CN202867654U - Novel strong heat-dissipation brake disc used for high-speed train - Google Patents

Novel strong heat-dissipation brake disc used for high-speed train Download PDF

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Publication number
CN202867654U
CN202867654U CN 201220450881 CN201220450881U CN202867654U CN 202867654 U CN202867654 U CN 202867654U CN 201220450881 CN201220450881 CN 201220450881 CN 201220450881 U CN201220450881 U CN 201220450881U CN 202867654 U CN202867654 U CN 202867654U
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China
Prior art keywords
brake disc
radiating fin
radially
rubbing
ventilation slot
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CN 201220450881
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Chinese (zh)
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房明
喻亮
葛锦明
张显南
俞晓祥
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ZHEJIANG TIANLE NEW MATERIAL TECHNOLOGY Co Ltd
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ZHEJIANG TIANLE NEW MATERIAL TECHNOLOGY Co Ltd
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Abstract

The utility model provides a novel strong heat-dissipation brake disc used for a high-speed train, and belongs to the field of high-speed train brake devices. An existing brake disc has the defect that the surface temperature is high in use. The novel strong heat-dissipation brake disc comprises a brake disc body, wherein the front of the brake disc body is a friction face, the reverse face of the brake disc body is provided with heat dissipation ribs, a plurality of symmetric powder discharging grooves are axially arranged in the friction face, first radial heat dissipation ribs and second radial heat dissipation ribs are alternately arranged on the reverse face of the brake disc body, permeable venting grooves penetrating through the radial heat dissipation ribs and the powder discharging grooves are arranged in the first radial heat dissipation grooves and the second radial heat dissipation grooves, wind catchers formed by arc-shaped grooved are arranged in two end faces of each radial heat dissipation rib, the wind catchers are connected with the venting grooves, and one or more heat dissipation holes can be arranged in the center of the friction face of the brake disc and are distributed according to temperature gradient or uniformly distributed. The brake disc is good in heat dissipation performance, thermo-fatigue resistant, crazing resistant and strong in anti-deformation performance.

Description

The strong cooling brake disc of a kind of Novel high-speed train
Technical field
The utility model belongs to high-speed train braking device field, and is especially relevant in the strong cooling brake disc of a kind of Novel high-speed train
Background technique
There is two large problems in the iron-based that brake disc relates to adopt before one of critical component of train safe: 1, unsprung weight is large, affects the dynamic performance of rolling stock; When 2, using, its surface temperature is higher, affect the mechanical property of brake disc, along with communications and transportation develops to high-speed secure, brake disc is on active service in the special operation conditions such as high speed, high temperature, high retardation pressure, and the iron-based brake discs such as traditional cast iron plate or cast steel dish can't satisfy the now needs of railway transport high-speed overload.The lightweight brake disc that development can be satisfied the bullet train requirement is an important technology difficult problem that realizes the development of rail truck light weight high speed
Because aluminum matrix composite has the series of advantages such as density low-intensity and modulus high wear resistance expansion coefficient low thermal conductivity height and heat dissipation rate be fast, so adopt the aluminum matrix composite brake disc can greatly alleviate the unsprung weight of rolling stock, improve the dynamic performance of train, and significantly reduce the surface temperature of brake disc, improve the aluminium base brake disc of rolling stock Operation safety and be subject under arms the strong friction effect of brake lining in the process, not only fretting wear can occur, also the operation kinetic transformation of train can be become heat energy can be divided into five parts by the heat that the braking energy conversion produces: first portion's heat loss is in air, the second portion heat conducts to radiating fin, the third part heat conducts to wheel hub, the 4th part heat conducts to brake lining, the 5th part heat causes the structure and material of rubbing surface intensification brake disc and brake lining to increase first to tetrameric heat share as far as possible, and suitably reduce by the 5th part heat in recent years, some developed countries are all updating the structure and material of brake disc, the ability of making every effort to improve the heat dissipation ventilation effect of brake disc and improving brake disc opposing fire damage is according to material, processing technology is different with the application operating mode, there is larger difference in the structure of brake disc, this is mainly reflected in minute body disc and integral disc, cylinder muscle and sheet muscle, bolt hole, the quantity of radiation hole does not wait, because concrete application operating mode is different, also there is notable difference in the size of same class brake disc
The temperature rise rate of brake disc rubbing surface is higher than the temperature rise rate of brake disc radiating fin, heat dissipation potential is lower than the ability of radiating fin, this is so that the temperature rise of the two far can not reach synchronous effect, and the thermal expansion that finally causes rubbing surface is subject to the serious constraint while of radiating fin, the quantity increase of brake disc pawl can improve the temperature homogeneity of brake disc inboard, thereby the braking thermal stress of brake disc is decreased, and the quantity of brake disc pawl is more, and it is more obvious that thermal stress reduces; The existence of connecting tendon also has certain positive impact to the braking thermal stress between the brake disc pawl; The increase of rubbing surface thickness has increased the thermal capacity of brake disc, the thermal capacity of rubbing surface especially, so the temperature of the braking thermal stress of brake disc and rubbing surface all obviously reduce, but along with the weight of the increase brake disc of rubbing surface thickness obviously increases; The composite structure of rubbing surface can significantly reduce the braking thermal stress of brake disc, and is less on the maximum temperature rise impact of rubbing surface.
The model utility content
The purpose of this utility model is to provide a kind of thermal diffusivity good, thermal fatigue resistance, freedom from cracking, the efficient long-life three-dimensional network silicon carbide of the ventilation slot structure with permeability of the bullet train emergency braking operating mode that is applicable to speed per hour 380 km/h that non-deformability is strong strengthens the brake disc that Al alloy composite is made.
For this reason, the utility model provides following technological scheme: the utility model comprises brake disc, this brake disc front is provided with friction plate as rubbing surface, reverse side is provided with radiating fin, be provided with the axle dress hole that evenly arranges along warp-wise in the middle of the brake disc, it is characterized in that: described rubbing surface is axially arranged with several symmetrical dust-discharging slots, the brake disc reverse side is provided with the first radiating fin and second radiating fin radially radially of alternative arrangement, first radially radiating fin and second radially radiating fin be provided with and run through the radially permeability ventilation slot of radiating fin and dust-discharging slot, described radially radiating fin two ends end face is provided with the collection air port that arc groove forms, this collection air port is connected with described ventilation slot, the rubbing surface of described brake disc can also arrange one or more radiation holes, the position is in the central authorities of rubbing surface, according to temperature gradient distribution or evenly distributed.
As the further of such scheme improved and replenish, the utility model also comprises following technological scheme:
Described radiation hole runs through brake disc, also can be not run through brake disc.
Described first radially radiating fin and second radially the center line in the ventilation slot on the radiating fin and axle dress hole on same straight line, ventilation slot is take the running shaft of brake disc as the Rotational Symmetry center, extend to inner circumference from the excircle of brake disc, be through to radiating fin from rubbing surface, first radially radiating fin and axle dress hole boss be connected as a single entity.
First totally 12 of the quantity of radiating fin radially on the described brake disc, each radiating fin is provided with a permeability ventilation slot that runs through disk body, on the described brake disc second radially the quantity of radiating fin be 12,2 radiating fin comprising connecting end surface, each radiating fin is provided with a permeability ventilation slot that runs through disk body, that described ventilation slot cross section can be is trapezoidal, rectangle or other geometric forms, and the ventilation groove width is 7 ~ 20mm on the rubbing surface, and radiating fin end face ventilation groove width is 2 ~ 7 mm.
Ventilation slot on the described brake disc first radially radiating fin and second radially the radius in the collection air port of radiating fin two ends end face be the circular curve of 3 ~ 10mm.
Described brake disc cuts into two to the brake disc unit of six symmetries, installs by the positioning hole on two connecting end surfaces separately and is connected to holistic ring brake disc, is convenient to the installation needs of axle sabot; Simultaneously, brake disc is by adopting two brake disc unit structures to six symmetries, and its braking thermal stress can access significantly and descend, and reason is the disconnection of brake disc radiating fin, so that the structural constraint of brake disc self has obtained sufficient release
Described brake disc is overall structure, obtains a monoblock three-dimensional network silicon carbide by low-pressure casting method and strengthens aluminium base brake disc, and then processing obtains through high-accuracy mechanical.
Described brake disc adopts special construction and three-dimensional network silicon carbide reinforced aluminum matrix composites, can bear larger heat load, 450 ℃ to the room temperature the cold-and-heat resistent fatigue behaviour better, be difficult for producing the heat fatigue cracking that forms because of drag friction.
Compared with prior art, the utility model has the advantage of: the brake disc that 1, adopts three-dimensional network silicon carbide enhancing Al alloy composite to prepare has enough hot strengths and fatigue strength, have deformation performance that good anti-friction chafing causes and high thermal conductivity, in the time of can bearing High Rotation Speed centrifugal force and when braking brake lining pressure, have higher wear resistance; 2, adopt the ventilation slot structure of permeability, so that the heat that braking produces imports the ventilation slot from the rubbing surface of brake disc soon, ventilation slot in the tabular radiating fin also has leading role to air-flow in the brake disc, can turbulent flow occur the interior gas of minimizing dish, heat is taken away by air-flow and is dissipated in very soon in the air, brake disc has better draught capacity and the ability of reduce friction face temperature rise and buckling deformation, can reduce kinetic equation loss and play and arrange preferably the powder effect, thereby have high and stable friction factor, it is poor to have overcome simultaneously traditional braking dish temperature tolerance, thermal stress is concentrated, the problem of easy to crack even fracture; 3, ventilation slot also reduces the thermal stress of brake disc, and brake disc has preferably heat crack resistance and do not crack swashing under heat, the Quench condition, also radiation hole can be set on the brake disc, further improves retardation efficiency, has added Safety performance.4, because most of braking force is born by disc braking mechanism, reduce the heat load of tread brake, increased the wheel track life-span.The alternative import of the utility model realizes the manufacture localization of this product, reduces cost.Hence one can see that, each constituent element of brake disc varies in size to braking thermal stress role, therefore, the structural design of brake disc must consider each several part, and the present invention adopts low-pressure casting method to prepare the three-dimensional network silicon carbide that diameter reaches φ 670 mm ~ φ 750 mm to strengthen the Al alloy composite brake disc.
Description of drawings
Figure l is plan view of the present utility model.
Fig. 2 is the A-A sectional view of Fig. 1.
Fig. 3 is plan view of the present utility model.
Fig. 4 is the partial enlarged drawing at a place of Fig. 2.
Fig. 5 is rear view of the present utility model.
Fig. 6 is the B-B sectional view of Fig. 5.
Fig. 7 stereogram of the present utility model.
Wherein: 1 friction plate; 2, dust-discharging slot; 3, radiation hole; 4, ventilation slot; 5, axle dress hole; 6, the first radiating fin radially; 7, the second radiating fin radially; 8, brake disc; 9, collection air port.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is described in detail.
Mode of execution one: such as Fig. 1 ~ shown in Figure 7, the utility model comprises brake disc 8, brake disc 8 cuts into the brake disc unit of six symmetries, be connected to holistic ring brake disc by the installation of the positioning hole on two connecting end surfaces separately, brake disc 8 fronts are provided with friction plate 1 as rubbing surface, reverse side is provided with radiating fin, be provided with the axle dress hole 5 that evenly arranges along warp-wise in the middle of the brake disc 8, rubbing surface is axially arranged with several symmetrical dust-discharging slots 2, described brake disc 8 reverse side are provided with the first radiating fin 6 and second radiating fin 7 radially radially of alternative arrangement, first radially radiating fin 6 and second radially radiating fin 7 be provided with and run through the radially permeability ventilation slot 4 of radiating fin and dust-discharging slot 2, first radially radiating fin 6 and second radially the center line in the ventilation slot on the radiating fin 74 and axle dress hole 5 on same straight line, ventilation slot 4 is take the running shaft of brake disc 8 as the Rotational Symmetry center, extend to inner circumference from the excircle of brake disc 8, be through to radiating fin from rubbing surface, first radially the boss in radiating fin 6 and axle dress hole 5 be connected as a single entity, the sectional shape of described ventilation slot 4 can be trapezoidal, rectangle, the ventilation groove width is 7 ~ 20mm on the rubbing surface, and radiating fin end ventilation groove width is 2 ~ 7 mm; First totally 12 of the quantity of radiating fin 6 radially on the brake disc, each radiating fin is provided with a permeability ventilation slot 4 that runs through disk body, on the described brake disc second radially the quantity of radiating fin 7 be 12, comprising 2 radiating fin of connecting end surface, each radiating fin is provided with a permeability ventilation slot 4 that runs through disk body; Described radially radiating fin two ends end face is provided with the collection air port 9 that groove forms, and this collection air port 9 is connected with described ventilation slot 4, and its radius is the circular curve of 3 ~ 10mm; The rubbing surface of described brake disc 8 can also arrange one or more radiation holes 3 that do not run through brake disc 8, and the position is in the central authorities of rubbing surface, according to temperature gradient distribution or evenly distributed.
Mode of execution two: described radiation hole 3 can also be to run through brake disc 8.

Claims (6)

1. strong cooling brake disc of Novel high-speed train, comprise brake disc (8), this brake disc (8) front is provided with friction plate (1) as rubbing surface, reverse side is provided with radiating fin, be provided with the axle dress hole (5) that evenly arranges along warp-wise in the middle of the brake disc (8), it is characterized in that: described rubbing surface is axially arranged with several symmetrical dust-discharging slots (2), described brake disc (8) reverse side is provided with the first radiating fin (6) and second radiating fin (7) radially radially of alternative arrangement, first radially radiating fin (6) and second radially radiating fin (7) be provided with and run through the radially permeability ventilation slot (4) of radiating fin and dust-discharging slot (2), described radially radiating fin two ends end face is provided with the collection air port (9) that groove forms, this collection air port (9) is connected with described ventilation slot (4), the rubbing surface of described brake disc (8) arranges one or more radiation holes (3), the position is in the central authorities of rubbing surface, according to temperature gradient distribution or evenly distributed.
2. according to the strong cooling brake disc of the described a kind of Novel high-speed train of claim l, it is characterized in that: described radiation hole (3) runs through brake disc (8), or does not run through brake disc (8).
3. according to the strong cooling brake disc of the described a kind of Novel high-speed train of claim l, it is characterized in that: described first radially radiating fin (6) and second radially the center line in the ventilation slot (4) on the radiating fin (7) and axle dress hole (5) on same straight line, ventilation slot (4) is take the running shaft of brake disc (8) as the Rotational Symmetry center, extend to inner circumference from the excircle of brake disc (8), be through to radiating fin from rubbing surface, first radially the boss in radiating fin (6) and axle dress hole (5) be connected as a single entity, the sectional shape of described ventilation slot (4) is trapezoidal, rectangle, the ventilation groove width is 7 ~ 20mm on the rubbing surface, and radiating fin end ventilation groove width is 2 ~ 7 mm.
4. according to the strong cooling brake disc of the described a kind of Novel high-speed train of claim l, it is characterized in that: first totally 12 of the quantity of radiating fin (6) radially on the described brake disc, each radiating fin is provided with a permeability ventilation slot (4) that runs through disk body, on the described brake disc second radially the quantity of radiating fin (7) be 12, comprising 2 radiating fin of connecting end surface, each radiating fin is provided with a permeability ventilation slot (4) that runs through disk body.
5. according to the strong cooling brake disc of the described a kind of Novel high-speed train of claim l, it is characterized in that: the ventilation slot on the described brake disc (4) first radially radiating fin (6) and second radially the radius in the collection air port (9) of radiating fin (7) two ends end face be the circular curve of 3 ~ 10mm.
6. according to the strong cooling brake disc of the described a kind of Novel high-speed train of claim l, it is characterized in that: described brake disc (8) cuts into two to the brake disc unit of six symmetries, installs by the positioning hole on two connecting end surfaces separately and is connected to holistic ring brake disc
CN 201220450881 2012-09-06 2012-09-06 Novel strong heat-dissipation brake disc used for high-speed train Active CN202867654U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201220450881 CN202867654U (en) 2012-09-06 2012-09-06 Novel strong heat-dissipation brake disc used for high-speed train

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201220450881 CN202867654U (en) 2012-09-06 2012-09-06 Novel strong heat-dissipation brake disc used for high-speed train

Publications (1)

Publication Number Publication Date
CN202867654U true CN202867654U (en) 2013-04-10

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015169024A1 (en) * 2014-05-09 2015-11-12 房殊 Friction disk of metal/continuous-structure phase ceramic composite material and method for manufacturing same
CN106838064A (en) * 2017-04-17 2017-06-13 湖南世鑫新材料有限公司 A kind of bullet train brakes wheel disc with lightweight
CN110081102A (en) * 2019-04-13 2019-08-02 张健 A kind of chain of rings braking anti-lock brake disc
CN110170617A (en) * 2015-07-27 2019-08-27 江苏鼎泰工程材料有限公司 The brake disk mounted production method of the wheel of anti-buckling deformation

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2015169024A1 (en) * 2014-05-09 2015-11-12 房殊 Friction disk of metal/continuous-structure phase ceramic composite material and method for manufacturing same
CN110170617A (en) * 2015-07-27 2019-08-27 江苏鼎泰工程材料有限公司 The brake disk mounted production method of the wheel of anti-buckling deformation
CN106838064A (en) * 2017-04-17 2017-06-13 湖南世鑫新材料有限公司 A kind of bullet train brakes wheel disc with lightweight
CN110081102A (en) * 2019-04-13 2019-08-02 张健 A kind of chain of rings braking anti-lock brake disc
CN110081102B (en) * 2019-04-13 2020-10-13 莱州双力机械有限公司 Interlink braking anti-lock brake disc

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