described first
Part and Part II are bent, and are specifically included：
Blank is positioned in bullodozer so that the hold-down mechanism of bullodozer compresses the two ends of the blank, starts described bend
The bending mechanism of machine is bent to the Part I and Part II of the blank；
Wherein, direction is bent perpendicular to the length direction of the Part II and vertical to the Part I and Part II
In the draw direction of the Part I.
9. the forging method of integrated brake beam frame according to claim 1, it is characterised in that to the Part I and
After Part II is bent, in addition to：
Shot Blasting is carried out to the blank；
Reconditioning is carried out to the blank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245571.5A CN107096862A (en) | 2017-04-14 | 2017-04-14 | The forging method of integrated brake beam frame |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710245571.5A CN107096862A (en) | 2017-04-14 | 2017-04-14 | The forging method of integrated brake beam frame |
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| CN107096862A true CN107096862A (en) | 2017-08-29 |
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| CN201710245571.5A Pending CN107096862A (en) | 2017-04-14 | 2017-04-14 | The forging method of integrated brake beam frame |
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| US1565346A (en) * | 1923-01-10 | 1925-12-15 | American Steel Foundries | Brake beam and method of making same |
| CN2568501Y (en) * | 2002-08-30 | 2003-08-27 | 齐齐哈尔铁路车辆(集团)有限责任公司 | Combined stock braking beam |
| CN101983883A (en) * | 2010-10-29 | 2011-03-09 | 齐齐哈尔轨道交通装备有限责任公司 | Brake beam of railway vehicle |
| CN204196924U (en) * | 2014-11-10 | 2015-03-11 | 长春市新金享冷弯型钢有限公司 | The asymmetric cross-shaped steel of the heavy lorry brake device brake beam frame hot rolling of macro-axis |
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2017
- 2017-04-14 CN CN201710245571.5A patent/CN107096862A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1565346A (en) * | 1923-01-10 | 1925-12-15 | American Steel Foundries | Brake beam and method of making same |
| CN2568501Y (en) * | 2002-08-30 | 2003-08-27 | 齐齐哈尔铁路车辆(集团)有限责任公司 | Combined stock braking beam |
| CN101983883A (en) * | 2010-10-29 | 2011-03-09 | 齐齐哈尔轨道交通装备有限责任公司 | Brake beam of railway vehicle |
| CN204196924U (en) * | 2014-11-10 | 2015-03-11 | 长春市新金享冷弯型钢有限公司 | The asymmetric cross-shaped steel of the heavy lorry brake device brake beam frame hot rolling of macro-axis |
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Application publication date: 20170829 |