CN201554802U - Shaft mounted type brake disc of high speed train - Google Patents
Shaft mounted type brake disc of high speed train Download PDFInfo
- Publication number
- CN201554802U CN201554802U CN2009202555856U CN200920255585U CN201554802U CN 201554802 U CN201554802 U CN 201554802U CN 2009202555856 U CN2009202555856 U CN 2009202555856U CN 200920255585 U CN200920255585 U CN 200920255585U CN 201554802 U CN201554802 U CN 201554802U
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- brake disc
- brake
- shaft mounted
- disc unit
- diametral rib
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Abstract
A shaft mounted type brake disc of a high speed train is characterized in that the brake disc comprises two semi-annular brake disc units, wherein, the two brake disc units are connected into a complete ring-shaped brake disc; a semi-circle ring shaped brake disc surface is arranged on one side of each brake disc unit; a shaft mounted hole concave platform is arranged on the brake disc units and in the position on the inner edge of the brake disc surface; a shaft mounted lug boss is arranged on the back side of the shaft mounted hole concave platform; a shaft mounted hole is formed in the shaft mounted hole lug boss; a first radial fin and a second radial fin are arranged on the other side of the brake disc unit alternately; two radial connection fins are respectively arranged at the two bottom ends of the brake disc units; connection holes are formed on the radial connection fins; the bottom ends of the radial connection fins serve as connecting end surfaces; and the two brake disc units are connected through the two connecting end surfaces respectively. Compared with the tread brake manner, the shaft mounted type brake disc of the high speed train adopts disk braking which has the characteristics of great capability of kinetic energy transformation in parking brake, good friction performance, steady friction coefficient, little speed variation along with the train, and smooth brake.
Description
Technical field
The utility model relates to field of track traffic, is the key components and parts of bullet train, the shaft-mounted brake disc of especially a kind of bullet train.
Background technique
At present, simple, the safety, reliable of disc braking mechanism.Because the development of bullet train, disc braking has obtained using more widely and studying.Because necessary primary technology when braking technology is the train high speed operation.High-speed train braking power is the cube of speed, when emergency braking, the highest instantaneous braking work of being born on every axle is up to tens of times of its traction power, brake rigging will bear huge energy and effectively brake, its service condition is very harsh, and the high-performance of brake friction material is the important assurance of bullet train safe operation.According to high-speed train braking systems technology condition, the 300km/h bullet train adopts power, dish type and track composite braking mode, should be in 3700 meters at the emergency stopping distance of composite braking under the 300km/h initial velocity.Under normal circumstances should preferentially and give full play to the dynamic braking ability, with air damping (disc braking) by way of compensation, but under the situation of dead electricity based on air damping (disc braking).This shows that one of bullet train mode of braking commonly used is not only in disc braking, and be the important mode of braking that guarantees train operating safety.Brake disc is the critical component of disc brake, and its material correctness will produce material impact to performance, the train operating safety of disc braking mode.
Traditional tread brake mode, be about to brake shoe and be pressed in the mode of braking that obtains braking force on the wheel tread, be difficult to satisfy the train braking performance demands, and the disc braking mode, be about to brake lining and press the mode of braking that is installed in the brake disc on axletree or the wheel and obtains braking force, because its distinctive performance has become main friction catch mode.
Under the situation that train speed improves constantly, for alleviating the train deadweight, Forging Steel Brake Disc has appearred.This brake disc has higher intensity and toughness, also has higher hot-cracking resistance and wear resistance and fatigue resistance simultaneously, and long service life is comparatively ideal bullet train disc material, and world developed country all carries out deep research to Forging Steel Brake Disc.China has also successively developed similar low-alloy cast iron and Forging Steel Brake Disc on speed-increase train and vehicle, but, because the deficiency on structural design and material design and the preparation technology, there is the problem of the easy to crack even phenomenon of rupture of brake disc temperature tolerance difference, can't be applied on the braking device of high speed/heavy haul train.
Summary of the invention
The purpose of this utility model is to provide a kind of bullet train shaft-mounted brake disc, this brake disc is at the deficiency on traditional braking dish structural design and the preparation technology, overcome the problem of the easy to crack even fracture of brake disc temperature tolerance difference, satisfied the braking needs of high speed/heavy haul train.
The technical solution of the utility model is:
The shaft-mounted brake disc of a kind of bullet train, it comprises the brake disc unit of two semi-round ring shapes, two brake disc unit are connected to holistic ring brake disc, described brake disc unit one side is provided with the ring-like brake disk surface of semicircle, be positioned at brake disk surface inner edge place on the brake disc unit and be provided with axle dress hole concave station, axle dress hole concave station dorsal part is provided with axle dress hole boss, is provided with axle dress hole in the boss of axle dress hole; The brake disc unit opposite side is provided with first diametral rib and second diametral rib of alternately arranging, and brake disc unit two bottoms respectively are provided with a radially connection fin, and radially connection fin is provided with attachment hole, and radially the connection fin bottom is for connecting end face; By separately two of two brake disc unit connect end faces and connect, and are provided with connecting pin in the attachment hole of corresponding position.
The center line in described first diametral rib and axle dress hole is on same straight line, and first diametral rib is adorned a hole boss with axle and is connected as a single entity.
Form open heat dissipation channel between described first diametral rib and second diametral rib.
Described first diametral rib and the heat dissipation channel that radially formation is opened between the connection fin.
The quantity of first diametral rib is 6 on the described brake disc unit.
The quantity of second diametral rib is 5 on the described brake disc unit.Brake disc unit of the present utility model is an overall structure, and processing obtains through high-accuracy mechanical by a whole block material.
The beneficial effects of the utility model are:
The shaft-mounted brake disc of bullet train of the present utility model has following superiority:
1, has enough intensity, the pressure of brake lining when centrifugal force and braking when bearing high speed rotating;
2, have high and stable friction factor, to obtain good braking effect;
3, has higher wear resistance, to reduce the wearing and tearing that produce because of friction between card and brake lining;
4, have heat crack resistance preferably, brake disc is not cracked under sharp thermal quench condition;
5, have enough hot strengths and fatigue strength, have deformation performance that good anti-friction chafing causes and high thermal conductivity.
The shaft-mounted brake disc of bullet train of the present utility model is compared with the tread brake mode, the momentum transfer ability was big when the main feature of disc braking was stopping brake, frictional behaviour is good, friction factor is steady, change with train speed hardly, braking does not steadily produce vibration in the vehicle tread brake; No tread wear; Because most of braking force is born by disc braking mechanism, has reduced the heat load of tread brake, has increased the wheel track life-span.The alternative import of the utility model realizes the production domesticization manufacturing of this product, reduces cost.
Description of drawings
Fig. 1 is one of perspective view of brake disc unit of the present utility model.
Fig. 2 be brake disc unit of the present utility model perspective view two.
Fig. 3 is the perspective view of brake disc of the present utility model.
Fig. 4 is the plane structure schematic representation of brake disc of the present utility model.
Fig. 5 is the plane structure schematic representation of brake disc unit of the present utility model.
Fig. 6 is an A-A direction view among Fig. 5.
Fig. 7 is a B-B direction view among Fig. 5.
Fig. 8 is a C-C direction view among Fig. 5.
Fig. 9 is a D-D direction view among Fig. 5.
Figure 10 is an E-E direction view among Fig. 5.
Among the figure: 1 for brake disc unit, 2 for brake disk surface, 3 be first diametral rib, 4 be second diametral rib, 5 for connection fin radially, 50 for attachment hole, 51 for connect end face, 6 for an axle dress hole, 60 for an axle dress hole boss, 61 for an axle dress hole concave station, 7 be heat dissipation channel.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described:
The shaft-mounted brake disc of a kind of bullet train, it comprises the brake disc unit 1 of two semi-round ring shapes, two brake disc unit 1 are connected to holistic ring brake disc, described brake disc unit 1 one sides are provided with the ring-like brake disk surface of semicircle 2, be positioned at brake disk surface 2 inner edge places on the brake disc unit 1 and be provided with axle dress hole concave station 61, axle dress hole concave station 61 dorsal parts are provided with axle dress hole boss 60, are provided with axle dress hole 6 in the axle dress hole boss 60, and axle dress hole 6 is a through hole; Brake disc unit 1 opposite side is provided with first diametral rib 3 and second diametral rib of alternately arranging 4,1 liang of bottom of brake disc unit respectively is provided with a radially connection fin 5, radially connection fin 5 is provided with two attachment holes 50, and radially connection fin 5 bottoms are for connecting end face 51; Two brake disc unit 1 two by separately connect end faces 51 and connect, and are provided with connecting pin in the attachment hole 50 of corresponding position, make two secondary brake disc unit 1 be connected to an integral body, and guarantee enough join strengths.
The center line in described first diametral rib 3 and axle dress hole 6 is on same straight line, and first diametral rib 3 is adorned a hole boss 60 with axle and is connected as a single entity, to increase the intensity of brake disc unit 1.
Form open heat dissipation channel 7 between first diametral rib 3 and second diametral rib 4.
First diametral rib 3 and the heat dissipation channel 7 that radially formation is opened between the connection fin 5.
The quantity of first diametral rib 3 is 6 on the brake disc unit 1.
The quantity of second diametral rib 4 is 5 on the brake disc unit 1.
The shaft-mounted brake disc of bullet train of the present utility model adopts special construction and advanced material, can bear bigger heat load, 600 degrees centigrade 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.
Have wear resistance preferably, friction factor satisfies brake request when mating with the copper-base powder metallurgy brake lining, and can keep stable.
Have good comprehensive mechanical performance, can satisfy the requirement of strength under the brake disc service condition shown in the table 1:
Requirement of strength table under the table 1. brake disc service condition.
| Yield strength Kgf/mm 2{MPa} | Tensile strength Kgf/mm 2{MPa} | Specific elongation % | Hardness HB |
| More than the 75{735} | More than the 90{882} | More than 15 | More than 270 |
The technological process of production brake disc of the present utility model is as follows:
1, rough turn: it is rough turn to size that the blank forging is pressed process chart;
2, rough mill: rough mill to size by drawing;
3, car: by technological requirement finish turning upper and lower surface;
4, draw: mark the eccentric position line of center line and 4.5 finish-millings, the line of position of pin-and-hole;
5, mill: separate disk body according to line, stay allowance for finish, mark for every group;
6, assembling: connect two brake disc unit 1 with four connecting pins, two discs that will match compress, and two brake disc unit 1 connect end face 51 and fit tightly mutually;
7, bore: by the drawing driller step hole of planting;
8, finish turning: according to the technological requirement finish turning to size;
9, bore, mill: get out axle dress hole 6 and circular arc, chamfering, and groove milling are stood up clamping and are milled fillet and chamfering;
10, pincers: deburring, chamfering.
The utility model makes full use of cad tools when design, set up the digital assay platform based on structure and heat transfer coupled wave theory.Set up the digital assay platform, heat, thermal distortion and different braking dish structure heat dispersion that the brake disc of different structure is carried out under the various damped conditions calculate simulation analysis, research brake disc temperature variation, temperature field distribution and retro-speed, brake disc structure correlation, test in conjunction with physical object simulating, set up the database of brake disc structure, braking force and temperature variation, the Optimal Structure Designing of guidance system Moving plate.
The utility model is on the basis of friction and Wear Study, be calculated as basic means with the computer temperature field stimulation, the verification condition of determining as boundary conditions according to true temperature field measurement result, analyze friction surface temperature under friction speed/pressure condition, according to the relation between material temperature and the tissue, the heat fade mechanism of analysis of material friction and wear characteristic proposes based on the friction temperature field active control technology route that improves friction and wear characteristic; Carry out the research of microcosmic thermal stress, the mechanism of analysis of material generation thermal fatigue wearing and tearing proposes the wearing and tearing active control strategies; Carry out the research of friction pair macro-thermal stress field, analyze frictional heat fatigue crack initiation, expansion basic law and with the relation of material structure, propose to improve the technology path of brake disc thermal fatigue cracking drag and based on the brake disc crack size of safe operation, the control criterion of form; According to heat dissipation mechanism, propose to improve the brake structural design principle and the improvement strategy thereof of brake heat performance.The germinating and the extended attribute of the comprehensive study material capacity of heat transmission, high temperature reduction characteristic, friction and wear characteristic and fatigue crack propose the further optimizing design scheme of braking pair materials from joining secondary whole angle.
Brake disc unit 1 of the present utility model is an overall structure, the employing height is pure develops cold-resistant thermal fatigue disc material with micro-alloying technology, utilize computer simulation, material sample performance test, visualization casting technology, finally realize the high performance of disc material; With the computer simulation emulation technology is means, realizes the design of brake disc structure innovation; By material property testing, the retardation test of 1: 1 power platform and the service testing of brake disc/brake lining, finally prepare the disc braking fastness that satisfies speed per hour high-speed train braking performance requirement more than 200 kilometers, realize the large-scale production of steel Moving plate.
On the basis of finishing the development of brake disc exemplar, carry out the mass production capabilities research of brake disc, by optimizing material industry production technology, brake disc processing technology, determine to be fit to the brake disc production procedure of industrialized mass production, thereby form the mass production capabilities of brake disc, satisfy speed per hour more than 200 kilometers bullet train to the demand of brake disc.
Claims (5)
1. shaft-mounted brake disc of bullet train, it is characterized in that it comprises the brake disc unit (1) of two semi-round ring shapes, two brake disc unit (1) are connected to holistic ring brake disc, described brake disc unit (1) one side is provided with the ring-like brake disk surface of semicircle (2), be positioned at brake disk surface (2) inner edge place on the brake disc unit (1) and be provided with axle dress hole concave station (61), axle dress hole concave station (61) dorsal part is provided with axle dress hole boss (60), is provided with axle dress hole (6) in the axle dress hole boss (60); Brake disc unit (1) opposite side is provided with first diametral rib (3) and second diametral rib of alternately arranging (4), brake disc unit (1) two bottom respectively is provided with a radially connection fin (5), radially connection fin (5) is provided with attachment hole (50), and radially connection fin (5) bottom is for connecting end face (51); Two brake disc unit (1) connect by two connection end faces (51) separately.
2. the shaft-mounted brake disc of bullet train according to claim 1, the center line that it is characterized in that described first diametral rib (3) and axle dress hole (6) are on same straight line, and first diametral rib (3) is adorned a hole boss (60) with axle and is connected as a single entity.
3. the shaft-mounted brake disc of bullet train according to claim 1 is characterized in that forming between described first diametral rib (3) and second diametral rib (4) open heat dissipation channel (7).
4. the shaft-mounted brake disc of bullet train according to claim 1 is characterized in that described first diametral rib (3) and radially forms open heat dissipation channel (7) between the connection fin (5).
4. the shaft-mounted brake disc of bullet train according to claim 1, the quantity that it is characterized in that last first diametral rib of described brake disc unit (1) (3) is 6.
5. the shaft-mounted brake disc of bullet train according to claim 1, the quantity that it is characterized in that last second diametral rib of described brake disc unit (1) (4) is 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202555856U CN201554802U (en) | 2009-11-23 | 2009-11-23 | Shaft mounted type brake disc of high speed train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202555856U CN201554802U (en) | 2009-11-23 | 2009-11-23 | Shaft mounted type brake disc of high speed train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201554802U true CN201554802U (en) | 2010-08-18 |
Family
ID=42614484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202555856U Expired - Fee Related CN201554802U (en) | 2009-11-23 | 2009-11-23 | Shaft mounted type brake disc of high speed train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201554802U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900794A (en) * | 2011-07-28 | 2013-01-30 | 常州南车铁马科技实业有限公司 | Split-type train brake disc |
| CN103883649A (en) * | 2014-04-18 | 2014-06-25 | 北京交通大学 | Shaft assembly type rail vehicle brake disc |
| CN104603491A (en) * | 2012-09-07 | 2015-05-06 | 新日铁住金株式会社 | Brake disc for railway vehicle |
| CN105114492A (en) * | 2015-07-20 | 2015-12-02 | 曾奇夫 | Combined type anti-squat wheel-mounted brake disc for railway vehicle and mounting and dismounting methods of combined type anti-squat wheel-mounted brake disc |
| CN107882899A (en) * | 2017-11-28 | 2018-04-06 | 山东浩信浩德精密机械有限公司 | Brake disc |
| CN109654136A (en) * | 2017-10-11 | 2019-04-19 | 庆昌产业株式会社 | Ventilated brake disc |
| EP3591253A1 (en) | 2018-06-14 | 2020-01-08 | Bendix Spicer Foundation Brake LLC | Multi-piece rotor for use with an electric wheel end drive motor |
-
2009
- 2009-11-23 CN CN2009202555856U patent/CN201554802U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102900794A (en) * | 2011-07-28 | 2013-01-30 | 常州南车铁马科技实业有限公司 | Split-type train brake disc |
| CN104603491A (en) * | 2012-09-07 | 2015-05-06 | 新日铁住金株式会社 | Brake disc for railway vehicle |
| CN104603491B (en) * | 2012-09-07 | 2017-09-15 | 新日铁住金株式会社 | Brake Disc of Railway Car |
| CN103883649A (en) * | 2014-04-18 | 2014-06-25 | 北京交通大学 | Shaft assembly type rail vehicle brake disc |
| CN105114492A (en) * | 2015-07-20 | 2015-12-02 | 曾奇夫 | Combined type anti-squat wheel-mounted brake disc for railway vehicle and mounting and dismounting methods of combined type anti-squat wheel-mounted brake disc |
| CN109654136A (en) * | 2017-10-11 | 2019-04-19 | 庆昌产业株式会社 | Ventilated brake disc |
| CN107882899A (en) * | 2017-11-28 | 2018-04-06 | 山东浩信浩德精密机械有限公司 | Brake disc |
| EP3591253A1 (en) | 2018-06-14 | 2020-01-08 | Bendix Spicer Foundation Brake LLC | Multi-piece rotor for use with an electric wheel end drive motor |
| US10704627B2 (en) | 2018-06-14 | 2020-07-07 | Bendix Spicer Foundation Brake Llc | Multi-piece rotor for use with an electric wheel end drive motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100818 Termination date: 20101123 |