CN208268265U - A kind of anti-extrusion/shearing connection structure of composite brake disc - Google Patents
A kind of anti-extrusion/shearing connection structure of composite brake disc Download PDFInfo
- Publication number
- CN208268265U CN208268265U CN201820793306.0U CN201820793306U CN208268265U CN 208268265 U CN208268265 U CN 208268265U CN 201820793306 U CN201820793306 U CN 201820793306U CN 208268265 U CN208268265 U CN 208268265U
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- heavy platform
- connection structure
- stage heavy
- brake disc
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- 239000002131 composite material Substances 0.000 title claims abstract description 26
- 238000010008 shearing Methods 0.000 title claims abstract description 20
- 238000001125 extrusion Methods 0.000 title claims abstract description 18
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 26
- 210000003734 kidney Anatomy 0.000 claims description 6
- 239000000956 alloy Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 230000008646 thermal stress Effects 0.000 description 2
- 241000237858 Gastropoda Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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Abstract
The utility model discloses a kind of anti-extrusion/shearing connection structures of composite brake disc, the frictional disk of two groups of composite materials is locked in support plate two sides by the connection structure closed assembly, step through-hole is set on the frictional disk, bolt hole corresponding with step through-hole is set in the support plate, and step sliding slot is arranged in the both ends of the bolt hole；The connection structure includes two-stage heavy platform set, connection bolt and attaching nut, the two-stage heavy platform set is two groups, it is inserted into two groups of frictional disks and the step through-hole and step sliding slot of support plate alignment respectively, the two-stage heavy platform put on set there are two respectively with step through-hole and step sliding slot assembly cooperation outer step, the connection bolt inserts the inner hole and bolt hole covered across two groups of two-stage heavy platforms, and two groups of two-stage heavy platform sets are locked by attaching nut, by frictional disk and support chuck clamping locking.The connection of the utility model structure is reliable, can reduce connection structure between carbon pottery frictional disk and metal support disk and be squeezed and shear stress.
Description
Technical field
The utility model belongs to high-speed train braking technology, and in particular to a kind of composite brake disc of bullet train resists
Extruding/shearing connection structure.
Technical field
Brake is the critical component of bullet train, is related to bullet train operational safety, because its working environment complexity is disliked
Bad, maintenance replacement is inconvenient, it requires that brake product must have and brakes reliable, easy to maintain and longer service life.
High-speed train braking device, generally comprises following two: axis fills brake, disc-brake.Its axis fills brake
It is relatively conventional, extrusion friction is exactly carried out to the brake disc being fixed on axle by the frictional disk of hydraulic-driven, and then pass through
Friction brake axle, the axle-mounted brake disk that bullet train uses at present generally uses steel material, although its with technology at
Ripe degree is high, at low cost, is applicable in the wide feature of velocity interval is at home and abroad widely used, but there is system in braking
The heat of Moving plate tends not to the problem of dispersing in time, and as brake temperature increases, brake disc coefficient of friction is reduced, and heat occurs and declines
It exhausts, causes braking ability decline obvious.
With the progress of material development, technology of preparing, so that a variety of such as C/C composite materials, powdered metallurgical material, carbon are made pottery
The high temperature resistants such as composite material, heat resistanceheat resistant failure high-quality friction material developed and apply on bullet train, aircraft braking.It answers
Brake is filled with the axis on bullet train, and the structure type of use is that carbon is made pottery frictional disk and hub by the support plate of metal
The composite construction to link into an integrated entity is bolted together between carbon pottery frictional disk and support plate.Because of carbon ceramic composite material
Density is 1/4~1/3 of metal material or so, its thermal capacity is also small compared with metal material brake disc for the carbon pottery frictional disk of same volume,
Kinetic energy is converted into thermal energy when braking, increases brake temperature, and frictional disk surface temperature can reach 500 DEG C~600 DEG C, and high temperature
The bolt that can be led between carbon pottery frictional disk and support plate loosens, and prefastening load is reduced, and bolt still suffers from brake disc simultaneously
Shearing force between support plate greatly reduces the connection reliability of carbon pottery frictional disk and the service life of bolt.
Utility model content
The technical issues of the utility model solves is: causing bonding strength to reduce for the material property of carbon pottery frictional disk
Problem provides a kind of anti-extrusion/shearing connection structure of composite brake disc.
The utility model adopts the following technical solution realizes:
A kind of anti-extrusion/shearing connection structure of composite brake disc, the frictional disk 1 of two groups of composite materials are tied by the connection
Structure closed assembly is locked in 2 two sides of support plate,
Step through-hole 11 is set on the frictional disk 1, setting bolt hole corresponding with step through-hole in the support plate 2
22, step sliding slot 21 is arranged in the both ends of the bolt hole 22；
The connection structure includes two-stage heavy platform set 31, connection bolt 32 and attaching nut 33, and the two-stage heavy platform set 31 is
It two groups, is inserted into two groups of frictional disks and the step through-hole 11 and step sliding slot 21 of support plate alignment respectively, the two-stage heavy platform
It is set on set 31 there are two the outer step respectively with step through-hole 11 and the assembly cooperation of step sliding slot 21, the connection bolt 32 inserts
Two groups of two-stage heavy platform sets 31 are locked across the inner hole and bolt hole 22 of two groups of two-stage heavy platform sets 31, and by attaching nut 33,
Frictional disk 1 and support plate 2 are clamped into locking.
Further, the cross section of the step sliding slot 21 is greater than corresponding outer step cross section on two-stage heavy platform set 31.
Further, the step sliding slot 21 in the support plate 2 is oval groove or kidney slot, the oval groove or kidney slot
Minimum diameter not less than two-stage heavy platform set 31 on corresponding outer step cross section maximum gauge.
Further, the step sliding slot 21 is clearance fit with corresponding outer step circumference on two-stage heavy platform set 31, single
Side fit clearance is 0.02-0.15mm.
Further, the step through-hole 11 is clearance fit with corresponding outer step circumference on two-stage heavy platform set 31, single
Side fit clearance is 0.02-0.15mm.
Further, neonychium is equipped between the outer step of the two-stage heavy platform set 31 and the step through-hole 11 of frictional disk 1
Circle 34.
Further, the chip shield 34 with a thickness of 0.2-0.5mm.
Further, the nut and attaching nut's countersunk head that the inner hole of the two-stage heavy platform set 31 is equipped with for connecting bolt are set
The interior step 312 set.
Further, the interior step 312 of two-stage heavy platform set 31 respectively with the nut and attaching nut that connect bolt 32
Pad is equipped with elastic washer respectively between 33.
In a kind of anti-extrusion/shearing connection structure of composite brake disc of the utility model, the frictional disk 1 is density
In 1.8~2.4g/cm3Composite carbon ceramic material, the support plate 2 be high temperature alloy.
The invention has the following beneficial effects:
(1), the connection structure between carbon pottery frictional disk and metal support disk has connection reliable, safeguards simple feature,
The setting covered by the two-stage heavy platform with two-stage outer step avoids connection bolt head or nut from acting directly on carbon pottery frictional disk
On, reduce extrusion stress suffered by carbon pottery frictional disk, prevents frictional disk from occurring damaged.
(2), the connection structure covered using two-stage heavy platform is arranged between brake disc and bolt, then it is heavy by reasonably selecting two-stage
The high-temperature alloy material of platform set solves and causes bolt under same temperature rise because bolt and brake disc thermal expansion coefficient are inconsistent
The problem of swell increment is greater than brake disc, reduces bolt load under pretension condition.
(3), the connection structure covered using two-stage heavy platform is arranged between brake disc and bolt reduces braking valve snail as far as possible
Keyhole diameter increases the friction area of carbon pottery frictional disk and brake lining, further increases braking friction, improving braking can
By the purpose of property.
(4), two-stage heavy platform covers one of outer step and is assemblied in the step sliding slot of metal support disk, with step sliding slot it
Between be gap-matched so that metal support disk has radial slippage function after high-temperature expansion, circumferential drag friction can be resisted
Power and radial thermal stress reduce the risk that connection bolt bears shearing force, improve making for connection bolt and carbon pottery frictional disk
With the service life, bullet train operation, braking energy consumption are reduced, bullet train company operation cost is greatly saved.
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Detailed description of the invention
Fig. 1 is the connection structure assembling schematic diagram that carbon is made pottery between frictional disk and support plate in embodiment.
Fig. 2 a is the perspective view of the two-stage heavy platform set in embodiment.
Fig. 2 b is the cross-sectional view of the two-stage heavy platform set in embodiment.
Fig. 3 is the step sliding slot schematic diagram in the support plate in embodiment.
Figure label:
1- frictional disk, 11- step through-hole；
2- support plate, 21- step sliding slot, 22- bolt hole；
3- connection structure, 31- two-stage heavy platform set, 311- level-one outer step, step in 312-, 313- second level outer step, 32-
Connect bolt, 33- attaching nut, 34- chip shield.
Specific embodiment
Embodiment
Referring to Fig. 1, the connection structure 3 of the present embodiment include the connection structure include two-stage heavy platform set 31, connection bolt 32,
Attaching nut 33 and chip shield 34；Step through-hole 11 is set on frictional disk 1, and setting is corresponding with step through-hole in support plate 2
Step sliding slot 21 is arranged in the both ends of bolt hole 22, bolt hole 22；Step through-hole of the two-stage heavy platform set 31 from carbon pottery frictional disk 1
11 are inserted into the step sliding slot 21 of support plate 2, and the level-one outer step 311 and second level outer step 313 on two-stage heavy platform set 31 are divided
It is not clearance fit with step through-hole 11 and step sliding slot 21.The inserting of bolt 32 is connected across two-stage heavy platform set 31 and support plate 2
On bolt hole 22 after attaching nut 33 lock, make pottery frictional disk 1 and support plate 2 of carbon is clamped by lock by two-stage heavy platform set 31
It is fixed.
As shown in Figure 2 a and 2 b, two-stage heavy platform set 31 uses high temperature alloy, wherein being equipped with outside level-one in excircle respectively
Step 311, inner hole are equipped with interior step 312, lower end is equipped with second level outer step 313.As shown in connection with fig. 1, level-one outer step 311 is even
Female connector contacts after being packed into the carbon pottery limit of frictional disk step through-hole 11, in order to protect carbon pottery frictional disk, in two-stage heavy platform set 31
The washer 34 of 0.2~0.5mm of thickness is equipped between level-one outer step 311 and the step through-hole 11 of carbon pottery frictional disk 1.Interior step
312 for connecting the countersunk head setting of bolt 32 and attaching nut 33.
Two-stage heavy platform set 31 uses high temperature alloy, and level-one outer step 311 is after two-stage heavy platform set is packed into and on frictional disk 1
The limit contact of step through-hole 11, in order to protect brake disc, in the level-one outer step 311 and brake disc 1 of two groups of two-stage heavy platform sets 31
Step through-hole 11 between pad be equipped with thickness in the chip shield 34 of 0.2-0.5mm, and the step height of level-one outer step 311
No more than the interior step depth of step through-hole 11, and brake disc friction consumption thickness appropriate, level-one between outer land should be reserved
Retaining unilateral gap between the excircle of rank 311 and the inner wall of step through-hole 11 is 0.02-0.15mm, avoids level-one outer step
311 direct contact actions are on the frictional disk inner wall of step through-hole 11.Interior step 312 is for connecting bolt 32 and attaching nut 33
Countersunk head setting, the nut and attaching nut 33 for connecting bolt 32 can be hidden in inside two groups of two-stage heavy platforms set 31, at two groups
Pad is equipped with elastic washer, the company of offer respectively between the interior step 312 of two-stage heavy platform set and the nut and attaching nut that connect bolt
Pretightning force between connecting bolt and attaching nut.
The axial locking power of connection bolt 32 and attaching nut 33 act on the interior step 312 of two-stage heavy platform set 31,
Under the coupling mechanism force for connecting bolt 32 and attaching nut 33, two-stage heavy platform set 31 is acted on by level-one outer step 311 and washer 34
In brake disc 1, carbon pottery frictional disk is compressed in opposite directions, this avoid the coupling mechanism forces of screw bolt and nut to act directly on carbon pottery friction
On disk, the abrasion of carbon pottery frictional disk junction is caused.
It is inserted into the step sliding slot 21 of support plate 2 in conjunction with the second level outer step 313 referring to Fig. 3, two-stage heavy platform set 31, with
The minimum diameter of 21 clearance fit of step sliding slot, step sliding slot 21 use oval groove or kidney slot, oval groove or kidney slot is not small
Maximum gauge in 313 cross section of second level outer step, and the second level outer step 313 on step sliding slot 21 and two-stage heavy platform set 31
It is gap-matched between circumference, unilateral fit clearance is 0.02-0.15mm, and second level outer step 313 is equivalent to protrusion and sets at this time
The straight end-face key at 31 top of two-stage heavy platform set is set, and slides and is assemblied in the step sliding slot 21 of support plate 2, so that support plate 2
Have micro radial slippage function after expanded by heating, circumferential braking friction and radial thermal stress can be resisted, reduce two-stage
Heavy platform covers 31 and connects shear stress caused by the coefficient of expansion difference that bolt 32 is made pottery between frictional disk and support plate by carbon,
It reduces connection structure and bears the risk of shearing force, so that the reliability of connection and the service life of bolt be made to be guaranteed.
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 (10)
1. a kind of anti-extrusion/shearing connection structure of composite brake disc, it is characterised in that: the frictional disk (1) of two groups of composite materials
Support plate (2) two sides are locked in by the connection structure closed assembly,
Step through-hole (11) are set on the frictional disk (1), setting bolt corresponding with step through-hole is logical on the support plate (2)
Step sliding slot (21) are arranged in the both ends in hole (22), the bolt hole (22)；
The connection structure includes two-stage heavy platform set (31), connection bolt (32) and attaching nut (33), the two-stage heavy platform set
(31) it is two groups, is inserted into two groups of frictional disks and the step through-hole (11) and step sliding slot (21) of support plate alignment respectively, institute
State the outer step cooperated respectively with step through-hole (11) and step sliding slot (21) assembly there are two setting on two-stage heavy platform set (31), institute
Connection bolt (32) inserting is stated across the inner hole and bolt hole (22) of two groups of two-stage heavy platform sets (31), and passes through attaching nut
(33) two groups of two-stage heavy platform sets (31) are locked, frictional disk (1) and support plate (2) are clamped into locking.
2. a kind of anti-extrusion/shearing connection structure of composite brake disc according to claim 1, the step sliding slot (21)
Cross section be greater than two-stage heavy platform set (31) on corresponding outer step cross section.
3. anti-extrusion/shearing connection structure of a kind of composite brake disc according to claim 2, on the support plate (2)
Step sliding slot (21) be oval groove or kidney slot, the minimum diameter of the oval groove or kidney slot is not less than two-stage heavy platform set
(31) maximum gauge of corresponding outer step cross section on.
4. a kind of anti-extrusion/shearing connection structure of composite brake disc according to claim 3, the step sliding slot (21)
It is clearance fit with outer step circumference corresponding on two-stage heavy platform set (31), unilateral fit clearance is 0.02-0.15mm.
5. a kind of anti-extrusion/shearing connection structure of composite brake disc according to claim 4, the step through-hole (11)
It is clearance fit with outer step circumference corresponding on two-stage heavy platform set (31), unilateral fit clearance is 0.02-0.15mm.
6. a kind of anti-extrusion/shearing connection structure of composite brake disc according to claim 5, the two-stage heavy platform set
(31) chip shield (34) are equipped between the step through-hole (11) of outer step and frictional disk (1).
7. a kind of anti-extrusion/shearing connection structure of composite brake disc according to claim 6, the chip shield (34)
With a thickness of 0.2-0.5mm.
8. a kind of anti-extrusion/shearing connection structure of composite brake disc according to claim 1, the two-stage heavy platform set
(31) inner hole is equipped with the nut for connecting bolt and the interior step (312) of attaching nut's countersunk head setting.
9. a kind of anti-extrusion/shearing connection structure of composite brake disc according to claim 8, the two-stage heavy platform set
(31) pad is equipped with elastic cushion to interior step (312) respectively between the nut for connecting bolt (32) and attaching nut (33) respectively
Circle.
10. a kind of anti-extrusion/shearing connection structure of composite brake disc according to claim 1 to 9, described
Frictional disk (1) is density in 1.8~2.4g/cm3Composite carbon ceramic material, the support plate (2) be high temperature alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820793306.0U CN208268265U (en) | 2018-05-25 | 2018-05-25 | A kind of anti-extrusion/shearing connection structure of composite brake disc |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820793306.0U CN208268265U (en) | 2018-05-25 | 2018-05-25 | A kind of anti-extrusion/shearing connection structure of composite brake disc |
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|---|---|
| CN208268265U true CN208268265U (en) | 2018-12-21 |
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|---|---|---|---|
| CN201820793306.0U Active CN208268265U (en) | 2018-05-25 | 2018-05-25 | A kind of anti-extrusion/shearing connection structure of composite brake disc |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869423A (en) * | 2019-03-21 | 2019-06-11 | 中国铁道科学研究院集团有限公司 | A kind of carbon pottery axle-mounted brake disk suitable for high-speed EMUs |
| CN110608249A (en) * | 2019-09-27 | 2019-12-24 | 南京中盛铁路车辆配件有限公司 | Composite material wheel-mounted brake disc for high-speed train |
| CN110617285A (en) * | 2019-09-27 | 2019-12-27 | 南京中盛铁路车辆配件有限公司 | Composite material shaft-mounted brake disc for high-speed train |
| CN111503184A (en) * | 2020-04-22 | 2020-08-07 | 西安航空制动科技有限公司 | Carbon ceramic brake disc for heavy-duty truck |
| CN112644218A (en) * | 2020-12-29 | 2021-04-13 | 封鸿涛 | External anti-skidding device of getting rid of poverty of vehicle wheel hub |
| CN112644219A (en) * | 2020-12-29 | 2021-04-13 | 封鸿涛 | External anti-skidding device of getting rid of poverty of vehicle wheel hub |
| CN113339427A (en) * | 2021-05-13 | 2021-09-03 | 东风汽车集团股份有限公司 | In-wheel motor brake disc and mounting structure thereof |
-
2018
- 2018-05-25 CN CN201820793306.0U patent/CN208268265U/en active Active
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869423A (en) * | 2019-03-21 | 2019-06-11 | 中国铁道科学研究院集团有限公司 | A kind of carbon pottery axle-mounted brake disk suitable for high-speed EMUs |
| CN110608249A (en) * | 2019-09-27 | 2019-12-24 | 南京中盛铁路车辆配件有限公司 | Composite material wheel-mounted brake disc for high-speed train |
| CN110617285A (en) * | 2019-09-27 | 2019-12-27 | 南京中盛铁路车辆配件有限公司 | Composite material shaft-mounted brake disc for high-speed train |
| CN111503184A (en) * | 2020-04-22 | 2020-08-07 | 西安航空制动科技有限公司 | Carbon ceramic brake disc for heavy-duty truck |
| CN112644218A (en) * | 2020-12-29 | 2021-04-13 | 封鸿涛 | External anti-skidding device of getting rid of poverty of vehicle wheel hub |
| CN112644219A (en) * | 2020-12-29 | 2021-04-13 | 封鸿涛 | External anti-skidding device of getting rid of poverty of vehicle wheel hub |
| CN113339427A (en) * | 2021-05-13 | 2021-09-03 | 东风汽车集团股份有限公司 | In-wheel motor brake disc and mounting structure thereof |
| CN113339427B (en) * | 2021-05-13 | 2022-08-30 | 东风汽车集团股份有限公司 | In-wheel motor brake disc and mounting structure thereof |
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