CN208719192U - A kind of bullet train light weight Integral braking reel - Google Patents
A kind of bullet train light weight Integral braking reel Download PDFInfo
- Publication number
- CN208719192U CN208719192U CN201820729712.0U CN201820729712U CN208719192U CN 208719192 U CN208719192 U CN 208719192U CN 201820729712 U CN201820729712 U CN 201820729712U CN 208719192 U CN208719192 U CN 208719192U
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- Prior art keywords
- heat release
- release hole
- reel
- braking reel
- braking
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- Braking Arrangements (AREA)
Abstract
The utility model belongs to high-speed train braking technology, and in particular to a kind of bullet train light weight Integral braking reel.The inner periphery of braking reel (1) is equipped with inner circle heavy platform flange (11), is fixedly connected by inner circle heavy platform flange (11) with the hub being fixed on axletree；Two disks of braking reel (1) are smooth, which is provided with several axial heat release holes (21), partly or entirely axial direction heat release hole (21) is along two disks axially through braking reel；The outside circumference of braking reel (1) is equipped with several radial heat release holes (22), and partly or entirely radial direction heat release hole (22) is radially penetrated through to the inner periphery for braking reel；Wherein, partly or entirely radial heat release hole (22) is equipped with air slot (23), corresponding radial heat release hole (22) connection of the air slot (23).The cooling rate of product designed by the utility model is higher than existing product, while its service life is higher than existing steel brake disc.
Description
Technical field
The utility model belongs to high-speed train braking technology, and in particular to a kind of bullet train light weight integration system moving axis
Disk.
Background technique
The brake disc that bullet train uses at present mainly has axle-mounted brake disk (being mounted on an axle) and the brake disk mounted (installation of wheel
On wheel) two kinds, two kinds of brake discs mostly use cast steel or forged steel overall structure.Wherein, axle-mounted brake disk generally includes two panels disk
The radiating ribs of ring and multiple the insides axial direction between two panels disk ring constitute airflow channel using the gap between radiating ribs, with
Improve heat dissipation effect, reduces thermal stress.Taking turns brake disk mounted outside is rubbing surface, and inside is equipped with multiple radiating ribs, in radiating ribs
Between formed radial air channel, realize heat sinking function.
But traditional cast steel or Forging Steel Brake Disc weight is larger, and due to manufacturing process etc., this kind of brake disc
It is internal inevitably exist be mingled with, be segregated and the defects of hole；Meanwhile in braking process, huge braking thermic load
So that brake disc is generated very big temperature gradient, leads to the generation of thermal stress.The presence of defect and uneven temperature field and stress
Ringing be easy to make brake disc to generate micro-crack, when micro-crack extension to a certain extent when, brake disc will occur tired
Labor fracture.And with the continuous speedup of train, when speed reaches even higher than 350Km/h, the temperature rise for generation of braking sharply increases
Add, existing disc material is easy to produce rubbing surface crackle, has basically reached the limit of material.
Existing steel alloy brake disc is substituted using carbon ceramic composite brake disc, it is possible to reduce brake disc disk number mitigates
Train unsprung weight reduces traction power loss, and a system such as it is low with density, frictional behaviour is excellent, high temperature resistant
Column advantage.But the thermal diffusivity of carbon ceramic composite material wants poor compared with metal material, and the lower friction bring heat of high speed is more, therefore
Need to design the more excellent structure of thermal diffusivity in structure to greatly improve the heat dissipation effect of disk.But carbon ceramic composite material is crisp
Property big, poor processability, especially axle-mounted brake disk, the radiating ribs inside brake disc are difficult machining.In addition to this, needle
To carbon pottery axle-mounted brake disk, how to realize that it is in conjunction with train interface and in need of consideration.
Currently, most of carbon ceramic composite materials are formed using multi-disc or full wafer carbon pottery friction block with steel back cold riveting
(103511525 A of Chinese patent CN is a kind of for the carbon pottery brake pad of bullet train and its preparation), since carbon pottery is closed with steel
The thermal expansion coefficient otherness of gold is big, cause to rub repeatedly it is cooling after, since the difference of coefficient of expansion matching causes at riveting
Failure, or even loosening or obscission occur in the process of running, injure the stable operation of brake system.
105541364 A of Chinese patent CN discloses a kind of method of step densification production carbon pottery automobile brake disc, first
By the additives such as graphite powder, silicon powder and resin mixed dissolution, it is then coated in carbon fiber made of being woven as carbon fibre tow in advance
It on Wei Bu, is pressed and molded again after drying lamination, finally processing charing obtains the ceramic composite braking of fibre reinforced
Disk.Although the invention can reach the carbon ceramic composite material that step densification obtains higher density by the addition of graphite powder, silicon powder,
But it does not refer to the processing method of the heat release hole on carbon terrine and how to control precision, or heat release hole of the preparation with specific function
(simultaneously such as heat dissipation, high electric heating, conduction), and special-shaped heat release hole could be obtained.
Still there is radiating rate mistake although also devising axial heat release hole and radial venthole in existing braking reel
Slow problem.While in order to solve the problems, such as that radiating rate is excessively slow；The method of use be generally increase heat release hole quantity and/or
Area；But so, the intensity and service life of product will decline, at the same generate safety accident probability will it is significant on
It rises.
Utility model content
Technical problem to be solved in the utility model is to overcome above-mentioned the deficiencies in the prior art, provide radiating rate it is fast,
Service life meets the bullet train light weight Integral braking reel of existing demand.
The inner periphery of a kind of bullet train of the utility model light weight Integral braking reel, braking reel 1 is equipped with inner circle
Heavy platform flange 11 is fixedly connected by inner circle heavy platform flange 11 with the hub being fixed on axletree；
Two disks of the braking reel 1 are smooth, which is provided with several axial heat release holes 21, partly or entirely axial to dissipate
Hot hole 21 is along two disks axially through braking reel；
The outside circumference of the braking reel 1 is equipped with several radial heat release holes 22, partly or entirely radial direction heat release hole 22
It radially penetrates through to the inner periphery for braking reel；
Wherein, partly or entirely radial heat release hole 22 is equipped with air slot 23, the corresponding radial direction of the air slot 23
22 connection of heat release hole.
A kind of bullet train of the utility model light weight Integral braking reel, the axial direction heat release hole 21 is to brake reel
It is symmetrical centered on 1 center of circle.
A kind of bullet train of the utility model light weight Integral braking reel, it is described axial direction heat release hole 21 be round hole,
One of kidney slot or slotted eye；
The radial direction heat release hole 22 is one of round hole, kidney slot, slotted eye or square hole.
A kind of bullet train of the utility model light weight Integral braking reel, the radial direction heat release hole 22 is close to brake axle
The depth of section of disk inner periphery is more than the thickness of inner circle heavy platform flange 11, and the radial direction heat release hole 22 is located at braking reel inner periphery
Openings 221 be distributed in the upper side and lower side of inner circle heavy platform flange 11.
A kind of bullet train of the utility model light weight Integral braking reel, the radial direction heat release hole 22 is close to brake axle
Disk inner periphery is tilted to the upside of inner circle heavy platform flange 11 or downside, and the radial direction heat release hole 22 is located at braking reel inner periphery
Openings 221 are alternately distributed in the upside or downside of inner circle heavy platform flange 11.
A kind of bullet train of the utility model light weight Integral braking reel, the radial direction heat release hole 22 is close to brake axle
The depth of section of disk inner periphery is less than the thickness of inner circle heavy platform flange 11, and the radial direction heat release hole 22 is located at braking reel inner periphery
Openings 221 be through to the medial surface of inner circle heavy platform flange 11.
A kind of bullet train of the utility model light weight Integral braking reel, the air slot 23 are radial along braking reel
Direction projection, gained figure is arc, notched kidney-shaped, notched rectangular；The notch is 22 edge of radial heat release hole
Along braking reel radial direction projection gained.
A kind of bullet train of the utility model light weight Integral braking reel, when any one radial direction heat release hole 22 has
When air slot 23, with air slot the surface area on moving axis disk be its corresponding to radial direction heat release hole in moving axis disk top surface area
1/20-1/2.
A kind of bullet train of the utility model light weight Integral braking reel, when any one radial direction heat release hole 22 has
It is 2-12 in the number of the radial heat release hole air slot when air slot 23.
A kind of bullet train of the utility model light weight Integral braking reel, the axial heat release hole 21 in part and air slot 23
Connection.
A kind of bullet train of the utility model light weight Integral braking reel brakes of axial heat release hole 21 on reel
Number is 12-72, and the approximate aperture of single axial heat release hole is 2-8 millimeters of microns.
A kind of bullet train of the utility model light weight Integral braking reel brakes of radial heat release hole 22 on reel
Number is 9-63.
A kind of bullet train of the utility model light weight Integral braking reel, the approximate aperture and radial direction of axial heat release hole
The ratio between approximate aperture of heat release hole 22 is 0.05-0.5:1.
A kind of bullet train of the utility model light weight Integral braking reel, definition braking reel with a thickness of d, it is radial
Maximum distance of the heat release hole 22 in brake axle disc thickness direction is d1；Then d1/d=1/4-2/3.
A kind of bullet train of the utility model light weight Integral braking reel；It is described braking reel preparation method include
Following step:
Step 1
By the mold of single radial venthole 22 and the morphology and size selection plastic material of axial heat release hole 21, then at it
Graphite paper or pretreated graphite paper or carbon fiber paper of the surface package with special construction and function；By the diameter of setting
Spare mold is fixed to the number and distribution mode of venthole and axial heat release hole, then presses light weight one by raw material of carbon fiber
The size of bodyization braking reel is woven, and precast body is obtained；The precast body is made of spare mold and knitted body；The volume
The density for knitting body is 0.5g/cm3~0.7g/cm3；
Step 2
After the carbon fiber bundle and pre-buried plastic mould progress degumming process in precast body obtained by step 1, reserved
The precast body of radial heat release hole and axial heat release hole and radiate hole surface attachment graphite paper or carbon fiber paper, carries out C density processing
Until the density of braiding is 1.3g/cm3~1.6g/cm3；Green body after obtaining density；
Step 3
Green body is cleaned, is dried；Then it puts it into Si powder, in 1500~2000 DEG C of progress siliconisings, obtains close
Degree is 1.6g/cm3~2.4g/cm3Carbon ceramic Moving plate；
Step 4
It is machined out by design size；Obtain finished product.
When preparing bullet train light weight Integral braking reel；Graphite paper and/or carbon fiber paper are used after pretreatment
In carbon carbon composite of the preparation with inner hole and carbon ceramic composite material；
Wherein, the pretreating process of graphite paper includes at least one of following manner: heavy using physical deposition and/or chemistry
Product and/or chemically react generates the metal of one layer of fusing point higher than 2000 DEG C in the one side of graphite paper, using physical deposition and/or
Chemical deposition and/or chemical reaction generate the carbide that one layer of fusing point is higher than 2000 DEG C of person in the one side of graphite paper；
Wherein, the pretreatment of carbon fiber paper includes at least one of following manner: issued on carbon fiber paper 3D air slot,
One layer of pyrolytic carbon is generated using physical deposition and/or chemical deposition and/or chemical reaction, it is heavy using physical deposition and/or chemistry
Product and/or chemically react generated in the one side of carbon fiber paper the metal of one layer of fusing point higher than 2000 DEG C, using physical deposition and/
Or chemical deposition and/or chemical reaction generate the carbide that one layer of fusing point is higher than 2000 DEG C of person in the one side of carbon fiber paper.
When preparing bullet train light weight Integral braking reel；Radial venthole can be through-hole.
When preparing bullet train light weight Integral braking reel；Radial venthole 22 by braking reel outer internally
During extension, the hole shape of venthole is remained unchanged, but the approximate aperture of stomata gradually reduces.In the present invention, institute
It states approximate aperture and refers to and the area of stomata is converted into circle, then using the diameter of a circle as its approximate aperture.
When preparing bullet train light weight Integral braking reel；The plastic material be epoxy resin, polyamide 66,
One of ABS, PC, PP or polyether-ether-ketone.
When preparing bullet train light weight Integral braking reel；In precast body obtained by step 1, the mold of plastic material
It can extract out at any time.
When preparing bullet train light weight Integral braking reel；In step 2, precast body obtained by step 1 is placed in guarantor
The degumming for carrying out carbon fiber in 1500~2300 DEG C in gas atmosphere and pre-buried plastic mould removing processing are protected, C density is then carried out
Processing is until the density of braiding is 1.3g/cm3~1.6g/cm3；Green body after obtaining density.The protective atmosphere be selected from vacuum,
At least one of nitrogen, argon gas.
When preparing bullet train light weight Integral braking reel；In step 2, the C density processing includes CVI density.
C density is preferably CVI density in the present invention；When especially product schedule requirement is higher, CVI technique can only be used.In order to
When guaranteeing CVI density, do not occur the closed pore phenomenon of radial venthole and axial heat release hole reserved location, it is necessary to control to condition
System.The condition of the CVI density are as follows: precast body after degumming is put into gaseous phase deposition stove, is continually fed into carbon-source gas (natural gas
Or propylene) and diluent gas (nitrogen or hydrogen), the volume ratio of carbon-source gas and diluent gas is 0.5~2, and controls gas in furnace
Pressure is 500~5000Pa, 900~1100 DEG C progresss chemical vapor deposition 300~500 hours, obtain density as 1.3g/cm3
~1.6g/cm3Carbon carbon disk.The carbon-source gas is natural gas and/or propylene；The diluent gas is nitrogen and/or hydrogen.
When preparing bullet train light weight Integral braking reel；In step 3, in 1500~2000 DEG C of progress siliconisings, seep
The silicon time is 0.5~3 hour, and obtaining density is 1.6g/cm3~2.4g/cm3Carbon ceramic Moving plate.
When preparing bullet train light weight Integral braking reel；In step 5, the machining includes surface, Yi Jijing
Polishing to one and/or two outer end of venthole 22 and axial heat release hole 21, to obtain the ventilation device of stomata.
When preparing bullet train light weight Integral braking reel；The approximate aperture of radial venthole is axial stomata equivalent
2-20 times of aperture.
In this reality utility model, when any one radial heat release hole 22 has air slot 23, institute's band air slot is dynamic
Surface area on reel is 1/20-1/0 of its corresponding radial heat release hole in moving axis disk top surface area.
In this reality utility model, when any one radial heat release hole 22 has air slot 23, in radial heat release hole, this is led
The number of air drain is 4.And air slot is symmetric.
The axial heat release hole 21 in part and 23 connection of air slot.
The number for braking axial heat release hole 21 on reel is 12-72, and the approximate aperture of single axial heat release hole is 2-8
Millimeter.
The number for braking radial heat release hole 22 on reel is 9-63.
In this reality utility model, the approximate aperture of axial heat release hole and the ratio between the approximate aperture of radial heat release hole 22 are
0.05-0.5:1.
In this reality utility model definition braking reel with a thickness of d, radial heat release hole 22 is in brake axle disc thickness direction
Maximum distance is d1；Then d1/d=1/4-1/2.Wherein d is the restriction in national standard to steel disc thickness.
Preferably, the utility model separately designs to lead to axially through with the heat dissipation radially penetrated through on braking reel
The radial heat release hole of brake axle disc side and inner circle heavy platform face are especially got through in road, form communicating structure, and air can pass through
The run-though space is flowed, to be conducive to take away the heat generated when braking.And increase axially and radially heat release hole
Design area is whole, and energy is timely and more effectively frictional heat energy is distributed.
The utility model uses the pre-buried plastics at radial hole and axial hole for the first time, and one-time formed technique reduces and adds
Work.And the control of the available degree of precision of radial hole and axial hole of products obtained therefrom.
The utility model uses during forming carbon fiber needling preform, and the method for pre-buried plastic mould is formed
Preparation, can effectively solve the problems, such as that carbon ceramic Moving plate internal heat dissipating hole forming and difficulty of processing are big, and plastic mould is easy into
Shape, can according to requiring to obtain the different heat dissipation hole shape of size, and after being woven into preform can high temperature removal, or
It is prefabricated body absorbed inside.Meanwhile partial function element can be also set in plastics by the utility model；When plastics,
Partial function element can be enriched on carbon base body.
In addition, pre-buried die surface package have special construction and function graphite paper or pretreated graphite paper or
Carbon fiber paper can not only prevent the infiltration of liquid-state silicon in radial hole and axial hole, reduce melt silicon and block radial hole and axial direction
The surface accuracy of radial hole and axial hole is improved in hole, can also be formed with the clad of specific function in bore area, such as heat dissipation,
The functions such as thermally conductive, conductive.
For example, graphite paper uses physical deposition or chemical deposition or chemistry anti-on one side when preparing carbon ceramic composite material
It answers one layer of fusing point to be higher than 2000 DEG C of carbide, such as SiC, can make graphite paper closely in conjunction with carbon ceramic composite material.If
One layer of refractory metal, such as W, Re, Mo are deposited, inner hole can be made to be formed when having the functions such as excellent heat conducting or high temperature with C and caused
Close carbide lamella makes its more resistance to high temperature oxidation etc..
Also such as, when preparing carbon ceramic composite material, using 3D air slot carbon fiber paper, the thermally conductive effect of inner hole is further increased
Fruit, or using physical deposition or chemical deposition or one layer of pyrolytic carbon of chemical reaction, it is made to combine closely with composite material.Or
Carbon fiber paper surface deposits one layer of refractory metal, such as W, Re, Mo, can equally make inner hole with functions such as excellent heat conductings, or
Fine and close carbide lamella is formed with C when being high temperature, makes its more resistance to high temperature oxidation etc..
After siliconising, one end to heat release hole and/or both ends carry out simple mechanical process, can be obtained it is required at
Product.
Detailed description of the invention
Fig. 1 a is the braking reel stereoscopic schematic diagram in embodiment one.
Fig. 1 b is the braking reel side view in embodiment one.
Fig. 1 c is the braking reel main sectional view A-A in embodiment one.
Fig. 1 d is the braking reel main view in embodiment one.
Fig. 1 e is the brake axle disc side cross-sectional view B-B in embodiment one.
Fig. 1 f is the partial enlargement diagram C of the braking reel radial direction heat release hole in embodiment one.
Fig. 2 a is the braking reel stereoscopic schematic diagram in embodiment two.
Fig. 2 b is the braking reel side view in embodiment two.
Fig. 2 c is the braking reel main sectional view A-A in embodiment two.
Fig. 2 d is the braking reel main view in embodiment two.
Fig. 2 e is the brake axle disc side cross-sectional view B-B in embodiment two.
Fig. 2 f is the partial enlargement diagram C of the braking reel radial direction heat release hole in embodiment two.
Fig. 3 a is the braking reel stereoscopic schematic diagram in embodiment three.
Fig. 3 b is the braking reel side view in embodiment three.
Fig. 3 c is the braking reel main sectional view A-A in embodiment three.
Fig. 3 d is the braking reel main view in embodiment three.
Fig. 3 e is the brake axle disc side cross-sectional view B-B in embodiment three.
Fig. 3 f is the partial enlargement diagram C of the braking reel radial direction heat release hole in embodiment three.
Fig. 4 is braking reel and train interface main view in embodiment three.
Figure label: 1- braking reel, 11- inner circle heavy platform flange, 12- bolt hole, 21- axial direction heat release hole, 22- radially dissipate
Hot hole, 23- air slot, 221- openings.
Specific embodiment
Embodiment one
Referring to Fig. 1 a-1f, the braking reel 1 in diagram is a kind of preferred embodiment of the utility model, and braking reel 1 is circle
Annular disk body, density 1.6g/cm3~2.0g/cm3, two sides is smooth disk, and inner periphery processes inner circle heavy platform flange 11, inner circle
The bolt hole 12 being arranged on heavy platform flange 11, braking reel 1 is entirely through inner circle heavy platform flange 11 and the fixed dress of bolt assembly
It fits in the hub of axletree, in bullet train operational process, braking reel 1 rotates together with axletree, passes through train braking
The brake lining of system compresses rapidly fitting braking reel, and phase mutual friction converts kinetic energy into thermal energy, realizes the braking of train.
In the present embodiment, air slot 23 is additionally provided on radial heat release hole 22, the air slot 23 is along braking reel radial direction side
To projection, gained figure is arc；The notch is 22 edge of radial heat release hole along braking reel radial direction projection gained.
In the present embodiment, when any one radial heat release hole 22 has air slot 23, institute's band air slot is in moving axis disk
On surface area be 1/20-1/0 of its corresponding radial heat release hole in moving axis disk top surface area.
In the present embodiment, when any one radial heat release hole 22 has air slot 23, in the radial heat release hole air slot
Number be 4.And air slot is symmetric.
The axial heat release hole 21 in part and 23 connection of air slot.
The number for braking axial heat release hole 21 on reel is 64, and the approximate aperture of single axial heat release hole is 2.5 millis
Rice.
The number for braking radial heat release hole 22 on reel is 16.
A kind of bullet train of the utility model light weight Integral braking reel, the approximate aperture and radial direction of axial heat release hole
The ratio between approximate aperture of heat release hole 22 is 0.2:1.
A kind of bullet train of the utility model light weight Integral braking reel, definition braking reel with a thickness of d, it is radial
Maximum distance of the heat release hole 22 in brake axle disc thickness direction is d1；Then d1/d=1/4-1/2.
It is specific as shown in Figure 1a, it is distributed in order to which the heat that reel 1 generates during drag friction will be braked rapidly, this reality
Example is applied to be processed respectively on braking reel 1 there are two types of heat dissipation channel,
One of which is several oval axial heat release holes 21 in braking 1 disk of reel, and axial heat release hole 21 is along system
The axial setting of moving axis disk 1, and each axial heat release hole 21 penetrates through two disks of braking reel 1, so axial sky
Flow of air passes through axial heat release hole 21, takes away the heat inside braking reel 1.
Axial heat release hole 21 is symmetrically distributed in disk centered on the center of circle for braking reel 1, and axial heat release hole 21 is ellipse
Round hole.
Another kind is several radial circular louvres 22 being evenly arranged positioned at braking 1 outside circumference of reel, radial to dissipate
Hot hole is penetrated through along the radial of braking reel to braking reel inner periphery, and radial air in this way flows through radial heat release hole 22,
Take away the heat inside braking reel 1.
Interior circular shaft of the upper side and lower side of inner circle heavy platform flange 11 respectively with braking reel 1 forms step surface, the present embodiment
In radial heat release hole 22 close to braking reel inner periphery depth of section be gradually more than inner circle heavy platform flange 11 thickness, together
When radial direction heat release hole 22 opened up along the radial level of braking reel, heat release hole 22 radial in this way is in the end face of inner periphery greater than inner circle
Heavy platform flange 11 forms radial heat release hole 22 in the upper side and lower side of inner circle heavy platform flange 11 and is located at passing through for braking reel inner periphery
Port 221, as shown in Fig. 1 e and 1f, air can be flowed by the run-though space, thus generation when being conducive to take away braking
Heat.
Its it is specific the preparation method comprises the following steps:
By one layer of band air slot carbon of cladding on oval axial plastic material mold and cylindrical radial plastic material mold
Fine paper (air slot carbon fiber paper with a thickness of 20mm), obtains spare mold；By the radial venthole and axial heat release hole of setting
Number, shape and distribution mode fix plastic material mold, then press light weight Integral braking reel by raw material of carbon fiber
Size woven, obtain density be 0.5g/cm3Precast body；
Precast body is placed in the degumming and pre-buried plastic mould for carrying out carbon fiber in 1600 DEG C in vacuum protection gas atmosphere
Removing processing, then in gaseous phase deposition stove carry out CVI C density processing processing, be during which continually fed into carbon-source gas propylene and
The volume ratio of diluent gas nitrogen, carbon-source gas and diluent gas is 1, and controlling in furnace air pressure is 1000Pa, 1100 DEG C into
Row chemical vapor deposition 120 hours, obtaining density was 1.3g/cm3Carbon carbon disk；
Green body outer surface is cleaned, is dried；Green body after density is put into Si powder, is finally seeped at 1800 DEG C
Silicon, siliconising time are 1 hour, and obtaining density is 1.6g/cm3Carbon ceramic Moving plate；
By the surface in carbon ceramic Moving plate, and one and/or two of radial direction venthole (22) and axial direction heat release hole (21)
The polishing of a outer end obtains the ventilation device of stomata, and air slot is had in the inner hole of gained finished product.
After air slot is arranged on its radial and axial heat release hole, exothermic temperature can further decrease 10~20 DEG C, and dissipate
Thermal velocity is also above the prior art, while the service life of product is also advantageous over general existing steel brake disc.
Embodiment two
In conjunction with a-2f referring to fig. 2, the braking reel 1 in diagram is second of preferred embodiment of the utility model, brake axle
Disk 1 is circular ring shape disk body, density 1.8g/cm3~2.2g/cm3, two sides is smooth disk, and inner periphery processes inner circle heavy platform flange
11, the bolt hole 12 being arranged on inner circle heavy platform flange 11 brakes reel 1 entirely through inner circle heavy platform flange 11 and bolt assembly
It is securely fitted in the hub of axletree, in bullet train operational process, braking reel 1 rotates together with axletree, passes through column
The brake lining of vehicle braking system compresses rapidly fitting braking reel, and phase mutual friction converts kinetic energy into thermal energy, realizes the system of train
It is dynamic.
In the present embodiment, air slot 23 is additionally provided on radial heat release hole 22, the air slot 23 is along braking reel radial direction side
To projection, gained figure is arc；The notch is 22 edge of radial heat release hole along braking reel radial direction projection gained.
In the present embodiment, when any one radial heat release hole 22 has air slot 23, institute's band air slot is in moving axis disk
On surface area be its corresponding radial heat release hole the 1/5 of moving axis disk top surface area.
In the present embodiment, when any one radial heat release hole 22 has air slot 23, in the radial heat release hole air slot
Number be 4.And air slot is symmetric.
The axial heat release hole 21 in part and 23 connection of air slot.
The number for braking axial heat release hole 21 on reel is 72, and the approximate aperture of single axial heat release hole is 2 millimeters.
The number for braking radial heat release hole 22 on reel is 9.
A kind of bullet train of the utility model light weight Integral braking reel, the approximate aperture and radial direction of axial heat release hole
The ratio between approximate aperture of heat release hole 22 is 0.05:1.
A kind of bullet train of the utility model light weight Integral braking reel, definition braking reel with a thickness of d, it is radial
Maximum distance of the heat release hole 22 in brake axle disc thickness direction is d1；Then d1/d=1/4-1/2.
It is specific as shown in Figure 2 a, it is distributed in order to which the heat that reel 1 generates during drag friction will be braked rapidly, this reality
Example is applied to be processed respectively on braking reel 1 there are two types of heat dissipation channel,
One of which is several kidney-shaped axial direction heat release holes 21 in braking 1 disk of reel, and axial heat release hole 21 is along system
The axial setting of moving axis disk 1, and each axial heat release hole 21 penetrates through two disks of braking reel 1, so axial sky
Flow of air passes through axial heat release hole 21, takes away the heat inside braking reel 1.
Axial heat release hole 21 is symmetrically distributed in disk centered on the center of circle for braking reel 1, and axial heat release hole 21 is circle
Shape hole.
Another kind is several oval radial heat release holes 22 being evenly arranged positioned at braking 1 outside circumference of reel, radial to dissipate
Hot hole is penetrated through along the radial of braking reel to braking reel inner periphery, and radial air in this way flows through radial heat release hole 22,
Take away the heat inside braking reel 1.
The upper side and lower side of inner circle heavy platform flange 11 forms step surface with the interior circular shaft of braking reel 1 respectively, radial to radiate
Hole 22 is tilted close to braking reel inner periphery to the upside of inner circle heavy platform flange 11 or downside, and finally with inner circle heavy platform flange 11
The braking reel medial surface of upside or downside is formed through openings 221, while the section of radial heat release hole 22 is by braking reel
Excircle inner circumference is gradually reduced.All radial heat release holes in the present embodiment are handed in 11 the upper side and lower side of inner circle heavy platform flange
For perforation setting, as shown in figure 2 e and 2f, although air duct volume becomes smaller compared with embodiment one, reel disk body and reservation are braked
Thickness it is bigger, structural strength is improved than the scheme of embodiment, and air can be flowed by the run-though space, thus
Conducive to taking away the heat generated when braking.
Its it is specific the preparation method comprises the following steps:
One layer will be coated on plastic material mold and coats uniform and compact metal W powder carbon fiber paper, by the diameter of setting
Plastic material mold is fixed to number, shape and the distribution mode of venthole and axial heat release hole, is then original with carbon fiber
Material is woven by the size of light weight Integral braking reel, and obtaining density is 0.6g/cm3Precast body；
Precast body is placed in the degumming and pre-buried plastic mould for carrying out carbon fiber in 1600 DEG C in argon gas protection gas atmosphere
Removing processing, then in gaseous phase deposition stove carry out CVI C density processing processing, be during which continually fed into carbon-source gas propylene and
The volume ratio of diluent gas nitrogen, carbon-source gas and diluent gas is 1, and controlling air pressure in furnace is 800Pa, is carried out at 1100 DEG C
Chemical vapor deposition 160 hours, obtaining density was 1.5g/cm3Carbon carbon disk；
Then cleaning, drying are carried out to green body；It puts it into Si powder, in 2000 DEG C of progress siliconisings, the siliconising time is 2 small
When, obtaining density is 2.4g/cm3Carbon ceramic Moving plate；
By the surface in carbon ceramic Moving plate, and one and/or two of radial direction venthole (22) and axial direction heat release hole (21)
The polishing of a outer end obtains the ventilation device of stomata, and WC layers are had in the inner hole of gained finished product.
The radiating rate of products obtained therefrom is higher than the prior art, while the service life of product is also advantageous over general existing steel system
Moving plate.
Embodiment three
In conjunction with referring to Fig. 3 a-3f, the braking reel 1 in diagram is the third preferred embodiment of the utility model, brake axle
Disk 1 is circular ring shape disk body, density 2.2g/cm3~2.4g/cm3, two sides is smooth disk, and inner periphery processes inner circle heavy platform flange
11, the bolt hole 12 being arranged on inner circle heavy platform flange 11 brakes reel 1 entirely through inner circle heavy platform flange 11 and bolt assembly
It is securely fitted in the hub of axletree, in bullet train operational process, braking reel 1 rotates together with axletree, passes through column
The brake lining of vehicle braking system compresses rapidly fitting braking reel, and phase mutual friction converts kinetic energy into thermal energy, realizes the system of train
It is dynamic.
In the present embodiment, air slot 23 is additionally provided on radial heat release hole 22, the air slot 23 is along braking reel radial direction side
To projection, gained figure is arc；The notch is 22 edge of radial heat release hole along braking reel radial direction projection gained.
In the present embodiment, when any one radial heat release hole 22 has air slot 23, institute's band air slot is in moving axis disk
On surface area be its corresponding radial heat release hole the 1/10 of moving axis disk top surface area.
In the present embodiment, when any one radial heat release hole 22 has air slot 23, in the radial heat release hole air slot
Number be 4.And air slot is symmetric.
The axial heat release hole 21 in part and 23 connection of air slot.
The number for braking axial heat release hole 21 on reel is 72, and the approximate aperture of single axial heat release hole is 2 millimeters.
The number for braking radial heat release hole 22 on reel is 20.
A kind of bullet train of the utility model light weight Integral braking reel, the approximate aperture and radial direction of axial heat release hole
The ratio between approximate aperture of heat release hole 22 is 0.1:1.
A kind of bullet train of the utility model light weight Integral braking reel, definition braking reel with a thickness of d, it is radial
Maximum distance of the heat release hole 22 in brake axle disc thickness direction is d1；Then d1/d=1/4-1/2.
It is specific as shown in Figure 3a, it is distributed in order to which the heat that reel 1 generates during drag friction will be braked rapidly, this reality
Applying example, there are two types of heat dissipation channel, one of which is several axis in braking 1 disk of reel for processing respectively on braking reel 1
To heat release hole 21, axial heat release hole 21 is arranged along the axial of braking reel 1, and each axial heat release hole 21 penetrates through brake axle
Two disks of disk 1, so axial air flow through axial heat release hole 21, take away the heat inside braking reel 1.
Axial heat release hole 21 is symmetrically distributed in disk centered on the center of circle for braking reel 1, and axial heat release hole 21 is waist
Shape hole.
Another kind is several radial heat release holes 22 being evenly arranged positioned at braking 1 outside circumference of reel, radial heat release hole
To braking reel inner periphery, radial air in this way flows through radial heat release hole 22, takes away for radial perforation along braking reel
Brake the heat inside reel 1.
The upper side and lower side of inner circle heavy platform flange 11 forms step surface with the interior circular shaft of braking reel 1 respectively, radial to radiate
Hole 22 is along the radial level setting of braking reel, and heat release hole 22 radial in this way is as embodiment one close to braking reel 1
It is passed through when inner periphery with 11 phase of inner circle heavy platform flange, unlike, radial heat release hole 22 is high close to the section of braking reel inner periphery
Degree is less than the thickness of inner circle heavy platform flange 11, in this way, radial heat release hole 22 is extended radially through through inner circle heavy platform flange 11 simultaneously,
So that the openings 221 that radial heat release hole 22 is located at braking reel inner periphery extend to the medial surface of inner circle heavy platform flange 11.This
The communicating structure of the radial heat release hole 22 of embodiment runs through inner circle heavy platform flange from center, and two sides are in symmetrical structure, and air can be with
It is flowed by the run-though space, to be conducive to take away the heat generated when braking.Program two sides rubbing surface is thicker, disk body
Structural strength it is higher.
Since the radial heat release hole 22 of the present embodiment has extended through inner circle heavy platform flange 11, in inner circle heavy platform flange
Bolt hole 12 on 11 is in staggered distribution with radial heat release hole 22, ensure that the bonding strength of braking reel.
In above specific embodiment, round hole, kidney slot, slotted eye is can be used in the section of radial heat release hole 22
Or square hole, the quantity that axial heat release hole 21 and radial heat release hole 22 are arranged are set according to the size of braking reel, general axis
Line heat release hole 21 is no more than 200, and radial heat release hole 22 is no more than 100.
Its it is specific the preparation method comprises the following steps:
The graphite paper of thermal spraying SiC will be coated on one side on plastic material mold, obtain spare mold；By the radial direction of setting
Number, shape and the distribution mode of venthole and axial heat release hole fix plastic material mold, then using carbon fiber as raw material
It is woven by the size of light weight Integral braking reel, obtaining density is 0.7g/cm3Precast body；
Precast body is placed in the degumming and pre-buried plastic mould for carrying out carbon fiber in 1800 DEG C in nitrogen protection gas atmosphere
Removing processing, then in gaseous phase deposition stove carry out CVI C density processing processing, be during which continually fed into carbon-source gas propylene and
The volume ratio of diluent gas nitrogen, carbon-source gas and diluent gas is 1, and controlling in furnace air pressure is 2000Pa, 1100 DEG C into
Row chemical vapor deposition 200 hours, obtaining density was 1.6g/cm3Carbon carbon disk；
Green body is cleaned, is dried；Green body after density is put into Si powder, in 2000 DEG C of progress siliconisings, siliconising
Between be 3 hours, obtain density be 2.4g/cm3Carbon ceramic Moving plate；
By the surface in carbon ceramic Moving plate, and one and/or two of radial direction venthole (22) and axial direction heat release hole (21)
The polishing of a outer end obtains the ventilation device of stomata, and WC layers are had in the inner hole of gained finished product.
Comparative example 1
The design and implementation example 1 of heat release hole is identical, and difference is axial plastic material mold and cylindrical radial plastics material
One layer of graphite paper without air slot is coated on matter mold, by the radial venthole of setting and shape, the number of axial venthole
High temperature alloy is fixed with distribution mode, is then compiled using carbon fiber as raw material by the size of light weight Integral braking reel
It knits, obtains precast body, the preparation technology parameter of brake disc is same as Example 1.Although preparation heat release hole dimensional accuracy compared with
Height, heat dissipation performance is compared with Example 1, hence it is evident that poor.
Comparative example 2
The design of heat release hole and the preparation technology parameter of brake disc are same as Example 2, and difference is axial plastic material
Not coated graphite paper or carbon fiber paper on mold and cylindrical radial plastic material mold, by the radial venthole and axis of setting
High temperature alloy is fixed and (do not design air slot) to the shape, number and distribution mode of venthole, then using carbon fiber as raw material
It is woven by the size of light weight Integral braking reel, obtains precast body.Pre-buried plastic mould is in degumming process later
Directly volatilization abjection in the process, heat release hole is exposed, may cause CVI density, resin dipping density and subsequent high temperature siliconising
In the process, heat release hole internal residual and it may be enriched with silicon carbide in partial region, leads to the shape and size of heat release hole much
Deviate from design value at that time.The heat dissipation performance of products obtained therefrom is poor simultaneously.
The advantages of embodiment above describes the basic principles and main features of the utility model and the utility model, current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only illustrate the concrete operating principle of the utility model, on the premise of not departing from the spirit and scope of the utility model, this reality
It will also have various changes and improvements with novel, these various changes and improvements fall within the scope of the claimed invention, this
Utility model is claimed range and is defined by the appending claims and its equivalent thereof.
Claims (7)
1. a kind of bullet train light weight Integral braking reel, it is characterised in that: the inner periphery of braking reel (1) is equipped with inner circle
Heavy platform flange (11) is fixedly connected by inner circle heavy platform flange (11) with the hub being fixed on axletree；
Two disks of braking reel (1) are smooth, which is provided with several axial heat release holes (21), partly or entirely axial to dissipate
Hot hole (21) is along two disks axially through braking reel；
The outside circumference of braking reel (1) is equipped with several radial heat release holes (22), partly or entirely radial direction heat release hole
(22) it radially penetrates through to the inner periphery for braking reel；
Wherein, partly or entirely radial heat release hole (22) is equipped with air slot (23), the corresponding diameter of the air slot (23)
To heat release hole (22) connection；
The depth of section of the close braking reel inner periphery of radial direction heat release hole (22) is more than the thickness of inner circle heavy platform flange (11),
The openings (221) that the radial direction heat release hole (22) is located at braking reel inner periphery are distributed in the upside of inner circle heavy platform flange (11)
The downside and；
The radial direction heat release hole (22) tilts close to braking reel inner periphery to the upside of inner circle heavy platform flange (11) or downside.
2. a kind of bullet train according to claim 1 light weight Integral braking reel, it is characterised in that:
The axial direction heat release hole (21) is symmetrical centered on the center of circle for braking reel (1).
3. a kind of bullet train according to claim 1 light weight Integral braking reel, it is characterised in that:
The axial direction heat release hole (21) is one of round hole, kidney slot or slotted eye；
The radial direction heat release hole (22) is one of round hole, kidney slot, slotted eye or square hole.
4. a kind of bullet train according to claim 1 light weight Integral braking reel, it is characterised in that: the air guide
For slot (23) along braking reel radial direction projection, gained figure is arc, notched kidney-shaped, notched rectangular；It is described to lack
Mouth projects gained along braking reel radial direction for radial heat release hole (22) edge.
5. a kind of bullet train according to claim 1 light weight Integral braking reel, it is characterised in that: when any one
It is a radial direction heat release hole (22) have air slot (23) when, institute with air slot the surface area on moving axis disk be its corresponding to radially
1/20-1/2 of the heat release hole in moving axis disk top surface area.
6. a kind of bullet train according to claim 1 light weight Integral braking reel, it is characterised in that: when any one
It is 2-12 in the number of the radial heat release hole air slot when a radial direction heat release hole (22) has air slot (23).
7. a kind of bullet train according to claim 1 light weight Integral braking reel, it is characterised in that: part is axial
Heat release hole (21) and air slot (23) connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820729712.0U CN208719192U (en) | 2018-05-16 | 2018-05-16 | A kind of bullet train light weight Integral braking reel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820729712.0U CN208719192U (en) | 2018-05-16 | 2018-05-16 | A kind of bullet train light weight Integral braking reel |
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| Publication Number | Publication Date |
|---|---|
| CN208719192U true CN208719192U (en) | 2019-04-09 |
Family
ID=65970675
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|---|---|---|---|
| CN201820729712.0U Active CN208719192U (en) | 2018-05-16 | 2018-05-16 | A kind of bullet train light weight Integral braking reel |
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| Country | Link |
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| CN (1) | CN208719192U (en) |
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2018
- 2018-05-16 CN CN201820729712.0U patent/CN208719192U/en active Active
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