CN109404458A - Tension leaf spring assembly and suspension frame structure - Google Patents
Tension leaf spring assembly and suspension frame structure Download PDFInfo
- Publication number
- CN109404458A CN109404458A CN201711321830.4A CN201711321830A CN109404458A CN 109404458 A CN109404458 A CN 109404458A CN 201711321830 A CN201711321830 A CN 201711321830A CN 109404458 A CN109404458 A CN 109404458A
- Authority
- CN
- China
- Prior art keywords
- leaf spring
- section
- grasswort
- tension
- bolt
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000725 suspension Substances 0.000 title claims abstract description 24
- 241001101025 Lilaeopsis Species 0.000 claims abstract description 110
- 238000010276 construction Methods 0.000 claims abstract description 85
- 239000002131 composite material Substances 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims description 84
- 238000000034 method Methods 0.000 claims description 32
- 230000008569 process Effects 0.000 claims description 28
- 238000000748 compression moulding Methods 0.000 claims description 20
- 238000004519 manufacturing process Methods 0.000 claims description 15
- 239000011347 resin Substances 0.000 claims description 12
- 229920005989 resin Polymers 0.000 claims description 12
- 239000004744 fabric Substances 0.000 claims description 11
- 239000007767 bonding agent Substances 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 9
- 238000004513 sizing Methods 0.000 claims description 9
- 230000007704 transition Effects 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 7
- 238000009940 knitting Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 5
- 238000013461 design Methods 0.000 claims description 4
- 239000002184 metal Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 241000272470 Circus Species 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000011159 matrix material Substances 0.000 claims description 2
- 239000012779 reinforcing material Substances 0.000 claims description 2
- 238000009966 trimming Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 239000000446 fuel Substances 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 230000001419 dependent effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 8
- 238000009740 moulding (composite fabrication) Methods 0.000 description 7
- 238000009745 resin transfer moulding Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 4
- 238000003475 lamination Methods 0.000 description 3
- 229920002430 Fibre-reinforced plastic Polymers 0.000 description 2
- 239000011094 fiberboard Substances 0.000 description 2
- 239000011151 fibre-reinforced plastic Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012805 post-processing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- 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
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/373—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by having a particular shape
- F16F1/3737—Planar, e.g. in sheet form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29D—PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE
- B29D99/00—Subject matter not provided for in other groups of this subclass
-
- 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
- B60G11/10—Resilient suspensions characterised by arrangement, location or kind of springs having leaf springs only characterised by means specially adapted for attaching the spring to axle or sprung part of the vehicle
-
- 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
- F16F1/36—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers
- F16F1/3605—Springs made of rubber or other material having high internal friction, e.g. thermoplastic elastomers characterised by their material
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Springs (AREA)
Abstract
The present invention provides tension leaf spring assembly and suspension frame structure, including tension leaf spring, tension leaf spring each section is of same size；Tension leaf spring includes preceding grasswort construction section, preceding performance section, preceding changeover portion, U bolt construction section, rear changeover portion, rear performance section, great circle segmental arc, roundlet segmental arc, anti-arc section, straightway, rear grasswort construction section.The tension leaf spring of the technical program provides the spring rate of gradual change for Dependent Suspension, and different-stiffness corresponds to the different loads of suspension receiving, makes the variation of suspension vibration frequency less, improves the ride comfort and comfort of vehicle driving；The connection of the rear grasswort and after-poppet of tension leaf spring assembly does not use lifting lug, is directly connect with the after-poppet on vehicle body by bushing and rear pin shaft, simplifies the structure of suspension, provides the reliability of suspension；The tension leaf spring structure of the technical program uses FRP composite material, has positive failure mode, guarantees the safety of vehicle driving；Weight is about the 1/4 of leaf spring, improves fuel economy；5 times higher than leaf spring of service life or more, substantially reduce leaf spring use cost.
Description
Technical field
The invention belongs to motor-driven car spring technical fields, particularly relate to tension leaf spring assembly and suspension frame structure.
Background technique
Longitudinal leaf spring can transmit various power and torque, have guide function, therefore be used widely on automobile, but
The rear grasswort of the leaf spring of the prior art is connected by bushing, rear pin shaft, lifting lug, bracket bush with the after-poppet on vehicle body,
The connection structure of grasswort is complicated afterwards and is easy failure, while leaf spring quality is big, and fuel economy is poor, and the service life is short, ride comfort
Difference, unsprung mass is big, vibrates under spring big.
Commercial vehicle includes large, medium and small lorry and car, as the improvement of road, customer are to ride quality and comfortably
Property requirement it is higher and higher, the requirement to the protection of transport superior goods is also higher and higher, while customer is to chassis part
Reliability requirement is also higher and higher, to reduce vehicle use cost.
With development in science and technology, the molding composite material such as glass fibre and resin is gradually used for automotive suspension spring element.
FRP is that English Fibre-Reinforced Plastic writes a Chinese character in simplified form, and literal translation is fibre reinforced plastics.FRP composite material specific strength ratio
Modulus is high, there is good fatigue performance, damping vibration attenuation performance and corrosion resistance therefore to do leaf using FRP composite material
Flat spring can greatly improve the ride comfort and comfort of vehicle, and quality is only 1/4 or so of leaf spring, not only effectively
Fuel oil effect is improved, unsprung mass is also reduced, reduces and is vibrated under spring, while the service life is 3 times of leaf spring or so, whole
No replacement is required in vehicle life span elastic element, vehicle uses and maintenance cost is relatively low.
As described in disclosed CN104842734A, CN104842734A etc., the longitudinal FRP leaf spring suspension of the prior art is more
To be a piece of, i.e. only one rigidity is not able to satisfy different loads requirement, and two FRP leaf springs are superimposed, can be with
Meet the load requirements of empty, fully loaded two states, but not only structure is complicated, at high cost, but also stiffness variation is uneven, ride comfort
It is relatively poor.
The forming method of FRP leaf spring, including continuous fiber winding process, die press technology for forming, pultrude process, resin
The processes such as transfer modling manufacturing process (RTM), but the fiber cloth of existing die press technology for forming mostly manually stacks, and causes material
Expect that internal structure is uneven, the Parameters variations such as elasticity modulus are very big；Resin transfer moulding manufacturing process (RTM) is if resin injects
Insufficient pressure, the material internal structure that will also result in FRP composite material spring is uneven, and the Parameters variations such as elasticity modulus are very big.
Summary of the invention
The object of the present invention is to provide tension leaf spring assembly and suspension frame structures, in the Performance And Reliability for guaranteeing suspension
Under the premise of, existing leaf spring is replaced with tension leaf spring, the quality to solve existing Leaf Spring Suspension is big, ride comfort
Difference, the problems such as service life is short；It is needed with solving the problems, such as that existing only one rigidity of a piece of leaf spring is not able to satisfy load；Tension
The connection of the rear grasswort and after-poppet of leaf spring assembly does not use lifting lug, by bushing and rear pin shaft directly on vehicle body after
Bracket connection, simplifies the structure of suspension, provides the reliability of suspension；Every place cross section of tension leaf spring is four sides
There are chamfering in shape, quadrangle, and sectional area is bigger, and chamfer radius is bigger, and to prevent, the edge stress of tension leaf spring is big and takes off
Phenomena such as silk;Optimize tension leaf spring stress everywhere from plate end to middle part, improves reliability and the service life of tension leaf spring.
The present invention is achieved by the following technical solutions:
Each section width of a kind of tension leaf spring assembly, including tension leaf spring, the tension leaf spring is all the same；
It successively include preceding grasswort construction section, preceding performance section, preceding transition when the tension leaf spring extends to the back-end from front end
Section, U bolt construction section, rear changeover portion, rear performance section, great circle segmental arc, roundlet segmental arc, anti-arc section, straightway, rear grasswort peace
Fill section；The preceding grasswort construction section, the preceding performance section, the preceding changeover portion, the U bolt construction section, the rear transition
Section, the rear performance section, the great circle segmental arc, the roundlet segmental arc, the anti-arc section, the straightway, the rear grasswort
Construction section is sequentially connected as the tension leaf spring；
The preceding grasswort construction section is square, with a thickness of δ1；The preceding grasswort construction section and the preceding performance section junction
With a thickness of δ2；The preceding performance section is with the preceding changeover portion junction with a thickness of δ3；The U bolt construction section with a thickness of
δ4；Changeover portion is with the rear performance section junction with a thickness of δ after described5；Performance section and great circle segmental arc junction after described
With a thickness of δ6；The great circle segmental arc is with roundlet segmental arc junction with a thickness of δ7；The upper and lower surface of the anti-arc section is same
The heart, with a thickness of δ8；The straightway is square, with a thickness of δ9；Grasswort construction section with a thickness of δ after described10, δ1=δ2 +0.5
~1, δ2< δ3< δ4, δ4> δ5> δ6> δ7> δ8, δ8= δ9, δ10= δ9+ 0.5~1, the upper outer lower face surface of each section of junction is
Arc transition；
The tension leaf spring is in free state, on the middle part to the U bolt construction section of the preceding grasswort construction section
The distance of plane is h1, the distance of plane is h on the anti-arc section top to the U bolt construction section2, the rear grasswort
The distance of construction section middle part to plane on the U bolt construction section is h3, h2> h1> h3；
Every place cross section of the tension leaf spring is quadrangle, and there is fillet in quadrangle, and sectional area more great circle angular radius is bigger,
Radius of corner is in 3~7mm；
Two bolt through-holes are provided on the grasswort construction section and the rear grasswort construction section；
There are counterbore and lower counterbore on coaxial line in the U bolt construction section, the upper counterbore and the sinking hole depth are about
6mm；
The tension leaf spring is FRP composite material, and matrix is resin, and reinforcing material is the fiber cloth being superimposed, fine
The fiber tieed up in cloth is mainly glass fibre；
The tension leaf spring can be manufactured by processes such as compression moldings.
The thickness of the preceding performance section is from δ2To δ3For linear variable cross-section or parabola variable cross-section；The thickness of performance section after described
It spends from δ5To δ6For linear variable cross-section or parabola variable cross-section.
The die press technology for forming of the tension leaf spring includes that fiber is stacked with knitting process, preimpregnation process, fiber band
With cutting action, compression molding process, sizing and finished product manufacturing procedure；
It completes to stack the production for padding tool and compression molding die, the shape of pad tool side and the tension blade bullet before processing
Spring is identical in free state；The lower die bottom surface both side of the compression molding die has fillet, radius of corner and the tension blade
The radius of corner of spring cross section is equal；Upper mold bottom surface both side has wedge angle, there is fillet, radius of corner and the tension on the inside of wedge angle
The radius of corner of leaf spring cross section is equal；
In fiber band knitting process, with braider by fibrage at the wide fiber of tension leaf spring
Band, and fiber band is coiled on roller, form fiber belt reel；
In the preimpregnation process, the fiber belt reel is fitted into manipulator, the roller is fixed in shaft, is pulled fine
Band edge is tieed up, the fiber belt reel rolls in shaft, and fiber band is immersed in resin；
It stacks in the fiber band in cutting action, manipulator on one side spues preimpregnated fiber band, has on one side along pad
Circus, on one side by preimpregnated fiber band successively overlay pad tool on, and by setting length cutting, according to the tension
Design thickness everywhere in leaf spring successively stacks preimpregnated fiber band from the bottom up, when stacking, in plural piece longest fiber
After band overlays lower section, most staple fiber band is stacked, and successively stack more long fibre band until secondary long fibre band, again from secondary long fibre
Band successively stacks more staple fiber band until most staple fiber band, finally stacks plural piece longest fiber band above, above and below
Longest fiber band piece number it is equal；
In the compression molding process, after the completion of fiber band stacks, it is put into the lower die of the compression molding die, upper mold
Pressurization downwards on the inside of outer lateral edge lower die, and extra resin is squeezed out, from mold ejection after held for some time, form tension leaf
Flat spring blank；
In the sizing and finished product manufacturing procedure, first the tension leaf spring blank is placed on shape-setting clamp and is formed, so
Trimming pierces, cuts both ends redundance, processing bolts at two ends via hole and the upper counterbore and the lower counterbore afterwards, completes described
The manufacture of power leaf spring.
A kind of tension leaf spring assembly, the tension leaf spring including any of the above-described further include preceding grasswort, preceding lining
Set, cover board, rear grasswort body, bottom plate, back bush；
The front lining is pressed into the preceding grasswort, and the preceding grasswort is solid by bolt and bonding agent and the preceding grasswort construction section
Fixed connection；The grasswort body and the bottom plate are fixedly connected by bolt and bonding agent with the rear grasswort construction section；Two
A cover board is mounted in the above and below of the U bolt construction section by bonding agent.
There are front lining mounting hole and plate end fixing groove on the preceding grasswort, the upper plate and lower plate of plate end fixing groove are mutual
The alignment of parallel and surrounding, the centerline collineation of upper plate preceding grasswort bolt through-hole corresponding with lower plate, the front lining mounting hole
Cylindrical surface center line be located at plate end fixing groove middle face lower section.
There are stationary plane on plate end, back bush mounting hole, grasswort bolt through-hole, 2 screw threads after 2 after described on grasswort body
Hole, plate end limit plate；There are lateral flange, end flange, 4 lower bolt through-holes on the bottom plate；After installation, the rear grasswort body
On rear grasswort bolt through-hole, threaded hole center line and the bottom plate on lower bolt through-hole center line it is corresponding altogether
Line, lateral flange on the bottom plate and it is described after on plate end on grasswort body stationary plane close to and outboard alignment, under described
End flange in fixed plate and it is described after plate end limit plate on grasswort body close to and outboard alignment.
The cover board is by plate body and positioning pin and forms, and the plate body is groove profile metal plate, and there is circular hole at middle part；The positioning pin
It is made of big cylindrical body and small cylinder；The circular hole on small cylinder and the plate body on the positioning pin is interference fit；
After installation, big cylindrical body on the positioning pin respectively on the U bolt construction section upper counterbore and lower counterbore be interference
Cooperation.
Tension leaf spring assembly and suspension frame structure, it is characterised in that: the tension leaf spring including any of the above-described is total
At further including vehicle frame, fore-stock, preceding pin shaft, U bolt, rear axle, U bolt backing plate, rear pin shaft, after-poppet；The fore-stock
It is fixed on the vehicle frame with the after-poppet；The front end of the tension leaf spring assembly passes through the preceding pin shaft and nut
It is mounted on the fore-stock；The rear end of the tension leaf spring assembly by the rear pin shaft and nut be mounted on it is described after
On bracket；The U bolt construction section of the tension leaf spring assembly passes through the U bolt backing plate, the U bolt
It is fixed on the rear axle with nut;
Upper after the U bolt construction section stress to jump, the preceding performance section and the rear performance section gradually flatten, the rear transition
Longitudinal effective length of section to the rear grasswort construction section shortens, and back segment rigidity quickly increases, the entire tension leaf spring
Rigidity increase with it, form the nonlinear characteristic of the tension leaf spring rigidity.
The beneficial effects of the present invention are:
The tension leaf spring of the technical program provides the spring rate of gradual change for Dependent Suspension, and different-stiffness is corresponding outstanding
The different loads that frame is born make the variation of suspension vibration frequency less, improve the ride comfort and comfort of vehicle driving；Tension blade
The connection of the rear grasswort and after-poppet of main assemblage of spring does not use lifting lug, by bushing and rear pin shaft directly with the after-poppet on vehicle body
Connection, simplifies the structure of suspension, provides the reliability of suspension；The tension leaf spring structure of the technical program uses FRP
Composite material optimizes tension leaf spring stress everywhere from plate end to middle part, has positive failure mode, guarantee vehicle driving
Safety；Weight is about the 1/4 of leaf spring, improves fuel economy；5 times higher than leaf spring of service life or more, substantially reduce
Leaf spring use cost.
Detailed description of the invention
Fig. 1 is the schematic diagram of tension leaf spring
Fig. 2 is the main view of tension leaf spring
Fig. 3 is the A-A cross-sectional view of Fig. 2
Fig. 4 is the B-B sectional view of Fig. 2
Fig. 5 is the schematic diagram that tension leaf spring blank is pressed and molded process
Fig. 6 is the schematic diagram of tension leaf spring assembly
Fig. 7 is the main view of tension leaf spring assembly
Fig. 8 is the C-C cross-sectional view of Fig. 7
Fig. 9 is the enlarged view at I of Fig. 8
Figure 10 is the enlarged view at II of Fig. 8
Figure 11 is enlarged drawing at the III of Fig. 8
Figure 12 is the schematic diagram of preceding grasswort
Figure 13 is the schematic diagram of cover board
Figure 14 is the schematic diagram of rear grasswort body
Figure 15 is the schematic diagram of bottom plate
Figure 16 is tension blade plate spring assembly and suspension scheme of installation
Figure 17 is backing plate schematic diagram
Figure 18 is blade leaf spring performance plot
Wherein: 1- tension leaf spring；Grasswort construction section before 101-；Performance section before 102-；Changeover portion before 103-；104-
U bolt construction section；Changeover portion after 105-；Performance section after 106-；107- great circle segmental arc；108- roundlet segmental arc；109-
Anti- arc section；100- straightway；Grasswort construction section after 111-；The upper counterbore of 112-；113- lower counterbore；114- fillet；
115- tension leaf spring blank；116- upper mold；117- lower die；118- wedge angle；On the outside of 119- upper mold；120- lower die
Inside；Grasswort before 2-；21- front lining mounting hole；22- plate end fixing groove；Grasswort bolt through-hole before 23-；3- front lining；
4-cover boards；41- plate body；42- positioning pin；Grasswort body after 5-；51- back bush mounting hole；Grasswort bolt mistake after 52-
Hole；Stationary plane on 53- plate end；54- threaded hole；55- plate end limit plate；6- bottom plate；Stationary plane under 61- plate end；
62- lateral flange；The end 63- flange；Bolt through-hole under 64-；7- back bush；8- vehicle frame；9- fore-stock；Pin shaft before 10-；
11-U shape bolt；12- rear axle；121-leaf spring brackets；13-U u bolt plate u；The center 131- via hole；132- circular arc
Face；133- is upwarped；14- rear pin shaft；15- after-poppet.
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.
Specific embodiment
Below by shown in attached drawing, the invention will be further described in conjunction with the embodiments.
Embodiment:
Tension leaf spring assembly of the invention and suspension frame structure, including tension leaf spring 1, preceding grasswort 2, front lining 3, cover board
4, rear grasswort body 5, bottom plate 6, back bush 7, vehicle frame 8, fore-stock 9, preceding pin shaft 10, U bolt 11, rear axle 12, U bolt
Backing plate 13, rear pin shaft 14, after-poppet 15 etc., wherein by tension leaf spring 1, preceding grasswort 2, front lining 3, cover board 4, rear grasswort
Body 5, bottom plate 6, back bush 7 etc. are assembled into tension leaf spring assembly.
Tension leaf spring 1 is FRP composite material, including preceding grasswort construction section 101, preceding performance section 102, preceding changeover portion
103, U bolt construction section 104, rear changeover portion 105, rear performance section 106, great circle segmental arc 107, roundlet segmental arc 108, anti-arc section
109, straightway 110, rear grasswort construction section 111, upper counterbore 112, lower counterbore 113, fillet 114 etc., on preceding grasswort construction section 101
There are 2 bolt through-holes, rear grasswort construction section 111 there are 4 bolt through-holes, has counterbore on coaxial line in the middle part of U bolt construction section 104
112 and lower counterbore 113, upper counterbore 112 and lower counterbore 113 depth about 6mm, as shown in Figure 1, Figure 2, Figure 3, Figure 4.
Each section of tension leaf spring 1 is wide, and preceding grasswort construction section 101 is square, with a thickness of δ1；Grasswort construction section
101 with preceding 102 junction of performance section with a thickness of δ2；Preceding performance section 102 is with preceding 103 junction of changeover portion with a thickness of δ3；U-shaped
Bolt construction section 104 with a thickness of δ4；Changeover portion 105 is with rear 106 junction of performance section with a thickness of δ afterwards5；Afterwards performance section 106 with
107 junction of great circle segmental arc with a thickness of δ6；Great circle segmental arc 107 is with 108 junction of roundlet segmental arc with a thickness of δ7；Anti- arc section
109 upper and lower surface is concentric, with a thickness of δ8；Straightway 110 is square, with a thickness of δ9；Afterwards grasswort construction section 111 with a thickness of
δ10, δ1= δ2+ 0.5~1, δ2< δ3< δ4, δ4> δ5> δ6> δ7> δ8, δ8= δ9, δ10= δ9+ 0.5~1, each section of junction
Upper outer lower face surface is arc transition, as shown in Figure 1, Figure 2, Figure 3 shows.
Tension leaf spring 1 is in free state, preceding 101 middle part of grasswort construction section to plane on U bolt construction section 104
Distance be h1, the distance of plane is h on anti-arc section 109 top to U bolt construction section 1042, in rear grasswort construction section 111
The distance of plane is h in portion to U bolt construction section 1043, h2> h1> h3, as shown in Figure 1, Figure 2, Figure 3 shows.
Every place cross section of tension leaf spring 1 is quadrangle, and there is fillet 114 in quadrangle, and sectional area gets over great circle angular radius just
Bigger, 114 radius of fillet is such as schemed in 3~7mm with preventing the edge stress of tension leaf spring 1 from phenomena such as running occur greatly
Shown in 4.
Tension leaf spring 1 can be used the manufacture of the techniques such as compression molding and complete.
The die press technology for forming of tension leaf spring 1 includes that fiber is stacked and cut with knitting process, preimpregnation process, fiber band
Cut process, compression molding process, sizing and finished product manufacturing procedure.
It completes to stack the production for padding tool and compression molding die, the shape of pad tool side and the tension blade bullet before processing
Spring is identical in free state；117 bottom surface both side of lower die of compression molding die has fillet, radius of corner and tension leaf spring 1
Fillet 114 radius it is equal；116 bottom surface both side of upper mold has wedge angle 118, there is fillet, radius of corner and tension leaf on the inside of wedge angle
The radius of the fillet 114 of flat spring 1 is equal, and there is fillet 114 in the compression molding every place cross section of backward pull leaf spring 1 in this way.
Fiber band knitting process in, with braider by fibrage at the wide fiber band of tension leaf spring 1, and will
Fiber band is coiled on roller, and fiber belt reel is formed.
In preimpregnation process, fiber belt reel is fitted into manipulator, roller is fixed in shaft, fiber band edge is pulled,
Fiber belt reel rolls in shaft, and fiber band is immersed in resin.
It stacks in fiber band in cutting action, manipulator on one side spues preimpregnated fiber band, has on one side along pad
Circus, on one side by preimpregnated fiber band overlay pad tool on, and by setting length cutting, according to tension leaf spring
Design thickness everywhere in 1 successively stacks preimpregnated fiber band from the bottom up, when stacking, stacks in a plural number piece longest fiber band
Behind lower section, most staple fiber band is stacked, and it is layer-by-layer until secondary long fibre band, again from secondary long fibre band successively to stack more long fibre band
More staple fiber band is stacked until most staple fiber band, finally stacks plural piece longest fiber band above, above and below longest
Fiber band piece number is equal.
It in compression molding process, after the completion of fiber band stacks, is put into the lower die of compression molding die, on the outside of upper mold
119 are close to 120 on the inside of lower die, and along on the inside of lower die 120 extrusion formings downwards, and squeeze out extra resin, held for some time
Afterwards from mold ejection, tension leaf spring blank is formed, as shown in Figure 5.
In sizing and finished product manufacturing procedure, first tension leaf spring blank is placed on shape-setting clamp and is formed, is then gone
Side thorn cuts both ends redundance, processing bolts at two ends via hole and upper counterbore 112 and lower counterbore 113, completes tension leaf spring
1 manufacture.
Tension leaf spring 1 can also be manufactured with HP-FRP technique, braiding, fiber cloth lamination, laminate point including fiber cloth
The processes such as weldering, preforming, cutting, HP-RTM molding, sizing and post-processing, sizing and finished product processing, weave different fiber angles
Fiber cloth, be cut into different sizes and be stacked together to form fiber cloth lamination according to design requirement, the fiber cloth before stacking
Between uniformly be sprinkled with bonding agent, by fiber cloth lamination it is spot-welded together after be put into preforming tool carry out it is preforming, in formation
The fiberboard of approximate about 1 shape of tension leaf spring below, is respectively put into after fiberboard is cut into a plurality of fiber blanks
The modulus of complex number of HP-RTM molding die is intracavitary, lock HP-RTM molding die, after first vacuumizing, high pressure inject resin, sizing and
The manufacture of tension leaf spring 1 is completed after post-processing.
Preceding grasswort 2 is metalwork, above there is front lining mounting hole 21, plate end fixing groove 22, preceding grasswort bolt through-hole 23 etc., preceding
Bushing mounting holes 21 are for installing front lining 3；Plate end fixing groove 22 is used to fix the preceding grasswort construction section of tension leaf spring 1
101, the upper plate and lower plate of plate end fixing groove 22 are parallel to each other and surrounding alignment, the upper plate and lower plate of plate end fixing groove 22 respectively have two
A preceding grasswort bolt through-hole 23, the centerline collineation of upper plate preceding grasswort bolt through-hole 23 corresponding in lower plate；Front lining peace
The cylindrical surface center line in dress hole 21 is located at the lower section in the middle face of plate end fixing groove 22, in order to shorten 1 back segment of tension leaf spring
Longitudinal length, as shown in Fig. 6, Fig. 8, Fig. 9, Figure 12.
Cover board 4 is made of plate body 41 and positioning pin 42, and plate body 41 is groove profile metal plate, and there is circular hole at middle part；Positioning pin 42 is by big
Cylindrical body and small cylinder are constituted；Positioning pin 42 is pressed into the middle part circular hole of plate body 41, forms cover board 4；Positioning pin 42 it is small
The middle part circular hole of cylindrical body and plate body 41 is interference fit, as shown in Fig. 6, Fig. 8, Figure 10, Figure 13.
Have on grasswort body 5 afterwards back bush mounting hole 51, rear grasswort bolt through-hole 52, stationary plane 53 on plate end, threaded hole 54,
Plate end limit plate 55, back bush mounting hole 51 is cylinder, for installing back bush 7；Stationary plane 53 and the limit of plate end on plate end
Plate 55 is used for the installation and limit of rear grasswort construction section 111, as shown in Fig. 6, Fig. 8, Figure 11, Figure 14.
Bottom plate 6 is sheet metal component, above there is stationary plane 61 under plate end, lateral flange 62, end flange 63, lower bolt through-hole 64,
After stationary plane 61 is used to fix under plate end below grasswort construction section 111, lateral flange 62 is for grasswort construction section 111 after fixing
Side, end face of the end flange 63 for grasswort construction section 111 after fixing, as shown in Fig. 6, Fig. 8, Figure 11, Figure 15.
There are center via hole 131, arc surface 132 on U bolt backing plate 13, upwarp 133, center via hole 131 is used for U bolt
Backing plate 13 positions, and arc surface 132 is used to prevent the interference with U bolt 11, upwarps 133 and is used to prevent U bolt 11 from deviating from,
As shown in figure 17.
Before front lining 3 is pressed into the front lining mounting hole 21 of grasswort 2, by the preceding grasswort construction section of tension leaf spring 1
101 and the inside of plate end fixing groove 22 of preceding grasswort 2 coat bonding agent respectively, then the preceding grasswort of tension leaf spring 1 is installed
Before section 101 is inserted into the plate end fixing groove 22 of grasswort 2, tension leaf spring 1 and preceding grasswort 2 are bonded together, with 2 nuts
The preceding grasswort bolt through-hole 23 on bolt through-hole and preceding grasswort 2 before being each passed through on grasswort construction section 101, and it is solid with nut
It is fixed, as shown in Fig. 6, Fig. 8, Fig. 9, Figure 12.
After back bush 7 is pressed into the back bush mounting hole 51 of grasswort body 5, by the rear grasswort of 1 rear end of tension leaf spring
Construction section 111, rear grasswort body 5 plate end under the plate end of stationary plane 53 and bottom plate 6 stationary plane 61 coat bonding agent respectively,
The rear grasswort bolt through-hole 52 of rear grasswort body 5, the rear grasswort construction section of 1 rear end of tension leaf spring are each passed through with 2 bolts
Lower bolt through-hole 64 on 111 via hole and bottom plate 6 is fixed with 2 nuts；Again with 2 bolts, it is each passed through lower fixation
The 111 outside bolt through-hole of rear grasswort construction section of lower bolt through-hole 64, tension leaf spring 1 on plate 6, is screwed into rear grasswort body 5
Threaded hole 54 in, and tighten, as shown in Fig. 6, Fig. 8, Figure 11, Figure 14, Figure 15.
It is coated respectively in the upper and lower surface of the U bolt construction section 104 of tension leaf spring 1, two 4 inner surfaces of cover board viscous
Agent is connect, the positioning pin 41 on a cover board 4 is aligned to the upper counterbore 112 of the U bolt construction section 104 of tension leaf spring 1, and
Pushing is adhered to cover board 4 on U bolt construction section 104, equally, the positioning pin 41 on another cover board 4 is directed at tension leaf
The lower counterbore 113 of the U bolt construction section 104 of flat spring 1, and upper pressure is adhered to cover board 4 on U bolt construction section 104, it is complete
At the installation of tension leaf spring assembly, as shown in Fig. 6, Fig. 8, Figure 10, Figure 13.
By 131 sets of centre bore of U bolt backing plate 13 on the positioning pin 41 of cover board 4, with 2 U bolt 11 and 4 spiral shells
One tension leaf spring assembly is fixed on the leaf spring bracket 121 in 12 left side of vehicle bridge by mother, equally, by another tension blade
Main assemblage of spring is fixed on the right side of vehicle bridge 12, as shown in Figure 16, Figure 17.
Vehicle bridge 12 is lifted and moved, preceding pin shaft 10 is each passed through fore-stock 9, tension leaf spring assembly front end neck bush
3 inner hole, with nut by tension leaf spring assembly front end be fixed to fore-stock 9 on, rear pin shaft 14 be each passed through after-poppet 15,
Tension leaf spring assembly rear end is fixed to after-poppet with nut by the inner hole of back bush 7 in tension leaf spring assembly rear end
On 15, equally, another tension leaf spring assembly is fixed on to the right side of vehicle frame 8, completes whole peaces of tension leaf spring 1
Dress, as shown in Figure 16, Figure 17.
Working principle
Wheel and wheel hub are separately fixed in vehicle bridge 12, in vehicle travel process, ground vertical suffered by wheel,
It is passed on vehicle body 8 by vehicle bridge 12, tension leaf spring 1, fore-stock 9, after-poppet 15.
Rear lifting lug is not used, forming nonlinear characteristic for 1 rigidity of tension leaf spring, to provide condition, structure simpler,
And mitigate quality.
Since tension leaf spring assembly rear end is connect not over lifting lug with after-poppet 15, after 12 stress of vehicle bridge on
It jumps, the preceding performance section 102 and rear performance section 106 of tension leaf spring 1 gradually flatten, because there is no lifting lug, tension leaf spring 1
Rear end cannot move back, and longitudinal effective length of rear changeover portion 105 to rear grasswort construction section 111 shortens, and back segment rigidity quickly increases,
The rigidity of entire tension leaf spring 1 increases with it, and forms the nonlinear characteristic of tension leaf spring rigidity 1, as shown in figure 18,
Therefore, the characteristic of single blade spring unlike of tension leaf spring 1 is linear, can meet unloaded and fully loaded load, together
When guarantee unloaded and fully loaded ride comfort, improve vehicle riding comfort.
The above is only the descriptions of the preferred embodiment of the present invention, it is noted that due to the finiteness of literal expression, and objective
On there are unlimited specific structures, for those skilled in the art, before not departing from the principle of the invention
It puts, several improvements and modifications can also be made, these modifications and embellishments should also be considered as the scope of protection of the present invention.
Claims (8)
1. a kind of tension leaf spring assembly, it is characterised in that: including tension leaf spring, each portion of the tension leaf spring
Divide width all the same；
It successively include preceding grasswort construction section, preceding performance section, preceding transition when the tension leaf spring extends to the back-end from front end
Section, U bolt construction section, rear changeover portion, rear performance section, great circle segmental arc, roundlet segmental arc, anti-arc section, straightway, rear grasswort peace
Fill section；The preceding grasswort construction section, the preceding performance section, the preceding changeover portion, the U bolt construction section, the rear transition
Section, the rear performance section, the great circle segmental arc, the roundlet segmental arc, the anti-arc section, the straightway, the rear grasswort
Construction section is sequentially connected as the tension leaf spring；
The preceding grasswort construction section is square, with a thickness of δ1；The thickness of the preceding grasswort construction section and the preceding performance section junction
Degree is δ2；The preceding performance section is with the preceding changeover portion junction with a thickness of δ3；The U bolt construction section with a thickness of δ4；
Changeover portion is with the rear performance section junction with a thickness of δ after described5；Performance section and great circle segmental arc junction after described
With a thickness of δ6；The great circle segmental arc is with roundlet segmental arc junction with a thickness of δ7；The upper and lower surface of the anti-arc section is same
The heart, with a thickness of δ8；The straightway is square, with a thickness of δ9；Grasswort construction section with a thickness of δ after described10, δ1=δ2 +0.5
~1, δ2< δ3< δ4, δ4> δ5> δ6> δ7> δ8, δ8= δ9, δ10= δ9+ 0.5~1, the upper outer lower face surface of each section of junction is
Arc transition；
The tension leaf spring is in free state, on the middle part to the U bolt construction section of the preceding grasswort construction section
The distance of plane is h1, the distance of plane is h on the anti-arc section top to the U bolt construction section2, the rear grasswort
The distance of construction section middle part to plane on the U bolt construction section is h3, h2> h1> h3；
Every place cross section of the tension leaf spring is quadrangle, and there is fillet in quadrangle, and sectional area more great circle angular radius is bigger,
Radius of corner is in 3~7mm；
Two bolt through-holes are provided on the grasswort construction section and the rear grasswort construction section；
There are counterbore and lower counterbore on coaxial line in the U bolt construction section, the upper counterbore and the sinking hole depth are about
6mm；
The tension leaf spring is FRP composite material, and matrix is resin, and reinforcing material is the fiber cloth being superimposed, fine
The fiber tieed up in cloth is mainly glass fibre；
The tension leaf spring can be manufactured by processes such as compression moldings.
2. tension leaf spring according to claim 1, which is characterized in that the thickness of the preceding performance section is from δ2To δ3For
Linear variable cross-section or parabola variable cross-section；The thickness of performance section is from δ after described5To δ6For linear variable cross-section or parabola variable cross-section.
3. tension leaf spring according to claim 1, which is characterized in that the compression molding work of the tension leaf spring
Skill includes that fiber band knitting process, preimpregnation process, fiber band stack and add with cutting action, compression molding process, sizing and finished product
Work process；
It completes to stack the production for padding tool and compression molding die, the shape of pad tool side and the tension blade bullet before processing
Spring is identical in free state；The lower die bottom surface both side of the compression molding die has fillet, radius of corner and the tension blade
The radius of corner of spring cross section is equal；Upper mold bottom surface both side has wedge angle, there is fillet, radius of corner and the tension on the inside of wedge angle
The radius of corner of leaf spring cross section is equal；
In fiber band knitting process, with braider by fibrage at the wide fiber of tension leaf spring
Band, and fiber band is coiled on roller, form fiber belt reel；
In the preimpregnation process, the fiber belt reel is fitted into manipulator, the roller is fixed in shaft, is pulled fine
Band edge is tieed up, the fiber belt reel rolls in shaft, and fiber band is immersed in resin；
It stacks in the fiber band in cutting action, manipulator on one side spues preimpregnated fiber band, has on one side along pad
Circus, on one side by preimpregnated fiber band successively overlay pad tool on, and by setting length cutting, according to the tension
Design thickness everywhere in leaf spring successively stacks preimpregnated fiber band from the bottom up, when stacking, in plural piece longest fiber
After band overlays lower section, most staple fiber band is stacked, and successively stack more long fibre band until secondary long fibre band, again from secondary long fibre
Band successively stacks more staple fiber band until most staple fiber band, finally stacks plural piece longest fiber band above, above and below
Longest fiber band piece number it is equal；
In the compression molding process, after the completion of fiber band stacks, it is put into the lower die of the compression molding die, upper mold
Pressurization downwards on the inside of outer lateral edge lower die, and extra resin is squeezed out, from mold ejection after held for some time, form tension leaf
Flat spring blank；
In the sizing and finished product manufacturing procedure, first the tension leaf spring blank is placed on shape-setting clamp and is formed, so
Trimming pierces, cuts both ends redundance, processing bolts at two ends via hole and the upper counterbore and the lower counterbore afterwards, completes described
The manufacture of power leaf spring.
4. a kind of tension leaf spring assembly, it is characterised in that: the tension blade including any one of the claims 1 to 4
Spring further includes preceding grasswort, front lining, cover board, rear grasswort body, bottom plate, back bush；
The front lining is pressed into the preceding grasswort, and the preceding grasswort is solid by bolt and bonding agent and the preceding grasswort construction section
Fixed connection；The grasswort body and the bottom plate are fixedly connected by bolt and bonding agent with the rear grasswort construction section；Two
A cover board is mounted in the above and below of the U bolt construction section by bonding agent.
5. tension leaf spring assembly according to claim 4, it is characterised in that: have front lining installation on the preceding grasswort
Hole and plate end fixing groove, the upper plate and lower plate of plate end fixing groove are parallel to each other and surrounding alignment, upper plate are corresponding with lower plate
Preceding grasswort bolt through-hole centerline collineation, the cylindrical surface center line of the front lining mounting hole is located at plate end fixing groove
Middle face lower section.
6. tension leaf spring assembly according to claim 4, it is characterised in that: have on grasswort body after described solid on plate end
Determine face, back bush mounting hole, grasswort bolt through-hole, 2 threaded holes, plate end limit plate after 2；There is rollover on the bottom plate
Side, end flange, 4 lower bolt through-holes；After installation, the center line of rear grasswort bolt through-hole, threaded hole on the rear grasswort body
It is corresponding with the center line of lower bolt through-hole on the bottom plate conllinear, lateral flange and the rear volume on the bottom plate
On plate end on ear body stationary plane close to and outboard alignment, end flange on the bottom plate and it is described after plate on grasswort body
Hold limit plate close to simultaneously outboard alignment.
7. tension leaf spring assembly according to claim 4, it is characterised in that: the cover board by plate body and positioning pin and
Composition, the plate body are groove profile metal plate, and there is circular hole at middle part；The positioning pin is made of big cylindrical body and small cylinder；It is described fixed
The circular hole on small cylinder and the plate body on the pin of position is interference fit；Big cylindrical body point after installation, on the positioning pin
Not on the U bolt construction section upper counterbore and lower counterbore be interference fit.
8. tension leaf spring assembly and suspension frame structure, it is characterised in that: including any one of the claims 1 to 8
Power leaf spring assembly further includes vehicle frame, fore-stock, preceding pin shaft, U bolt, rear axle, U bolt backing plate, rear pin shaft, rear branch
Frame；The fore-stock and the after-poppet are fixed on the vehicle frame；The front end of the tension leaf spring assembly passes through institute
Pin shaft and nut are mounted on the fore-stock before stating；The rear end of the tension leaf spring assembly passes through the rear pin shaft and spiral shell
Mother is mounted on the after-poppet；The U bolt construction section of the tension leaf spring assembly passes through the U bolt pad
Plate, the U bolt and nut are fixed on the rear axle;
Upper after the U bolt construction section stress to jump, the preceding performance section and the rear performance section gradually flatten, the rear transition
Longitudinal effective length of section to the rear grasswort construction section shortens, and back segment rigidity quickly increases, the entire tension leaf spring
Rigidity increase with it, form the nonlinear characteristic of the tension leaf spring rigidity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321830.4A CN109404458B (en) | 2017-12-12 | 2017-12-12 | Tension blade spring assembly and suspension structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711321830.4A CN109404458B (en) | 2017-12-12 | 2017-12-12 | Tension blade spring assembly and suspension structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109404458A true CN109404458A (en) | 2019-03-01 |
| CN109404458B CN109404458B (en) | 2020-09-04 |
Family
ID=65463377
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711321830.4A Active CN109404458B (en) | 2017-12-12 | 2017-12-12 | Tension blade spring assembly and suspension structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109404458B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370731A (en) * | 2021-06-23 | 2021-09-10 | 东风柳州汽车有限公司 | Leaf spring suspension |
| CN113953760A (en) * | 2021-09-30 | 2022-01-21 | 东风汽车底盘系统有限公司 | Single leaf spring and manufacturing method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TR202015285A2 (en) * | 2020-09-25 | 2022-04-21 | Univ Sabanci | A multi-stage spring system suitable for use in vehicles. |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5938221A (en) * | 1997-12-08 | 1999-08-17 | The Boler Company | Tapered convolute leaf spring for truck suspensions |
| CN201346972Y (en) * | 2008-12-16 | 2009-11-18 | 上海科曼车辆部件系统有限公司 | Single plate spring applicable to combined air suspension system |
| CN104976261A (en) * | 2015-06-16 | 2015-10-14 | 吉林大学 | Composite material leaf spring assembly of automobile and assembling method thereof |
| CN106864191A (en) * | 2017-01-25 | 2017-06-20 | 安徽江淮汽车集团股份有限公司 | A kind of FRP plate spring and its assembly |
| CN107053703A (en) * | 2017-06-13 | 2017-08-18 | 北京汽车集团有限公司 | Manufacture the method and vehicle component and vehicle of vehicle component |
-
2017
- 2017-12-12 CN CN201711321830.4A patent/CN109404458B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5938221A (en) * | 1997-12-08 | 1999-08-17 | The Boler Company | Tapered convolute leaf spring for truck suspensions |
| CN201346972Y (en) * | 2008-12-16 | 2009-11-18 | 上海科曼车辆部件系统有限公司 | Single plate spring applicable to combined air suspension system |
| CN104976261A (en) * | 2015-06-16 | 2015-10-14 | 吉林大学 | Composite material leaf spring assembly of automobile and assembling method thereof |
| CN106864191A (en) * | 2017-01-25 | 2017-06-20 | 安徽江淮汽车集团股份有限公司 | A kind of FRP plate spring and its assembly |
| CN107053703A (en) * | 2017-06-13 | 2017-08-18 | 北京汽车集团有限公司 | Manufacture the method and vehicle component and vehicle of vehicle component |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113370731A (en) * | 2021-06-23 | 2021-09-10 | 东风柳州汽车有限公司 | Leaf spring suspension |
| CN113953760A (en) * | 2021-09-30 | 2022-01-21 | 东风汽车底盘系统有限公司 | Single leaf spring and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109404458B (en) | 2020-09-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102947111B (en) | Composite structural element, particularly for a vehicle suspension, and method for manufacturing the same | |
| EP2759423B1 (en) | Suspension arm made of fibre-reinforced plastic for a wheel suspension of a vehicle | |
| DE102014015701B4 (en) | Bicycle crank arm | |
| US20120211931A1 (en) | Composite leaf spring | |
| CN107553935B (en) | A kind of FRP composite material plate spring ontology manufacturing process | |
| CN105172216B (en) | One kind winding reinforced composite material leaf springs of car and preparation method thereof | |
| EP3224119B1 (en) | Method for reinforcing a component of a motor vehicle chassis | |
| DE102015209001B4 (en) | Wheel suspension unit for a motor vehicle | |
| DE102011003971A1 (en) | Fiber composite hybrid handlebar | |
| CN109404458A (en) | Tension leaf spring assembly and suspension frame structure | |
| EP3595918B1 (en) | Chassis component for a motor vehicle, and method for producing a chassis component | |
| CN109360919B (en) | A kind of all-composite material battery box for new energy vehicle and its making method | |
| DE202015103040U1 (en) | Wheel suspension unit for a motor vehicle | |
| DE10216244A1 (en) | Vehicle rear suspension | |
| KR20160133605A (en) | Reinforcement member for the auto part and the auto part comprising the same | |
| CN107269750B (en) | A kind of 3 D weaving damp composite material leaf spring and preparation method thereof | |
| KR20030082840A (en) | Side member of vehicle frame and production method thereof | |
| CN202719062U (en) | Novel fiber composite material plate spring with protective layers | |
| EP2948362A1 (en) | Support structure and method of producing a support structure | |
| EP2718203B1 (en) | Freight floor, freight container, method for producing a freight floor | |
| KR20130012871A (en) | Method for manufacturing cross member of commerical automobile | |
| CN205273637U (en) | Cabin cover before combined material passenger car | |
| CN107606014A (en) | A kind of leaf spring and its manufacturing process | |
| CN205273624U (en) | Cabin cover before continuous carbon -fibre composite car | |
| DE10253300A1 (en) | Fiber reinforced composite material for highly loaded structural elements incorporates at least in certain sections a layer of carbon fibers running parallel to the load paths |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20200812 Address after: 246000 3-9 square kilometers Industrial Park of Anqing Economic and Technological Development Zone, Anhui Province Applicant after: ANQING ANHUANG AUTO PARTS Co.,Ltd. Address before: 230022 Hefei City, Anhui Province, No. 27, Lucheng Lily apartment, No. 4-1502 Applicant before: Liu Shouyin |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |