CN109488709B - Lightweight split type brake disc with heat radiation structure - Google Patents
Lightweight split type brake disc with heat radiation structure Download PDFInfo
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- CN109488709B CN109488709B CN201811592413.8A CN201811592413A CN109488709B CN 109488709 B CN109488709 B CN 109488709B CN 201811592413 A CN201811592413 A CN 201811592413A CN 109488709 B CN109488709 B CN 109488709B
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- Prior art keywords
- heat dissipation
- ring
- brake disc
- heat radiation
- ribs
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- 230000005855 radiation Effects 0.000 title claims description 22
- 230000017525 heat dissipation Effects 0.000 claims abstract description 53
- 238000001338 self-assembly Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 14
- 238000001816 cooling Methods 0.000 description 4
- 230000008646 thermal stress Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- 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
- F16D2065/1332—Structure external ribs, e.g. for cooling or reinforcement
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a lightweight split type brake disc with a heat dissipation structure, which is characterized in that the brake disc is composed of an upper disc body and a lower disc body and has a split type structure; the upper tray body and the lower tray body have the same structure and are mutually matched and then are fixed by a countersunk head inner hexagon bolt matched with a hexagonal thick nut, and an opening gasket for preventing loosening is arranged at the contact position of the hexagonal thick nut and the tray body; the three-ring type brake disc is characterized in that the disc body is of a three-ring type heat dissipation structure, the outer ring heat dissipation structure, the middle heat dissipation structure and the inner side support structure are arranged on the three-ring type heat dissipation structure, and certain structural relation is met among the heat dissipation structures, so that the brake disc body is lightened while the heat dissipation, the strength, the rigidity and other performances of the brake disc are guaranteed, convenience is brought to the self assembly of the brake disc and the assembly of the whole brake disc and a system main shaft.
Description
Technical Field
The invention relates to the technical field of disc brake, in particular to a lightweight split type brake disc with a heat dissipation structure for a disc brake.
Background
The brake disc is a key component in the disc brake, and braking is realized by compressing the brake pads on two sides of the brake disc to generate friction force, so that the safe and stable operation of the rotary system is ensured. In the braking process, the friction between the brake pads and the surface of the brake disc works, so that the kinetic energy of the system is quickly converted into heat for dissipation, the surface temperature of the brake disc is rapidly increased, and the heat generates temperature gradients in the transmission process of the brake disc, so that the inside of the brake disc generates thermal stress with different degrees, and the brake disc is deformed to influence the braking effect.
Therefore, it is necessary to design a brake disc that can effectively dissipate the heat converted from kinetic energy to prevent the brake disc from being deformed.
Disclosure of Invention
According to the technical problem that the surface temperature of the brake disc is increased suddenly and the heat transfer is uneven in the braking process, so that the brake disc is easy to deform, and the lightweight split type brake disc with the heat dissipation structure is provided. The invention mainly utilizes a split structure, and adds a three-ring type heat dissipation structure on the brake disc body, so as to reduce the difference of thermal stress generated by the temperature gradient in the brake disc due to heat in the braking process. The split structure enables the split structure to release along the axial direction, and the heat dissipation structure accelerates heat conduction; the three-ring type heat dissipation structure ensures the strength of the brake disc, simultaneously lightens the brake disc and improves the utilization rate of the brake disc material.
The invention adopts the following technical means:
a lightweight split brake disc with a heat radiation structure is characterized in that,
the brake disc consists of an upper disc body and a lower disc body and has a split structure; the upper tray body and the lower tray body have the same structure and are mutually matched and then are fixed by a countersunk head inner hexagon bolt matched with a hexagonal thick nut, and an opening gasket for preventing loosening is arranged at the contact position of the hexagonal thick nut and the tray body;
the disk body is three ring type heat radiation structure, has outer lane heat radiation structure, middle heat radiation structure and inboard bearing structure on it, satisfies the following relation between the above-mentioned heat radiation structure:
d 31 ＝(0.66～0.67)d mid ；
d 22 ＝(1.17～1.18)d mid ；
d 21 ＝(1.39～1.40)d mid ；
d 12 ＝(1.51～1.52)d mid ；
the outer ring radiating structure, the middle radiating structure and the inner side supporting structure are respectively defined as a first circular ring, a second circular ring and a third circular ring from outside to insideA ring, wherein: d, d ij The diameter size of the heat dissipation structure is represented, i represents the order of circular rings, and is 1,2 and 3 respectively; j is the size of the inner ring/outer ring of the ith circular ring, 1 is taken at the outer ring, and 2 is taken at the inner ring; d, d mid The average of the diameter of the outer ring of the first ring and the diameter of the inner ring of the third ring is called the intermediate diameter.
Further, the outer ring heat dissipation structure and the middle heat dissipation structure are provided with heat dissipation ribs, the upper heat dissipation structure and the lower heat dissipation structure on the tray body are matched with each other, the heat dissipation ribs are two-by-two to form a hollow structure, and the size parameters of the heat dissipation ribs are as follows:
the included angle between the connecting lines of the two adjacent sides of the bottom surfaces of the two adjacent radiating ribs arranged on the single circular ring of the radiating structure and the center of the brake disc is alpha, the value range of alpha is 1.35-1.40 degrees, the bottom surface width of the radiating rib is b, and the value range of the radiating rib is 23-24 mm.
Further, let the number of cooling ribs on the ith ring be n, and define the sum of the arc length corresponding to the angle alpha on the diameter of the inner ring of the ring and the width b of the bottom surface of the cooling rib as the number of cooling ribs on the ring, then the maximum value n of the number n of cooling ribs max And a minimum value n min The calculation is as follows:
compared with the prior art, the invention has the following advantages:
according to the invention, the three-ring type heat dissipation structure is adopted as the inner structure of the brake disc body, so that on one hand, the heat resistance of the brake disc is improved, the contact area between the brake disc body and air is increased, and the heat exchange rate between the brake disc and the air is improved; on the other hand, the rigidity and the strength of the brake disc are ensured, so that the stability of the braking process is ensured.
The split type brake disc disclosed by the invention realizes the light weight of the brake disc body while ensuring the heat dissipation, strength, rigidity and other performances of the brake disc, and provides convenience for the self assembly of the brake disc and the assembly of the whole brake disc and a system main shaft, and has the advantages of simple structure, reasonable design, convenience in use and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings may be obtained according to the drawings without inventive effort to a person skilled in the art.
Fig. 1 is a schematic structural view of a lightweight split brake disc with a heat dissipation structure according to the present invention.
Fig. 2 is a schematic structural view of the inside of the lightweight split brake disc with the heat dissipation structure of the present invention.
In the figure: 1. a tray body; 1.1, an outer ring heat dissipation structure; 1.2, an intermediate heat dissipation structure; 1.3, an inboard support structure; 2. countersunk hexagon socket head cap bolts; 3. a hexagonal thick nut; 4. and (3) an opening gasket.
Detailed Description
It should be noted that, without conflict, the embodiments of the present invention and features of the embodiments may be combined with each other. The invention will be described in detail below with reference to the drawings in connection with embodiments.
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely exemplary in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present invention. As used herein, the singular is also intended to include the plural unless the context clearly indicates otherwise, and furthermore, it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.
The relative arrangement of the components and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise. Meanwhile, it should be clear that the dimensions of the respective parts shown in the drawings are not drawn in actual scale for convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any specific values should be construed as merely illustrative, and not a limitation. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further discussion thereof is necessary in subsequent figures.
In the description of the present invention, it should be understood that the azimuth or positional relationships indicated by the azimuth terms such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal", and "top, bottom", etc., are generally based on the azimuth or positional relationships shown in the drawings, merely to facilitate description of the present invention and simplify the description, and these azimuth terms do not indicate and imply that the apparatus or elements referred to must have a specific azimuth or be constructed and operated in a specific azimuth, and thus should not be construed as limiting the scope of protection of the present invention: the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be positioned in other different ways (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
In addition, the terms "first", "second", etc. are used to define the components, and are only for convenience of distinguishing the corresponding components, and the terms have no special meaning unless otherwise stated, and therefore should not be construed as limiting the scope of the present invention.
As shown in fig. 1, the invention provides a lightweight split type brake disc with a heat dissipation structure, wherein the brake disc is composed of an upper disc body 1 and a lower disc body 1 and has a split type structure; the upper tray body 1 and the lower tray body 1 are identical in structure and are mutually matched and then fixed by the countersunk head inner hexagon bolt 2 matched with the hexagonal thick nut 3, and the upper tray body 1 and the lower tray body 1 are mutually fixedly connected in a bolt mode, so that feasibility in the assembly process is ensured. The lightweight split type brake disc with the heat radiation structure is mainly used for a high-speed heavy-load brake working condition, a large amount of heat is generated in the working condition, certain vibration is caused, and an opening washer 4 for preventing loosening is further arranged at the contact position of the hexagonal thick nut 3 and the disc body for guaranteeing the effectiveness of bolt connection, so that anti-loosening treatment is carried out.
As shown in fig. 2, the disc body 1 is a three-ring heat dissipation structure, and has an outer ring heat dissipation structure 1.1, an intermediate heat dissipation structure 1.2, and an inner support structure 1.3, where a certain relationship needs to be satisfied between the heat dissipation structures:
taking the parts related in the invention as examples, the outer ring heat dissipation structure 1.1, the middle heat dissipation structure 1.2 and the inner side support structure 1.3 are respectively defined as a first ring, a second ring and a third ring from outside to inside, wherein: d, d ij The diameter size of the heat dissipation structure is represented, i represents the order of circular rings, and is 1,2 and 3 respectively; j is the size of the inner ring/outer ring of the ith circular ring, 1 is taken at the outer ring, and 2 is taken at the inner ring; e.g. d 21 The outer ring diameter of the second ring (intermediate heat dissipation structure 1.2) is shown. d, d mid Diameter d of outer ring of first circular ring (outer ring heat radiation structure 1.1) 11 Diameter d of inner ring with third ring (inner support structure 1.3) 32 Is referred to as the median diameter.
In the braking process, the brake caliper drives the brake pads to contact with the outermost area of the brake disc, so that the brake disc is formed into a cantilever structure taking a brake disc shaft hole as a fulcrum in the radial direction, and an inner side supporting structure 1.3 is designed at the position of the brake disc shaft hole to serve as a third circular ring (innermost circular ring) for ensuring the requirements of rigidity, strength and the like of the brake disc in the braking process. Inner ring diameter d of third ring (innermost ring) 32 The dimensions of the shaft and associated accessories, such as sleeves, etc., to which the brake disc is mounted are known dimensions; the diameter of the outer ring thereof meets the following conditions: d, d 31 ＝(0.66～0.67)d mid 。
In the braking process, a large amount of heat is instantaneously generated in the contact area of the brake pad and the brake disc, and the heat is conducted into the brake disc through conduction, so that the heat-conducting performance of the brake disc body needs to be improved in order to prevent the occurrence of phenomena such as thermal fatigue, cracks and the like caused by the influence of thermal stress on the brake disc. The present invention thus provides an outer ring heat sink 1.1 and an intermediate heat sink 1.2, i.e. a second ring (intermediate heat sink 1.2) and a first ring, respectively, in this regionRing (outer ring heat dissipation structure 1.1). The diameter of the inner ring of the second circular ring (the middle heat dissipation structure 1.2) meets d 22 ＝(1.17～1.18)d mid The method comprises the steps of carrying out a first treatment on the surface of the The diameter of the outer ring meets d 21 ＝(1.39～1.40)d mid . The diameter of the inner ring of the first circular ring (the outer ring heat dissipation structure 1.1) meets d 12 ＝(1.51～1.52)d mid The method comprises the steps of carrying out a first treatment on the surface of the Its outer ring diameter d 11 The maximum diameter size of the split type brake disc is limited by installation conditions in design and is a known size.
In order to improve the heat radiation capability of the brake disc in the braking process, the contact area between the brake disc body 1 and air is increased, and a certain number of heat radiation rib structures are arranged on a first circular ring (an outer ring heat radiation structure 1.1) and a second circular ring (an intermediate heat radiation structure 1.2) of the brake disc body 1. The number and the size parameters of the radiating ribs are selected as follows:
the included angle between the connecting lines of the two adjacent sides of the bottom surfaces of the two adjacent radiating ribs arranged on the single circular ring of the radiating structure and the center of the brake disc is alpha, the value range of alpha is 1.35-1.40 degrees, the bottom surface width of the radiating rib is b, and the value range of the radiating rib is 23-24 mm.
Setting the number of radiating ribs on the ith circular ring as n, and defining the sum of the arc length corresponding to the included angle alpha on the diameter of the inner ring of the circular ring and the width b of the bottom surface of the radiating ribs as the number of the radiating ribs on the circular ring, wherein the maximum value n of the number n of the radiating ribs is max And a minimum value n min The calculation is as follows:
the heat conduction efficiency in the braking process can be improved through the design of the heat dissipation ribs, and meanwhile, the contact area between the brake disc and air is increased, so that the heat convection efficiency between the brake disc body and air is improved. The combined action effect of the two parts improves the heat resistance of the lightweight split type manufacturing disc with the heat radiation structure. Meanwhile, the middle heat dissipation structure 1.2 and the outer ring heat dissipation structure 1.1 also play a role in supporting, and the rigidity of the contact area of the brake disc and the brake pad is improved. According to the invention, the adjacent circular rings in the structure of the brake disc body 1 are hollow, so that the flow of air in the brake disc is enhanced, the heat resistance of the brake disc body is improved, the mass of the brake disc body is reduced, and the purpose of light weight is achieved.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (2)
1. A lightweight split brake disc with a heat radiation structure is characterized in that,
the brake disc is composed of an upper disc body (1) and a lower disc body (1) and has a split type structure; the upper tray body and the lower tray body (1) have the same structure and are mutually matched and then are fixed by a countersunk head inner hexagon bolt (2) matched with a hexagonal thick nut (3), and an opening gasket (4) for preventing loosening is arranged at the contact position of the hexagonal thick nut (3) and the tray body;
the disk body (1) is a three-ring type heat dissipation structure, an outer ring heat dissipation structure (1.1), a middle heat dissipation structure (1.2) and an inner side support structure (1.3) are arranged on the disk body, and the heat dissipation structures meet the following relations:
d 31 ＝(0.66～0.67)d mid ；
d 22 ＝(1.17～1.18)d mid ；
d 21 ＝(1.39～1.40)d mid ；
d 12 ＝(1.51～1.52)d mid ；
defining the outer ring heat dissipation structure (1.1), the middle heat dissipation structure (1.2) and the inner side support structure (1.3) as a first ring, a second ring and a third ring from outside to inside respectively, wherein: d, d ij The diameter size of the heat dissipation structure is represented, i represents the order of circular rings, and is 1,2 and 3 respectively; j is the size of the inner ring/outer ring of the ith circular ring, 1 is taken at the outer ring, and 2 is taken at the inner ring; d, d mid The average value of the diameter of the outer ring of the first circular ring and the diameter of the inner ring of the third circular ring is called as the middle diameter;
the outer ring heat radiation structure (1.1) and the middle heat radiation structure (1.2) are respectively provided with heat radiation ribs, the upper heat radiation structure and the lower heat radiation structure on the disc body (1) are matched with each other, the heat radiation ribs are two by two to form a hollow structure, and the size parameters of the heat radiation ribs are as follows:
the included angle between the connecting lines of the two adjacent sides of the bottom surfaces of the two adjacent radiating ribs arranged on the single circular ring of the radiating structure and the center of the brake disc is alpha, the value range of alpha is 1.35-1.40 degrees, the bottom surface width of the radiating rib is b, and the value range of the radiating rib is 23-24 mm.
2. The lightweight split brake disk with heat dissipation structure as claimed in claim 1, wherein the number of heat dissipation ribs on the ith ring is set as n, and the sum of the arc length corresponding to the diameter of the inner ring of the ring and the width b of the bottom surface of the heat dissipation ribs at the given angle α is the number of heat dissipation ribs on the ring, then the maximum value n of the number n of heat dissipation ribs max And a minimum value n min The calculation is as follows:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811592413.8A CN109488709B (en) | 2018-12-25 | 2018-12-25 | Lightweight split type brake disc with heat radiation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811592413.8A CN109488709B (en) | 2018-12-25 | 2018-12-25 | Lightweight split type brake disc with heat radiation structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109488709A CN109488709A (en) | 2019-03-19 |
| CN109488709B true CN109488709B (en) | 2024-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811592413.8A Active CN109488709B (en) | 2018-12-25 | 2018-12-25 | Lightweight split type brake disc with heat radiation structure |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10318304A (en) * | 1997-05-15 | 1998-12-04 | Kurimoto Ltd | Brake disc excellent in heat resistant stress |
| CN204664236U (en) * | 2015-04-02 | 2015-09-23 | 南京北交轨道交通新材料科技有限公司 | A kind of anti-reflex action structural rail axle for vehicle is brake disk mounted |
| CN205118081U (en) * | 2015-10-12 | 2016-03-30 | 汶上海纬机车配件有限公司 | High -speed EMUs axle dress brake disc |
| CN209430647U (en) * | 2018-12-25 | 2019-09-24 | 大连交通大学 | A kind of seperated brake disc conducive to heat dissipation |
-
2018
- 2018-12-25 CN CN201811592413.8A patent/CN109488709B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10318304A (en) * | 1997-05-15 | 1998-12-04 | Kurimoto Ltd | Brake disc excellent in heat resistant stress |
| CN204664236U (en) * | 2015-04-02 | 2015-09-23 | 南京北交轨道交通新材料科技有限公司 | A kind of anti-reflex action structural rail axle for vehicle is brake disk mounted |
| CN205118081U (en) * | 2015-10-12 | 2016-03-30 | 汶上海纬机车配件有限公司 | High -speed EMUs axle dress brake disc |
| CN209430647U (en) * | 2018-12-25 | 2019-09-24 | 大连交通大学 | A kind of seperated brake disc conducive to heat dissipation |
Non-Patent Citations (1)
| Title |
|---|
| 列车制动盘通风散热的数值仿真;潘利科;韩建民;李志强;杨智勇;李卫京;;北京交通大学学报(第01期);全文 * |
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| CN109488709A (en) | 2019-03-19 |
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