CN104976261A - Composite material leaf spring assembly of automobile and assembling method thereof - Google Patents
Composite material leaf spring assembly of automobile and assembling method thereof Download PDFInfo
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- CN104976261A CN104976261A CN201510334196.2A CN201510334196A CN104976261A CN 104976261 A CN104976261 A CN 104976261A CN 201510334196 A CN201510334196 A CN 201510334196A CN 104976261 A CN104976261 A CN 104976261A
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- composite material
- spring
- leaf spring
- material plate
- plate spring
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Classifications
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- 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
- F16F1/00—Springs
- F16F1/02—Springs made of steel or other material having low internal friction; Wound, torsion, leaf, cup, ring or the like springs, the material of the spring not being relevant
- F16F1/18—Leaf springs
- F16F1/185—Leaf springs characterised by shape or design of individual leaves
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Springs (AREA)
Abstract
The invention discloses a composite material leaf spring assembly of an automobile. The composite material leaf spring assembly of the automobile comprises a composite material leaf spring body, a lower metal clamping plate, an upper metal clamping plate and a U-type bolt metal clamping plate, wherein the lower metal clamping plate, the composite material leaf spring body, the upper metal clamping plate and the U-type bolt metal clamping plate are stacked sequentially from bottom to top and then are clamped and fixed with two U-type bolts. Metal joints are connected to two ends of the composite material leaf spring body through bolts. The composite material leaf spring body is made of E fiberglass/polyurethane composite materials and is integrally formed through a high-pressure RTM process. The fiber layer of the composite material leaf spring body is of zero degree, and the fiber volume content of the composite material leaf spring body is 58%. The weight of the composite material leaf spring is reduced, and meanwhile the service life of the composite material leaf spring of the automobile is prolonged. The composite material leaf spring assembly of the automobile is low in cost and easy to assemble and maintain. The invention further discloses an assembling method of the composite material leaf spring assembly of the automobile.
Description
Technical field
The present invention relates to the leaf spring assembly of automotive suspension, be specifically related to a kind of automotive composite material leaf spring assembly, belong to auto parts and components field.
Background technique
Along with becoming increasingly conspicuous of energy crisis and environmental crisis, the requirement of people to automotive light weight technology is more and more higher.Composite material plate spring has significant advantage in lightweight, therefore becomes the hot issue that Chinese scholars is studied unexpectedly mutually.Through development for many years and research, utilize fiber-reinforced resin matrix compound material manufacture the concept of leaf springs of car and advantage gradually understand by domestic industry personnel.
As technology-intensive industries, the development need new material of automobile and new process.And the premium properties of composite material exactly meets the needs of development of automobile.The materials such as the steel that auto parts and components are used and alloy start progressively to be replaced by composite material.
For the composite material in automotive industry, mainly use polymer matrix composites both at home and abroad, comprise glass fibre reinforced composion and carbon fibre reinforced composite.Polymer matrix composites have light-high-strength, performance can design, there is good corrosion resistant candle property, have good damping, easily shaping, the features such as technique is simple.In addition, the fatigue limit of polymer matrix composites is higher, and counter stress concentrates receptance little.
As technology-intensive industries, the development need new material of automobile and new process.And the premium properties of composite material exactly meets the needs of development of automobile.Along with the development of composite material new technology and new process these years, and the domestic reference to foreign technology and introduction, the composite material parts that the automobile factory of China or component factory produce begins to take shape.
Through retrieval, find that the leaf spring technology of existing employing composite material mainly contains:
Disclosing by CN 204077274U composite material plate spring structural body portion that a kind of uniform section amasss is that width is alongst broadened gradually by narrow from the middle to both ends; Thickness, by thick thinning gradually, makes its cross-section area equal all the time; In composite material plate spring body midsection position, yoke configurations is utilized to be fixedly connected with composite material plate spring main body.
Disclose the soft fixing monolithic composite material plate spring suspension frame structure of a kind of plate end by CN IO4029579A, wherein composite material single plate spring is middle part is uniform section, and middle part is the design of parabola change from big to small to front end and middle part to the section cross section of rear end.
Disclose a kind of automotive composite material leaf spring assembly and assembling method thereof by CN IO2700377A, this leaf spring is composite material single plate spring, carries out connection location, do not have bolt positioning hole in the middle of leaf spring by U bolt.
By finding the research of prior art, although done the correlative study of a large amount of composite material plate spring at home, but apply to going back seldom on automobile, and domestic composite material plate spring design only meets part test needs, can't meet the needs of actual entrucking.Domestic studied composite material plate spring spring body design does not all adopt parabolic shape, and in use stress distribution is uneven to cause composite material plate spring, and fatigue life reduces; Generally fail correctly to locate with vehicle bridge, or orientation type is unreliable; The design of composite material plate spring metal joint is perfect not, the huge force and moment that is subject to of metal joint when failing to consider leaf spring work, and metal joint and spring body contact segment fail rounding off, fail to play a protective role to composite material contact segment.
Summary of the invention
The object of the invention is: meeting automobile on the basis of leaf spring performance requirement, a kind of automotive composite material leaf spring assembly is provided, improves the lightweight level of composite material plate spring, improve the working life of spring for motor car simultaneously, and cost is low, be easy to I& M.
The object of the invention is to be achieved through the following technical solutions:
A kind of automotive composite material leaf spring assembly, comprise composite material plate spring spring body, lower metal splint, upper metal splint, U bolt metal splint, be fixedly clamped by two U bolts after lower metal splint, composite material plate spring spring body, upper metal splint, U bolt metal splint stack from the bottom to top successively, composite material plate spring spring body two ends respectively bolt are connected with metal joint.
Described a kind of automotive composite material leaf spring assembly, wherein, composite material plate spring spring is as single plate spring.
Described a kind of automotive composite material leaf spring assembly, wherein, intermediate portion, composite material plate spring spring body bottom surface is provided with spring body lower convex platform, and the upper surface of described lower metal splint is provided with groove and coordinates with composite material plate spring spring body lower convex platform.
Described a kind of automotive composite material leaf spring assembly, wherein, spring body lower convex platform is many peak structure.
Described a kind of automotive composite material leaf spring assembly, wherein, the bottom surface of spring body lower convex platform is polygonal.
Described a kind of automotive composite material leaf spring assembly, wherein, the bottom surface of spring body lower convex platform is oval.
Described a kind of automotive composite material leaf spring assembly, wherein, composite material plate spring spring is as parabolic shaped structure.
Described a kind of automotive composite material leaf spring assembly, wherein, composite material plate spring spring body adopts E glass fibre/compound polyurethane material to make, one-body molded through high pressure RTM technique, the fiber laying of composite material plate spring spring body is 0 degree, and fiber volume fraction scope is 40%-70%.
Described a kind of automotive composite material leaf spring assembly, wherein, metal joint is provided with elongate structure at itself and composite material plate spring spring body attachment portion.
The present invention provides a kind of assembly method of automotive composite material leaf spring assembly simultaneously, comprises the following steps:
By bolt and binder, two metal joints are fixed on the two ends of composite material plate spring spring body;
Vehicle bridge, lower metal splint, monolithic composite material plate spring, upper metal splint, U bolt metal splint are located closed assembly from lower to upper successively, and the U bolt mounting hole inserted by U bolt in vehicle bridge is installed fixing, undertaken clamping and fixing by U bolt, complete assembly;
The front connector of above-mentioned assembly is assemblied on vehicle frame leaf spring hinging par;
The rear joint of above-mentioned assembly is assemblied on vehicle frame hanger lower link point, completes whole assemblings of automotive composite material leaf spring assembly.
The present invention, on the basis of current rear overhang rack composite material plate spring assembly, improves its structure, Lay up design.Do like this and can reduce design cost, extend the fatigue life of leaf spring, realize composite material plate spring entrucking application, and realize car load lightweight, improve vehicle dynamic quality and fuel economy, make being promoted and application of composite material plate spring.The present invention has obviously advantage compared with existing automotive composite material leaf spring:
(1) the spring figure shape of composite material plate spring adopts the parabola plate spring shape that stock utilization is higher, has the advantages that lightweight level is high and fatigue life is long;
(2) without the need to holing in the middle part of composite material plate spring;
(3) effectively improve the working life of composite material plate spring;
(4) entrucking application can be realized;
(5) adopt high pressure RTM technique one-body molded, batch production can be realized, reduce cost of production.
(6) butt joint designs, and does not affect original assembly method, and bolt and lining and original automobile component general.
(7) lower convex platform and lower metal splint are designed, enlarge active surface, ensure the stability in composite material plate spring using process and Security.
Accompanying drawing explanation
Fig. 1 (a) is automotive composite material leaf spring assembly plan view of the present invention
Fig. 1 (b) is automotive composite material leaf spring assembly graphics of the present invention
Fig. 2 (a) is composite material plate spring spring body plan view
Fig. 2 (b) is composite material plate spring spring body graphics
Fig. 3 (a) is composite material plate spring spring body worm's eye view
Fig. 3 (b) is the oval schematic bottom view of composite material plate spring spring body lower convex platform
Fig. 3 (c) is composite material plate spring spring body lower convex platform Hexagon schematic bottom view
Fig. 3 (d) is composite material plate spring spring body lower convex platform many peak structure graphics
Fig. 4 is upper metal splint graphics
Fig. 5 (a) is U bolt metal splint plan view
Fig. 5 (b) is U bolt metal splint graphics
Fig. 6 (a) is lower metal splint plan view
Fig. 6 (b) is lower metal splint graphics
Fig. 7 is rear metal joint graphics
Fig. 8 is rubber bushing plan view
Fig. 9 (a) is front metal joint plan view
Fig. 9 (b) is front metal joint graphics
Figure 10 is bolt graphics
In figure: 1.U type bolt metal clamping plate, 2. go up metal splint, metal joint 3., 4. composite material plate spring spring body, 5. descends metal splint, metal joint 6., 7. bolt, 8. spring body lower convex platform, 9. rubber bushing
Embodiment
With reference to accompanying drawing, in conjunction with embodiment, the present invention will be further described.
As shown in Fig. 1 (a), Fig. 1 (b), a kind of automotive composite material leaf spring assembly, has a composite material plate spring spring body, a lower metal splint 5, upper metal splint 2, U bolt metal splint 1, two metal joints 6,3 and four rubber bushings 9.U bolt metal splint 1, upper metal splint 2, monolithic composite material plate spring spring body 4, lower metal splint 5 are fixedly clamped by two U bolts after from top to bottom stacking successively, in a pair U bolt adopts, Eight characters oblique pull is arranged on composite material plate spring assembly, rubber bushing 9 is assembled in the joint at leaf spring two ends, and by leaf spring articulating point corresponding on jiont treatment to vehicle frame.Upper surface groove and the composite material plate spring spring body lower convex platform 8 of lower metal splint 5 coordinate, the lower surface boss of lower metal splint 5 corresponding with in vehicle bridge centre bolt pilot hole coordinate; Metal joint and composite material plate spring are connected by bolt 7 and are connected the reliable connection of realization with bonding.Two metal joints 6,3 are connected to composite material plate spring spring body 4 two ends respectively by bolt 7 and are adhesively fixed with spring body 4; Four rubber bushings are arranged in two metal joints by interference fit.Automotive composite material leaf spring assembly is arranged in vehicle bridge by lower metal splint 5, is arranged on leaf spring articulating point and hanger by rubber bushing simultaneously.
Composite material plate spring spring body 4 is single plate spring.
As shown in Fig. 2 (a), Fig. 2 (b), composite material plate spring spring body 4 takes parabolic shaped structure, spring body 4 body width is 70mm, spring body 4 two ends are respectively provided with two bolt holes, for being fixedly connected with the metal joint 3,6 at two ends, spring body 4 is 60mm with the width of metal joint joint, as shown in Fig. 3 (a).Composite material plate spring assembly does not need centre bolt to locate and is connected, therefore need at composite material plate spring spring body central bore.
As shown in Fig. 3 (a), intermediate portion, composite material plate spring spring body 4 bottom surface is provided with spring body lower convex platform 8, so both can realize locating with lower metal splint, and reliably can transmit longitudinal loading again; Owing to being dangerouse cross-section in the middle part of leaf spring, therefore carrying out thickening design at the intermediate portion of spring body and can strengthen the intensity of spring in dangerouse cross-section pointedly.Spring body lower convex platform 8 can be cuboid, cylindrical body etc., and its bottom surface is polygonal, ellipse etc., and as shown in Fig. 3 (b), 3 (c), spring body lower convex platform 8 can be also many peak structure, as shown in Fig. 3 (d).
Composite material plate spring spring body 4 adopts E glass fibre/compound polyurethane material to make, and one-body molded through high pressure RTM technique, the fiber laying of composite material plate spring spring body is 0 degree, fatigue life and creep-resistant property better; The fiber volume fraction of composite material plate spring spring body is chosen within the scope of 40%-70% according to process requirements, is preferably 58%, lower to the requirement of production technology and manufacturing mechanism, is easy to batch production.
Described two metal joints have front metal joint 6 and rear metal joint 3 respectively, metal joint takes elongate structure at itself and spring body 4 attachment portion, because metal joint and composite material plate spring spring body are bolted, during leaf spring work, its joint can produce larger stress, that is composite material plate spring two ends and joint junction are the weak spots of leaf spring, by lengthening metal joint length, and then strengthen the area of contact at metal joint and leaf spring spring body two ends, spring body two ends contact segment is played a protective role; Front metal joint 6 has obvious arc transition with composite material plate spring spring body 4 joint on its hanger.
As shown in Figure 4, upper metal splint 2 is slab construction, effectively avoids because U bolt metal splint 1 and the inconsistent stress caused of spring body 4 width are concentrated; The lower limb of upper metal splint 2 can adopt chamfered transition.
Lower metal splint takes spill to design, and its upper surface intermediate portion is provided with groove, for coordinating with the spring body lower convex platform of composite material plate spring spring body middle lower surface, reliably transmits the longitudinal force that leaf spring is subject to.Because spill design bond area is large, this structure also reliably can transmit the lateral force that leaf spring is subject to.As shown in Fig. 6 (a), Fig. 6 (b), lower metal splint 5 carries out thickening process, and there is arc transition both sides.
The assembly method of described a kind of automotive composite material leaf spring assembly, comprises following installation step:
By bolt and binder, two metal joints are fixed on the two ends of composite material plate spring;
Vehicle bridge, lower metal splint, monolithic composite material plate spring, upper metal splint, U bolt metal splint are located closed assembly from lower to upper successively; Install U bolt, the U bolt mounting hole inserted by U bolt in vehicle bridge is installed fixing, lower metal splint, monolithic composite material plate spring, upper metal splint, U bolt metal splint and vehicle bridge is undertaken clamping and fixing by two U bolts;
The front connector of above-mentioned assembly is assemblied on vehicle frame leaf spring hinging par;
The rear joint of above-mentioned assembly is assemblied on vehicle frame hanger lower link point;
The boss of the lower metal splint of above-mentioned assembly is coordinated with the centre bolt pilot hole of vehicle bridge, completes whole assemblings of automotive composite material leaf spring assembly.
Claims (10)
1. an automotive composite material leaf spring assembly, it is characterized in that, comprise composite material plate spring spring body, lower metal splint, upper metal splint, U bolt metal splint, be fixedly clamped by two U bolts after lower metal splint, composite material plate spring spring body, upper metal splint, U bolt metal splint stack from the bottom to top successively, composite material plate spring spring body two ends respectively bolt are connected with metal joint.
2., according to a kind of automotive composite material leaf spring assembly according to claim 1, it is characterized in that, described composite material plate spring spring is as single plate spring.
3. according to a kind of automotive composite material leaf spring assembly according to claim 1, it is characterized in that, intermediate portion, described composite material plate spring spring body bottom surface is provided with spring body lower convex platform, and the upper surface of described lower metal splint is provided with groove and coordinates with composite material plate spring spring body lower convex platform.
4. according to a kind of automotive composite material leaf spring assembly according to claim 3, it is characterized in that, described spring body lower convex platform is many peak structure.
5. according to a kind of automotive composite material leaf spring assembly according to claim 3, it is characterized in that, the bottom surface of described spring body lower convex platform is polygonal.
6. according to a kind of automotive composite material leaf spring assembly according to claim 3, it is characterized in that, the bottom surface of described spring body lower convex platform is oval.
7., according to a kind of automotive composite material leaf spring assembly according to claim 1, it is characterized in that, described composite material plate spring spring is as parabolic shaped structure.
8. according to a kind of automotive composite material leaf spring assembly according to claim 1, it is characterized in that, described composite material plate spring spring body adopts E glass fibre/compound polyurethane material to make, one-body molded through high pressure RTM technique, the fiber laying of composite material plate spring spring body is 0 degree, and fiber volume fraction scope is 40%-70%.
9. according to a kind of automotive composite material leaf spring assembly according to claim 1, it is characterized in that, described metal joint is provided with elongate structure at itself and composite material plate spring spring body attachment portion.
10., according to the assembly method of a kind of automotive composite material leaf spring assembly in claim 1-6 described in any one, it is characterized in that, comprise the following steps:
By bolt and binder, two metal joints are fixed on the two ends of composite material plate spring spring body;
Vehicle bridge, lower metal splint, monolithic composite material plate spring, upper metal splint, U bolt metal splint are located closed assembly from lower to upper successively, and the U bolt mounting hole inserted by U bolt in vehicle bridge is installed fixing, undertaken clamping and fixing by U bolt, complete assembly;
The front connector of above-mentioned assembly is assemblied on vehicle frame leaf spring hinging par;
The rear joint of above-mentioned assembly is assemblied on vehicle frame hanger lower link point, completes whole assemblings of automotive composite material leaf spring assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510334196.2A CN104976261A (en) | 2015-06-16 | 2015-06-16 | Composite material leaf spring assembly of automobile and assembling method thereof |
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| CN201510334196.2A CN104976261A (en) | 2015-06-16 | 2015-06-16 | Composite material leaf spring assembly of automobile and assembling method thereof |
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| CN201510334196.2A Pending CN104976261A (en) | 2015-06-16 | 2015-06-16 | Composite material leaf spring assembly of automobile and assembling method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946489A (en) * | 2016-06-30 | 2016-09-21 | 吉林大学 | Automobile plate spring assembly with main and auxiliary springs made from composite material and assembly method for automobile plate spring assembly |
| CN106240271A (en) * | 2016-08-19 | 2016-12-21 | 浙江吉利新能源商用车有限公司 | Air spring suspension systems and there is the vehicle of this suspension system |
| CN107314071A (en) * | 2017-06-30 | 2017-11-03 | 山东联美弹簧科技股份有限公司 | Automobile composite leaf spring |
| CN107606014A (en) * | 2017-09-17 | 2018-01-19 | 刘守银 | A kind of leaf spring and its manufacturing process |
| CN107642573A (en) * | 2017-09-14 | 2018-01-30 | 安徽江淮汽车集团股份有限公司 | A kind of longitudinal FRP composite material plate springs assembly |
| CN109404458A (en) * | 2017-12-12 | 2019-03-01 | 刘守银 | Tension leaf spring assembly and suspension frame structure |
| CN116379080A (en) * | 2023-04-18 | 2023-07-04 | 吉林化工学院 | Novel carbon glass fiber hybrid composite material plate spring |
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| CN102785372A (en) * | 2012-09-04 | 2012-11-21 | 株洲时代新材料科技股份有限公司 | Method for manufacturing fiber reinforced plastic plate type spring |
| CN103748380A (en) * | 2011-08-29 | 2014-04-23 | Zf腓特烈斯哈芬股份公司 | Holder for spring |
| CN104029579A (en) * | 2013-03-07 | 2014-09-10 | 刘守银 | Plate end soft fixing single composite material plate spring suspension structure |
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| US4519591A (en) * | 1982-08-20 | 1985-05-28 | Bush John W | Non-metallic leaf spring structure |
| US4611793A (en) * | 1984-06-21 | 1986-09-16 | Toyota Jidosha Kabushiki Kaisha | Leaf spring assembly for wheel suspension |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105946489A (en) * | 2016-06-30 | 2016-09-21 | 吉林大学 | Automobile plate spring assembly with main and auxiliary springs made from composite material and assembly method for automobile plate spring assembly |
| CN105946489B (en) * | 2016-06-30 | 2018-08-07 | 吉林大学 | A kind of spring for motor car assembly and its assembly method with composite material major-minor spring |
| CN106240271B (en) * | 2016-08-19 | 2019-05-10 | 浙江吉利新能源商用车有限公司 | Air spring suspension systems and vehicle with the suspension system |
| CN106240271A (en) * | 2016-08-19 | 2016-12-21 | 浙江吉利新能源商用车有限公司 | Air spring suspension systems and there is the vehicle of this suspension system |
| CN107314071A (en) * | 2017-06-30 | 2017-11-03 | 山东联美弹簧科技股份有限公司 | Automobile composite leaf spring |
| WO2019001508A1 (en) * | 2017-06-30 | 2019-01-03 | 山东联美弹簧科技股份有限公司 | Automobile composite board spring |
| CN107642573A (en) * | 2017-09-14 | 2018-01-30 | 安徽江淮汽车集团股份有限公司 | A kind of longitudinal FRP composite material plate springs assembly |
| CN107606014A (en) * | 2017-09-17 | 2018-01-19 | 刘守银 | A kind of leaf spring and its manufacturing process |
| CN107606014B (en) * | 2017-09-17 | 2019-11-26 | 刘守银 | A kind of leaf spring and its manufacturing process |
| CN109404458A (en) * | 2017-12-12 | 2019-03-01 | 刘守银 | Tension leaf spring assembly and suspension frame structure |
| CN109404458B (en) * | 2017-12-12 | 2020-09-04 | 安庆安簧汽车零部件有限公司 | Tension blade spring assembly and suspension structure |
| CN116379080A (en) * | 2023-04-18 | 2023-07-04 | 吉林化工学院 | Novel carbon glass fiber hybrid composite material plate spring |
| CN116379080B (en) * | 2023-04-18 | 2023-11-03 | 吉林化工学院 | Novel carbon glass fiber hybrid composite material plate spring |
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