CN110435701A - A kind of rail traffic vehicles composite material connection sleeper beam and its forming method - Google Patents
A kind of rail traffic vehicles composite material connection sleeper beam and its forming method Download PDFInfo
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- CN110435701A CN110435701A CN201910754714.4A CN201910754714A CN110435701A CN 110435701 A CN110435701 A CN 110435701A CN 201910754714 A CN201910754714 A CN 201910754714A CN 110435701 A CN110435701 A CN 110435701A
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- sleeper beam
- structural unit
- composite material
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- traffic vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
- B29C70/34—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation
- B29C70/342—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core and shaping or impregnating by compression, i.e. combined with compressing after the lay-up operation using isostatic pressure
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/50—Other details
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Laminated Bodies (AREA)
Abstract
The present invention relates to a kind of rail traffic vehicles composite materials to contact sleeper beam and its forming method, belongs to rail traffic composite Materials Design and technology field.It is designed by hollow structure, while can be connection sleeper beam and used as a pressure vessel, resistance to compression bearing capacity with higher.It can bear the operating pressure of 6bar.The design combined using cell, can be improved whole rigidity, improves the bearing capacity and bearing capacity of sleeper beam.Each cell adopts punching connection, sleeper beam can be made to play the role of fine pressure vessel, the cavity volume of sleeper beam is up to 200L.The design uses composite material and hollow structure, and the weight of sleeper beam can be made to reduce by 30% or more compared to metal material, meet the light-weighted requirement of rail traffic vehicles.
Description
Technical field
The present invention relates to a kind of rail traffic vehicles composite materials to contact sleeper beam and its forming method, belongs to rail traffic
With composite Materials Design and technology field.
Background technique
Connection sleeper beam is located among bogie and compartment, and the function of sleeper beam is connection body and bogie, be primarily subjected to
Transmit the power of car body and bogie.Sleeper beam is connect by bolt with car body, is connected by air spring, traction device with framework,
Anti-side rolling torsion rod, anti-hunting damper holder etc. are all connect by corresponding support and bolt with sleeper beam and framework.Sleeper beam is needing simultaneously
To be used as a pressure vessel, compressed air of the storage for braking.Existing bogie connection sleeper beam is using metal material system
Standby, itself weight is more than 500kg, and since metal material is rigidly big, noise is also relatively large in operation.
Summary of the invention
Technology of the invention solves the problems, such as: overcome the deficiencies in the prior art, proposes a kind of rail traffic vehicles with compound
Material contacts sleeper beam and its forming method.Since connection sleeper beam relative size is larger, both need to bear the load of bogie and car body
Lotus, and need to bear internal pressure, therefore sleeper beam is contacted using composite material preparation, the carbon fiber high using intensity, mechanical property is good/
Epoxy resin composite material.Meet its mechanical property requirements by structure design, by the innovation of moulding process, solves gas chamber
Difficult forming, overcomes the problem of stress concentration of gas chamber inner wall edge, and structure of the invention design is combined with moulding process, realized
The composite material lightweight of composite material connection sleeper beam.
The technical solution of the invention is as follows:
A kind of rail traffic vehicles composite material contacts sleeper beam, which includes wainscot, lower wall panels and gas chamber,
Gas chamber includes the main structure and clad that several structural units rearrange, and clad is wrapped in outside main structure, and gas chamber is located at
Between wainscot and lower wall panels；
Structural unit is the prism (unit gas chamber) with top through-hole, bottom end through-hole and intermediate throughholes, prism (unit gas
Room) the internal diameter of top through-hole be less than intermediate throughholes, the internal diameter of the bottom end through-hole of prism (unit gas chamber) is less than intermediate throughholes, rib
The internal diameter of the top through-hole of column (unit gas chamber) is identical as the internal diameter of bottom end through-hole of prism；
It is bonded between adjacent structural unit by epoxy adhesive；
Through-hole is had on the shared side wall of adjacent structural unit, which is used for together with adjacent structural unit, through-hole
Shape be circle, the diameter of through-hole is
The cross section of structural unit outer profile be one of triangle, square, rectangle, pentagon, hexagon or
Two or more combinations；
The wainscot with a thickness of 3-20mm；
The lower wall panels with a thickness of 3-20mm；
Wall thickness of the structural unit with intermediate throughholes part is 2~15mm；
Clad with a thickness of 5-15mm；
The side length of structural unit outer profile is no more than 1000mm, and the height of preferably 200~300mm, structural unit regard product
Depending on it is required that；
The material for contacting sleeper beam is carbon fibre composite；The resin system of carbon fibre composite is halogen-free flameproof thermosetting
Property resin system, preferably Halogenless fire retarded epoxy resin system, carbon fiber use T300 grades, T700 grades, T800 grade carbon fiber, it is compound
Flame Retardancy is able to satisfy the requirement of EN45545-2 standard；
Clad uses unidirectional carbon fiber prepreg；
The step of a kind of rail traffic vehicles contact the forming method of sleeper beam with composite material, this method include:
(1) mold of preparation structure unit, the external surface of the mold of structural unit and the interior shape face of structural unit are consistent, system
The mold of standby connection sleeper beam, the interior shape face for contacting the mold of sleeper beam are consistent with the external surface for contacting sleeper beam；
(2) the mold forming structure unit of the structural unit prepared using step (1) selects halogen-free flameproof thermosetting when molding
Property resin prepreg material, preferably 610B Halogenless fire retarded epoxy resin prepreg, surface density 100-200g/m2, it is preferred to use Unidirectional
Fiber prepreg material, overlapping part relative misalignment between different prepreg overlays are solidified, solidification temperature 130- after the completion of molding
150 DEG C, curing time 1-2h, structural unit is obtained after the completion of solidification；Using structural unit mold forming structure unit when,
The first laying skin covering of the surface on the mold of structural unit, then repaves and puts carbon fiber Halogenless fire retarded epoxy resin unidirectional pre-immersion material；Table
Facial mask surface density is 200-400g/m2, resin can be 130-150 in temperature using intermediate temperature setting epoxy resin, resin system
Solidification is completed under the conditions of DEG C in 1-3h；
(3) the side wall punching for needing to connect with other structures unit in the structural unit that step (2) obtains；
(4) structural unit after step (3) punching is bonded using epoxy adhesive, obtains main structure；
(5) carbon fiber Halogenless fire retarded epoxy resin unidirectional pre-immersion material is used to be twined outside the main structure that step (4) obtains
Around molding, clad is formed, gas chamber is obtained；
(6) laying carbon fiber Halogenless fire retarded epoxy resin prepreg, shape on the mold of the connection sleeper beam of step (1) preparation
At lower wall panels layer, and carry out evacuation compacting (without solidification)；
(7) the laying intermediate temperature setting glue film on the uncured lower wall panels layer that step (6) obtains, in intermediate temperature setting glue film
The upper gas chamber placing step (5) and obtaining；Intermediate-temperature glue film surface density is 200-300g/m2, can be 130-150 DEG C in temperature
Under the conditions of solidification is completed in 1-3h；
(8) on the gas chamber of step (7) above laying intermediate temperature setting glue film, intermediate temperature setting glue film upper berth put carbon fiber without
Halogen fire retarding epoxide resin prepreg forms wainscot layer, obtains assembly；
(9) assembly is obtained to step (8) and carries out solidification of hot-press tank molding, obtain composite material connection sleeper beam, solidification pressure
Power is 0.5~0.8MPa, and 130-150 DEG C of solidification temperature, curing time is 1~3h.
The invention has the benefit that
(1) a kind of rail traffic vehicles provided by the invention contact the structure and its forming method of sleeper beam with composite material,
Using carbon fibre composite, have many advantages, such as that light weight, intensity height, endurance, noise are small.Sleeper beam can bear the pressure of 6bar
Power, while the water pressure test of 16bar can be born.
(2) internal structure of sleeper beam provided by the invention is used as gas chamber, and entire gas chamber is by multiple structural unit gas chambers
Composition, each unit air chamber wall can be used as support construction, support the load from bogie and compartment.The bottom of unit gas chamber
It is handled by the way of local strengthening, the influence that can come to avoid extending stress band.
(3) moulding process of the present invention uses, and first separately fabricated unit gas chamber, the mode being bonded afterwards reduce manufacture difficulty,
Manufacture efficiency is improved, while being conducive to play the carbon fibre composite performance feature related with direction.Each structural unit gas
In the forming process of room, the air-tightness of composite material is can be improved in first laying layer of surface film, avoids bringing due to microdefect gas leakage
Influence.
(4) after carbon fibre composite unit gas chamber is bonded one, Integral air chamber is carried out by the way of winding
Winding reinforcing can increase substantially the ability that gas chamber bears internal pressure, reduce the wall thickness of gas chamber, be conducive to whole loss of weight.
(5) the present invention provides a kind of rail traffic vehicles with composite material contact sleeper beam structure and its forming method,
Belong to composite structure field shaping technique.The rail traffic vehicles car body apron board structure, including composite material wainscot,
Composite material lower wall panels, composite material overall skeleton, anti-side rolling torsion rod seat and metal insert composition.Wainscot, lower wall panels
And it is connected between overall skeleton using cementation method.Overall skeleton between upper lower wall panels using be glued riveting combine by the way of connect
It connects.It is designed by hollow structure, while can be connection sleeper beam and used as a pressure vessel, resistance to compression with higher
Bearing capacity.It can bear the operating pressure of 6bar.Whole rigidity can be improved in the design combined using cell, improves pillow
The bearing capacity and bearing capacity of beam.Each cell adopts punching connection, and sleeper beam can be made to play the role of fine pressure vessel,
The cavity volume of sleeper beam is up to 200L.The design uses composite material and hollow structure, and the weight of sleeper beam can be made to compare
Metal material reduces by 30% or more, meets the light-weighted requirement of rail traffic vehicles.
Detailed description of the invention
Fig. 1 is the main view of main structure in embodiment 1；
Fig. 2 is the top view of main structure in embodiment 1；
Fig. 3 is the left view of main structure in embodiment 1；
Fig. 4 is the schematic diagram of structural unit in embodiment 1；
Fig. 5 is the A-A cross-sectional view of Fig. 4.
Specific embodiment
A kind of rail traffic vehicles contact the structure of sleeper beam with composite material, including entire sleeper beam uses halogen-free flameproof carbon fiber
Dimension composite material is prepared, and is divided into wainscot, lower wall panels, overall skeleton and is formed by connecting.Overall skeleton be divided into inner support skeleton,
Outer profile skeleton.Overall skeleton connect to form gas chamber with upper lower wall panels, and gas chamber is divided into multiple small gas chamber units by inner frame.
It is interconnected between small gas chamber unit by punching, can be used as pressure resistant vessel.
Entire gas chamber is divided into different contour gas chamber units by composition support frame, and gas chamber cross sectional shape can be three
Angular, square, rectangle, pentagon, hexagon etc..It can be designed according to actual needs.
The inside for contacting sleeper beam is first separately formed as the stingy chamber unit of pressure vessel, the height gas chamber unit such as does.Often
The side wall of a gas chamber unit is bonded mutually the support frame for forming sleeper beam.The side wall of each gas chamber unit and bottom attached portion position into
Row chamfer design or local reinforcement processing.After air chamber structure unit is carried out, etc. short transverses it is adhered to one another, form intermediate skeleton knot
Structure is wound reinforcement using canoe in intermediate backbone moiety, forms winding reinforcing layer, repave and put lower cover plate,
Last one curing molding.
The upper lower wall panels with a thickness of 5~20mm.Support frame includes profile siding, inner support siding, outer profile wall
Plate thickness is in 16~30mm, and local strengthening area thickness is in 20~30mm, the part of inner support skeleton, by etc. height composite material box
Son is bonded, and the wall thickness of box is 2~15mm, and the size of box can be adjusted according to product size, and the width of each box is not
More than 500mm, length only 1000mm.The length and width of each box preferably 200~300mm, height is depending on product requirement.
The cube being bonded mutually is connected to by punching, and the size in hole is less than or equal toIt is more than or equal toThe center of the preferred siding of position of opening.
Each square structure unit bottom avoids stress collection with using big chamfer design or composite material local reinforcement
In.
Composite material uses halogen-free flameproof aathermoset resin system, and fiber uses T300 grades, T700 grades, T800 grades of carbon fibers
Dimension, the fire-retardant performance of composite material can satisfy the requirement of EN45545-2 standard.
After composite material square box connects, winding layer with a thickness of 0.5~5mm, winding layer uses unidirectional carbon fiber
Prepreg.
A kind of rail traffic vehicles contact the forming method of sleeper beam with composite material, comprising the following steps:
(1) sleeper beam mold, structural unit box mold are prepared
(2) halogen-free flameproof thermosetting resin prepreg, preferably 610B Halogenless fire retarded epoxy resin prepreg, surface density are prepared
100~200g/m2。
(3) composite material box is prepared, it is preferred to use unidirectional carbon fiber prepreg, overlapping part between different prepreg overlays
Relative misalignment.
(4) after the completion of composite material box laying, solidify 2 hours under the conditions of 130 DEG C, the composite wood magazine after must solidifying
Son.
(5) it is punched according to design part in composite material cassette sidewall.
(6) different composite material box is bonded according to certain position using glue film, and it is prefabricated to form composite material casing play
Body.
(7) carbon fiber Halogenless fire retarded epoxy resin unidirectional pre-immersion material is used to be wound molding, shape in vitro in prefabricated skeleton
At winding reinforcing layer, winding prefabricated skeleton body is formed with prefabricated skeleton body.
(8) the laying prepreg on product mold forms lower wall panels layer, and carries out evacuation compacting.
(9) the laying intermediate temperature setting prepreg on uncured lower wall panels layer places winding prefabricated skeleton on glue film
Body.
(10) laying intermediate-temperature glue film on precast body again, then laying medium temperature halogen-free flameproof prepreg.Form wainscot.
(11) laggard solidification of hot-press tank molding is coated.
Then hollow structure is come square box bonding white silk at an internal container being connected to real by first preparing square box
It is existing.
The reinforcement for contacting the vertical joints position of sleeper beam hollow space is realized by integrated curing molding.
First layer needs placement surface film in square box forming process, then repaves prepreg.
Prepreg used in forming process is carbon fiber reinforcement non-bittern flame-proof epoxy prepreg.Solidification need to be solid using autoclave
Change, solidifying pressure is 0.5MPa or more.
A kind of rail traffic vehicles include that composite material is prepared with the structure that composite material contacts sleeper beam, are divided into upper wall
Plate, lower wall panels, overall skeleton are formed by connecting.Overall skeleton is divided into inner support skeleton, outer profile skeleton.Overall skeleton and upper lower wall
Plate connects to form gas chamber, and gas chamber is divided into multiple small gas chamber units by inner frame.It is mutual by punching between small gas chamber unit
It is connected, can be used as pressure resistant vessel.Bring loss of strength is punched to reduce, the shape in hole selects circle, the ruler in hole as far as possible
It is very little to be less than or equal to
The load that bogie and compartment application had both been born to solve sleeper beam, the requirement used again as pressure vessel, it is whole
A sleeper beam uses carbon fibre composite, and the resin system for the running environment for meeting rail vehicle transportation, composite material uses
Halogenless fire retarded epoxy resin system.It is made into hollow structure inside entire sleeper beam, as gas chamber.Its inner structural features are as follows: composition
Entire gas chamber is divided into different contour gas chamber units by support frame, gas chamber cross sectional shape can for triangle, square,
Rectangle, pentagon, hexagon etc..It can be designed according to actual needs, be the preferred rectangle of convenient formation or square.
In an alternative embodiment, the upper lower wall panels with a thickness of 5~20mm.The support frame includes contoured wall
Plate, inner support siding, outer profile wall panel thickness in 16~30mm, local strengthening area thickness in 20~30mm, inner support skeleton
Part, by etc. height composite material unit gas chamber (box) be bonded, the wall thickness of box is 3~15mm, and the size of box can
It is adjusted according to product size, the width of each box is no more than 500mm, length only 1000mm.The length and width of each box are preferred
200~300mm, height is depending on product requirement.
In an alternative embodiment, the bottom of the structural unit gas chamber is added using big chamfer design or using part
Mangnolia officinalis strong mode avoids stress from concentrating.
In an alternative embodiment, the composite material uses halogen-free flameproof aathermoset resin system, and fiber uses
T300 grades, T700 grades, T800 grade carbon fiber, the fire-retardant performance of composite material can satisfy the requirement of EN45545-2 standard.
In an alternative embodiment, after the composite material square box connects, winding layer with a thickness of 0.5~5mm,
Winding layer uses unidirectional carbon fiber prepreg.
In an alternative embodiment, a kind of rail traffic vehicles forming method of composite material connection sleeper beam is walked
Suddenly include:
(1) sleeper beam mold, structural unit box mold are prepared
(2) halogen-free flameproof thermosetting resin prepreg, preferably 610B Halogenless fire retarded epoxy resin prepreg, surface density are prepared
100~200g/m2。
(3) composite material box is prepared, it is preferred to use unidirectional carbon fiber prepreg, overlapping part between different prepreg overlays
Relative misalignment.
(4) after the completion of composite material box laying, solidify 2 hours under the conditions of 130 DEG C, the composite wood magazine after must solidifying
Son.
(5) it is punched according to design part in composite material cassette sidewall.
(6) different composite material box is bonded according to certain position using glue film, and it is prefabricated to form composite material casing play
Body.
(7) carbon fiber Halogenless fire retarded epoxy resin unidirectional pre-immersion material is used to be wound molding, shape in vitro in prefabricated skeleton
At winding reinforcing layer, winding prefabricated skeleton body is formed with prefabricated skeleton body.
(8) the laying prepreg on product mold forms lower wall panels layer, and carries out evacuation compacting.
(9) the laying intermediate temperature setting prepreg on uncured lower wall panels layer places winding prefabricated skeleton on glue film
Body.
(10) laying intermediate-temperature glue film on precast body again, then laying medium temperature halogen-free flameproof prepreg.Form wainscot.
(11) laggard solidification of hot-press tank molding is coated.
In an alternative embodiment, then the hollow structure of the connection sleeper beam of composite material will by first preparing square box
Square box bonding, which is practiced into an internal container being connected to, to be realized.
In an alternative embodiment, the reinforcement of the vertical joints position of the hollow part is real by integrated curing molding
Existing.
In an alternative embodiment, the forming process, first layer needs laying table in the forming process of unit gas chamber box
Then facial mask repaves prepreg.The advantageous air-tightness for improving gas chamber.
In an alternative embodiment, prepreg used in the forming process is the preimpregnation of carbon fiber reinforcement non-bittern flame-proof epoxy
Material.Solidification need to use solidification of hot-press tank, and solidifying pressure is 0.5MPa or more, can be from the guarantee product in processes such as form, solidify
Intensity and air-tightness.
Embodiment 1
A kind of rail traffic vehicles composite material contacts sleeper beam, which includes wainscot, lower wall panels and gas chamber,
Gas chamber includes the main structure and clad that 27 structural units rearrange, and main structure is three layers, as shown in Figure 1-3, clad
It is wrapped in outside main structure, gas chamber is between wainscot and lower wall panels；Structural unit be with top through-hole, bottom end through-hole and
The internal diameter of the prism (unit gas chamber) of intermediate throughholes, the top through-hole of prism (unit gas chamber) is less than intermediate throughholes, prism (unit
Gas chamber) bottom end through-hole internal diameter be less than intermediate throughholes, the internal diameter of the top through-hole of prism (unit gas chamber) and the bottom end of prism
The internal diameter of through-hole is identical, as illustrated in figures 4-5；
It is bonded between adjacent structural unit by epoxy adhesive；
Through-hole is had on the shared side wall of adjacent structural unit, which is used for together with adjacent structural unit, through-hole
Shape be circle, the diameter of through-hole is 30mm；
The cross section of structural unit outer profile is square
The wainscot with a thickness of 6mm；
The lower wall panels with a thickness of 6mm；
Wall thickness of the structural unit with intermediate throughholes part is 3mm；
Clad with a thickness of 5mm；
The side length of structural unit outer profile is 230mm, the height 150mm of structural unit
The material for contacting sleeper beam is carbon fibre composite；The resin system of carbon fibre composite is using halogen-free flameproof warm
Thermosetting resin system, preferably Halogenless fire retarded epoxy resin system, carbon fiber use T700 grade carbon fiber, the fire-retardant performance of composite material
Meet the requirement of EN45545-2 standard；
Clad uses unidirectional carbon fiber prepreg；
A kind of the step of forming method of rail traffic vehicles composite material connection sleeper beam includes:
(1) mold of preparation structure unit, the external surface of the mold of structural unit and the interior shape face of structural unit are consistent, system
The mold of standby connection sleeper beam, the interior shape face for contacting the mold of sleeper beam are consistent with the external surface for contacting sleeper beam；
(2) mold of the structural unit prepared using step (1) forms six structural units, and when molding selects halogen-free flameproof
Thermosetting resin prepreg, using 610B Halogenless fire retarded epoxy resin prepreg, surface density 200g/m2, it is preferred to use Unidirectional
Fiber prepreg material, overlapping part relative misalignment between different prepreg overlays are solidified, solidification temperature 130 after the completion of molding
DEG C, curing time 2h obtains structural unit after the completion of solidification；Using the mold forming structure unit of structural unit, first tying
Laying surface density is 300g/m on the mold of structure unit2Then Halogenless fire retarded epoxy resin film repaves and puts carbon fiber halogen-free flameproof
Epoxy resin unidirectional pre-immersion material.
(3) the side wall punching for needing to connect with other structures unit in the structural unit that step (2) obtains；
(4) structural unit after step (3) punching is bonded using epoxy adhesive, obtains main structure；
(5) carbon fiber Halogenless fire retarded epoxy resin unidirectional pre-immersion material is used to be twined outside the main structure that step (4) obtains
Around molding, clad is formed, gas chamber is obtained；
(6) laying carbon fiber Halogenless fire retarded epoxy resin prepreg, shape on the mold of the connection sleeper beam of step (1) preparation
At lower wall panels layer, and carry out evacuation compacting.
(7) solidify in 2 hours under the conditions of laying can be at 130 DEG C above the uncured lower wall panels layer that step (6) obtains
Glue film, glue film surface density be 300g/m2, the gas chamber that step (5) obtain is placed on intermediate temperature setting glue film；
(8) on the gas chamber of step (7) above laying intermediate temperature setting glue film, intermediate temperature setting glue film upper berth put carbon fiber without
Halogen fire retarding epoxide resin prepreg forms wainscot layer, obtains assembly；
(9) assembly is obtained to step (8) and carries out solidification of hot-press tank molding, obtain composite material connection sleeper beam, solidification temperature
130 DEG C, solidifying pressure 0.6MPa, curing time 2h of degree.
Obtained composite material connection sleeper beam carries out slow test test and bulge test test, and as a result surface sleeper beam can expire
The static(al) requirement of sufficient rail traffic has preferable air-tightness, can bear the operating pressure of 6bar.Using cell combination
Design, can be improved whole rigidity, improves the bearing capacity and bearing capacity of sleeper beam.The weight of sleeper beam is dropped compared to metal material
Low 35%.Meet the light-weighted requirement of rail traffic vehicles.
Embodiment 2
A kind of rail traffic vehicles composite material contacts sleeper beam, which includes wainscot, lower wall panels and gas chamber,
Gas chamber includes that the main structure that 30 structural units rearrange and clad, clad are wrapped in outside main structure, and gas chamber is located at
Between wainscot and lower wall panels；Structural unit is the prism (unit gas chamber) with top through-hole, bottom end through-hole and intermediate throughholes,
The internal diameter of the top through-hole of prism (unit gas chamber) is less than intermediate throughholes, and the internal diameter of the bottom end through-hole of prism (unit gas chamber) is less than
The internal diameter of intermediate throughholes, the top through-hole of prism (unit gas chamber) is identical as the internal diameter of bottom end through-hole of prism；
It is bonded between adjacent structural unit by epoxy adhesive；
Through-hole is had on the shared side wall of adjacent structural unit, which is used for together with adjacent structural unit, through-hole
Shape be circle, the diameter of through-hole is 25mm；
The cross section of structural unit outer profile is square
The wainscot with a thickness of 5mm；
The lower wall panels with a thickness of 5mm；
Wall thickness of the structural unit with intermediate throughholes part is 2.5mm；
Clad with a thickness of 6mm；
The side length of structural unit outer profile is 250mm, width 200mm, to avoid connector, appropriate adjustment side length, structure
The height 150mm of unit
The material for contacting sleeper beam is carbon fibre composite；The resin system of carbon fibre composite is using halogen-free flameproof warm
Thermosetting resin system, preferably Halogenless fire retarded epoxy resin system, carbon fiber use T700 grade carbon fiber, the fire-retardant performance of composite material
It can satisfy the requirement of EN45545-2 standard；
Clad uses unidirectional carbon fiber prepreg；
A kind of the step of forming method of rail traffic vehicles composite material connection sleeper beam includes:
(1) mold of preparation structure unit, the external surface of the mold of structural unit and the interior shape face of structural unit are consistent, system
The mold of standby connection sleeper beam, the interior shape face for contacting the mold of sleeper beam are consistent with the external surface for contacting sleeper beam；
(2) mold of the structural unit prepared using step (1) forms six structural units, and when molding selects halogen-free flameproof
Thermosetting resin prepreg, using 610B Halogenless fire retarded epoxy resin prepreg, surface density 165g/m2, it is preferred to use Unidirectional
Fiber prepreg material, overlapping part relative misalignment between different prepreg overlays are solidified, solidification temperature 130 after the completion of molding
DEG C, curing time 2h obtains structural unit after the completion of solidification；Using the mold forming structure unit of structural unit, first tying
Laying surface density is 280g/m on the mold of structure unit2Then Halogenless fire retarded epoxy resin film repaves and puts carbon fiber halogen-free flameproof
Epoxy resin unidirectional pre-immersion material.
(3) the side wall punching for needing to connect with other structures unit in the structural unit that step (2) obtains；
(4) structural unit after step (3) punching is bonded using epoxy adhesive, obtains main structure；
(5) carbon fiber Halogenless fire retarded epoxy resin unidirectional pre-immersion material is used to be twined outside the main structure that step (4) obtains
Around molding, clad is formed, gas chamber is obtained；
(6) laying carbon fiber Halogenless fire retarded epoxy resin prepreg, shape on the mold of the connection sleeper beam of step (1) preparation
At lower wall panels layer, and carry out evacuation compacting.
(7) solidify in 2 hours under the conditions of laying can be at 130 DEG C above the uncured lower wall panels layer that step (6) obtains
Glue film, glue film surface density be 280g/m2, the gas chamber that step (5) obtain is placed on intermediate temperature setting glue film；
(8) on the gas chamber of step (7) above laying intermediate temperature setting glue film, intermediate temperature setting glue film upper berth put carbon fiber without
Halogen fire retarding epoxide resin prepreg forms wainscot layer, obtains assembly；
(9) assembly is obtained to step (8) and carries out solidification of hot-press tank molding, obtain composite material connection sleeper beam, solidification temperature
150 DEG C, solidifying pressure 0.6MPa, curing time 1h of degree.
Obtained composite material connection sleeper beam carries out slow test test and bulge test test, and as a result surface sleeper beam can expire
The static(al) requirement of sufficient rail traffic has preferable air-tightness, can bear the water pressure test of 16bar.It is combined using cell
Design, whole rigidity can be improved, improve the bearing capacity and bearing capacity of sleeper beam.The weight of sleeper beam compares metal material
Reduce by 30%.Meet the light-weighted requirement of rail traffic vehicles.
Claims (10)
1. a kind of rail traffic vehicles contact sleeper beam with composite material, it is characterised in that: the connection sleeper beam includes wainscot, lower wall
Plate and gas chamber, gas chamber include the main structure and clad that several structural units rearrange, and clad is wrapped in outside main structure,
Gas chamber is between wainscot and lower wall panels；
Structural unit is the prism with top through-hole, bottom end through-hole and intermediate throughholes, and the internal diameter of the top through-hole of prism is less than
Intermediate throughholes, the internal diameter of the bottom end through-hole of prism are less than intermediate throughholes, and the internal diameter of the top through-hole of prism and the bottom end of prism are logical
The internal diameter in hole is identical, and the top through-hole of prism, bottom end through-hole, intermediate throughholes are coaxial；
Through-hole is had on the shared side wall of adjacent structural unit；
It is fixedly connected between adjacent structural unit.
2. a kind of rail traffic vehicles according to claim 1 contact sleeper beam with composite material, it is characterised in that: adjacent
Shape of through holes in structural unit share common sidewalls is circle, and diameter is
3. a kind of rail traffic vehicles according to claim 1 contact sleeper beam with composite material, it is characterised in that: adjacent
It is fixedly connected between structural unit by epoxy adhesive.
4. a kind of rail traffic vehicles according to claim 1 to 3 contact sleeper beam with composite material, it is characterised in that:
The cross section of structural unit outer profile is one or more of triangle, square, rectangle, pentagon, hexagon
Combination.
5. a kind of rail traffic vehicles according to claim 4 contact sleeper beam with composite material, it is characterised in that: on described
Siding with a thickness of 3-20mm；
The lower wall panels with a thickness of 3-20mm.
6. a kind of rail traffic vehicles contact sleeper beam with composite material according to claim 1 or 5, it is characterised in that: knot
Wall thickness of the structure unit with intermediate throughholes part is 2-15mm；
Clad with a thickness of 5-15mm；
The side length of structural unit outer profile is no more than 1000mm, and the height of preferably 200~300mm, structural unit regard specific product
Depending on it is required that.
7. a kind of rail traffic vehicles according to claim 1 contact sleeper beam with composite material, it is characterised in that: connection pillow
The material of beam is carbon fibre composite；The resin system of carbon fibre composite is halogen-free flameproof aathermoset resin system, carbon
Fiber uses T300 grades, T700 grades, T800 grade carbon fiber；
Clad uses unidirectional carbon fiber prepreg.
8. the forming method that a kind of rail traffic vehicles contact sleeper beam with composite material, it is characterised in that the step of this method wraps
It includes:
(1) mold of preparation structure unit, the external surface of the mold of structural unit and the interior shape face of structural unit are consistent；Preparation connection
It is the mold of sleeper beam, it is consistent with the external surface for contacting sleeper beam contacts shape face in the mold of sleeper beam；
(2) the mold forming structure unit of the structural unit prepared using step (1) is solidified after the completion of molding, has been solidified
Structural unit is obtained after；
(3) the side wall punching for needing to connect with other structures unit in the structural unit that step (2) obtains；
(4) structural unit after step (3) punching is bonded using epoxy adhesive, obtains main structure；
(5) carbon fiber Halogenless fire retarded epoxy resin unidirectional pre-immersion material is used to be wound packet outside the main structure that step (4) obtains
Coating obtains gas chamber；
(6) the laying carbon fiber Halogenless fire retarded epoxy resin prepreg on the mold of the connection sleeper beam of step (1) preparation, under formation
Siding layer, and carry out evacuation compacting；
(7) the laying intermediate temperature setting glue film on the lower wall panels layer that step (6) obtains, places step on intermediate temperature setting glue film
(5) gas chamber obtained；
(8) on the gas chamber of step (7) above laying intermediate temperature setting glue film, intermediate temperature setting glue film upper berth put carbon fiber Halogen resistance
Epoxy prepreg is fired, wainscot layer is formed, obtains assembly；
(9) assembly is obtained to step (8) and carries out solidification of hot-press tank molding, obtain composite material connection sleeper beam.
9. a kind of rail traffic vehicles according to claim 8 contact the forming method of sleeper beam, feature with composite material
Be: in the step (2), using structural unit mold forming structure unit when, first on the mold upper berth of structural unit
Skin covering of the surface is put, then repaves and puts carbon fiber Halogenless fire retarded epoxy resin unidirectional pre-immersion material；Skin covering of the surface surface density is 200-400g/
m2, resin can be completed solid using intermediate temperature setting epoxy resin, resin system under the conditions of temperature is 130-150 DEG C in 1-3h
Change.
10. a kind of rail traffic vehicles according to claim 8 contact the forming method of sleeper beam, feature with composite material
Be: in the step (9), solidifying pressure is 0.5~0.8MPa, and 130-150 DEG C of solidification temperature, curing time is 1~3h.
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| CN113085938A (en) * | 2021-06-07 | 2021-07-09 | 常州市宏发纵横新材料科技股份有限公司 | Integrated side beam main body structure in bogie and manufacturing method |
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| CN114750796A (en) * | 2022-03-31 | 2022-07-15 | 航天材料及工艺研究所 | Connection sleeper beam for rail transit and integral forming method thereof |
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| CN113997970B (en) * | 2021-09-26 | 2023-03-14 | 中车青岛四方机车车辆股份有限公司 | Pipe structure, bogie and rail vehicle |
| CN114194242A (en) * | 2022-01-04 | 2022-03-18 | 常州市新创智能科技有限公司 | Rail train bogie frame structure and forming method |
| CN114750796A (en) * | 2022-03-31 | 2022-07-15 | 航天材料及工艺研究所 | Connection sleeper beam for rail transit and integral forming method thereof |
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