阅读说明：本技术 一种钢基复合纤维增强树脂材料汽车板簧 (A kind of base steel composite fiber-reinforced resin material leaf springs of car ) 是由 孙锐 陈谦 张涛 何涛 徐彬 何中华 于 2019-08-22 设计创作，主要内容包括：本发明提供一种钢基复合纤维增强树脂材料汽车板簧,包括高强度金属钢板,卷耳,中心孔,纤维增强复合树脂材料层,玻璃纤维预浸料,碳纤维预浸料和定位螺栓；所述高强度金属钢板表面包裹有多层、多向的纤维增强复合树脂材料层,且纤维增强复合树脂材料层由玻璃纤维预浸料和碳纤维预浸料混合铺设固化而成；所述高强度金属钢板开设有中心孔,且纤维增强复合树脂材料层和高强度金属钢板通过在中心孔处预埋定位螺栓使两者一体经模压真空成型,这一系列的结构,能够满足重型载货车辆的使用要求,解决了现有复合材料板簧存在的连接开裂及横向刚度薄弱的问题,安全可靠性得到明显提升。(The present invention provides a kind of base steel composite fiber-reinforced resin material leaf springs of car, including high duty metal steel plate, grasswort, centre bore, fiber-reinforced composite resin material layer, glass fibre prepreg, carbon fiber prepreg and positioning bolt；The high duty metal surface of steel plate is enclosed with multilayer, multidirectional fiber-reinforced composite resin material layer, and fiber-reinforced composite resin material layer is laid with and is solidified by glass fibre prepreg and carbon fiber prepreg mixing；The high duty metal steel plate offers centre bore, and fiber-reinforced composite resin material layer and high duty metal steel plate in the pre-buried positioning bolt of central hole by making the two one through being molded vacuum forming, this a series of structure, it can satisfy the requirement of heavy duty truck, solve the problems, such as that the existing connection cracking of existing composite material plate spring and lateral stiffness are weak, security reliability is obviously improved.)

1. a kind of base steel composite fiber-reinforced resin material leaf springs of car, it is characterised in that: the base steel composite fiber-reinforced resin Material leaf springs of car includes high duty metal steel plate (1), grasswort (101), centre bore (102), fiber-reinforced composite resin material Layer (2), glass fibre prepreg (201), carbon fiber prepreg (202) and positioning bolt (3)；The high duty metal steel plate It (1) is plate structure, and high duty metal steel plate (1) both ends are machined with molding grasswort (101) in conjunction；The high intensity Metal foil (1) is coated with multilayer, multidirectional fiber-reinforced composite resin material layer (2), and fiber-reinforced composite resin Material layer (2) is laid with and is solidified by glass fibre prepreg (201) and carbon fiber prepreg (202) mixing；The high intensity Metal foil (1) offers centre bore (102), and fiber-reinforced composite resin material layer (2) and high duty metal steel plate (1) are logical Crossing the pre-buried positioning bolt (3) at centre bore (102) makes the two one through being molded vacuum forming.

2. base steel composite fiber-reinforced resin material leaf springs of car as described in claim 1, it is characterised in that: the high-intensitive gold Belong to steel plate (1) pulls intensity >=1700MPa.

3. base steel composite fiber-reinforced resin material leaf springs of car as described in claim 1, it is characterised in that: the glass fibre Prepreg (201) material is one or more in glass fibre, carbon fiber, aramid fiber or basalt fibre.

4. base steel composite fiber-reinforced resin material leaf springs of car as described in claim 1, it is characterised in that: the carbon fiber is pre- Leaching material (202) material is epoxy resin or polyurethane.

5. base steel composite fiber-reinforced resin material leaf springs of car as described in claim 1, it is characterised in that: the fiber reinforcement The laying direction of composite resin material layer (2) its prepreg carries out multilayer place mat, and the laying of prepreg by leaf spring length direction Angle includes one of 0 °, 85 °, ± 45 ° or multiple combinations, and the laying of prepreg is with a thickness of 5-30mm.

6. base steel composite fiber-reinforced resin material leaf springs of car as described in claim 1, it is characterised in that: the molding vacuum Forming process includes compression molding and vacuum flexible bag moulding, and wherein the pressure of mold process is 4-16MPa, and vacuum ranges exist 0.4-0.6MPa。

Technical field

The invention belongs to field of automobile parts and components, more specifically, in particular to a kind of base steel composite fiber-reinforced resin Material leaf springs of car.

Background technique

Leaf spring is most widely used a kind of elastic element in automotive suspension, if it is but Length discrepancy wide by dry plate The spring beam that is composed of alloy spring piece, have many advantages, such as that structure is simple, process flow is short, development difficulty is relatively low. Large size load-carrying vehicle is mostly metallic steel scutum spring at present, and this leaf spring is fixed on vehicle after using two panels or multi-disc metal laminated Suspension bottom, when wheel bears road shocks power, steel plate is deformed, and plays the role of buffering, vibration damping to vehicle.But it passes The leaf spring of system steel exists than great, and the bad problem of fatigue life bad and resistance to environmental attack performance, higher self weight can drop The cargo dead-weight of low vehicle, while biggish hidden danger is also brought to safety.Especially rise in oil price, environment are protected in recent years The raising of shield and safety and comfort standard, leaf spring are difficult to meet the requirement of future automobile industry gradually.

Based on automotive light weight technology and ecological requirements, composite material plate spring comes into being.It is compound compared with conventional steel leaf spring Material leaf spring has the characteristics that light weight, elastic strain are big, specific strain energy is high, fatigue life is long and " safe breaking property ".Currently, Composite material plate spring has been used including the parts such as Volvo, benz and Nanjing IVECO vehicles vehicle.But by practical dress Vehicle and road test verifying, single composite material plate spring have the following problems:

1, due to composite material self character and structure, leaf spring vertical stiffness technical requirements easily meet, but laterally Rigidity is weaker.When heavy goods vehicles are in road conditions traveling of jolting, when leaf spring is by lateral impact forces or twisting resistance, it is possible to beyond multiple Condensation material transverse direction bulk strength causes the safety problems such as leaf spring cracking, damage.

2, composite material and both ends metal connecting piece are mostly used and are bolted, due to vehicle in braking process leaf spring by Shearing force it is larger, connecting portion composite material may by metal grasswort and connect bolt collective effect power break, thus Influence vehicle safety performance.

Summary of the invention

In order to solve the above technical problem, the present invention provides a kind of base steel composite fiber-reinforced resin material leaf springs of car, It is easy cracking, damage to solve above-mentioned existing single composite material plate spring, composite material is connect with its both ends metal connecting piece The problem of place is easily broken off.

The present invention a kind of purpose and effect of base steel composite fiber-reinforced resin material leaf springs of car, by technology in detail below Means are reached:

A kind of base steel composite fiber-reinforced resin material leaf springs of car, including high duty metal steel plate, grasswort, centre bore, Fiber-reinforced composite resin material layer, glass fibre prepreg, carbon fiber prepreg and positioning bolt；The high duty metal steel Plate is plate structure, and high duty metal steel plate both ends are machined with molding grasswort in conjunction；The high duty metal steel plate It is coated with multilayer, multidirectional fiber-reinforced composite resin material layer, and fiber-reinforced composite resin material layer is by glass fibers Dimension prepreg and carbon fiber prepreg mixing are laid with and solidify；The high duty metal steel plate offers centre bore, and fiber Enhancing composite resin material layer and high duty metal steel plate in the pre-buried positioning bolt of central hole by making the two one through being molded Vacuum forming.

Further, the high duty metal steel plate pulls intensity >=1700MPa.

Further, the glass fibre prepreg material is glass fibre, carbon fiber, aramid fiber or basalt fibre In it is one or more.

Further, the carbon fiber prepreg material is epoxy resin or polyurethane.

Further, the laying direction of its prepreg of the fiber-reinforced composite resin material layer by leaf spring length direction into Row multilayer place mat, and the laying angle of prepreg includes one of 0 °, 85 °, ± 45 ° or multiple combinations, and prepreg Laying is with a thickness of 5-30mm.

Further, the molding vacuum forming process includes compression molding and vacuum flexible bag moulding, wherein mold process Pressure be 4-16MPa, vacuum ranges are in 0.4-0.6MPa.

Further, the preparation method of a kind of base steel composite fiber-reinforced resin material leaf springs of car, this method Steps are as follows:

1, by high duty metal steel plate according to blanking-alignment-drill centers-both ends grasswort-forming heat treatment bending forming, Quenching, the compound leaf spring base steel core material of tempering-shot-peening process machine-shaping；

2, it is laid with fiber-reinforced composite resin material layer in base steel core surfaces, hole location pre-buried positioning bolt in center uses Autoclave process solidification, obtains base steel composite fiber-reinforced resin material leaf springs of car.Fiber-reinforced composite resin material layer It is laid with direction and presses leaf spring length direction, glass fibre prepreg thickness in monolayer is 0.6mm, and carbon fiber prepreg thickness in monolayer is 0.23mm, the scheme that is laid with are 0₄/85₁/0₄/85₁/0₄/85₁/0₄/85₁/0₄(0 ° of direction uses glass fibre prepreg, 85 ° of directions Using carbon fiber prepreg, index number indicates to be laid with the number of plies).

Compared with prior art, the invention has the following beneficial effects:

The present invention changes its structure, Lay up design on the basis of existing automobile front suspension steel plate spring assembly Into proposing a kind of new composite material plate spring structure, the structure is by high duty metal steel plate and fiber-reinforced composite resin material The bed of material is combined by compression molding, and there is no the connectivity problems of composite material and metalwork, is guaranteeing leaf spring vertical stiffness On the basis of, while plate spring assembly lateral stiffness is improved, solve the existing connection cracking of existing composite material plate spring and transverse direction The problem of rigidity weakness, can satisfy the requirement of heavy duty truck, and security reliability is obviously improved.

Detailed description of the invention

Fig. 1 is main view plane complete section structural schematic diagram of the present invention.

Fig. 2 is half section structure diagram of the present invention.

In figure, the corresponding relationship of component names and accompanying drawing number are as follows:

1, high duty metal steel plate；101, grasswort；102, centre bore；2, fiber-reinforced composite resin material layer；201, glass Glass fiber prepreg material；202, carbon fiber prepreg；3, positioning bolt.

Specific embodiment

Embodiments of the present invention are described in further detail with reference to the accompanying drawings and examples.Following embodiment is used for Illustrate the present invention, but cannot be used to limit the scope of the invention.

In the description of the present invention, unless otherwise indicated, the meaning of " plurality " is two or more；Term " on ", The orientation or positional relationship of the instructions such as "lower", "left", "right", "inner", "outside", " front end ", " rear end ", " head ", " tail portion " is It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description of the present invention and simplification of the description, rather than instruction or dark Show that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore should not be understood as pair Limitation of the invention.In addition, term " first ", " second ", " third " etc. are used for description purposes only, and should not be understood as instruction or Imply relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " connected " " connects Connect " it shall be understood in a broad sense, for example, it may be being fixedly connected, it may be a detachable connection, or be integrally connected；It can be machine Tool connection, is also possible to be electrically connected；It can be directly connected, it can also be indirectly connected through an intermediary.For this field For those of ordinary skill, the concrete meaning of above-mentioned term in the present invention can be understood with concrete condition.