CN108058558B - Longitudinal FRP plate spring ontology and its assembly structure - Google Patents
Longitudinal FRP plate spring ontology and its assembly structure Download PDFInfo
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- CN108058558B CN108058558B CN201610967711.5A CN201610967711A CN108058558B CN 108058558 B CN108058558 B CN 108058558B CN 201610967711 A CN201610967711 A CN 201610967711A CN 108058558 B CN108058558 B CN 108058558B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G11/00—Resilient suspensions characterised by arrangement, location or kind of springs
- B60G11/02—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only
- B60G11/04—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only arranged substantially parallel to the longitudinal axis of the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2202/00—Indexing codes relating to the type of spring, damper or actuator
- B60G2202/10—Type of spring
- B60G2202/11—Leaf spring
- B60G2202/112—Leaf spring longitudinally arranged
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/70—Materials used in suspensions
- B60G2206/71—Light weight materials
- B60G2206/7101—Fiber-reinforced plastics [FRP]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/81—Shaping
- B60G2206/8101—Shaping by casting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/81—Shaping
- B60G2206/8102—Shaping by stamping
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/81—Shaping
- B60G2206/8102—Shaping by stamping
- B60G2206/81022—Shaping by stamping by forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60G—VEHICLE SUSPENSION ARRANGEMENTS
- B60G2206/00—Indexing codes related to the manufacturing of suspensions: constructional features, the materials used, procedures or tools
- B60G2206/01—Constructional features of suspension elements, e.g. arms, dampers, springs
- B60G2206/80—Manufacturing procedures
- B60G2206/82—Joining
- B60G2206/821—Joining by gluing
Abstract
The present invention provides longitudinal FRP plate spring ontology and its assembly structure, wherein any one place at FRP plate spring ontology both ends to middle part is all equal perpendicular to the sectional area in face in thickness, guarantees continuity and uniformity of the reinforcing fiber from ontology one end to the other end in FRP plate spring ontology；From middle part to both ends thickness alongst by thick gradually thinning, the uniformity of proof stress；Do not change sectional area, the width at appropriate constriction plate end reduces the stress of the combination generation of FRP plate spring body end and connector.FRP spring body of the invention can greatly improve durability, reduce stress, bench test number everywhere and reach 1,000,000 times or more, be 10 times or more of existing steel plate life of plate spring;Compared to the weight that leaf spring can mitigate 70% or so;Have many advantages, such as that good damping property, higher corrosion resistance, " safe breaking property " are good.Longitudinal FRP plate spring assembly structure of the application, including longitudinal FRP plate spring ontology, upper cover plate, lower pallet, rubber mat, end ear etc., FRP plate spring ontology and its assembly structure have the function of existing miscellaneous longitudinal steel plate leaf spring.
Description
Technical field
The invention belongs to field of automobile suspension, especially longitudinal FRP plate spring ontology and its assembly structure.
Background technique
Leaf spring can be longitudinal or horizontal on automobile.The latter is because longitudinal force will be transmitted, it is necessary to be arranged additional
It is oriented to load transfer device, makes that structure is complicated, quality increases, so only being applied in a small number of light, minicars.Longitudinal leaf spring can pass
Various power and torque are passed, there is guide function, and structure is simple, therefore is used widely on automobile, modern longitudinal steel plate
Spring broad form is as shown in Figure 1.
The middle part of 3 ' of prior art leaf spring wants two 4 ' of U bolt to be fixed on 5 ' of axle, and front end passes through leaf spring
31 ' of preceding grasswort and 2 ' of fore-stock of 3 ' itself is fixed on 1 ' of vehicle body (vehicle frame)；Rear end passes through the rear volume of 3 ' of leaf spring itself
32 ' of ear, lifting lug 6 and after-poppet 7 are fixed on 1 ' of vehicle body (vehicle frame), as shown in Figure 2.
Existing 3 ' of leaf spring is made of multi-disc, and the width of monolithic body is constant, and thickness has cross-section and two kinds of variable cross-section,
Variable cross-section and heterogeneous linear variable cross-section and parabola variable cross-section, since stress is equal everywhere for parabola variable cross-section, changeable section plate spring is more
Using parabola variable cross-section.
With development in science and technology, composite material plate spring is gradually used for automotive suspension spring element.Composite material specific strength compares mould
Amount is high, there is good fatigue performance, damping vibration attenuation performance and corrosion resistance therefore to do elastic element using compound, can
The ride comfort and comfort of vehicle are greatly improved, and quality is only 1/4 or so of leaf spring, not only effectively improves fuel oil
Effect also reduces unsprung mass, reduces and vibrates under spring, while the service life greatly improves, no replacement is required within the scope of integeral vehicle life
Elastic element, vehicle uses and maintenance cost is relatively low.
There are many composite material type, are generally made of reinforcing material and basis material, for example reinforced concrete is also compound
Material, mixed mud are matrixes, and reinforcing bar is reinforcing material.Composite material used in existing automotive engineering composite material plate spring is fiber
Reinforced plastics, English are Fibre-Reinforced Plastic, and abbreviation FRP, the reinforcing material of leaf spring is mainly glass fibre,
Also there are carbon fiber or glass fibre and carbon fiber composition fibre bundle, basis material is the materials such as epoxy resin, therefore, compound
It is more scientific that material leaf spring is referred to as FRP plate spring.
The characteristics of FRP plate spring, is compared with traditional metal material, and maximum feature is exactly that specific strength is high, specific modulus is high, heatproof
Property the advantages that good, good impact resistance, designability be strong, 70% or more loss of weight, safety fracture.It is now external many in volume production vehicle
Upper to use FRP plate spring, lot of domestic and international auto vendor is all in exploitation FRP plate spring.
The front suspension of sprinter light passenger train of running quickly uses horizontal FRP plate spring, and 4 points of soft fixations are used when installation, are using model
In enclosing, section is equal everywhere, and section thickness and width are also constant, guarantees in FRP plate spring the arrangement uniformity of fiber and continuously
It is disconnected, the reliability of suspension is greatly improved, ride comfort is also very good, and is convenient for processing and forming.
If it is desired to substituting existing longitudinal leaf spring with FRP plate spring, must be just fixed at middle part as leaf spring
On axle, both ends are connected on vehicle body.But due to being difficult to make grasswort at longitudinal FRP plate spring ontology both ends, it is therefore necessary to do
Out similar to the component of grasswort, longitudinal FRP plate spring both ends are connected on vehicle body；The middle part of longitudinal FRP plate spring will pass through U bolt
It is fixed on axle, due to the effect of moment of flexure, stress of the longitudinal FRP plate spring at U bolt is maximum, on the outside of U bolt very
The phenomenon that being easy to appear fibrous fracture.
Existing FRP plate spring moulding process mainly has continuous fiber to wind (Filament Winding) technique, molding
(Compressing Molding) technique, pultrude process (Pultrusion Molding).Fiber winding method can utilize computer
Control winding parameter and technique, give full play to the intensity of winding fiber, and product fatigue performance is good, and high reliablity, cost is relatively low,
But structure is complicated for Wound Dies, and the demand to equipment is high.The FRP plate spring of producer's research and development all uses mould pressing process mostly now, essence
Degree is high relative to other techniques, and after formed product, surface is smooth, does not need to carry out secondary operation, pressure technique being capable of molding structure
Complicated component, because being disposal molding, price is lower when batch production.But the product endurance of mould pressing process is poor, protects
Warm production time longer unsuitable batch production.Pultrude process is simple, and production is high-efficient, can carry out continuously shaped, production
The stability of product is good, reproducible.But shape of product is single, and transverse strength is low, and few producers use.
Although the reliability service life of the longitudinal FRP plate spring of the prior art is slightly larger than leaf spring, due to longitudinal FRP plate spring
Higher cost, use cost is certainly also relatively high, is difficult that user is allowed to receive, and most producer is only at conceptual phase.Meanwhile
The longitudinal FRP plate spring of the prior art is all monolithic leaf spring, and a rigidity is difficult to meet the vehicle that load change is big, needs different-stiffness
Needs.Therefore, the structure for only improving longitudinal FRP plate spring ontology and its assembly, greatly improves its service life, in addition existing
The advantages of FRP plate spring, could be received by users.
Summary of the invention
The object of the present invention is to provide a kind of light weights, the longitudinal FRP plate spring ontology that fatigue life is long, safe and reliable.
It is a further object of the present invention to provide longitudinal FRP plate spring assembly structure, convenient for longitudinal FRP plate spring ontology fixation and
Connection, and substitute the various forms of leaf springs of the prior art.
The present invention is achieved by the following technical solutions:
Longitudinal FRP plate spring ontology is using fiber as reinforcing material, the strip using resin as the section of basis material for rectangle
Shape composite material entity.
In width direction relative symmetry face bilateral symmetry, face in the thickness of the plane of symmetry and longitudinal FRP plate spring ontology
Intersection is straight line at middle part and end, is circular arc between middle part and end.
Any one place at both ends to middle part is rectangle perpendicular to the section of intersection, and rectangular section product is all equal, makes longitudinal FRP
Reinforcing fiber keeps continuity and uniformity from ontology one end to the other end in leaf spring ontology, to guarantee longitudinal FRP plate spring sheet
Body performance uniformity, and improve the combination of Material reinforcement fiber and the microcosmic face of matrix, greatly improve longitudinal FRP plate spring ontology can
By property.
The middle part in face and both ends are plane in thickness, are arc surface between middle part and both ends, the upper and lower both sides in rectangular section are arrived
Face is equidistant in thickness；Performance section, contraction section, plate end section, institute after installation are respectively followed successively by from the fixed section at middle part to both ends
It states fixed section to be fixed on axle by U bolt, effect of the plate end section by power, from the fixed section two sides to the plate
The thickness of end section meets following thickness formula:
Wherein, h be thickness, the S of the longitudinal FRP plate spring ontology be sectional area, [σ] be FRP plate spring material it is allowable curved
Transverse stress, PmaxTo act on the maximum force at plate end, x be maximum force PmaxPosition to the FRP plate spring ontology
The distance of upper arbitrary point.
The fixed section is the equal rectangle of sectional area, thickness h1And width S1Constant, length is slightly larger than two U bolts
Outer lateral extent, according to the thickness formula, thickness h1It is maximum.
The performance section is that the equal rectangle of sectional area is passed according to the thickness formula from middle part toward end direction thickness
Subtract and is progressively smaller until minimum thickness h2, keep stress suffered by the longitudinal FRP plate spring ontology uniform, width be gradually increased until
Maximum width b2。
The plate end section distributive plural via hole, perpendicular to upper and lower plane, the plate end section is thickness h at via hole center3And width
Spend b3Rectangle constant, exterior cross-section is equal, actual cross-sectional area is much smaller than sectional area S, and reinforcing fiber at the via hole center
It is cut off, for the intensity for guaranteeing the plate end section, increases thickness h3, reduce width b3, while width narrows convenient for the peace at plate end
Dress.
The contraction section is the equal rectangle of sectional area, from the minimum thickness h of the performance section2Toward end direction thickness by
It is cumulative big until plate end Duan Houduh3, width is progressively smaller until plate end section width b3。
The thickness and width of the longitudinal FRP plate spring ontology is characterized in: h1×b1=h2×b2=h3×b3=S, h1> h3>
h2。
The rigidity k and thickness h of the longitudinal FRP plate spring ontology2It is directly proportional, adjust the thickness of the longitudinal FRP plate spring ontology
Degree, make the longitudinal FRP plate spring ontology meet suspension rigidity requirement and the thickness formula, determine final thickness h1、h2、h3。
The width of the fixed section is most narrow, and after the fixed fixed section of U bolt, the longitudinal FRP plate spring ontology exists
It will not front and back play when vehicle braking or starting.
The fixed section between the performance section, the performance section between the contraction section, the contraction section arrives
Outer surface between the plate end section is that the curved surfaces such as circular arc smoothly transit, and has fillet in the non-die joint side of rectangular section.
The longitudinal FRP plate spring assembly includes longitudinal FRP plate spring ontology, upper cover plate, lower pallet, rubber mat, end ear.
The upper cover plate is symmetrical with respect to median plane, and respectively there are a recess in two sides, and there are a positioning pin, the positioning pin in middle part
When for the leaf spring installation and position of vehicle bridge positions.
The lower pallet is symmetrical with respect to median plane, and respectively there are a protrusive board in two sides, and there are a positioning pin, the positioning pin in middle part
When for the leaf spring installation and position of vehicle bridge positions.
The rubber mat is rectangle, and there is circular counter bore in centre.
The end ear is made of two planar sections and an annulus section, the plane on two planar sections be parallel to each other and
And surrounding is aligned, and has a plurality of bolt through-holes respectively on two planar sections, the bolt through-hole of the upper and lower planar section is corresponding
Position is concentric；The inner cylinder face of the annulus section is for installing leaf spring bushing.
The knot of three kinds of FRP plate spring assemblies is formed by the longitudinal FRP plate spring ontology, upper cover plate, lower pallet, rubber mat, end ear
Configuration formula: longitudinal FRP monolithic plate spring assembly, the longitudinal FRP major-minor spring assembly of overhead, the longitudinal FRP major-minor spring assembly of underneath type.
The longitudinal FRP monolithic plate spring assembly has the longitudinal FRP plate spring ontology, in the longitudinal FRP single piece plate
It is followed successively by upper cover plate, rubber mat, longitudinal FRP plate spring ontology, rubber mat and lower pallet from top to bottom in the middle part of spring assembly, in the upper cover
It is coated with glue between plate, rubber mat, longitudinal FRP plate spring ontology, rubber mat and the contact surface of lower pallet, contact surface is made to bond together.
Protrusive board on the lower pallet is inserted into the recess of the upper cover plate, when with U bolt and nut by the longitudinal FRP
After major-minor spring assembly is fixed on axle, there is the gap 2mm between the upper cover plate and the lower pallet；The positioning of the upper cover plate
The positioning pin coaxial line of pin and the lower pallet.
Upper and lower two planar sections of end ear have a plurality of bolt through-holes respectively, and with the longitudinal FRP plate spring sheet
The arrangement of the via hole at body both ends, quantity are identical with diameter；Two end ears are respectively arranged in the longitudinal FRP plate spring ontology
Both ends are bonded in its contact surface with glue, and tighten fixation by its via hole with a plurality of bolt and nuts.
The end ear of the main spring front end FRP passes through on bushing fore-stock fixed on vehicle body；The main spring of FRP
The end ear on rear end is connected on the after-poppet on vehicle body by bushing, lifting lug.
The longitudinal FRP major-minor spring assembly of overhead has two longitudinal FRP plate spring ontologies, and one as the vertical of main spring
It sets FRP plate spring ontology and is called the main spring of overhead FRP, another is called overhead FRP pair as the longitudinal FRP plate spring ontology of auxiliary spring
Spring, the main spring of overhead FRP is identical with the length of the fixed section on overhead FRP auxiliary spring, and the performance section is shunk
Section, the length of plate end section are different.
The middle part of the longitudinal FRP major-minor spring assembly of overhead is followed successively by upper cover plate, rubber mat, overhead FRP from top to bottom
Auxiliary spring, partition, the main spring of overhead FRP, rubber mat and lower pallet, the upper cover plate, rubber mat, overhead FRP auxiliary spring, partition, on
It sets and is coated with glue between the main spring of formula FRP, rubber mat and the contact surface of lower pallet, contact surface is made to bond together.
Protrusive board on the lower pallet is inserted into the recess of the upper cover plate, when with U bolt and nut by the longitudinal FRP
After major-minor spring assembly is fixed on axle, there is the gap 2mm between the upper cover plate and the lower pallet；The positioning of the upper cover plate
The positioning pin coaxial line of pin and the lower pallet.
The both ends of the main spring of overhead FRP are equipped with the end ear, and the installation method of the end ear and the longitudinal FRP are mono-
The installation method of the end ear of piece plate spring assembly is identical.
The both ends of the overhead FRP auxiliary spring are equipped with wearing plate.
The longitudinal FRP major-minor spring assembly of underneath type has two longitudinal FRP plate spring ontologies, and one as the vertical of main spring
It sets FRP plate spring ontology and is called the main spring of underneath type FRP, another is called underneath type FRP pair as the longitudinal FRP plate spring ontology of auxiliary spring
Spring, the main spring of underneath type FRP is identical with the length of the fixed section on underneath type FRP auxiliary spring, and the performance section is shunk
Section, the length of plate end section are different.
The middle part of the longitudinal FRP major-minor spring assembly of underneath type is followed successively by upper cover plate, rubber mat, underneath type FRP from top to bottom
Main spring, underneath type FRP auxiliary spring, rubber mat and lower pallet, in the upper cover plate, rubber mat, the main spring of underneath type FRP, underneath type FRP pair
It is coated with glue between spring, rubber mat and the contact surface of lower pallet, contact surface is made to bond together.
Protrusive board on the lower pallet is inserted into the recess of the upper cover plate, when with U bolt and nut by the longitudinal FRP
After major-minor spring assembly is fixed on axle, there is the gap 2mm between the upper cover plate and the lower pallet；The positioning of the upper cover plate
The positioning pin coaxial line of pin and the lower pallet.
The both ends of the main spring of underneath type FRP are equipped with the end ear, and the installation method of the end ear and the longitudinal FRP are mono-
The installation method of the end ear of piece plate spring assembly is identical.
The longitudinal FRP major-minor spring assembly of underneath type with load increase, from middle part to the main spring of two sides underneath type FRP with
Underneath type FRP auxiliary spring comes into contact with, and contact position studs with wear-resistant material.
Forming the end ear by two planar sections and an annulus section has monoblock type and split type, strikes out in monoblock type
Shape, cast form, forging and molding；Each component has stamping, cast form, forging and molding in split type, to meet the FRP
The needs of plate spring assembly difference stress, different installation forms.
The plate end section for extending the longitudinal FRP plate spring ontology, is formed by bending the annulus section by extension, described
FRP plate spring ontology and the end ear form one.
Under the premise of meeting the thickness formula, by adjusting rigidity and camber, the longitudinal FRP plate spring ontology and its
The various forms of longitudinal leaf springs of the alternative prior art of assembly structure.
The beneficial effects of the present invention are:
In longitudinal FRP plate spring assembly in above-mentioned technical proposal, longitudinal FRP plate spring ontology by very light weight fiber reinforcement
Plastics are formed, and weight only has 1/5 or so of the comparable leaf spring of rigidity, substantially reduce the weight of suspension；Sectional area is all equal,
Reinforcing fiber in FRP plate spring ontology is set to keep continuity and uniformity from ontology one end to the other end, to guarantee FRP plate spring sheet
Body performance uniformity, and the combination of Material reinforcement fiber and the microcosmic face of matrix is improved, greatly improve the reliable of FRP plate spring ontology
Property, it is 10 times or more of the leaf spring service life of the prior art that rack reliability test, which reaches 1,000,000 times or more, is substantially saved
The use cost of plate spring suspension brackets；The damping capacity of fibre reinforced plastics is higher than conventional metals, while between reinforcing material and matrix
Micro interface shock absorption it is good so that FRP plate spring ontology have good damping property；Fiber content in FRP plate spring ontology
Thousands of, after few fibers fracture, stress be will disperse in other fibers, will not be broken at once, and only rigidity is gradually reduced,
The security performance of FRP plate spring is better than traditional leaf spring, has the advantages that " safe breaking property " is good.
The upper surface of fixed section of longitudinal FRP plate spring assembly between upper cover plate, between the main spring of FRP and FRP auxiliary spring, it is longitudinal
Rubber mat is respectively provided with below the fixed section of FRP plate spring assembly between lower pallet, rubber mat is coated with glue in two sides up and down, makes to contact
Face bonds together, and so that the main spring of upper cover plate, FRP, FRP auxiliary spring, lower pallet, rubber mat is formed one at middle part, makes FRP plate spring ontology
That is born is each to stress, is flexibly transferred on rigid upper cover plate and lower pallet, reduces FRP plate spring ontology by bending force
And shearing force, the thickness in addition increasing plate end section reduces stress, to extend the fatigue life of longitudinal FRP plate spring assembly and raising
The security performance of longitudinal FRP plate spring assembly.
Other features and advantages of the present invention will the following detailed description will be given in the detailed implementation section.
Detailed description of the invention
Fig. 1 is prior art leaf spring；
Fig. 2 is the scheme of installation of prior art leaf spring；
Fig. 3 is longitudinal FRP plate spring ontology schematic diagram；
Fig. 4 is longitudinal FRP plate spring ontology main view；
Fig. 5 is the top view of Fig. 4；
Fig. 6 is the sectional view at N1-N1, N2-N2, N3-N3 of Fig. 5；
Fig. 7 is the schematic diagram of longitudinal FRP monolithic plate spring assembly；
Fig. 8 is the main view of longitudinal FRP monolithic plate spring assembly；
Fig. 9 is the top view of Fig. 8；
Figure 10 is the A-A cross-sectional view of Fig. 8；
Figure 11 is the B-B cross-sectional view of Fig. 8；
Figure 12 is the C-C cross-sectional view of Fig. 8；
Figure 13 is the enlarged view at I of Figure 10；
Figure 14 is the enlarged view at II of Figure 10；
Figure 15 is the schematic diagram of the longitudinal FRP major-minor spring assembly of overhead；
Figure 16 is the main view of the longitudinal FRP major-minor spring assembly of overhead；
Figure 17 is the D-D cross-sectional view of Figure 16；
Figure 18 is enlarged drawing at the III of Figure 17；
Figure 19 is enlarged drawing at the IV of Figure 17；
Figure 20 is the schematic diagram of the longitudinal FRP major-minor spring assembly of underneath type；
Figure 21 is the schematic diagram of the longitudinal FRP major-minor spring assembly of underneath type；
Figure 22 is the E-E cross-sectional view of Figure 21；
Figure 23 is enlarged drawing at the V of Figure 22；
Figure 24 is a kind of integrated end ear structure schematic diagram；
Figure 25 is a kind of split type end ear structure schematic diagram；
Figure 26 is the schematic diagram with the end ear of FRP plate spring ontology one；
Figure 27 is that FRP plate spring substitutes existing leaf spring schematic diagram；
Figure 28 is leaf spring stress diagram.
Description of symbols
1 ' vehicle body, 2 ' fore-stocks, 3 ' leaf springs, grasswort before 31 ', grasswort after 32 ', 4 ' U bolts, 5 ' axles, 6 ' are hung
Ear, 7 ' after-poppets, 1 longitudinal FRP plate spring ontology, 11 fixed sections, 12 performance sections, 13 changeover portions, 14 plate ends section, 15 via holes, 2 ends
Ear, 21 forging and stamping end ears, ear on 201,202 lower plates, 3 front linings, 4 upper cover plates, positioning pin on 41,42 recesses, 5 lower pallets, 51
Lower positioning pin, 52 protrusive boards, 6 back bushes, 7 rubber mats, 8 overhead FRP auxiliary springs, 81 end chamfers, 9 wearing plates, 10 overhead FRP masters
Spring, 11 partitions, 12 lower gaskets, the 13 main springs of underneath type FRP, 14 underneath type FRP auxiliary springs.
Specific embodiment
Carry out the technical solution that the present invention will be described in detail by the following examples, embodiment below is merely exemplary, only
It can be used to explanation and illustration technical solution of the present invention, and be not to be construed as the limitation to technical solution of the present invention.
The present invention provides longitudinal FRP plate spring ontology and its assembly structure, as shown in Fig. 3 to Figure 25, including longitudinal FRP plate spring
Ontology 1, end ear 2, front lining 3, upper cover plate 4, back bush 6, rubber mat 7, overhead FRP auxiliary spring 8, wearing plate 9, overhead FRP master
The main spring 13 of spring 10, partition 11, lower gasket 12, underneath type FRP, underneath type FRP auxiliary spring 14 etc..
Longitudinal FRP plate spring ontology 1 is using long fibre as reinforcing material, the length using resin as the section of basis material for rectangle
Bar shaped composite material entity is completed using the methods of continuous fiber winding and molding.
Continuous fiber winding process is that sharp computerized control winds the trend of parameter and continuous fiber, keeps complex root continuous
Fiber is wound into the FRP plate spring mold of rolling with the line-spacing of certain tension, variation, and winding finishes cut staple and is molded into
Type.High-visible from 3, Fig. 4, Fig. 5, Fig. 6, longitudinal FRP plate spring ontology 1 after molding is in width direction relative symmetry face or so pair
Claim, the intersection in face is straight line at middle part and end in the thickness of the plane of symmetry and longitudinal FRP plate spring ontology 1, middle part and end it
Between be circular arc；Any one place at both ends to middle part is rectangle perpendicular to the section of intersection, and rectangular section product is all equal, is made longitudinal
Reinforcing fiber keeps continuity and uniformity from ontology one end to the other end in FRP plate spring ontology 1, to guarantee longitudinal FRP plate
1 performance uniformity of spring ontology, and the combination of Material reinforcement fiber and the microcosmic face of matrix is improved, give full play to the strong of winding fiber
Degree, greatly improves the reliability of longitudinal FRP plate spring ontology 1.
It is arc surface, rectangle between middle part and both ends from Fig. 5, Fig. 6 as it can be seen that the middle part in face and both ends are plane in thickness
The upper and lower both sides in section face into thickness is equidistant；Performance section 12 is respectively followed successively by both ends from the fixed section 11 at middle part, is shunk
Section 13, plate end section 14, fixed section 11 is fixed on axle by U bolt after installation, 14 effect by power of plate end section, from described
The thickness of 11 two sides of fixed section to the plate end section 14 meets following thickness formula:
Wherein, h be the thickness of FRP plate spring ontology 1, S be sectional area, [σ] be FRP plate spring material permissible bending stress,
PmaxTo act on the maximum force at plate end, x be maximum force PmaxPosition to 1 power of FRP plate spring plate body
Active force side arbitrary point distance.
It is also clear as it can be seen that fixed section 11 is the equal rectangle of sectional area, thickness h from 3, Fig. 4, Fig. 5, Fig. 61With width b1No
Become, the outer lateral extent of slightly larger than two U bolts of length, according to the thickness formula, thickness h1It is maximum；Performance section 12 is sectional area
Equal rectangle is progressively smaller until minimum thickness h from middle part toward end direction thickness-tapered according to the thickness formula2, make
Stress suffered by the longitudinal FRP plate spring ontology is uniform, and width is gradually increased until maximum width b2；Plate end section 14 is thickness h3
With width b3Rectangle constant, exterior cross-section is equal, the small installation convenient for plate end of width；Contraction section 13 is sectional area
Equal rectangle, from the minimum thickness h of performance section 122It is gradually increased toward end direction thickness until plate end Duan Houduh3, width by
It is decrescence small until plate end section width b3, that is, longitudinal FRP plate spring ontology 1 length and width after molding is characterized in: h1×b1
=h2×b2=h3×b3=S, h1> h3> h2。
The rigidity k and thickness h of longitudinal FRP plate spring ontology 12It is directly proportional, the thickness of longitudinal FRP plate spring ontology 1 is adjusted, makes to indulge
Set FRP plate spring ontology 1 meet suspension rigidity requirement and the thickness formula, it is final to determine thickness h 1, h2, h3.Fixed section 11
Width it is most narrow, after the fixed fixed section 11 of U bolt, longitudinal FRP plate spring ontology 1 will not front and back in vehicle braking or starting
Play.
Be also shown from 3, Fig. 4, Fig. 5, Fig. 6, fixed section 11 between performance section 12, performance section 12 to contraction section 13 it
Between, contraction section 13 to the outer surface between plate end section 14 be that the curved surfaces such as circular arc smoothly transit, in the non-die joint side of rectangular section
There is fillet.
Longitudinal FRP plate spring ontology 1 makes a call to 4 uniformly distributed via holes 15 both ends are each after forming, for the connection at both ends, via hole 15
Center perpendicular to plate end section 14 upper and lower plane.
As shown in Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 13, Figure 15, Figure 16, Figure 17, Figure 18, Figure 20, Figure 21, Figure 22, Figure 23,
Upper cover plate 4 is symmetrical with respect to median plane, and respectively there are a recess 42 in two sides, there is a hole in the middle part of upper cover plate 4, and positioning pin 41 is straight by two
Diameter cylindrical body composition of different sizes, out of interior the diameter small end force fit hole surveyed positioning pin 41, when for leaf spring installation
It is positioned with the position of vehicle bridge；Lower pallet 5 is symmetrical with respect to median plane, and respectively there are a protrusive board 52 in two sides, and middle part has one to have a hole,
Positioning pin 51 is made of two different cylindrical bodies of diameter, is surveyed from interior by 51 force fit hole of positioning pin, is used for leaf spring
The positioning of the when installation and position of vehicle bridge.
As shown in Figure 13, Figure 18, Figure 23, rubber mat is rectangle, and there is circular counter bore in centre, for avoiding positioning pin 41 and determining
Position pin 51.As shown in figure 18,11 middle part of partition is without counterbore.
As shown in Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 15, Figure 16, Figure 17, Figure 20, Figure 21, Figure 22, Figure 14 it is apparent as it can be seen that
End ear 2 is formed by stamping, is made of two planar sections 21 and an annulus section 22, and the plane on two planar sections is mutually flat
It goes and surrounding is aligned, there is 4 bolt through-holes 23 on two planar sections respectively, the bolt through-hole of upper and lower planar section is corresponding
Position is concentric；The inner cylinder face of annulus section 22 is for installing leaf spring bushing, and when end, ear 2 is installed on the two of longitudinal FRP plate spring ontology 1
It is equivalent to 3 ' leaf springs behind end, grasswort before 31 ', the effect of grasswort after 32 ', as shown in Fig. 2, Figure 11, Figure 12.
2 end ears 2 are first respectively arranged in the both ends of longitudinal FRP plate spring ontology 1, are bonded in its contact surface with glue, by 4
A bolt passes through the via hole 15 on bolt through-hole 23 and plate end 14 on the ear 2 of end, and tightens fixation with nut, then from top to bottom
Successively upper cover plate 4, rubber mat 7, longitudinal FRP plate spring ontology 1, rubber mat 7 and lower pallet 5 are fitted together, the protrusive board 52 on lower pallet 5
It is inserted into the recess 42 of the upper cover plate 4, the contact of upper cover plate 4, rubber mat 7, longitudinal FRP plate spring ontology 1, rubber mat 7 and lower pallet 5
Glue is coated between face, reinforcing makes contact surface bond together, before finally loading onto respectively in the annulus section 22 of the end ear 1 at both ends
Bushing 3 and back bush 6 complete the installation of longitudinal FRP single plate spring assembly, as Fig. 7, Fig. 8, Fig. 9, Figure 10, Figure 11, Figure 12, Figure 13,
Shown in Figure 14.
As shown in Figure 15, Figure 16, Figure 17, Figure 18, Figure 19, the longitudinal FRP major-minor spring assembly of overhead have two it is described longitudinal
FRP plate spring ontology, a longitudinal FRP plate spring ontology as main spring are called the main spring 10 of overhead FRP, another is as auxiliary spring
Longitudinal FRP plate spring ontology is called overhead FRP auxiliary spring 8, the fixed section 11 on the main spring 10 of overhead FRP and overhead FRP auxiliary spring 8
Length it is identical, performance section 12, contraction section 13, the length of plate end section 14 are different.
It is identical as the installation of longitudinal FRP single plate spring assembly, 2 end ears 2 are first respectively arranged in the main spring 10 of overhead FRP
Both ends are bonded in its contact surface with glue, and 4 bolts are passed through to the via hole 15 on the bolt through-hole 23 and plate end 14 on the ear 2 of end,
And fixation is tightened with nut, 2 wearing plate 9 and 2 lower gaskets 12 are then fixed on overhead FRP auxiliary spring 8 with bolt and nut
Both ends, then from top to bottom successively by upper cover plate 4, rubber mat 7, overhead FRP auxiliary spring 8, partition 11, the main spring 10 of overhead FRP, glue
Pad 7 and lower pallet 5 are fitted together, and the protrusive board 52 on lower pallet 5 is inserted into the recess 42 of the upper cover plate 4, upper cover plate 4, rubber mat
7, it is coated with glue between the main spring 10 of overhead FRP auxiliary spring 8, partition 11, overhead FRP, rubber mat 7 and the contact surface of lower pallet 5, added
Power makes contact surface bond together, and serves as a contrast before finally loading onto respectively in the annulus section 22 of the end ear 1 at main 10 both ends of spring overhead FRP
Set 3 and back bush 6 complete the installation of the longitudinal FRP major-minor spring assembly of overhead, in addition, for the end of optimization overhead FRP auxiliary spring 8
Portion's stress increases separately end chamfer 81 at both ends, as shown in Figure 14, Figure 15, Figure 16, Figure 17, Figure 18.
As shown in Figure 20, Figure 21, Figure 22, Figure 23, the longitudinal FRP major-minor spring assembly of underneath type has two longitudinal FRP plates
Spring ontology, a longitudinal FRP plate spring ontology as main spring are called the main spring 13 of underneath type FRP, another is as the longitudinal of auxiliary spring
FRP plate spring ontology is called underneath type FRP auxiliary spring 14, the main spring 13 of underneath type FRP and the fixed section 11 on underneath type FRP auxiliary spring 14
Length is identical, and performance section 12, contraction section 13, the length of plate end section 14 are different.
It is identical as the installation of longitudinal FRP single plate spring assembly, 2 end ears 2 are first respectively arranged in the main spring 13 of underneath type FRP
Both ends are bonded in its contact surface with glue, and 4 bolts are passed through to the via hole 15 on the bolt through-hole 23 and plate end 14 on the ear 2 of end,
And fixation is tightened with nut, then from top to bottom successively by upper cover plate 4, rubber mat 7, the main spring 13 of underneath type FRP, underneath type FRP pair
Spring 14, rubber mat 7 and lower pallet 5 are fitted together, and the protrusive board 52 on lower pallet 5 is inserted into the recess 42 of the upper cover plate 4, upper cover plate
4, it is coated with glue between the main spring 13 of rubber mat 7, underneath type FRP, underneath type FRP auxiliary spring 14, rubber mat 7 and the contact surface of lower pallet 5, added
Power makes contact surface bond together, and serves as a contrast before finally loading onto respectively in the annulus section 22 of the end ear 1 at main 13 both ends of spring underneath type FRP
Set 3 and back bush 6 complete the installation of the longitudinal FRP major-minor spring assembly of underneath type, as shown in Figure 20, Figure 21, Figure 22, Figure 23.
The end ear 2 of the front end of longitudinal FRP plate spring assembly passes through on the fore-stock fixed on vehicle body of front lining 3；On rear end
End ear 2 be connected on the after-poppet on vehicle body by back bush 6, lifting lug.
The above-mentioned end ear 2 of the present invention is stamping parts, to meet the FRP plate spring assembly difference stress, different installation forms
Need can be used casting, forging, as shown in figure 24；Split type end ear can also be used, as shown in figure 25, hold ear 2 by upper ear
201, lower plate 202 is composed.
The plate end section that may extend away the FRP plate spring ontology, the annulus section 22 of end ear 2 is formed by bending by extension,
Longitudinal FRP plate spring ontology 1 is set to form one with end ear 2, as shown in figure 26.
Under the premise of meeting the thickness formula, by adjusting rigidity and camber, longitudinal FRP plate spring ontology and its assembly
The various forms of longitudinal leaf springs of the alternative prior art of structure, as shown in figure 27.
The mentality of designing of longitudinal FRP plate spring ontology in the present embodiment is as follows:
Leaf spring can be simplified to cantilever shown in Figure 28 from U bolt bearing to the position of plate end power in use
Girder construction, according to material mechanics principle, when plate end is by maximum force PmaxEffect when, away from position distance be x it is any
A little suffered bending stress are as follows:
Due to longitudinal FRP plate spring ontology 1 must keep everywhere sectional area it is constant, according to above formula, it is ensured that any point
The thickness of intensity, longitudinal FRP plate spring ontology 1 must satisfy formula (1), i.e., thickness formula above-mentioned:
Wherein, M is moment of flexure, and Z is section factor, h be thickness, the S of longitudinal FRP plate spring ontology 1 be sectional area, [σ] is FRP
Permissible bending stress, the P of leaf spring materialmaxTo act on the maximum force at plate end, x be maximum force PmaxPosition arrive
The distance of longitudinal 1 arbitrary point of FRP plate spring plate body.
For a specifically used longitudinal FRP plate spring assembly, [σ], Pmax, S be constant, by formula (1) it is found that plate
Hold stress minimum, middle part U bolt bearing stress is maximum, and making leaf spring, stress is equal uniformly everywhere, is being answered according to formula (1)
Power general goal increases the thickness of leaf spring, conversely, reducing leaf spring thickness at the small place of stress.
Equally, according to material mechanics principle, as shown in figure 28, maximum force PmaxPosition rigidity are as follows:
Wherein, E is the elasticity modulus of material；I is the moment of inertia；L is the length of longitudinal FRP plate spring ontology 1.
The longitudinal FRP plate spring ontology 1 certain to a length, rigidity k and h2It is directly proportional, so, it is thick to increase leaf spring
Degree, can increase rigidity k quickly.
While keeping sectional area constant, the thickness of adjustment leaf spring everywhere, and meet formula (1), formula (2) simultaneously,
Determine the thickness h of the bearing 11 of longitudinal FRP plate spring ontology 11, the widest part thickness h2With plate end thickness h3, make longitudinal FRP plate spring
Stress is relatively uniform everywhere for ontology 1, and flexible.
Although the present invention is described in detail according to above-described embodiment, protection scope of the present invention is simultaneously not limited
It in above-described embodiment, and is only limited by claim, those of ordinary skill in the art can be easily to above-described embodiment
A variety of variations, modification, replacement and deformation are carried out, but and without departing from protection scope of the present invention.
Claims (6)
1. a kind of longitudinal FRP major-minor spring assembly of overhead, including longitudinal FRP plate spring ontology, upper cover plate, lower pallet, rubber mat, end
Ear；
The longitudinal FRP plate spring ontology is using fiber as reinforcing material, the strip using resin as the section of basis material for rectangle
Shape composite material entity；In width direction relative symmetry face bilateral symmetry, the thickness of the plane of symmetry and longitudinal FRP plate spring ontology
The intersection in middle face is straight line at middle part and end, is circular arc between middle part and end；Any one place at both ends to middle part is vertical
It is rectangle in the section of intersection, rectangular section product is all equal；The middle part in face and both ends are plane in thickness, between middle part and both ends
For arc surface, the upper and lower both sides in rectangular section face into thickness is equidistant；From the fixed section at middle part to each the being followed successively by property in both ends
Energy section, contraction section, plate end section, the fixed section is fixed on axle by U bolt after installation, work of the plate end section by power
With the thickness from the fixed section two sides to the plate end section meets following thickness formula:
Wherein, h is that the bending allowable that thickness, the S of the longitudinal FRP plate spring ontology are sectional area, [σ] is FRP plate spring material is answered
Power, PmaxTo act on the maximum force at plate end, x be maximum force PmaxPosition to the longitudinal FRP plate spring ontology
The distance of upper arbitrary point；
The fixed section is the equal rectangle of sectional area, thickness h1With width b1Constant, slightly larger than two U bolts of length are solid
Surely the center located is away from according to the thickness formula, thickness h1It is maximum；
The performance section is the equal rectangle of sectional area, according to the thickness formula, from middle part toward end direction thickness-tapered by
It is decrescence small until minimum thickness h2, keep stress suffered by the longitudinal FRP plate spring ontology uniform, width is gradually increased until maximum
Width b2；
The plate end section distributive plural via hole, perpendicular to upper and lower plane, the plate end section is thickness h at via hole center3With width b3
Rectangle constant, exterior cross-section is equal, actual cross-sectional area is much smaller than sectional area S at the via hole center, and reinforcing fiber is cut
It is disconnected, for the intensity for guaranteeing the plate end section, increase thickness h3, reduce width b3, while the narrow installation convenient for plate end of width；
The contraction section is the equal rectangle of sectional area, from the minimum thickness h of the performance section2Gradually increase toward end direction thickness
Greatly until plate end Duan Houduh3, width is progressively smaller until plate end section width b3；
The thickness and width of the longitudinal FRP plate spring ontology is characterized in: h1×b1=h2×b2=h3×b3=S, h1> h3> h2；
The upper cover plate is symmetrical with respect to median plane, and respectively there are a recess in two sides, and there is a positioning pin at middle part, and the positioning pin is used for
When leaf spring the is installed and position of vehicle bridge positions；
The lower pallet is symmetrical with respect to median plane, and respectively there are a protrusive board in two sides, and there is a positioning pin at middle part, and the positioning pin is used for
When leaf spring the is installed and position of vehicle bridge positions；
The rubber mat is rectangle, and there is circular counter bore in centre；
The end ear is made of two planar sections and an annulus section, and the plane on two planar sections is parallel to each other and four
Week is aligned, and has a plurality of bolt through-holes respectively on two planar sections, the bolt through-hole corresponding position of the upper and lower planar section
With one heart；The inner cylinder face of the annulus section is for installing leaf spring bushing；
It is characterized in that, the longitudinal FRP major-minor spring assembly of overhead has two longitudinal FRP plate spring ontologies, one of them
Longitudinal FRP plate spring ontology as main spring is called the main spring of overhead FRP, another as auxiliary spring longitudinal FRP plate spring ontology
Overhead FRP auxiliary spring is done, the main spring of overhead FRP is identical with the length of the fixed section on overhead FRP auxiliary spring, described
Performance section, contraction section, the length of plate end section are different；
The middle part of the longitudinal FRP major-minor spring assembly of overhead be followed successively by from top to bottom upper cover plate, rubber mat, overhead FRP auxiliary spring,
Partition, the main spring of overhead FRP, rubber mat and lower pallet, in the upper cover plate, rubber mat, overhead FRP auxiliary spring, partition, overhead
It is coated with glue between the main spring of FRP, rubber mat and the contact surface of lower pallet, contact surface is made to bond together；
Protrusive board on the lower pallet is inserted into the recess of the upper cover plate, when with U bolt and nut by the longitudinal FRP major-minor
After spring assembly is fixed on axle, there is the gap 2mm between the upper cover plate and the lower pallet up and down；The positioning of the upper cover plate
The positioning pin coaxial line of pin and the lower pallet；
The both ends of the main spring of overhead FRP are equipped with the end ear, and upper and lower two planar sections of end ear have plural number respectively
A bolt through-hole, and it is identical as the arrangement of the via hole at the main spring both ends the overhead FRP, quantity and diameter；Two end ears
The both ends of the main spring of overhead FRP are respectively arranged in, are bonded in its contact surface with glue, and passed through with a plurality of bolt and nuts
Its via hole tightens fixation；
The both ends of the overhead FRP auxiliary spring are equipped with wearing plate.
2. a kind of longitudinal FRP major-minor spring assembly of underneath type, including longitudinal FRP plate spring ontology, upper cover plate, lower pallet, rubber mat, end
Ear；
The longitudinal FRP plate spring ontology is using fiber as reinforcing material, the strip using resin as the section of basis material for rectangle
Shape composite material entity；In width direction relative symmetry face bilateral symmetry, the thickness of the plane of symmetry and longitudinal FRP plate spring ontology
The intersection in middle face is straight line at middle part and end, is circular arc between middle part and end；Any one place at both ends to middle part is vertical
It is rectangle in the section of intersection, rectangular section product is all equal；The middle part in face and both ends are plane in thickness, between middle part and both ends
For arc surface, the upper and lower both sides in rectangular section face into thickness is equidistant；From the fixed section at middle part to each the being followed successively by property in both ends
Energy section, contraction section, plate end section, the fixed section is fixed on axle by U bolt after installation, work of the plate end section by power
With the thickness from the fixed section two sides to the plate end section meets following thickness formula:
Wherein, h is that the bending allowable that thickness, the S of the longitudinal FRP plate spring ontology are sectional area, [σ] is FRP plate spring material is answered
Power, PmaxTo act on the maximum force at plate end, x be maximum force PmaxPosition to the longitudinal FRP plate spring ontology
The distance of upper arbitrary point；
The fixed section is the equal rectangle of sectional area, thickness h1With width b1Constant, slightly larger than two U bolts of length are solid
Surely the center located is away from according to the thickness formula, thickness h1It is maximum；
The performance section is the equal rectangle of sectional area, according to the thickness formula, from middle part toward end direction thickness-tapered by
It is decrescence small until minimum thickness h2, keep stress suffered by the longitudinal FRP plate spring ontology uniform, width is gradually increased until maximum
Width b2；
The plate end section distributive plural via hole, perpendicular to upper and lower plane, the plate end section is thickness h at via hole center3With width b3
Rectangle constant, exterior cross-section is equal, actual cross-sectional area is much smaller than sectional area S at the via hole center, and reinforcing fiber is cut
It is disconnected, for the intensity for guaranteeing the plate end section, increase thickness h3, reduce width b3, while the narrow installation convenient for plate end of width；
The contraction section is the equal rectangle of sectional area, from the minimum thickness h of the performance section2Gradually increase toward end direction thickness
Greatly until plate end Duan Houduh3, width is progressively smaller until plate end section width b3；
The thickness and width of the longitudinal FRP plate spring ontology is characterized in: h1×b1=h2×b2=h3×b3=S, h1> h3> h2；
The upper cover plate is symmetrical with respect to median plane, and respectively there are a recess in two sides, and there is a positioning pin at middle part, and the positioning pin is used for
When leaf spring the is installed and position of vehicle bridge positions；
The lower pallet is symmetrical with respect to median plane, and respectively there are a protrusive board in two sides, and there is a positioning pin at middle part, and the positioning pin is used for
When leaf spring the is installed and position of vehicle bridge positions；
The rubber mat is rectangle, and there is circular counter bore in centre；
The end ear is made of two planar sections and an annulus section, and the plane on two planar sections is parallel to each other and four
Week is aligned, and has a plurality of bolt through-holes respectively on two planar sections, the bolt through-hole corresponding position of the upper and lower planar section
With one heart；The inner cylinder face of the annulus section is for installing leaf spring bushing；
It is characterized in that, the longitudinal FRP major-minor spring assembly of underneath type has two longitudinal FRP plate spring ontologies, one of them
Longitudinal FRP plate spring ontology as main spring is called the main spring of underneath type FRP, another as auxiliary spring longitudinal FRP plate spring ontology
Underneath type FRP auxiliary spring is done, the main spring of underneath type FRP is identical with the length of the fixed section on underneath type FRP auxiliary spring, described
Performance section, contraction section, the length of plate end section are different；
The middle part of the longitudinal FRP major-minor spring assembly of underneath type be followed successively by from top to bottom upper cover plate, rubber mat, the main spring of underneath type FRP,
Underneath type FRP auxiliary spring, rubber mat and lower pallet, in the upper cover plate, rubber mat, the main spring of underneath type FRP, underneath type FRP auxiliary spring, rubber mat
It is coated with glue between the contact surface of lower pallet, contact surface is made to bond together；
Protrusive board on the lower pallet is inserted into the recess of the upper cover plate, when with U bolt and nut by the longitudinal FRP major-minor
After spring assembly is fixed on axle, there is the gap 2mm between the upper cover plate and the lower pallet up and down；The positioning of the upper cover plate
The positioning pin coaxial line of pin and the lower pallet；
The both ends of the main spring of underneath type FRP are equipped with the end ear, and upper and lower two planar sections of end ear have plural number respectively
A bolt through-hole, and it is identical as the arrangement of the via hole at the main spring both ends the underneath type FRP, quantity and diameter；Two end ears
The both ends of the main spring of underneath type FRP are respectively arranged in, are bonded in its contact surface with glue, and passed through with a plurality of bolt and nuts
Its via hole tightens fixation；
The longitudinal FRP major-minor spring assembly of underneath type with load increase, from middle part to the main spring of two sides underneath type FRP with it is underlying
Formula FRP auxiliary spring comes into contact with, and contact position studs with wear-resistant material.
3. longitudinal FRP major-minor spring assembly according to claim 1 or claim 2, it is characterised in that: the longitudinal FRP plate spring ontology
Rigidity k and thickness h2It is directly proportional, the thickness of the longitudinal FRP plate spring ontology is adjusted, meets the longitudinal FRP plate spring ontology outstanding
The rigidity requirement of frame and the thickness formula, determine final thickness h1、h2、h3；
The fixed section between the performance section, the performance section between the contraction section, the contraction section is to described
Outer surface between the section of plate end is that the curved surfaces such as circular arc smoothly transit, and has fillet in the non-die joint side of rectangular section；
The width of the fixed section is most narrow, and after the fixed fixed section of U bolt, the longitudinal FRP plate spring ontology is in vehicle
It will not front and back play when braking or starting.
4. longitudinal FRP major-minor spring assembly according to claim 1 or 2, it is characterised in that: the end ear using stamping parts,
Casting or forging.
5. longitudinal FRP major-minor spring assembly according to claim 1 or 2, it is characterised in that: the end ear uses split type end
Ear.
6. longitudinal FRP major-minor spring assembly according to claim 1 or claim 2, it is characterised in that: extend the plate end section, extension
Divide the annulus section for forming end ear, the longitudinal FRP plate spring ontology and the end ear form one.
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| CN201610967711.5A CN108058558B (en) | 2016-11-05 | 2016-11-05 | Longitudinal FRP plate spring ontology and its assembly structure |
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| CN201610967711.5A CN108058558B (en) | 2016-11-05 | 2016-11-05 | Longitudinal FRP plate spring ontology and its assembly structure |
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| CN106864191B (en) * | 2017-01-25 | 2019-02-19 | 安徽江淮汽车集团股份有限公司 | A kind of FRP plate spring and its assembly |
| CN111810564A (en) * | 2020-06-16 | 2020-10-23 | 东风汽车底盘系统有限公司 | Single leaf spring for heavy truck |
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| JP5548516B2 (en) * | 2010-05-14 | 2014-07-16 | 日本発條株式会社 | Fiber reinforced plastic spring |
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| US20140191486A1 (en) * | 2013-01-10 | 2014-07-10 | Hendrickson Usa, L.L.C. | Multi-tapered suspension component |
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| EP0240676A1 (en) * | 1986-02-18 | 1987-10-14 | HOESCH-ISOCAR Faserverstärkte Federn Gesellschaft m.b.H. | Fastening member, especially adapted for central fixing, for a leaf spring made of fibre-reinforced synthetic material |
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Effective date of registration: 20200603 Address after: 231200 intersection of Hudong road and Paihe Avenue, economic and Technological Development Zone, Feixi County, Hefei City, Anhui Province (No.3 workshop of Hefei Wandu Yuanxiang Refrigeration Technology Co., Ltd.) Patentee after: Hefei Qianwei composite material Co.,Ltd. Address before: Cooperative road Shushan District of Hefei City, Anhui province 230022 No. 27 Greentown Lily apartment chuyang yuan 4-1502 Patentee before: Liu Shouyin |