CN102501725B - High-strength rail transit wheel - Google Patents
High-strength rail transit wheel Download PDFInfo
- Publication number
- CN102501725B CN102501725B CN201110340083.5A CN201110340083A CN102501725B CN 102501725 B CN102501725 B CN 102501725B CN 201110340083 A CN201110340083 A CN 201110340083A CN 102501725 B CN102501725 B CN 102501725B
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- Prior art keywords
- wheel
- rim
- wheel rim
- cross
- rail transit
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 11
- 239000010959 steel Substances 0.000 claims abstract description 11
- 238000005266 casting Methods 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 3
- 230000035553 feeding performance Effects 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 230000002035 prolonged effect Effects 0.000 abstract 1
- 230000003014 reinforcing effect Effects 0.000 abstract 1
- 230000035882 stress Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000005489 elastic deformation Effects 0.000 description 2
- 230000003137 locomotive effect Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 210000003625 skull Anatomy 0.000 description 2
- 230000009194 climbing Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000010349 pulsation Effects 0.000 description 1
- 230000008646 thermal stress Effects 0.000 description 1
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- Heat Treatment Of Articles (AREA)
Abstract
A high-strength rail transit wheel relates to the technical field of rail transit wheels and comprises a hub, a spoke and a rim. The high-strength rail transit wheel is characterized in that an annular cavity is arranged in the rim and equidistantly spaced from the edge of an outer contour of the cross section of the rim, the annular cavity is a circular hole on the cross section of the rim, a steel chilling block ring is arranged in the annular cavity of the rim, and the outer diameter of the cross section of the steel chilling block ring is 20-30% of the radial length of the cross section of the rim. The steel chilling block ring in the annular cavity of the rim is a reinforcing rib in the rim, so that serviceability and durability of the rail transit wheel are greatly enhanced, and the service life of the rail transit wheel is further prolonged.
Description
Technical field
The present invention relates to track traffic wheel technical field.
Background technology
In the prior art, track traffic wheel is normally by wheel hub, spoke and form wheel rim and the wheel rim of running surface of wheeltrack forms.The shell that spoke is made up of the plane being connected, the conical surface or curved shell system.The shape of spoke former has: straight-arm plate, s type former, undaform former, basin type former.Structural strength and the rigidity of the shape of former on wheel has larger impact, and its radial rigidity can make wheel have larger elasticity, can improve the state of stress of wheel under braking thermal load and reduce wheel track dynamic deformation from motion.The axial stiffness of former should be tried one's best greatly, reduces the axial deformation of wheel, prevents the normal contact position of wheel track and wheel rim angle, affects vehicle operating performance and increases the possibility of climbing rail.
Wheel rim is the ring-like body of heavy wall cross-sectional plane that forms wheel rim.Wheel when rolling-operation, is occurring between wheel track to interact on rail.Running surface of wheeltrack is the ellipse of elastic deformation, has the vertical force P heavily being caused by axle on contact surface; The longitudinal force FX producing when wheel rolling advances; The transverse force FY that locomotive, vehicle produce during by curve.Running surface of wheeltrack place under vertical force effect produces contact PZ and shearing stress τ, has two classes: with the pulsation circulation shear stress τ 45 of contact surface direction at 45 ° at the friction stress at contact surface place; Another kind is the symmetrical cycle shearing stress τ 0 parallel with contact direction, and the maximum shear stress is the major cause of Contact Fatigue Crack Propagation origin and development.The rigid design of the wheel rim of the ring-like body of this heavy wall cross-sectional plane makes the wheel rim that forms wheel rim and running surface of wheeltrack be subject to larger mechanical strees and thermal stress; in use conventionally can increase various dissimilar inefficacies occur, main manifestations is abrasion, endurance crack, peels off, falls piece, collapses piece, collapses hoop etc.
Summary of the invention
The object of the invention is to design the structure optimization track traffic wheel of a kind of equal stress, high casting material density and quality.
The present invention includes wheel hub, spoke and wheel rim, it is characterized in that being provided with in described wheel rim the cavity of a circular ring type, the cavity of this circular ring type is equidistant apart from the outline edge of wheel rim cross-sectional plane, the cavity of this circular ring type is circular apertures on wheel rim cross-sectional plane, in the cavity of the circular ring type of wheel rim, be provided with a steel chill torus, the external diameter of the toric cross-sectional plane of described steel chill be wheel rim cross-sectional plane diametrically length 20～30%.
The present invention has designed the cavity of circular ring type at wheel rim Elastic, make wheel rim on rail, in rolling-operation, between wheel track, under effect, have the effect of elastic yield factor and equal stress, elastic deformation ellipse on running surface of wheeltrack, vertical force P on contact surface, the longitudinal force FX producing when wheel rolling advances, locomotive, the transverse force FY that vehicle produces during by curve, running surface of wheeltrack place under vertical force effect produces contact PZ and shearing stress τ etc. and obtains corresponding improvement, can avoid abrasion, endurance crack, peel off, fall piece, collapse piece, collapse the generation of the phenomenons such as hoop.
Because wheel rim is in the prior art the ring-like body of heavy wall cross-sectional plane that forms wheel rim, its cross sectional dimensions reaches ∮ 135-140mm, wheel rim external diameter is ∮ 840-915mm, the casting fluidity of wheel rim in inblock cast, casting liquid rate of cooling and feeding performance are all very poor, in the castability of wheel rim maximum problem be that crystal is thick, loose, the macrostructure defect such as segregation, shrinkage cavity and skull patch.In foundry goods, exist above-mentioned macrostructure defect more, its mechanical property more can significantly reduce, and especially in foundry goods, the thick meeting of crystal grain directly affects the low of mechanical castings, causes fracture or other accidents in use can occur.The present invention is designed with the cavity of a circular ring type in its wheel rim, and there is a steel chill torus in the cavity of the circular ring type of wheel rim, accelerate the casting fluidity of wheel rim, casting liquid rate of cooling and feeding performance in casting, make grain refinement in foundry goods, reduce the formation of the macrostructure defects such as loose, segregation, shrinkage cavity and skull patch, thereby improved wheel foundry goods, the particularly mechanical property of track traffic wheel wheel rim.And to have a steel chill torus in the cavity of the circular ring type of wheel rim be a reinforced rib in wheel rim, greatly increase serviceability and the durability of track traffic wheel, further extend the service life of track traffic wheel.
Accompanying drawing explanation
Fig. 1 is a kind of structure schematic diagram of the present invention.
The specific embodiment
As shown in Figure 1, track traffic wheel 1 comprises the wheel rim 4 of wheel hub 2, spoke 3 and formation wheel rim 5 and running surface of wheeltrack 6.
In wheel rim 4, be designed with the cavity of a circular ring type, the cavity of this circular ring type is equidistant apart from the outline edge of wheel rim 4 cross-sectional planes, and the cavity of this circular ring type is circular apertures on wheel rim 4 cross-sectional planes.
In the cavity of circular ring type, be provided with a steel chill torus 7, the external diameter of the cross-sectional plane of steel chill torus 7 be wheel rim 4 cross-sectional planes diametrically length L 20～30%, this example is 26%.
Claims (1)
1. a high-strength rail transit wheel, comprise wheel hub, spoke and wheel rim, it is characterized in that being provided with in described wheel rim the cavity of a circular ring type, the cavity of described circular ring type is equidistant apart from the outline edge of wheel rim cross-sectional plane, the cavity of described circular ring type is circular apertures on wheel rim cross-sectional plane, in the cavity of described circular ring type, be provided with one for optimizing the steel chill torus of casting fluidity, casting liquid rate of cooling and feeding performance, the external diameter of the toric cross-sectional plane of described steel chill be wheel rim cross-sectional plane diametrically length 20 ~ 30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110340083.5A CN102501725B (en) | 2011-11-02 | 2011-11-02 | High-strength rail transit wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110340083.5A CN102501725B (en) | 2011-11-02 | 2011-11-02 | High-strength rail transit wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102501725A CN102501725A (en) | 2012-06-20 |
| CN102501725B true CN102501725B (en) | 2014-07-09 |
Family
ID=46213883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110340083.5A Active CN102501725B (en) | 2011-11-02 | 2011-11-02 | High-strength rail transit wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102501725B (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB319549A (en) * | 1928-12-14 | 1929-09-26 | Nestor Leonard | Improvements in disc wheels for railway rolling stock and the like |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2646308A (en) * | 1943-04-05 | 1953-07-21 | Pirelli | Resilient wheel for vehicles rolling on rails |
| SU897592A1 (en) * | 1977-07-04 | 1982-01-15 | Днепропетровский Ордена Трудового Красного Знамени Металлургический Институт | Rail vehicle wheel |
| DE102006018037A1 (en) * | 2006-04-12 | 2010-01-07 | Sander Linke | Multi-part rail wheel for car, has connecting links designed in tubular manner, and inwardly circulating cavity whose internal pressure is variable by valve, where cavity is filled with gaseous or liquid materials |
| CN202294050U (en) * | 2011-11-02 | 2012-07-04 | 扬州华铁铁路配件有限公司 | High-intensity rail traffic wheel |
-
2011
- 2011-11-02 CN CN201110340083.5A patent/CN102501725B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB319549A (en) * | 1928-12-14 | 1929-09-26 | Nestor Leonard | Improvements in disc wheels for railway rolling stock and the like |
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| Publication number | Publication date |
|---|---|
| CN102501725A (en) | 2012-06-20 |
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Legal Events
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 225006 Shanhe Industrial Park, Tai'an Town, ecological science and technology new town, Yangzhou City, Jiangsu Province Patentee after: Yangzhou Huatie Electromechanical group Co.,Ltd. Country or region after: China Address before: 225006 North Wantou Town, Hanjiang District, Yangzhou City, Jiangsu Province Patentee before: YANGZHOU HUATIE RAILWAY FITTINGS Co.,Ltd. Country or region before: China |
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| CP03 | Change of name, title or address |