CN107933590A - A kind of honeycomb sandwich structure skirtboard and preparation method thereof - Google Patents
A kind of honeycomb sandwich structure skirtboard and preparation method thereof Download PDFInfo
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- CN107933590A CN107933590A CN201711206726.0A CN201711206726A CN107933590A CN 107933590 A CN107933590 A CN 107933590A CN 201711206726 A CN201711206726 A CN 201711206726A CN 107933590 A CN107933590 A CN 107933590A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61D—BODY DETAILS OR KINDS OF RAILWAY VEHICLES
- B61D17/00—Construction details of vehicle bodies
- B61D17/04—Construction details of vehicle bodies with bodies of metal; with composite, e.g. metal and wood body structures
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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Abstract
The present invention relates to a kind of honeycomb sandwich structure skirtboard, the skirtboard is installed on vehicle side bar, skirtboard includes skeleton and skirtboard mainboard, skirtboard mainboard is platy structure, is equipped with U-shaped sliding slot at the top of skeleton, hinge is provided with U-shaped sliding slot, the hinge other end is fixed in the cooperation mounting base of car body side bar, by the slip adjustable mounting position of U-shaped sliding slot inner hinge, to installation site, hinge is fixed by fixing device and U-shaped sliding slot.The present invention also provides above-mentioned honeycomb sandwich structure skirtboard preparation method, mainly includes die sinking, covering forming, mainboard shaping, assembling.The present invention strengthens skirtboard mainboard using section aluminum frame, improves the rigidity of skirtboard；Covering is molded using flame-proof glass fibre phenolic aldehyde prepreg, skirtboard main body is then combined with aramid fiber honeycomb, light-weight, intensity is high；At the same time in the case of side bar punching deviation is less, pass through the slip of sliding slot inner hinge just adjustable mounting position.
Description
Technical field
The invention belongs to skirtboard field used for rail vehicle, more particularly to a kind of honeycomb sandwich structure skirtboard and its system
Preparation Method.
Background technology
Skirtboard used for rail vehicle is typically mounted at equipment compartment bottom, for protecting underbody equipment, improves aerodynamics, subtracts
Few noise of equipment radiation.Skirtboard does not require nothing more than high intensity, vibration and shock resistant, resistance to folding fatigue, also requires handsome in appearance and is easy to
Installation and maintenance.
Chinese patent CN105383142A discloses the technique that a kind of composite material makes high ferro equipment compartment apron board, the equipment
Cabin skirtboard is made of mainboard surrounding press strip, and mainboard belongs to aramid fiber honeycomb sandwich structure, and press strip preimpregnation material bag pressure forms.It is but main
Plate and press strip have mixed substantial amounts of carbon fibre prepreg, aramid fiber prepreg, and cost is higher, is unfavorable for mass application.
Chinese patent CN103661451A discloses a kind of skirt plate of railway vehicle, which is fixed on folding in sliding slot,
Then folding is connected on car body crossbeam by the mounting base with rotation axis, but for the convenience installed and slided, skirtboard
The back side is provided with substantial amounts of horizontal perforation sliding slot, and type face is complicated, and difficulty of processing is higher.And belong to section bar skirtboard, heavier-weight, no
Beneficial to high vehicle speeds.
Chinese patent CN201685821U discloses a kind of lower apron plate structure of lower-floor vehicle, and skirtboard passes through folding and car body phase
Even, there must be corresponding bolt hole on skirtboard, also to there is hinge hole to fix on car body.There is installation in car body side bar hinge hole to miss
In the case of difference, it is difficult to ensure that on skirtboard hinge installation, and intensity damages on car body side bar.
Chinese patent CN206344819U discloses a kind of skirt plate of railway vehicle structure, skirt design hinge function,
Support function and installation function are in the new mounting base of one.Although the invention avoids punching, the upper end of mounting base is also
It is to need T-bolt hole to be connected with side bar, the intensity of car body side bar still decreases.In addition, the moulding of mounting base is complicated,
It is not easily molded.
The installation of existing skirtboard is required to using hinge form connection side bar and skirtboard, skirtboard top and car body side bar mostly
Punching.When side bar punches installation hinge, if deviation occurs in mounting hole, hinge hole at the top of skirtboard is caused not coordinate, pole
It is possible to the situation that product rejection occurs.Meanwhile existing skirt plate of railway vehicle is mainly aluminium section bar, fiberglass and aluminum honeycomb panel
Material, there are weight is big, poor rigidity, installation and maintenance difficult, moulding dullness feature, if work out it is a kind of it is light-weight, keep it
Original rigidity even method for preparing skirtboard of strengthen rigidity, will be advantageous to the fast development of high-speed railway.
The content of the invention
The technical problems to be solved by the invention are to overcome the shortcomings of to mention in background above technology and defect, there is provided one
The honeycomb sandwich structure skirtboard that kind is installed on car body side bar, light weight, fire protecting performance are good while need not be punched at top.
Another object of the present invention is to provide a kind of preparation method of honeycomb sandwich structure skirtboard.
To achieve the above object, technical solution of the present invention is as follows：
A kind of honeycomb sandwich structure skirtboard, the skirtboard are installed on vehicle side bar, and the skirtboard includes skeleton and skirtboard master
Plate, the skirtboard mainboard are platy structure, and the skeleton is integrally bonded the rigidity fixed to strengthen skirtboard main body with skirtboard mainboard,
It is preferred that using bonding laminating type.
U-shaped sliding slot is equipped with the top of the skeleton, hinge is provided with U-shaped sliding slot, the hinge other end is fixed on car body side
In the cooperation mounting base of beam, by the slip adjustable mounting position of U-shaped sliding slot inner hinge, to installation site, hinge passes through
Fixing device is fixed with U-shaped sliding slot.
Honeycomb sandwich structure skirtboard of the present invention at top by setting sliding slot, and then the fixed hinge in sliding slot, can pass through
Hinge is connected with side bar, is avoided and is punched at the top of skirtboard, when there is small deviation in the hinge hole of side bar, can also be passed through
Sliding slot inner hinge slidable adjustment installation site.
Preferably, the skirtboard further includes Pneumatic power support lever, and one end of the Pneumatic power support lever is connected to skeleton both sides, separately
One end is fixed on car body in Pneumatic power support lever mounting base.When opening skirtboard, Pneumatic power support lever is set, skirtboard can propped up pneumatically
Under the support of strut, it is in appropriate angle with car body, prevents skirtboard from falling, be conveniently steered the maintenance of product in frame.
Preferably, the frame structure that the skeleton is tee T, I-shaped, U-shaped, L-type aluminium section bar is welded.
Preferably, the skirtboard mainboard includes three layers of inside panel, aramid fiber honeycomb and exterior skin.
Preferably, the fixing device is bolt.Hinge is connected by bolt with U-shaped sliding slot, is unclamped bolt and be can be achieved
Movement of the hinge in sliding slot, moves to the appropriate position, fastening bolt fixes hinge.
Present invention additionally comprises the preparation method of above-mentioned honeycomb sandwich structure skirtboard, following steps are specifically included：
S1 is molded：CNC processes the assembling mould of skeleton-mainboard, and skeleton is welded as after profile extrusion, and hinge is used and struck out
Type, opens up out U-shaped sliding slot at the top of skeleton, and at the top of skeleton and two side positions open up multiple mounting holes；
S2 covering formings：8~10 layers of flame-proof glass fibre-phenolic aldehyde prepreg is spread on flat plate mold, then spreads polytetrafluoro
Ethene release cloth, vacuumizes compacting；Remove vacuum bag, then spread 3~5 layers of fire-retardant glass again on polytetrafluoroethylene (PTFE) release cloth
Fibre-phenolic aldehyde prepreg, vacuumizes compacting；Flat plate mold is pushed into autoclave, closes tank door, with the heating rate liter of 2 DEG C/min
Then temperature is forced into 0.2 ± 0.05MPa, heat-insulation pressure keeping 4h, pressure release after being cooled to 60 DEG C with 1.5 DEG C/min at 130 ± 5 DEG C；
Demarcated with polytetrafluoroethylene (PTFE) release cloth, be inside panel above polytetrafluoroethylene (PTFE) release cloth, be outer below polytetrafluoroethylene (PTFE) release cloth
Covering；
S3 mainboards are molded：According to exterior skin-intermediate temperature setting epoxy jelly membrane-aramid fiber honeycomb-intermediate temperature setting on flat plate mold
Epoxy jelly membrane-inside panel form laying, vacuumizes compacting；Flat plate mold is pushed into autoclave, closes tank door, with 2 DEG C/min's
Heating rate is warming up at 130 ± 5 DEG C, is then forced into 0.3 ± 0.05MPa, heat-insulation pressure keeping 4h, is cooled to 1.5 DEG C/min
Pressure release after 60 DEG C, takes out the skirtboard mainboard of forming；
S4 is assembled：The polishing roughening of skeleton bonding plane, surface coating room temperature consolidated structures adhesive, by assembling the horizontal stroke on mould
Skeleton is pressed on mainboard correspondence position to gripping mechanism, is glued after cold curing 24h and is integrated；Then, skirtboard is carried out
Deburring is handled, and the later stage only needs the fixed hinge in U-shaped sliding slot using preceding, and pneumatic support is fixed on the mounting hole of skeleton both sides
Bar.
Preparation method of the present invention prepares flame-proof glass fibre-phenolic aldehyde prepreg shaping covering, then compound with aramid fiber honeycomb
Skirtboard main body is made, loss of weight more than 50% can be realized relative to fiberglass skirtboard under square one.
Preferably, the horizontal gripping mechanism main body is square steel, and compact heap is evenly arranged with vertically on the square steel.
Preferably, the flame-proof glass fibre-phenolic aldehyde prepreg requires grammes per square metre in 300~500g/m2, resin content >=40%.
Preferably, the aramid fiber cellular densities are 64~96kg/m3。
Preferably, the intermediate temperature setting epoxy jelly membrane grammes per square metre is 330 ± 30g/m2。
Preferably, tensile-sbear strength >=30MPa of the cold curing sqtructural adhesive.
Compared with prior art, the present invention has the beneficial effect that：
(1) fixed hinge in the sliding slot of honeycomb sandwich structure skirtboard top provided by the invention, is connected by hinge with side bar,
Avoid and punched at the top of skirtboard, when there is small deviation in the hinge hole of side bar, can also be slided by sliding slot inner hinge
Adjust installation site.
(2) present invention can employ whole section bar, greatly using section aluminum frame enhancing skirtboard mainboard in vertical direction
Enhance the rigidity of skirtboard；Meanwhile apron board structure of the present invention is simple, can be easily installed on car body side bar, at the same skirtboard plus
Work technique is simple, is easy to industrialized production.
(3) then the present invention is combined skirtboard master using flame-proof glass fibre-phenolic aldehyde prepreg shaping covering with aramid fiber honeycomb
Body, has the characteristics that light weight and excellent performance, meets harsh BS6853 fire-protection standards, relative to the glass under square one
Steel skirtboard can realize loss of weight more than 50%, meanwhile, the material of skirtboard is made in the present invention for carbon fiber, cost reduction
It is very much, can more it apply among idle reduction devices (such as bus, train, motor-car, subway).
Brief description of the drawings
Attached drawing 1 is the structure diagram of skirtboard of the present invention.
Attached drawing 2 is the assembling schematic diagram of skirtboard of the present invention.
Attached drawing 3 is 1 hinge partial enlarged view of attached drawing.
Attached drawing 4 is skeleton schematic diagram of the present invention.
Attached drawing 5 is skirtboard main body sectional view of the present invention.
Attached drawing 6 is assembly mold schematic diagram of the present invention.
Attached drawing 7 is horizontal gripping mechanism structure chart of the invention.
Attached drawing 8 is skirtboard production technological process of the present invention.
Wherein:1-Pneumatic power support lever, 2-hinge installation seat, 3-Pneumatic power support lever mounting base, 4-bolt, 5-hinge
Chain, 6-U-shaped sliding slot, 7-mainboard, 8-horizontal gripping mechanism, 9-mainboard inside panel, 10-mainboard exterior skin, 11-aramid fiber bee
Nest, 12-skirtboard mainboard, 13-skeleton, 15-square steel, 16-compact heap.
Embodiment
For the ease of understanding the present invention, the present invention is made below in conjunction with Figure of description and preferred embodiment more complete
Face, meticulously describe, but protection scope of the present invention is not limited to embodiment in detail below.
Unless otherwise defined, all technical terms used hereinafter and the normally understood implication of those skilled in the art
It is identical.Technical term used herein is intended merely to the purpose of description specific embodiment, it is no intended to limits the present invention's
Protection domain.
Unless otherwise specified, various raw material, reagent, the instrument and equipment etc. used in the present invention can pass through city
Field is commercially available or can be prepared by existing method.
Embodiment 1
Referring to attached drawing 1~7, the present embodiment provides a kind of honeycomb sandwich structure skirtboard, the skirtboard includes skeleton 13 and skirt
Plate mainboard 12, the skirtboard mainboard 12 are platy structure, and the skeleton 13 is fixed to strengthen skirt with overall be bonded of skirtboard mainboard 12
The rigidity of plate main body 12, skeleton 13 and the overall fitting of skirtboard mainboard 12 are fixed using Nian Jie connection mode.
Referring to Fig. 3, the top of skeleton 13 is equipped with U-shaped sliding slot 6, hinge 5 is provided with U-shaped sliding slot 6,5 other end of hinge is consolidated
It is scheduled in the cooperation hinge installation seat 2 of car body, by the slip adjustable mounting position of U-shaped 6 inner hinge 5 of sliding slot, to installation position
Postpone, hinge 5 is fixed by bolt 4 and U-shaped sliding slot 6.Fixing device uses bolt 4 in the present embodiment, and hinge 5 passes through bolt 4
It is connected with U-shaped sliding slot 6, unclamps bolt 4 and movement of the hinge 5 in sliding slot can be achieved, move to the appropriate position, fastening bolt 12
Fix hinge 5.
The frame structure that middle skeleton 13 of the present invention is preferably welded using tee T, I-shaped, U-shaped, L-type aluminium section bar.
13 structure of the present embodiment skeleton is preferably as shown in Figure 4.
Referring to Fig. 5, skirtboard mainboard 12 of the present invention is the section bar of platy structure, and the present embodiment, which preferably uses, includes Inner Mongol
The platy structure of 10 3 layers of skin 9, aramid fiber honeycomb 11 and exterior skin.
Fig. 2 is the present embodiment skirtboard assembling schematic diagram, and the present embodiment honeycomb sandwich structure skirtboard is provided in car body side bar
On, U-shaped sliding slot 6 is set at the top of skirtboard, hinge 5 is installed in U-shaped sliding slot 6,5 one end of hinge is fixed in U-shaped sliding slot 6, another
End is fixed in the hinge installation seat 2 of car body by bolt 4.Skirtboard is provided with Pneumatic power support lever 1, one end of Pneumatic power support lever 1
It is connected on 13 both sides T-beam of skeleton, the other end is fixed in the Pneumatic power support lever mounting base 3 on car body.During opening, skirtboard
It can be in 0~90 ° of angle with car body under the support of Pneumatic power support lever 1, and be not easy to fall, the maintenance of product in frame can be conveniently steered.
In order to obtain higher-quality vehicle honeycomb sandwich structure skirtboard, embodiment 2 to embodiment 4 provides above-mentioned knot
The preparation method of structure honeycomb sandwich structure skirtboard, relates generally to the preparation of skirtboard mainboard in the preparation method, obtained skirtboard
Mainboard 12 is the platy structure of 10 3 layers of inside panel 9, aramid fiber honeycomb 11 and exterior skin, then overall viscous with frame structure skeleton 13
Knot fitting, strengthens the rigidity of mainboard, meanwhile, relative to fiberglass skirtboard under square one, preparation method obtains in the present embodiment
Skirtboard can realize loss of weight more than 50%, be specifically shown in embodiment 2 to embodiment 4.
Embodiment 2
The present embodiment provides a kind of preparation method of honeycomb sandwich structure skirtboard, technological process such as Fig. 8 in a kind of embodiment 1
It is shown, it is specific as follows：
S1. mold：CNC processes the assembling mould of skeleton-mainboard, and assembling mould is as shown in fig. 6, be welded as bone after profile extrusion
Frame, hinge use punch forming, U-shaped sliding slot are opened up out at the top of skeleton, and at the top of skeleton and two side positions open up multiple installations
Hole；
S2. covering forming：8 layers of flame-proof glass fibre-phenolic aldehyde prepreg (grammes per square metre 350g/m is spread on flat plate mold2, resin contains
47%) amount, then spreads four cloth of fluorine, vacuumizes compacting；Remove vacuum bag, then spread 3 layers of fire-retardant glass again on four cloth of fluorine
Fibre-phenolic aldehyde prepreg (grammes per square metre 350g/m2, resin content 42%), vacuumize compacting；Flat plate mold is pushed into autoclave, is closed
Tank door, is forced into 0.21MPa, and 4h is kept the temperature at a temperature of 132 DEG C, pressure release after being cooled to 60 DEG C, takes out the interior exterior skin of forming,
What it is close to die face is exterior skin, and another piece is inside panel；
S3. mainboard is molded：According to exterior skin -310g/m on flat plate mold2Intermediate temperature setting epoxy jelly membrane -64kg/m3Aramid fiber
Honeycomb -310g/m2Intermediate temperature setting epoxy jelly membrane-inside panel form laying, vacuumizes compacting；Flat plate mold is pushed into autoclave,
Tank door is closed, is forced into 0.3MPa, 4h is kept the temperature at a temperature of 135 DEG C, pressure release after being cooled to 60 DEG C, the skirtboard master for taking out forming
Plate；
S4. assemble：The polishing roughening of skeleton bonding plane, surface coating tensile-sbear strength is 35MPa cold curing sqtructural adhesives,
Skeleton is pressed on mainboard by the horizontal gripping mechanism assembled on mould, horizontal gripping mechanism is as shown in fig. 7, comprises square steel
Is glued after 15 and the compact heap 16 that is uniformly arranged on square steel 15, cold curing 24h and is integrated, then to skirtboard progress deburring etc.
Post processing, later stage only need the fixed hinge in U-shaped sliding slot using preceding, Pneumatic power support lever are fixed on the mounting hole of skeleton both sides
.
The weight loss effect of the skirtboard, fire protecting performance and compression strength are tested, concrete outcome can be shown in Table 1.
Embodiment 3
The present embodiment provides a kind of preparation method of honeycomb sandwich structure skirtboard, technological process such as Fig. 8 in a kind of embodiment 1
It is shown, it is specific as follows：
S1. mold：CNC processes the assembling mould of skeleton-mainboard, and assembling mould is as shown in fig. 6, be welded as bone after profile extrusion
Frame, hinge use punch forming, U-shaped sliding slot are opened up out at the top of skeleton, and at the top of skeleton and two side positions open up multiple installations
Hole；
S2. covering forming：9 layers of flame-proof glass fibre-phenolic aldehyde prepreg is spread on flat plate mold, and (grammes per square metre 400g/m2, resin contain
47%) amount, then spreads four cloth of fluorine, vacuumizes compacting；Remove vacuum bag, then spread 4 layers of fire-retardant glass again on four cloth of fluorine
Fibre-phenolic aldehyde prepreg (grammes per square metre 400g/m2, resin content 45%), vacuumize compacting；Flat plate mold is pushed into autoclave, is closed
Tank door, is forced into 0.23MPa, and 4h is kept the temperature at a temperature of 130 DEG C, pressure release after being cooled to 60 DEG C, takes out the inside and outside illiteracy of forming
Skin, what it is close to die face is exterior skin, and another piece is inside panel.
S3. mainboard is molded：According to exterior skin -330g/m on flat plate mold2Intermediate temperature setting epoxy jelly membrane -80kg/m3Aramid fiber
Honeycomb -310g/m2Intermediate temperature setting epoxy jelly membrane-inside panel form laying, vacuumizes compacting；Flat plate mold is pushed into autoclave,
Tank door is closed, is forced into 0.34MPa, 4h is kept the temperature at a temperature of 133 DEG C, pressure release after being cooled to 60 DEG C, takes out the skirtboard of forming
Mainboard.
S4. assemble：The polishing roughening of skeleton bonding plane, surface coating tensile-sbear strength is 40MPa cold curing sqtructural adhesives,
Skeleton is pressed on mainboard by the horizontal gripping mechanism assembled on mould, horizontal gripping mechanism is as shown in fig. 7, cold curing
It is glued after 24h and is integrated, the post processing such as deburring is then carried out to skirtboard, the later stage only needs the fixed hinge in U-shaped sliding slot using preceding
Chain, Pneumatic power support lever is fixed on the mounting hole of skeleton both sides.
The weight loss effect of the skirtboard, fire protecting performance and compression strength are tested, concrete outcome can be shown in Table 1.
Embodiment 4
The present embodiment provides a kind of preparation method of honeycomb sandwich structure skirtboard, technological process such as Fig. 8 in a kind of embodiment 1
It is shown, it is specific as follows：
S1. mold：CNC processes the assembling mould of skeleton-mainboard, and assembling mould is as shown in fig. 6, be welded as bone after profile extrusion
Frame, hinge use punch forming, U-shaped sliding slot are opened up out at the top of skeleton, and at the top of skeleton and two side positions open up multiple installations
Hole；
S2. covering forming：10 layers of flame-proof glass fibre-phenolic aldehyde prepreg (grammes per square metre 450g/m is spread on flat plate mold2, resin
Content 47%), four cloth of fluorine is then spread, vacuumizes compacting；Remove vacuum bag, then spread again on four cloth of fluorine 5 layers it is fire-retardant
Glass-phenolic aldehyde prepreg (grammes per square metre 450g/m2, resin content 47%), vacuumize compacting；Flat plate mold is pushed into autoclave, is closed
Upper tank door, is forced into 0.25MPa, and 4h is kept the temperature at a temperature of 135 DEG C, pressure release after being cooled to 60 DEG C, takes out the inside and outside illiteracy of forming
Skin, what it is close to die face is exterior skin, and another piece is inside panel.
S3. mainboard is molded：According to exterior skin -350g/m on flat plate mold2Intermediate temperature setting epoxy jelly membrane -96kg/m3Aramid fiber
Honeycomb -350g/m2Intermediate temperature setting epoxy jelly membrane-inside panel form laying, vacuumizes compacting；Flat plate mold is pushed into autoclave,
Tank door is closed, is forced into 0.35MPa, 4h is kept the temperature at a temperature of 133 DEG C, pressure release after being cooled to 60 DEG C, takes out the skirtboard of forming
Mainboard.
S4. assemble：The polishing roughening of skeleton bonding plane, surface coating tensile-sbear strength is 45MPa cold curing sqtructural adhesives,
Skeleton is pressed on mainboard by the horizontal gripping mechanism assembled on mould, horizontal gripping mechanism is as shown in fig. 7, cold curing
It is glued after 24h and is integrated, the post processing such as deburring is then carried out to skirtboard, the later stage only needs the fixed hinge in U-shaped sliding slot using preceding
Chain, Pneumatic power support lever is fixed on the mounting hole of skeleton both sides.
The weight loss effect of the skirtboard, fire protecting performance and compression strength are tested, concrete outcome can be shown in Table 1.
1 skirtboard the performance test results of table
| Embodiment | Weight loss effect/% | Fire protecting performance | Compression strength/MPa |
| Embodiment 2 | 57% | Meet Ia grades of class | ＞ 3.5MPa |
| Embodiment 3 | 55% | Meet Ia grades of class | ＞ 3.5MPa |
| Embodiment 4 | 52% | Meet Ia grades of class | ＞ 3.5MPa |
Claims (10)
1. a kind of honeycomb sandwich structure skirtboard, it is characterised in that the skirtboard is installed on vehicle side bar, and the skirtboard includes skeleton
With skirtboard mainboard, the skirtboard mainboard is platy structure, and the skeleton is integrally bonded fixation with skirtboard mainboard；
U-shaped sliding slot is equipped with the top of the skeleton, hinge is provided with U-shaped sliding slot, the hinge other end is fixed on car body side bar
Coordinate in hinge installation seat, by the slip adjustable mounting position of U-shaped sliding slot inner hinge, to installation site, hinge passes through
Fixing device is fixed with U-shaped sliding slot.
2. honeycomb sandwich structure skirtboard according to claim 1, it is characterised in that the skirtboard further includes pneumatic support
Bar, one end of the Pneumatic power support lever are connected to skeleton both sides, and the other end is fixed on car body in Pneumatic power support lever mounting base.
3. honeycomb sandwich structure skirtboard according to claim 1, it is characterised in that the skeleton for tee T, it is I-shaped,
The frame structure that U-shaped, L-type aluminium section bar is welded.
4. honeycomb sandwich structure skirtboard according to claim 1, it is characterised in that the skirtboard mainboard include inside panel,
Three layers of aramid fiber honeycomb and exterior skin.
A kind of 5. preparation method of Claims 1-4 any one of them honeycomb sandwich structure skirtboard, it is characterised in that including
Following steps：
S1 is molded：CNC processes the assembling mould of skeleton-mainboard, and skeleton is welded as after profile extrusion, and hinge uses punch forming,
U-shaped sliding slot is opened up out at the top of skeleton, at the top of skeleton and two side positions open up multiple mounting holes；
S2 covering formings：8 ~ 10 layers of flame-proof glass fibre-phenolic aldehyde prepreg is spread on flat plate mold, polytetrafluoroethylene (PTFE) is then spread and takes off
Mould cloth, vacuumizes compacting；Remove vacuum bag, then spread 3 ~ 5 layers of flame-proof glass fibre-phenolic aldehyde again on polytetrafluoroethylene (PTFE) release cloth
Prepreg, vacuumizes compacting；Flat plate mold is pushed into autoclave, closes tank door, is warming up to the heating rate of 2 DEG C/min
130 ± 5 DEG C, then it is forced into 0.2 ± 0.05 MPa, heat-insulation pressure keeping 4h, pressure release after being cooled to 60 DEG C with 1.5 DEG C/min；With poly-
Tetrafluoroethene release cloth is demarcated, and is inside panel above polytetrafluoroethylene (PTFE) release cloth, is exterior skin below polytetrafluoroethylene (PTFE) release cloth；
S3 mainboards are molded：According to exterior skin-intermediate temperature setting epoxy jelly membrane-aramid fiber honeycomb-intermediate temperature setting epoxy on flat plate mold
Glued membrane-inside panel form laying, vacuumizes compacting；Flat plate mold is pushed into autoclave, closes tank door, with the heating of 2 DEG C/min
Speed is warming up at 130 ± 5 DEG C, is then forced into 0.3 ± 0.05 MPa, heat-insulation pressure keeping 4h, and 60 DEG C are cooled to 1.5 DEG C/min
Pressure release afterwards, takes out the skirtboard mainboard of forming；
S4 is assembled：The polishing roughening of skeleton bonding plane, surface coating room temperature consolidated structures adhesive, by assembling the horizontal card on mould
Tight device is pressed on skeleton on mainboard correspondence position, is glued after cold curing 24h and is integrated；Then, deburring is carried out to skirtboard
Processing, later stage only need the fixed hinge in U-shaped sliding slot using preceding, Pneumatic power support lever are fixed on the mounting hole of skeleton both sides i.e.
Can.
A kind of 6. preparation method of honeycomb sandwich structure skirtboard according to claim 5, it is characterised in that the transverse direction clamping
Apparatus main body is square steel, and compact heap is evenly arranged with vertically on the square steel.
A kind of 7. preparation method of honeycomb sandwich structure skirtboard according to claim 5, it is characterised in that the fire-retardant glass
Fibre-phenolic aldehyde prepreg requires grammes per square metre in 300 ~ 500g/m2, resin content >=40%.
A kind of 8. preparation method of honeycomb sandwich structure skirtboard according to claim 5, it is characterised in that the aramid fiber honeycomb
Density is 64 ~ 96kg/m3。
A kind of 9. preparation method of honeycomb sandwich structure skirtboard according to claim 5, it is characterised in that the intermediate temperature setting
Epoxy jelly membrane grammes per square metre is 330 ± 30g/m2。
10. a kind of preparation method of honeycomb sandwich structure skirtboard according to claim 5, it is characterised in that the room temperature is consolidated
Change tensile-sbear strength >=30MPa of sqtructural adhesive.
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| CN109016708A (en) * | 2018-08-02 | 2018-12-18 | 株洲时代新材料科技股份有限公司 | A kind of skirt plate of railway vehicle |
| CN109263156A (en) * | 2018-09-26 | 2019-01-25 | 航天材料及工艺研究所 | A kind of rail traffic vehicles car body apron board structure and its forming method |
| CN112644529A (en) * | 2021-01-04 | 2021-04-13 | 株洲时代新材料科技股份有限公司 | Method for improving fatigue resistance of lower skirt plate of cab and lower skirt plate of cab |
| CN113799814A (en) * | 2021-09-28 | 2021-12-17 | 常州市新创智能科技有限公司 | Rail transit car body apron board and connecting structure thereof |
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| CN109263156A (en) * | 2018-09-26 | 2019-01-25 | 航天材料及工艺研究所 | A kind of rail traffic vehicles car body apron board structure and its forming method |
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| CN113799814A (en) * | 2021-09-28 | 2021-12-17 | 常州市新创智能科技有限公司 | Rail transit car body apron board and connecting structure thereof |
| CN114475679A (en) * | 2022-03-14 | 2022-05-13 | 中车青岛四方机车车辆股份有限公司 | Train body side cover plate turnover mechanism and rail vehicle |
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| CN114572258A (en) * | 2022-03-24 | 2022-06-03 | 常州市新创智能科技有限公司 | Apron board of rail transit equipment cabin and forming process of apron board |
| CN114572258B (en) * | 2022-03-24 | 2022-10-04 | 常州市新创智能科技有限公司 | Apron board of rail transit equipment cabin and forming process thereof |
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Application publication date: 20180420 |