CN113602310A - Anti-side rolling straight rod square cone torsion rod of rolling stock and machining process thereof - Google Patents
Anti-side rolling straight rod square cone torsion rod of rolling stock and machining process thereof Download PDFInfo
- Publication number
- CN113602310A CN113602310A CN202110229817.6A CN202110229817A CN113602310A CN 113602310 A CN113602310 A CN 113602310A CN 202110229817 A CN202110229817 A CN 202110229817A CN 113602310 A CN113602310 A CN 113602310A
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- China
- Prior art keywords
- torsion bar
- rolling
- bar body
- cone
- pyramid
- 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.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 title claims abstract description 27
- 238000003754 machining Methods 0.000 title claims abstract description 7
- 238000005422 blasting Methods 0.000 claims abstract description 5
- 238000005520 cutting process Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000008569 process Effects 0.000 claims abstract description 5
- 238000007670 refining Methods 0.000 claims abstract description 5
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 238000010791 quenching Methods 0.000 claims description 4
- 230000000171 quenching effect Effects 0.000 claims description 4
- 238000005516 engineering process Methods 0.000 abstract description 5
- 230000003137 locomotive effect Effects 0.000 abstract description 4
- 239000002184 metal Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005496 tempering Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/02—Arrangements permitting limited transverse relative movements between vehicle underframe or bolster and bogie; Connections between underframes and bogies
- B61F5/22—Guiding of the vehicle underframes with respect to the bogies
- B61F5/24—Means for damping or minimising the canting, skewing, pitching, or plunging movements of the underframes
-
- 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
- B23P15/20—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass railroad requirements, e.g. buffers
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/18—Hardening; Quenching with or without subsequent tempering
- C21D1/25—Hardening, combined with annealing between 300 degrees Celsius and 600 degrees Celsius, i.e. heat refining ("Vergüten")
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying the physical properties of iron or steel by deformation by cold working of the surface
- C21D7/06—Modifying the physical properties of iron or steel by deformation by cold working of the surface by shot-peening or the like
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Springs (AREA)
Abstract
The invention discloses a square-cone torsion bar of a rolling side anti-rolling straight bar of a locomotive, which comprises a torsion bar body, wherein connecting parts of two ends of the torsion bar body and a rocker arm are connected to form a polyhedron obtained by cutting a square cone, the center line of which is superposed with the axis of the torsion bar, and the vertex of which is positioned on one side far away from the torsion bar, the taper of the square cone is 1:10 or 1:16 or 1:20, and a joint surface matched with the connecting part of the torsion bar body is arranged on the rocker arm. The invention also provides a processing technology of the rolling-resisting torsion bar of the rolling stock, which comprises the following steps: the torsion bar body is subjected to thermal refining after rough machining, and shot blasting is performed on the surface of the torsion bar body. The rolling-resisting torsion bar of the rolling stock adopts a surface contact kinematic pair structure, greatly improves the connection strength, ensures higher safety factor, has simple assembly process, and improves the torsion resistance and compactness.
Description
Technical Field
The invention relates to the technical field of an anti-rolling torsion bar system for a railway vehicle, in particular to a square-cone torsion bar of an anti-rolling straight bar of a locomotive vehicle and a processing technology thereof.
Background
In order to restrain the reduction of the anti-rolling rigidity of the vehicle, a set of anti-rolling torsion bar device is additionally arranged in a suspension system of a common bogie of the vehicle, and the aim is achieved by utilizing the torsion deformation generated by a metal elastic bar when the metal elastic bar is acted by torque to provide anti-torsion moment. The torsion bar has the characteristics of simple process, high calculation accuracy and easiness in control, and is generally applied in the field.
At present, a torsion bar and a rocker arm adopt a spline connection structure, and under the side rolling motion state of the structure, a stressed part only has a local spline tooth surface, so that the contact of the tooth surface and the tooth surface belongs to a linear contact kinematic pair, the connection strength is lower than that of a surface contact connection structure, and the requirement on the angle of a spline is strict, so that the assembly is difficult to realize. Therefore, it is necessary to design a connecting structure of the torsion bar and the rocker arm of the rolling-resisting torsion bar device of the rolling-resisting locomotive with high connecting strength, simple assembly, compact volume, safety and reliability.
Disclosure of Invention
The invention aims to provide a square-cone torsion bar of a side rolling resistant rod of a rolling stock and a processing technology thereof, so as to solve the problems in the background technology.
The invention provides a square-cone torsion bar of a rolling side resistant straight bar of a locomotive vehicle, which comprises a torsion bar body, wherein connecting parts of two ends of the torsion bar body, which are connected with a rocker arm, are all polyhedrons obtained by cutting a regular pyramid of which the center line is coincident with the axis of the torsion bar and the vertex is positioned at one side far away from the torsion bar, the taper of the regular pyramid is 1:10 or 1:16 or 1:20, and a joint surface matched with the connecting part of the torsion bar body is arranged on the rocker arm.
Further, the regular pyramid is one of a regular triangular pyramid, a regular rectangular pyramid, a regular pentagonal pyramid and a regular hexagonal pyramid.
Further, the torsion bar body is made of 50CrVA spring steel.
The invention also provides a processing technology of the rolling-resisting torsion bar of the rolling stock, which comprises the following steps: the torsion bar body is subjected to thermal refining after rough machining, so that the strength is more than 1500MPa and the rigidity is 3.0 +/-5% MN.m/rad after thermal refining and quenching, shot blasting is performed on the surface of the torsion bar body, the surface coverage rate is more than or equal to 95%, and the surface hardness value reaches 45-52 HRC.
Compared with the prior art, the invention has the following beneficial effects: the rolling-resisting torsion bar of the rolling stock is directly subjected to heat treatment to meet the corresponding requirements without cutting processing, and adopts a surface contact kinematic pair structure, so that the connection strength is greatly improved, and a higher safety coefficient is ensured.
Drawings
Fig. 1 is a schematic view of the overall structure of a torsion beam body of the present invention.
Fig. 2 is a schematic view of the direction a-a in fig. 1.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
As shown in fig. 1-2, a square-cone torsion bar of a rolling stock anti-roll bar of the present embodiment includes a torsion bar body 1, where a connecting portion 2 of two ends of the torsion bar body 1 connected to a rocker arm is a polyhedron obtained by cutting a square cone whose central line coincides with an axis of the torsion bar and whose vertex is located at a side far from the torsion bar, the taper of the square cone is 1:10 or 1:16 or 1:20, and a connecting surface adapted to the connecting portion 2 of the torsion bar body is provided on the rocker arm.
In the embodiment, the torsion bar body is made of 50CrVA spring steel, the torsion bar body is subjected to quenching and tempering after rough machining, so that the strength is more than 1500MPa, the rigidity is 3.0 +/-5% of MN.m/rad, the surface of the torsion bar body is subjected to shot blasting, the surface coverage rate is more than or equal to 95%, and the surface hardness value reaches 45-52 HRC.
According to the rolling resistance torsion bar of the rolling stock, the torsion bar and the rocker arm are assembled through oil pressure, the joint surface adopts a conical connection structure to complete conical surface self-locking, and the surface contact kinematic pair structure greatly improves the connection strength; after locking, the torsion bar and the rocker arm are integrated, and the torsion bar and the rocker arm do not need to be assembled again, so that the compactness of the mechanism is improved, and the assembly process is simplified; the torsion bar is made of 50CrVA spring steel, the strength is 1700Mpa after quenching and tempering, the surface is subjected to shot blasting after grinding, the surface coverage rate reaches 95%, the hardness needs to reach 52HRC, and the service life of the torsion bar and rocker arm connecting structure is prolonged.
Many modifications and other embodiments of the invention will come to mind to one skilled in the art to which this invention pertains having the benefit of the teachings presented in the foregoing descriptions and the associated drawings. Therefore, it is to be understood that the inventions are not to be limited to the specific embodiments disclosed and that modifications and other embodiments are intended to be included within the scope of the appended claims. Although specific terms are employed herein, they are used in a generic and descriptive sense only and not for purposes of limitation.
Claims (4)
1. The utility model provides a rolling stock anti side rolling straight pole square cone torsion bar, includes the torsion bar body, its characterized in that: the connecting parts of the two ends of the torsion bar body and the rocker arm are all polyhedrons obtained by cutting a regular pyramid of which the center line is coincident with the axis of the torsion bar and the vertex is positioned at one side far away from the torsion bar, the taper of the regular pyramid is 1:10 or 1:16 or 1:20, and the rocker arm is provided with a combining surface matched with the connecting part of the torsion bar body.
2. The square-cone torsion bar of the anti-roll bar of the rolling stock of claim 1, wherein: the regular pyramid is one of a regular triangular pyramid, a regular rectangular pyramid, a regular pentagonal pyramid and a regular hexagonal pyramid.
3. The square-cone torsion bar of the anti-roll bar of the rolling stock of claim 1, wherein: the torsion bar body is made of 50CrVA spring steel.
4. The process for machining the square-cone torsion bar of the anti-rolling rod of the rolling stock as claimed in claim 1 or 2, wherein the process comprises the following steps: the torsion bar body is subjected to thermal refining after rough machining, so that the strength is more than 1500MPa and the rigidity is 3.0 +/-5% MN.m/rad after thermal refining and quenching, shot blasting is performed on the surface of the torsion bar body, the surface coverage rate is more than or equal to 95%, and the surface hardness value reaches 45-52 HRC.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110229817.6A CN113602310A (en) | 2021-03-02 | 2021-03-02 | Anti-side rolling straight rod square cone torsion rod of rolling stock and machining process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110229817.6A CN113602310A (en) | 2021-03-02 | 2021-03-02 | Anti-side rolling straight rod square cone torsion rod of rolling stock and machining process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113602310A true CN113602310A (en) | 2021-11-05 |
Family
ID=78303275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110229817.6A Pending CN113602310A (en) | 2021-03-02 | 2021-03-02 | Anti-side rolling straight rod square cone torsion rod of rolling stock and machining process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113602310A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030201591A1 (en) * | 2002-04-30 | 2003-10-30 | Eshelman Edward Jay | Multi-rate torsion bar independent suspension spring |
| WO2005084970A1 (en) * | 2004-03-05 | 2005-09-15 | Kongsberg Automotive Asa | Torsion bar |
| KR20090120288A (en) * | 2008-05-19 | 2009-11-24 | 현대자동차주식회사 | Torsion bar unit for coupled torsion beam axle suspension of a vehicle |
| CN201712622U (en) * | 2009-12-07 | 2011-01-19 | 株洲时代新材料科技股份有限公司 | Anti-side-rolling torsion bar device for railway vehicle |
| CN203063956U (en) * | 2012-08-06 | 2013-07-17 | 株洲时代新材料科技股份有限公司 | Anti-side-rolling twisted bar shaft for railway vehicle |
| DE102017111684A1 (en) * | 2017-05-30 | 2018-12-06 | Schaeffler Technologies AG & Co. KG | Stabilizer arm for a roll stabilizer, method for manufacturing the stabilizer arm and stabilizer assembly with the stabilizer arm |
| CN109318924A (en) * | 2018-08-22 | 2019-02-12 | 株洲季元科技有限责任公司 | A kind of rolling stock torsion bar mechanism for preventing side rolling of train carriage torsion bar and rocker arm connection structure |
-
2021
- 2021-03-02 CN CN202110229817.6A patent/CN113602310A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030201591A1 (en) * | 2002-04-30 | 2003-10-30 | Eshelman Edward Jay | Multi-rate torsion bar independent suspension spring |
| WO2005084970A1 (en) * | 2004-03-05 | 2005-09-15 | Kongsberg Automotive Asa | Torsion bar |
| KR20090120288A (en) * | 2008-05-19 | 2009-11-24 | 현대자동차주식회사 | Torsion bar unit for coupled torsion beam axle suspension of a vehicle |
| CN201712622U (en) * | 2009-12-07 | 2011-01-19 | 株洲时代新材料科技股份有限公司 | Anti-side-rolling torsion bar device for railway vehicle |
| CN203063956U (en) * | 2012-08-06 | 2013-07-17 | 株洲时代新材料科技股份有限公司 | Anti-side-rolling twisted bar shaft for railway vehicle |
| DE102017111684A1 (en) * | 2017-05-30 | 2018-12-06 | Schaeffler Technologies AG & Co. KG | Stabilizer arm for a roll stabilizer, method for manufacturing the stabilizer arm and stabilizer assembly with the stabilizer arm |
| CN109318924A (en) * | 2018-08-22 | 2019-02-12 | 株洲季元科技有限责任公司 | A kind of rolling stock torsion bar mechanism for preventing side rolling of train carriage torsion bar and rocker arm connection structure |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211105 |
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| RJ01 | Rejection of invention patent application after publication |