CN108757776B - Split type lightweight brake disc - Google Patents
Split type lightweight brake disc Download PDFInfo
- Publication number
- CN108757776B CN108757776B CN201810803240.3A CN201810803240A CN108757776B CN 108757776 B CN108757776 B CN 108757776B CN 201810803240 A CN201810803240 A CN 201810803240A CN 108757776 B CN108757776 B CN 108757776B
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- brake disc
- mounting
- hole
- conical
- friction ring
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- 230000005540 biological transmission Effects 0.000 claims abstract description 39
- 229910000838 Al alloy Inorganic materials 0.000 claims description 9
- 239000010959 steel Substances 0.000 claims description 8
- 229910001018 Cast iron Inorganic materials 0.000 claims description 7
- 229910001208 Crucible steel Inorganic materials 0.000 claims description 4
- 229910000639 Spring steel Inorganic materials 0.000 claims description 4
- 239000007769 metal material Substances 0.000 claims description 4
- 229910000861 Mg alloy Inorganic materials 0.000 claims description 2
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 2
- 230000003044 adaptive effect Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 4
- 210000001503 joint Anatomy 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 229910001060 Gray iron Inorganic materials 0.000 description 5
- 239000000463 material Substances 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 239000013585 weight reducing agent Substances 0.000 description 4
- 238000005266 casting Methods 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/123—Discs; Drums for disc brakes comprising an annular disc secured to a hub member; Discs characterised by means for mounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/125—Discs; Drums for disc brakes characterised by the material used for the disc body
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/128—Discs; Drums for disc brakes characterised by means for cooling
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/1304—Structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/134—Connection
- F16D2065/1384—Connection to wheel hub
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/134—Connection
- F16D2065/1388—Connection to shaft or axle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/134—Connection
- F16D2065/1392—Connection elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/134—Connection
- F16D2065/1392—Connection elements
- F16D2065/1396—Ancillary resilient elements, e.g. anti-rattle or retraction springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0008—Ferro
- F16D2200/0013—Cast iron
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0008—Ferro
- F16D2200/0021—Steel
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2200/00—Materials; Production methods therefor
- F16D2200/0004—Materials; Production methods therefor metallic
- F16D2200/0026—Non-ferro
- F16D2200/003—Light metals, e.g. aluminium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a split type light brake disc, which comprises a brake disc cap, a friction ring, a positioning force transmission block, bolts and spring clamping pieces, wherein an outer ring mounting flange surface of the brake disc cap is in face-to-face connection with an inner ring mounting flange surface of the friction ring to form a brake disc mounting surface and a brake disc mounting surface connecting line, conical mounting holes and lightening holes are uniformly and alternately formed in the brake disc mounting surface at intervals, two adjacent conical mounting holes are alternately distributed in the front and back directions in the axial direction of the brake disc, the high line of each conical mounting hole is positioned on a mounting surface connecting line and is perpendicular to the brake disc mounting surface, and the geometric center of each lightening hole is positioned on the brake disc mounting surface connecting line; the positioning force transmission block is in a truncated cone shape, a threaded hole is formed in the upper bottom surface with a smaller diameter, and the brake disc cap is connected with the friction ring through the positioning force transmission block, the bolt and the spring card which are adaptively arranged in the conical mounting hole; the product has simple structure, and obviously reduces the weight and the cost while improving the use effect.
Description
Technical Field
The invention belongs to the technical field of automobile brake discs, and particularly relates to a split type lightweight brake disc structure.
Background
Along with the continuous improvement of new energy automobile industry outbreaks and emission regulations, the reduction of the weight of the whole automobile is an effective way for improving the endurance mileage of the automobile and reducing the emission of pollutants. The brake disc is used as an unsprung part, and the weight reduction of the brake disc has important significance in the aspects of improving the handling property of the whole vehicle, reducing the quality of the whole vehicle, improving the endurance mileage, reducing the pollutant emission and the like.
At present, the conventional brake disc is integrally cast by gray iron, and has the advantages of low cost, good performance and high technical maturity, but has the defect of heavy weight. With the continuous development of new material technology, a lightweight high-performance brake disc made of ceramic or carbon fiber composite materials appears, but only has a small amount of application on sports cars and high-end cars in consideration of complex preparation technology and high price.
In view of the various shortcomings of the brake discs described above, split brake discs have been studied abroad. The split type brake disc is characterized in that a traditional integral type brake disc is divided into a brake disc cap and a friction ring, the brake disc cap and the friction ring are made of different materials, and then the brake disc cap and the friction ring are combined through mechanical connection or other connection modes so as to meet the requirements of usability and light weight of the brake disc. For example, the CN102954130B patent describes a split brake disc with friction rings and disc caps made of gray iron and aluminum alloy, respectively. The friction ring and the brake disc cap are connected through rivets made of stainless steel alloy and steel belts made of high-strength spring steel. In view of the fact that the force transmission between the friction ring and the brake disc cap in this patent is mainly carried by the steel strip, a high requirement is placed on the carrying capacity of the steel strip, and there is a risk of failure of the steel strip. In CN107314066a and US4004661a patents, the joint of the brake disc cap and the friction ring is in a double-sided lap joint mode, then a mounting hole is formed on the lap joint surface, and the connection of the brake disc cap and the friction ring is realized by means of screw connection and the like. Most split brake discs currently employ such a lap joint. The connection matching surfaces are arranged on the brake disc cap and the friction ring due to the connection of the lapping edges, which is not beneficial to weight reduction of the brake disc. In the CN104653668A patent, another connection mode of split brake discs is provided-insert cast connection. The patent combines a brake disc cap made of aluminum alloy and a friction ring made of gray iron by insert casting. Because the casting technology level and stability, the thickness of the connecting surface, the processing mode and other factors can influence the connection strength of the brake disc cap and the friction ring, the adoption of the connecting mode has the risks of complex preparation technology, higher cost and difficult control of quality stability.
Disclosure of Invention
The invention aims to provide a split type lightweight brake disc which is lighter in weight and low in price compared with a traditional gray iron integrally cast disc; compared with a ceramic or carbon fiber composite material brake disc, the preparation process is simple and the cost is low; compared with the prior split type brake disc, the split type brake disc has the advantages of reliable connection, strong bearing capacity, better light weight effect, simple preparation process and the like.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the split type light brake disc is characterized by comprising a circular friction ring used for friction braking, wherein the inner ring of the friction ring is a circular friction ring inner ring mounting flange, the upper surface and the lower surface of the friction ring inner ring mounting flange are friction ring inner ring mounting flange surfaces, a central through hole formed by the inner ring surface of the friction ring inner ring mounting flange is a mounting hole, the outer ring of the bottom of a disc type brake disc cap which can be fixed on a hub is a circular brake disc cap outer ring mounting flange, the upper surface and the lower surface of the brake disc cap outer ring mounting flange are brake disc cap outer ring mounting flange surfaces, the brake disc cap is mounted in the mounting hole of the friction ring inner ring mounting flange in an adapting way through the brake disc cap outer ring mounting flange, the brake disc cap outer ring mounting flange surface and the corresponding friction ring inner ring mounting flange surface form a brake disc mounting surface, the joint of the outer ring surface of the mounting flange of the outer ring of the brake disc cap and the inner ring surface of the mounting flange of the friction ring forms a circle of circular brake disc mounting butt joint, the brake disc mounting butt joint forms a mounting surface connecting line on the brake disc mounting surface, a plurality of conical mounting holes are uniformly arranged on the brake disc mounting surface at intervals, the outer profile of each conical mounting hole is in a cone frustum shape, the height line of each conical mounting hole is positioned on the mounting surface connecting line and is perpendicular to the brake disc mounting surface, two adjacent conical mounting holes are reversely arranged in the axial direction of the brake disc, the brake disc mounting surface between the two adjacent conical mounting holes is provided with a lightening hole with a through hole structure, the geometric center of each lightening hole is positioned on the mounting surface connecting line, the distances between the two adjacent lightening holes are the same, the conical mounting holes are internally provided with a conical positioning force transmission block with the diameter of the upper bottom surface smaller than that of the lower bottom surface in an adapting mode, the upper bottom surface of each positioning force transmission block is provided with a threaded hole, a spring clamping piece is arranged above the threaded hole and is a sheet spring with the center higher than two sides, a round hole is arranged at the center of the spring clamping piece, the part, located on one side of the center round hole, of the spring clamping piece is spanned at the butt joint of the friction ring inner ring mounting flange and the positioning force transmission block, the part, located on the other side of the center round hole, of the spring clamping piece is spanned at the butt joint of the brake disc cap outer ring mounting flange and the positioning force transmission block, and a bolt penetrates through the center round hole of the spring clamping piece to be screwed in the threaded hole of the positioning force transmission block.
The further technical scheme comprises the following steps:
the brake disc cap is made of a light metal material.
The light metal material is aluminum alloy, magnesium alloy or titanium alloy.
The friction ring is made of cast iron or steel, and the positioning force transmission block is made of cast iron or steel.
The spring card is made of spring steel.
The conical taper of the conical mounting hole is consistent with that of the positioning force transmission block, and the conical taper of the conical mounting hole and the positioning force transmission block are both 10-30 degrees.
The center of the brake disc cap is provided with wheel axle through holes which are used for being matched with the wheel axle, and 3-8 hub bolt through holes which are uniformly distributed around the wheel axle through holes and are used for being matched with the hub bolts are arranged on the end face of the brake disc cap.
The beneficial effects of the invention after adopting the technical scheme are as follows:
1. according to the split type light-weight brake disc, the outer circular surface of the brake disc cap outer ring mounting flange and the inner circular surface of the friction ring inner ring mounting flange are in butt joint to form a brake disc mounting surface and a mounting surface connecting line, and a lightening hole is formed in the brake disc mounting surface. Compared with the method that the brake disc cap and the friction ring flange adopted by the reciprocating brake disc patent are lapped and then are connected through bolts or other connection modes, a layer of lapping surface is omitted, and the advantages of lighter weight are achieved.
2. According to the split type light-weight brake disc, as the brake disc cap and the friction ring are made of different materials, the thermal expansion coefficients of the brake disc cap and the friction ring are different. The expansion and contraction gap between the brake disc cap and the friction ring, which is caused by the thermal effect in the braking process, can be automatically compensated by the positioning force transmission blocks, the spring clamping pieces and the bolts which are alternately arranged on the mounting surface of the brake disc, so that the axial and radial floating of the brake disc cap and the friction ring can be realized.
3. The split type light brake disc is characterized in that a plurality of conical mounting holes are uniformly formed in a mounting surface of the brake disc at intervals, the outer contour of each conical mounting hole is in a truncated cone shape, two adjacent conical mounting holes are reversely arranged in the axial direction of the brake disc, and a truncated cone-shaped positioning force transmission block with the diameter of the upper bottom surface smaller than that of the lower bottom surface is adaptively mounted in each conical mounting hole. Therefore, when the positioning force transmission block is fixed in the conical mounting hole through the bolt and the spring clamping piece, the positioning force transmission block and the conical mounting hole can be tightly attached to each other, the influence on assembly caused by fit clearance between the positioning force transmission block and the conical mounting hole due to machining errors is avoided, and the mounting process is simplified.
4. According to the split type light-weight brake disc, the positioning force transmission block and the conical mounting hole are in a truncated conical shape, the stress surface of the positioning force transmission block is larger than that of a common cylindrical surface, so that the split type light-weight brake disc is beneficial to dispersing contact stress, and the bearing capacity and reliability of the split type light-weight brake disc are improved.
5. According to the split type lightweight brake disc, the traditional integral casting disc is split into the brake disc cap and the friction ring, wherein the brake disc cap is made of light metal with lighter density, particularly aluminum alloy is used for replacing original cast iron materials to achieve weight reduction, and heat generated in the braking process is easier to be dissipated through the brake disc cap due to the fact that the heat conductivity coefficient of the aluminum alloy is higher than that of cast iron, so that damage of heat accumulation to a braking system is reduced.
Drawings
The invention is further described below with reference to the accompanying drawings:
FIG. 1 is a top view of a split lightweight brake disc according to the present invention;
FIG. 2 is a bottom view of a split lightweight brake disc according to the present invention;
fig. 3 is a schematic structural view of a friction ring and a brake disc cap of the split type lightweight brake disc after the friction ring and the brake disc cap are mounted in an adaptive manner through a brake disc cap outer ring mounting flange and a friction ring inner ring mounting flange;
FIG. 4 is a schematic view of an exploded construction of a split lightweight brake disc according to the present invention;
FIG. 5 is a schematic cross-sectional view of a split lightweight brake disc according to the present invention;
FIG. 6 is an enlarged view in partial cross-section of the present invention;
in the figure: 1. a friction ring; 2. a brake disc cap; 3. positioning a force transmission block; 4. a spring card; 5. a bolt; 6. a brake disc cap outer ring mounting flange; 7. a friction ring inner ring mounting flange; 8. a lightening hole; 9. a mounting surface connecting line; 10. and a conical mounting hole.
Detailed Description
The invention is described in detail below with reference to the attached drawing figures:
as shown in fig. 1 to 6, the split type lightweight brake disc comprises a brake disc cap 2, a friction ring 1, a positioning force transmission block 3, a bolt 5 and a spring card 4. The brake disk cap 2 is preferably made of an aluminum alloy, which can achieve 15% weight reduction of the brake disk. The friction ring 1 and the positioning force-transmitting block 3 are preferably formed from gray cast iron, and the spring clip 4 is preferably formed from spring steel. In addition, because the heat conductivity coefficient of the aluminum alloy is higher than that of cast iron, the heat generated in the braking process can be more easily dissipated by adopting the aluminum alloy for preparing the brake disc cap 2, and the damage of heat accumulation to a braking system is reduced.
The inner ring of the friction ring 1 is a circle of annular friction ring inner ring mounting flange 7, the upper surface and the lower surface of the friction ring inner ring mounting flange 7 are both friction ring inner ring mounting flange surfaces, a central through hole formed by the inner ring surface of the friction ring inner ring mounting flange 7 is a mounting hole, the outer ring of the bottom of the disc-type brake disc cap 2 which can be fixed on the hub is a circle of annular brake disc cap outer ring mounting flange 6, the upper surface and the lower surface of the brake disc cap outer ring mounting flange 6 are both brake disc cap outer ring mounting flange surfaces, and the thickness of the brake disc cap outer ring mounting flange 6 is equal to that of the friction ring inner ring mounting flange 7. The brake disc cap 2 is adaptively arranged in the mounting hole of the friction ring inner ring mounting flange 7 through the brake disc cap outer ring mounting flange 6, a brake disc mounting surface is formed by the brake disc cap outer ring mounting flange surface and the corresponding friction ring inner ring mounting flange surface, a circle of circular brake disc mounting butt joint seam is formed at the butt joint position of the outer ring surface of the brake disc cap outer ring mounting flange 6 and the inner ring surface of the friction ring inner ring mounting flange 7, and a mounting surface connecting line 9 is formed on the brake disc mounting surface by the brake disc mounting butt joint seam. Compared with the butt-joint installation mode, which is adopted by the patent of the reciprocating brake disc, has the advantages that the repeated flange at the joint surface is reduced and the weight is lighter after the brake disc cap is lapped with the friction ring flange through bolts or other connection modes.
The brake disc is provided with a plurality of conical mounting holes 10 at intervals uniformly on the mounting surface of the brake disc, the outer contour of each conical mounting hole 10 is in a truncated cone shape, the high line of each conical mounting hole 10 is located on the mounting surface connecting line 9 and is perpendicular to the mounting surface of the brake disc, two adjacent conical mounting holes 10 are oppositely arranged in the axial direction of the brake disc, the brake disc mounting surface between the two adjacent conical mounting holes 10 is provided with a weight reducing hole 8 with a through hole structure, the geometric center of each weight reducing hole 8 is located on the mounting surface connecting line 9, the distances between the two adjacent weight reducing holes 8 are the same, and the weight of the whole brake disc is further reduced due to the arrangement of the vibration reducing holes 8.
And a conical positioning force transmission block 3 with the diameter of the upper bottom surface smaller than that of the lower bottom surface is adaptively arranged in each conical mounting hole 10. The positioning force transmission block 3 is consistent with the conical taper of the conical mounting hole 10, and the conical taper of the positioning force transmission block and the conical taper of the conical mounting hole are 20 degrees. The positioning force transmission block 3 and the conical mounting hole 10 are in a truncated conical shape, and the stress surface of the positioning force transmission block is larger than that of a common cylindrical surface, so that the positioning force transmission block is beneficial to dispersing contact stress, and the bearing capacity and reliability of the split type lightweight brake disc are improved.
The upper bottom surface of the positioning force transmission block 3 is provided with a threaded hole, a spring card 4 is arranged above the threaded hole, the spring card 4 is a flat projection rectangular, the center of the spring card 4 is higher than a sheet spring on two sides, a round hole is formed in the center of the spring card 4, the position, which is positioned on one side of the center round hole, of the spring card 4 is spanned at the butt joint of the friction ring inner ring mounting flange surface and the positioning force transmission block 3, the position, which is positioned on the other side of the center round hole, of the spring card 4 is spanned at the butt joint of the brake disc cap outer ring mounting flange surface and the positioning force transmission block 3, and a bolt 5 penetrates through the center round hole of the spring card 4 and is screwed in the threaded hole of the positioning force transmission block 3, so that the brake disc cap 2 and the friction ring 1 are connected.
In particular, when the positioning force transmission block 3 is fixed in the conical mounting hole 10 through the bolt 5 and the spring clamping piece 4, the positioning force transmission block 3 can be tightly attached to the conical mounting hole 10, the influence on assembly caused by a fit clearance between the positioning force transmission block 3 and the conical mounting hole 10 due to machining errors is avoided, and the mounting process is simplified. Furthermore, since the brake disc cap 2 and the friction ring 1 are made of different materials, their coefficients of thermal expansion are also different. The expansion and contraction clearance between the brake disc cap 2 and the friction ring 1, which is caused by the thermal effect in the braking process, can be automatically compensated by the positioning force transmission 3 blocks, the spring clamping pieces 4 and the bolts 5 which are alternately arranged on the mounting surface of the brake disc, so that the axial and radial floating of the brake disc cap and the friction ring can be realized.
The center of the brake disc cap 2 is provided with a wheel shaft through hole which is used for being matched with a wheel shaft, and the end face of the brake disc cap 2 is provided with 5 hub bolt through holes which are uniformly distributed around the wheel shaft through hole and are used for being matched with a hub bolt.
Claims (7)
1. The split type lightweight brake disc is characterized by comprising a circular friction ring (1) for friction braking, wherein the inner ring of the friction ring (1) is a circle of circular friction ring inner ring mounting flange (7), the upper surface and the lower surface of the friction ring inner ring mounting flange (7) are both friction ring inner ring mounting flange surfaces, a central through hole formed by the inner circular surface of the friction ring inner ring mounting flange (7) is a mounting hole, the outer ring of the bottom of a disc type brake disc cap (2) which can be fixed on a hub is a circle of circular brake disc cap outer ring mounting flange (6), the upper surface and the lower surface of the brake disc cap outer ring mounting flange (6) are both brake disc cap outer ring mounting flange surfaces, the brake disc cap (2) is mounted in the mounting hole of the friction ring inner ring mounting flange (7) in an adapting way through the brake disc cap outer ring mounting flange (6), the outer circular ring mounting flange surface and the corresponding friction ring inner ring mounting flange surface form a brake disc mounting surface, the joint of the outer circular ring of the brake disc cap mounting flange (6) and the inner circular ring surface of the friction ring (7) form a pair of circular connecting lines, the brake disc mounting holes are uniformly arranged on the conical mounting surface (10) and the conical mounting surface is provided with a plurality of conical disc mounting holes (10), the high line of each conical mounting hole (10) is positioned on a mounting surface connecting line (9) and is perpendicular to a brake disc mounting surface, two adjacent conical mounting holes (10) are reversely arranged in the axial direction of the brake disc, a weight reducing hole (8) with a through hole structure is formed in the brake disc mounting surface between the two adjacent conical mounting holes (10), the geometric center of each weight reducing hole (8) is positioned on the mounting surface connecting line (9), the distances between the two adjacent weight reducing holes (8) are the same, a conical positioning force transmission block (3) with the diameter of the upper bottom surface smaller than that of the lower bottom surface is installed in each conical mounting hole (10) in an adapting mode, a threaded hole is formed in the upper bottom surface of each positioning force transmission block (3), a spring clamp (4) is arranged above the threaded hole, the spring clamp (4) is a sheet spring with the center higher than two sides, a round hole is formed in the center of the spring clamp (4), the other side of one side of the round hole straddles the friction ring mounting flange (7) and the positioning joint (3) of the positioning flange (3), and the positioning clamp (4) is tightly screwed on the round hole (5) of the round hole of the outer ring.
2. A split lightweight brake disc as claimed in claim 1, characterized in that the brake disc cap (2) is made of a light metal material.
3. The split lightweight brake disk of claim 2, wherein the lightweight metal material is an aluminum alloy, a magnesium alloy, or a titanium alloy.
4. A split lightweight brake disc as claimed in claim 1, characterized in that the friction ring (1) is made of cast iron or steel and the positioning force-transmitting block (3) is made of cast iron or steel.
5. A split lightweight brake disc as claimed in claim 1, characterized in that the spring clips (4) are made of spring steel.
6. The split type lightweight brake disk according to claim 1, wherein the conical mounting hole (10) is consistent with the conical taper of the positioning force transmission block (3), and the conical taper of the conical mounting hole (10) and the conical taper of the positioning force transmission block (3) are both 10 degrees to 30 degrees.
7. The split type lightweight brake disc according to claim 1, wherein the center of the brake disc cap (2) is provided with a wheel axle through hole for being installed in an adaptive manner with a wheel axle, and 3-8 hub bolt through holes which are evenly distributed around the wheel axle through hole and are used for being matched with hub bolts are arranged on the end face of the brake disc cap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810803240.3A CN108757776B (en) | 2018-07-20 | 2018-07-20 | Split type lightweight brake disc |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810803240.3A CN108757776B (en) | 2018-07-20 | 2018-07-20 | Split type lightweight brake disc |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108757776A CN108757776A (en) | 2018-11-06 |
| CN108757776B true CN108757776B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810803240.3A Active CN108757776B (en) | 2018-07-20 | 2018-07-20 | Split type lightweight brake disc |
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| Country | Link |
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| CN (1) | CN108757776B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109681551B (en) * | 2018-11-23 | 2020-08-18 | 中南大学 | Lightweight titanium material joint for high-performance brake system and preparation method thereof |
| CN113915261A (en) * | 2021-10-16 | 2022-01-11 | 南京布雷尔汽车配件有限公司 | Combined brake disc |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0526268A (en) * | 1991-07-19 | 1993-02-02 | Izumi Ind Ltd | Brake disc and manufacture thereof |
| CN206830701U (en) * | 2017-05-15 | 2018-01-02 | 浙江零跑科技有限公司 | A kind of light-weighted brake disc structure |
| CN108253046A (en) * | 2018-03-27 | 2018-07-06 | 烟台胜地汽车零部件制造有限公司 | A kind of lightweight composite brake disc and its processing method |
| CN208935229U (en) * | 2018-07-20 | 2019-06-04 | 中国第一汽车股份有限公司 | Split type lightweight brake disc |
-
2018
- 2018-07-20 CN CN201810803240.3A patent/CN108757776B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0526268A (en) * | 1991-07-19 | 1993-02-02 | Izumi Ind Ltd | Brake disc and manufacture thereof |
| CN206830701U (en) * | 2017-05-15 | 2018-01-02 | 浙江零跑科技有限公司 | A kind of light-weighted brake disc structure |
| CN108253046A (en) * | 2018-03-27 | 2018-07-06 | 烟台胜地汽车零部件制造有限公司 | A kind of lightweight composite brake disc and its processing method |
| CN208935229U (en) * | 2018-07-20 | 2019-06-04 | 中国第一汽车股份有限公司 | Split type lightweight brake disc |
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|---|---|
| CN108757776A (en) | 2018-11-06 |
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