CN113501022B - Integral structure composite material plate spring for train bogie - Google Patents
Integral structure composite material plate spring for train bogie Download PDFInfo
- Publication number
- CN113501022B CN113501022B CN202110952927.5A CN202110952927A CN113501022B CN 113501022 B CN113501022 B CN 113501022B CN 202110952927 A CN202110952927 A CN 202110952927A CN 113501022 B CN113501022 B CN 113501022B
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- Prior art keywords
- plate spring
- spring body
- bogie
- leaf spring
- thickness
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- 239000002131 composite material Substances 0.000 title abstract description 23
- 239000003365 glass fiber Substances 0.000 claims abstract description 9
- 239000011208 reinforced composite material Substances 0.000 claims abstract 2
- 230000035939 shock Effects 0.000 claims description 13
- 239000003822 epoxy resin Substances 0.000 claims description 3
- 229920000647 polyepoxide Polymers 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000000835 fiber Substances 0.000 abstract description 5
- 230000007423 decrease Effects 0.000 abstract description 4
- 239000007769 metal material Substances 0.000 abstract description 4
- 230000009467 reduction Effects 0.000 abstract description 4
- 230000008859 change Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000013016 damping Methods 0.000 abstract 1
- 238000011161 development Methods 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Images
Classifications
-
- 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
- B61F5/04—Bolster supports or mountings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/08—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with rubber springs ; with springs made of rubber and metal
- F16F15/085—Use of both rubber and metal springs
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Springs (AREA)
- Laminated Bodies (AREA)
Abstract
The invention discloses an integral structure composite plate spring for a train bogie, which can meet the requirements of space occupation reduction, light weight of the train bogie and strength. The plate spring body is made of glass fiber reinforced composite materials, the rigidity value of the plate spring body is 1000N/mm, and the error is plus or minus 5%. The shape of the plate spring body is oval, the width direction of the plate spring body is the same as the axial direction of a wheel shaft in the axle box, and the thickness of the plate spring body is gradually reduced from the vertex of the long shaft and the vertex of the short shaft of the oval to the middle. The two ends of the plate spring body are provided with mounting holes which are connected with the upper end bogie, the lower end high-frequency damping pad and the axle box through bolts. Compared with the traditional metal material, the density of the fiber composite material used in the invention is greatly reduced, the weight of the bogie is obviously reduced, and the lightweight effect is achieved. Meanwhile, the composite plate spring body is oval, the thickness of the composite plate spring body decreases from the left end to the right end to the upper end and the lower end, the inner sides of the upper end and the lower end are provided with V-shaped bulges, the outer side of the composite plate spring body is a plane, the change is continuous, and stress concentration can be greatly reduced.
Description
Technical Field
The invention relates to the technical field of suspensions of railway vehicles, in particular to an integral-structure composite plate spring for a train bogie.
Background
In the world, the problems of energy shortage and environmental pollution are receiving more and more attention, China announces that the carbon peak reaching is achieved 2030 years ago and the carbon neutralization is achieved 2060 year ago, and the sustainable development of the transportation industry faces a severe test. The light weight technology of the vehicle can effectively play roles in improving fuel efficiency, saving energy and reducing emission, and becomes an urgent requirement for future development of the vehicle.
In the rail transit industry, the traditional metal material is used as a main material for manufacturing vehicle parts for a long time due to good mechanical and mechanical properties such as strength, rigidity, high ductility and the like. However, the problems of vibration, impact, noise, excessive density and occupied space caused by the vibration, impact, noise and excessive density and occupied space become increasingly prominent along with the improvement of various technical requirements of the industry, and the problems cannot be well adapted to the development trend of a new generation of rail trains.
Compared with the traditional metal material (such as steel) fiber composite material (FRP), the composite material has the advantages of lower density, higher specific strength and specific rigidity, high modulus, strong designability, good heat insulation, fatigue resistance, flame retardance, corrosion resistance and the like, and has great potential market and development prospect in the field of rail transit. At present, fiber composite materials are widely applied to non-bearing components such as railway vehicle interior facilities and decorations, but the application of the fiber composite materials in some large-scale structural components such as bearing structural components is not deep and wide enough.
The bogie is used as a main bearing component of the railway vehicle and provides sufficient safety and stability for bearing vehicle body load and load. The traditional metal bogie generally has the defects of heavy structure, high maintenance cost, poor curve running capability, high noise and the like. And along with the great improvement of the running speed of the train, the impact force on the track is also improved, so that the train is lightened, particularly the train bogie is lightened, and the energy consumption and the damage to the steel rail in the running process of the train can be reduced. In addition, considering that the space of the train bogie is narrow, most of the current common composite plate springs need to have extra space to release the displacement generated by deformation, and the composite plate springs are difficult to be directly applied to the train bogie.
Therefore, if a composite plate spring can be produced, the requirements of space occupation reduction, light weight and strength of a train bogie can be met, and the positive influence on the green energy-saving development of the rail transit industry can be generated.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a composite plate spring which can simultaneously meet the requirements of space occupation reduction, light weight of a train bogie and strength.
In order to achieve the purpose, the invention provides an integral-structure composite plate spring for a train bogie. The concrete components are as follows: the plate spring comprises a plate spring body, a fastener, a bolt, a baffle, a vertical stop, an external framework, an axle box, a high-frequency shock pad and the like.
The plate spring body is made of glass fiber composite materials and is of an oval layered structure, the oval layered structure is perpendicular to the oval cross section of the plate spring, and a steering frame wheel shaft extending along the horizontal direction is located on the lower side of the plate spring. The inner side and the outer side of the upper end and the lower end of the plate spring are respectively connected with an external framework, a vertical stop and a high-frequency shock pad through fasteners, baffles and bolts. The vertical rigidity value of the plate spring assembly is constant.
Preferably, the laminar structure is made from a unidirectional prepreg of glass fibres, in which the matrix is an epoxy resin.
Preferably, the layered structure is formed by stacking the prepregs described above, and the stacking order is [0 °/0 °/90 °/0 ° ]]ns。
The layers are gradually changed along the length direction, the layers are symmetrical along the thickness center layer, and the thickness of the plate spring is gradually decreased from the left end to the right end to the upper end and the lower end.
Preferably, the inner sides of the upper end and the lower end of the plate spring body are provided with V-shaped bulges which can be fixedly connected, so that stress concentration is reduced.
Preferably, the outer sides of the upper and lower ends of the elliptical plate spring are formed as flat surfaces, so that the contact area can be increased and the stress concentration can be reduced.
Preferably, a backing plate (made of rubber) is added on the contact surface between the upper end and the lower end of the plate spring body and the external member and between the upper end and the lower end of the plate spring body and the high-frequency shock absorption pad, so that the rigid contact between the plate spring and the external member and between the plate spring and the external member is prevented from being damaged.
Preferably, the connection mode of the plate spring body, the upper end bogie and the lower end high-frequency shock pad is bolt connection, and the conventional connection mode in the field can be adopted on the premise of not influencing the use effect.
Preferably, the bolt assembly mode of the joint of the upper framework and the plate spring is from bottom to top, and the bolt assembly mode of the joint of the lower high-frequency shock pad and the plate spring is from top to bottom, so that the assembly operation simplicity is improved.
In order to meet the requirement of train operation on vibration parameters, the integral rigidity value of the plate spring is set to be 1000N/mm, and the error is plus or minus 5 percent.
Has the advantages that:
1. compared with the traditional metal material, the density of the fiber composite material used in the invention is greatly reduced, the weight of the bogie is obviously reduced, and the lightweight effect is achieved.
2. The deformation displacement of the plate spring is completely compression deformation, and an additional displacement release device is not required to be arranged for the plate spring.
3. The composite plate spring is elliptical in shape, the thickness of the composite plate spring decreases from the left end to the right end to the upper end and the lower end, the inner sides of the upper end and the lower end are provided with V-shaped bulges, the outer sides of the upper end and the lower end are provided with planes, the change is continuous, and stress concentration can be greatly reduced.
Drawings
FIG. 1 is a schematic view of a leaf spring assembly of the present invention;
description of the drawings: 1. an outer frame; 2. a base plate; 3. an upper fastener; 4. a baffle plate; 5. a vertical stop; 6. a plate spring body; 7. a lower fastener; 8. a high-frequency shock pad; 9. an axle box;
FIG. 2 is an exploded view of the upper end structure of the leaf spring body;
description of the drawings: 1. an outer frame; 2. a base plate; 3. an upper fastener; 4. a baffle plate; 5. a vertical stop; 6. a plate spring body;
FIG. 3 is a schematic view showing the direction of the leaf spring layering of the train bogie of the present invention.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
As shown in fig. 1 to 3, the composite leaf spring with an integral structure for a train bogie provided by the invention can simultaneously meet the requirements of space occupation reduction, light weight and strength of the train bogie, and the rigidity value of a leaf spring assembly is 1000N/mm, and the error is plus or minus 5%. The shape of the plate spring body is an ellipse, and the thickness of the plate spring body gradually decreases from the vertex of the long axis and the vertex of the short axis of the ellipse to the middle. The plate spring body is made of glass fiber prepreg (wherein the main components of the glass fiber prepreg are glass fiber and epoxy resin), the variable thickness section is adopted, the change has continuity, and stress concentration can be reduced. The plate spring body is connected with the upper end bogie and the lower end high-frequency shock pad through bolts.
Fig. 1 is a schematic view of a composite leaf spring assembly of unitary construction for a train bogie. The plate spring body 6 is of an oval layered structure, the thickness of the plate spring body decreases from the left end to the right end to the upper end and the lower end, V-shaped bulges are arranged on the inner sides of the upper end and the lower end, and the outer sides of the upper end and the lower end are provided with planes, so that stress concentration can be greatly reduced. The plate spring body 6 is fixed to the upper outer frame 1 and the lower high-frequency cushion 8 by bolts via fasteners 4. Rubber backing plates are added on the contact surfaces of the outer parts of the upper end and the lower end of the plate spring body and other parts (as shown in figure 2). The vertical backstop 5 inside the oval plate spring is fixedly connected with the baffle 3 through a bolt through an upper fastener (wherein the connection and fixation of the outer framework 1, the plate spring body 6 and the vertical backstop 5 share the same fastener and bolt). The axle box 9 is positioned below the high-frequency shock pad 8 and is connected with the shock pad through a spring.
Fig. 2 is a schematic view of a glass fiber prepreg lay-up direction of the plate spring body. The laminating sequence of the prepreg is [0 °/0 °/90 °/0 ° ]]ns。
It should be understood that the above description of specific embodiments is not intended to limit the invention, and any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (1)
1. The utility model provides a train is overall structure combined material leaf spring for bogie which characterized in that: the plate spring body is made of glass fiber reinforced composite materials, the upper end of the plate spring body is connected to a bogie, an axle box is positioned at the lower side of the plate spring, a high-frequency shock pad is added between the axle box and the plate spring, the connection modes are all bolt connection, the width of the plate spring along the axial direction of an axle is kept consistent, the thickness of the plate spring is gradually increased from the upper end and the lower end of an ellipse to the left end and the right end, the overall rigidity value of the plate spring is constant, the appearance of the plate spring body is in an elliptic laminated structure, the layers of the plate spring are gradually changed along the radian direction, the layers are symmetrical along the thickness center layer, the thickness is gradually decreased from the left end and the right end of the ellipse to the upper end and the lower end, the inner sides of the middle parts of the upper end and the lower end of the plate spring are provided with V-shaped bulges, the outer sides are set as planes, the laminated structure is made of glass fiber unidirectional prepreg, wherein the matrix is epoxy resin, the laminated structure is formed by stacking the prepreg, and the layers are in the order of [0 DEG/90 DEG/0 DEG ]/ns, the connection mode of leaf spring body and upper end bogie and lower extreme high frequency shock pad is bolted connection, and the contact surface of lower extreme and external member and high frequency shock pad need add the backing plate on the leaf spring body, the vertical rigidity value of assembly of leaf spring is 1000N/mm, and the error is positive and negative 5%, and upper portion framework and leaf spring junction bolt assembly mode are from bottom to top, and lower part high frequency shock pad and leaf spring junction bolt assembly mode are top-down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952927.5A CN113501022B (en) | 2021-08-19 | 2021-08-19 | Integral structure composite material plate spring for train bogie |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110952927.5A CN113501022B (en) | 2021-08-19 | 2021-08-19 | Integral structure composite material plate spring for train bogie |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113501022A CN113501022A (en) | 2021-10-15 |
| CN113501022B true CN113501022B (en) | 2022-04-26 |
Family
ID=78016478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110952927.5A Active CN113501022B (en) | 2021-08-19 | 2021-08-19 | Integral structure composite material plate spring for train bogie |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113501022B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB154416A (en) * | 1919-10-28 | 1920-12-02 | Nils Aall Krag | Improvements in retaining means for points for tramways and the like |
| GB157023A (en) * | 1920-04-19 | 1921-01-20 | Alexander Charles Otto | Improvements in or relating to the spring suspension of railway wagons, and other vehicles |
| CN208855641U (en) * | 2017-07-25 | 2019-05-14 | 川崎重工业株式会社 | Leaf spring for configuration in railroad truck and the bogie for rail truck |
| CN112026825A (en) * | 2020-09-25 | 2020-12-04 | 中车长春轨道客车股份有限公司 | Composite plate spring structure for primary suspension system of railway vehicle |
| CN112046534A (en) * | 2020-09-25 | 2020-12-08 | 中车长春轨道客车股份有限公司 | Primary suspension system of railway vehicle adopting composite plate spring |
| CN112644550A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Steering frame |
| CN112644541A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Primary suspension device, bogie and rail vehicle |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE377108C (en) * | 1923-06-11 | Heinrich Augsburger | Leaf spring arrangement, especially for axle springs of railroad cars | |
| JP3157352U (en) * | 2009-11-27 | 2010-02-12 | 浩 倉林 | Elliptical leaf spring unit, elliptical multi-stage leaf spring device, vertical vibration damping device, horizontal uniaxial vibration damping device, and upper and lower floor seismic isolation device |
| CN102673676B (en) * | 2012-04-13 | 2015-11-25 | 机科发展科技股份有限公司 | Many train heavy duty mobile robot AGV |
-
2021
- 2021-08-19 CN CN202110952927.5A patent/CN113501022B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB154416A (en) * | 1919-10-28 | 1920-12-02 | Nils Aall Krag | Improvements in retaining means for points for tramways and the like |
| GB157023A (en) * | 1920-04-19 | 1921-01-20 | Alexander Charles Otto | Improvements in or relating to the spring suspension of railway wagons, and other vehicles |
| CN208855641U (en) * | 2017-07-25 | 2019-05-14 | 川崎重工业株式会社 | Leaf spring for configuration in railroad truck and the bogie for rail truck |
| CN112644550A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Steering frame |
| CN112644541A (en) * | 2019-10-10 | 2021-04-13 | 中车唐山机车车辆有限公司 | Primary suspension device, bogie and rail vehicle |
| CN112026825A (en) * | 2020-09-25 | 2020-12-04 | 中车长春轨道客车股份有限公司 | Composite plate spring structure for primary suspension system of railway vehicle |
| CN112046534A (en) * | 2020-09-25 | 2020-12-08 | 中车长春轨道客车股份有限公司 | Primary suspension system of railway vehicle adopting composite plate spring |
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| Publication number | Publication date |
|---|---|
| CN113501022A (en) | 2021-10-15 |
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