CN116906476A - Wheel-mounted brake disc, brake device and vehicle - Google Patents

Wheel-mounted brake disc, brake device and vehicle Download PDF

Info

Publication number
CN116906476A
CN116906476A CN202311037210.3A CN202311037210A CN116906476A CN 116906476 A CN116906476 A CN 116906476A CN 202311037210 A CN202311037210 A CN 202311037210A CN 116906476 A CN116906476 A CN 116906476A
Authority
CN
China
Prior art keywords
wheel
brake disc
brake
disc body
contact
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202311037210.3A
Other languages
Chinese (zh)
Inventor
宋跃超
杨广楠
祝家祺
韩超
焦标强
吕宝佳
齐冀
曹建行
张臣
谭善超
张波
杨伟君
曹宏发
康晶辉
潘全章
薛江
靳明旭
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Academy of Railway Sciences Corp Ltd CARS
Locomotive and Car Research Institute of CARS
Beijing Zongheng Electromechanical Technology Co Ltd
Tieke Aspect Tianjin Technology Development Co Ltd
Original Assignee
China Academy of Railway Sciences Corp Ltd CARS
Locomotive and Car Research Institute of CARS
Beijing Zongheng Electromechanical Technology Co Ltd
Tieke Aspect Tianjin Technology Development Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by China Academy of Railway Sciences Corp Ltd CARS, Locomotive and Car Research Institute of CARS, Beijing Zongheng Electromechanical Technology Co Ltd, Tieke Aspect Tianjin Technology Development Co Ltd filed Critical China Academy of Railway Sciences Corp Ltd CARS
Priority to CN202311037210.3A priority Critical patent/CN116906476A/en
Publication of CN116906476A publication Critical patent/CN116906476A/en
Pending legal-status Critical Current

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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
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H5/00—Applications or arrangements of brakes with substantially radial braking surfaces pressed together in axial direction, e.g. disc brakes
    • 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
    • F16D65/04—Bands, shoes or pads; Pivots or supporting members therefor
    • F16D65/092—Bands, shoes or pads; Pivots or supporting members therefor for axially-engaging brakes, e.g. disc brakes
    • F16D65/095—Pivots or supporting members therefor
    • 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
    • F16D65/122—Discs; Drums for disc brakes adapted for mounting of friction pads
    • 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
    • F16D65/124—Discs; Drums for disc brakes comprising an annular disc secured to a hub member; Discs characterised by means for mounting adapted for mounting on the wheel of a railway vehicle
    • 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
    • F16D65/127—Discs; Drums for disc brakes characterised by properties of the disc surface; Discs lined with friction material
    • 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
    • F16D65/78—Features relating to cooling
    • F16D65/84—Features relating to cooling for disc brakes
    • F16D65/847—Features relating to cooling for disc brakes with open cooling system, e.g. cooled by air
    • 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
    • F16D2065/1324—Structure carrying friction elements
    • 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
    • F16D2065/1328—Structure internal cavities, e.g. cooling channels
    • 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
    • F16D2065/1336—Structure integral part of vehicle wheel
    • 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
    • F16D2065/138—Connection to wheel
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Abstract

The invention relates to a wheel-mounted brake disc, a brake device and a vehicle, wherein the wheel-mounted brake disc comprises: at least two annular brake disc bodies which are respectively arranged at two sides of the wheel along the circumferential direction of the wheel; the brake disc body is provided with at least an annular contact surface and an annular brake surface opposite to the contact surface, the area of the brake surface is larger than that of the contact surface, the brake surface is used for being attached to the side surface of the wheel in the assembled state of the brake disc body and the wheel, and the contact surface is used for being contacted with the friction piece to generate friction force when the vehicle brakes so as to brake the wheel. The invention solves the technical problem that the wheel-mounted brake disc is easy to deform in the use process.

Description

Wheel-mounted brake disc, brake device and vehicle
Technical Field
The invention relates to the technical field of rail transit braking, in particular to a wheel-mounted brake disc, a brake device and a vehicle, which are applicable to a high-speed railway motor train unit and a city rail transit vehicle braking system.
Background
In the conventional vehicle, about half of the vehicles (high-speed train, locomotive, urban rail vehicle, etc.) are braked by using a wheel-mounted brake disc, and as shown in fig. 1 and 2, the conventional wheel-mounted brake disc comprises at least two annular disc bodies 20, a plurality of through holes 1001 are formed in the wheel 10 at intervals along the circumferential direction thereof, bolts 30 are respectively arranged in the plurality of through holes 1001, both ends of the bolts 30 are respectively positioned at both sides of the through holes 1001, the two disc bodies 20 are respectively arranged at both sides of the wheel 10, and bolt sleeves 40 and nuts 50 are respectively arranged at both ends of the bolts 30, so that the two disc bodies 20 are respectively pressed and fixed with the wheel 10, and braking friction byproducts are formed at both sides of the wheel 10. When the vehicle is running, the friction member clamps the disc 20, and the generated friction force is used for decelerating or braking the vehicle, as shown in fig. 1 and 3, the end face of the disc 20, which is close to the wheel 10, is a heat radiating surface 2001, the end face, which is far away from the wheel 10, is a braking surface 2002, in order to ensure good heat radiating and braking capabilities, a heat radiating structure (such as a plurality of grooves or strip-shaped protrusions) is generally arranged on the heat radiating surface 2001, and the area of the heat radiating surface 2001 is smaller than that of the braking surface 2002. Since the braking device is an energy conversion medium for stopping or regulating the speed of the vehicle, it plays a critical role in safely stopping the vehicle.
Because the wheel-mounted brake disc absorbs friction heat during operation (i.e., during running of the vehicle) and forms a certain temperature gradient in the radial direction of the wheel 10, thermal stresses of different intensities are generated in the radial direction of the wheel 10, so that the disc body 20 deforms as shown in fig. 3, namely, the area, close to the annular outer edge, of the disc body 20 deviates away from the wheel 10, and the area, close to the annular inner edge, of the disc body 20 is tightly attached to the wheel 10. The deformation of the tray 20 brings about the following hidden troubles:
1. the axial stress of the bolt 30 is increased, so that the fatigue and damage of the bolt 30 are easily caused in the use process, the braking capability of a vehicle is influenced, and certain potential safety hazards exist;
2. because the tray 20 is deformed, the detached tray 20 cannot be reused after the wheel 10 is worn out to a limited extent, the proportion of the tray 20 reused is reduced, and the equipment cost is increased.
Aiming at the problem that the wheel-mounted brake disc is easy to deform in the use process in the related technology, no effective solution is provided at present.
Accordingly, the present inventors have developed a wheel-mounted brake disc, brake device and vehicle to overcome the drawbacks of the prior art by years of experience and practice in the relevant industry.
Disclosure of Invention
The invention aims to provide a wheel-mounted brake disc, a brake device and a vehicle, which effectively reduce the deformation of a disc body of the brake disc in the use process, prolong the service life of the brake disc and the repeated utilization rate of the disc body, and ensure the braking safety of the vehicle.
The object of the invention can be achieved by the following scheme:
the present invention provides a wheel-mounted brake disc for braking a wheel 1, the wheel-mounted brake disc comprising:
at least two annular brake disc bodies, wherein the two brake disc bodies are respectively arranged at two sides of the wheel along the circumferential direction of the wheel;
the brake disc body is provided with at least an annular contact surface and an annular brake surface opposite to the contact surface, the area of the brake surface is larger than that of the contact surface, the brake surface is used for being attached to the side surface of the wheel in the assembly state of the brake disc body and the wheel, and the contact surface is used for being contacted with a friction piece to generate friction force when the vehicle brakes so as to brake the wheel.
In a preferred embodiment of the present invention, the brake disc body includes a contact portion, a braking portion, and a heat dissipation portion, wherein the contact portion and the braking portion are both in an annular plate structure, the heat dissipation portion is connected between the contact portion and the braking portion, the contact portion is formed on a wall surface of a side of the contact portion, which is far from the heat dissipation portion, and the braking portion is formed on a wall surface of a side of the braking portion, which is far from the heat dissipation portion.
In a preferred embodiment of the present invention, the heat dissipation portion includes a plurality of ribs, the plurality of ribs are distributed at intervals along a circumferential direction of the brake disc body, and a heat dissipation channel is formed between two adjacent ribs.
In a preferred embodiment of the present invention, the contact portion, the braking portion and the heat dissipation portion are integrally formed.
In a preferred embodiment of the present invention, the thickness of the contact portion in the axial direction of the brake disc body is smaller than the thickness of the brake portion.
In a preferred embodiment of the present invention, the brake disc body is provided with a plurality of stepped holes, and the wheel is provided with a plurality of through holes;
the brake disc is characterized in that connecting pieces are respectively arranged in the through holes, two ends of each connecting piece respectively extend into the stepped holes on the brake disc body on two sides of the wheel, a first locking piece and a second locking piece are respectively arranged at two ends of each connecting piece, and the first locking piece and the second locking piece respectively compress the stepped positions in the stepped holes on two sides of the wheel.
In a preferred embodiment of the present invention, a plurality of the stepped holes are spaced apart along a circumferential direction of the brake disc body, a plurality of the through holes are spaced apart along the circumferential direction of the wheel, and the plurality of the stepped holes are respectively located opposite to the corresponding through holes in an axial direction of the wheel.
In a preferred embodiment of the present invention, the connecting member is a bolt, and the first locking member and the second locking member are a bolt sleeve and a nut respectively disposed at two ends of the bolt.
In a preferred embodiment of the present invention, the cross section of the brake disc body is trapezoidal or tapered.
The present invention provides a brake device including:
the wheel-mounted brake disc is arranged on a wheel;
and the friction piece can be contacted with the wheel-mounted brake disc and generate friction force so as to brake the wheel.
In a preferred embodiment of the present invention, the friction member is at least two friction plates, the two friction plates are respectively disposed at two sides of the wheel-mounted brake disc, and the two friction plates are controlled to be respectively pressed against the wheel-mounted brake disc and respectively contact with the corresponding brake disc body to generate friction force.
The invention provides a vehicle, which is provided with the wheel-mounted brake disc, wherein the wheel-mounted brake disc is arranged on a wheel so as to brake the wheel.
From the above, the wheel-mounted brake disc, the brake device and the vehicle of the invention have the characteristics and advantages that: the invention can effectively reduce the deformation of the brake disc body in the use process, prolong the service life and the recycling rate of the brake disc mounted on the wheel and ensure the braking safety of the vehicle.
Drawings
The following drawings are only for purposes of illustration and explanation of the present invention and are not intended to limit the scope of the invention.
Wherein:
fig. 1: is a partial cross-sectional view of a wheel mounted brake disc of the prior art.
Fig. 2: is a front view of a wheel mounted brake disc in the prior art.
Fig. 3: is a structural schematic diagram of the wheel-mounted brake disc after deformation in the prior art.
Fig. 4: one of the partial sectional views of the wheel mounted brake disc mounting and wheel of the present invention.
Fig. 5: and the second is a partial sectional view of the wheel-mounted brake disc mounting and the wheel.
Fig. 6: a perspective view of the wheel mounted brake disc of the present invention.
Fig. 7: is one of the partial cross-sectional views of the wheel mounted brake disc of the present invention.
Fig. 8: and is a second partial cross-sectional view of the wheel mounted brake disc of the present invention.
The reference numerals in the background art are:
10. a wheel; 1001. A through hole;
20. a tray body; 2001. A heat radiating surface;
2002. a braking surface; 30. A bolt;
40. a bolt sleeve; 50. And (3) a nut.
The reference numerals in the invention are:
1. a wheel; 101. A through hole;
2. a brake disc body; 201. A contact surface;
202. a braking surface; 203. A stepped hole;
204. a contact portion; 205. A braking section;
206. a heat dissipation part; 2061. Convex ribs;
2062. a heat dissipation channel; 3. A connecting piece;
4. a first locking member; 5. And the second locking piece.
Detailed Description
For a clearer understanding of technical features, objects, and effects of the present invention, a specific embodiment of the present invention will be described with reference to the accompanying drawings.
Embodiment one
As shown in fig. 4 to 8, the present invention provides a wheel-mounted brake disc for braking a wheel 1. The wheel-mounted brake disc comprises at least two annular brake disc bodies 2, wherein the two brake disc bodies 2 are respectively arranged on two sides of the wheel 1 along the circumferential direction of the wheel 1; the brake disc body 2 at least comprises a contact surface 201 and a brake surface 202 opposite to the contact surface 201, the contact surface 201 and the brake surface 202 are annular, the area of the brake surface 202 is larger than that of the contact surface 201, when the brake disc body 2 is assembled with the wheel 1, the brake surface 202 is used for being attached to the side surface of the wheel 1, and when the contact surface 201 is used for braking a vehicle, friction force is generated by being contacted with a friction piece so as to brake the wheel 1.
In the invention, the two sides of the wheel 1 are respectively provided with the circular brake disc body 2 along the circumferential direction of the wheel 1, the brake disc body 2 is at least provided with the contact surface 201 and the brake surface 202, when the brake disc body 2 is assembled with the wheel 1, the brake surface 202 can be attached to the side surface of the wheel 1, the contact surface 201 is contacted with the friction piece to generate friction force when the vehicle brakes, so that the wheel 1 is braked, the deformation resistance of the brake surface 202 is larger than that of the contact surface 201 because the area of the brake surface 202 of the brake disc body 2 is larger than that of the contact surface 201, and meanwhile, the contact surface 201 can provide better supporting function for the brake surface 202 when the friction piece compresses the brake disc body 2 to carry out friction braking, so that the deformation possibility of the brake disc body 2 is further reduced, the invention can effectively reduce the deformation of the brake disc body 2 in the use process, prolong the service life and the repeated utilization rate of the wheel-mounted brake disc, and ensure the braking safety of the vehicle.
Further, the friction piece is at least two friction plates, the two friction plates are respectively arranged at two sides of the wheel-mounted brake disc, and the two friction plates are controlled to be respectively pressed towards the wheel-mounted brake disc and respectively contact with the braking surface 202 of the corresponding brake disc body 2 to generate friction force so as to achieve the purpose of braking the vehicle.
In an alternative embodiment of the present invention, as shown in fig. 5 to 8, the brake disc 2 includes a contact portion 204, a braking portion 205, and a heat dissipation portion 206, where the contact portion 204 and the braking portion 205 are each in a circular plate structure, the heat dissipation portion 206 is connected between the contact portion 204 and the braking portion 205, and the heat dissipation portion 206 is in a circular ring structure, a wall surface of the contact portion 204 on a side far from the heat dissipation portion 206 forms a contact surface 201, and a wall surface of the braking portion 205 on a side far from the heat dissipation portion 206 forms a braking surface 202.
Specifically, as shown in fig. 6 to 8, the heat dissipation portion 206 includes a plurality of ribs 2061, and the plurality of ribs 2061 are distributed at intervals along the circumferential direction of the brake disc body 2, so that a heat dissipation channel 2062 is formed between any two adjacent ribs 2061, thereby guaranteeing the overall strength and the deformation resistance, and simultaneously rapidly dissipating heat generated in the braking process, and guaranteeing the good heat dissipation capability of the brake disc.
Further, the contact portion 204, the braking portion 205, and the heat dissipation portion 206 are integrally molded, and the cross section of the brake disc body 2 is trapezoidal or tapered. In the embodiment of the invention, the integral deformation resistance of the brake disc body 2 can be enhanced through an integral molding structure; in addition, the heat dissipation portion 206 is disposed between the contact portion 204 and the brake portion 205, so that the deformation resistance of the heat dissipation portion 206 can be enhanced, the defect that the heat dissipation portion 206 is easy to deform can be overcome, and the deformation resistance of the whole brake disc body 2 can be enhanced. Because contact 204, braking portion 205 and heat dissipation portion 206 integrative cast molding, under the condition that the material of preparation optional with traditional wheel dress brake disc's material the lower problem of yield in the wheel dress brake disc casting process can be solved, the deformation that still can guarantee less after long-term use after cast molding, the deformation that takes place can correct through the machining to reach wheel dress brake disc repeatedly usable's purpose.
In an alternative embodiment of the present invention, as shown in fig. 5, the thickness of the contact portion 204 is smaller than the thickness of the braking portion 205 in the axial direction of the brake disc body 2. Since the braking portion 205 performs friction braking with the friction material, the thickness of the braking portion 205 needs to be set larger than that of the contact portion 204, so that a long-term and stable braking ability of the brake disc 2 is ensured. In the actual production process, the partial area of the original brake disc body 2 on one side of the brake part 205 can be moved to the other side of the brake disc body 2 opposite to the brake part 205 to form the contact part 204, so that the structure of the contact part 204, the brake part 205 and the heat dissipation part 206 can be formed without increasing the weight and the cost of the brake disc body 2.
Further, as shown in fig. 5, the ratio of the thickness H1 of the braking portion 205 to the thickness H2 of the contact portion 204 is h1/h2= (2.3 to 1.8). In the radial direction of the brake disk body 2, the relationship between the width L2 of the contact portion 204 and the width L1 of the brake portion 205 is: l2= (1.1 to 1.3) ×l1; the overall thickness H of the brake disc body 2 and the thickness H1 of the brake portion 205 satisfy the relationship: h= (3.0 to 3.5) ×h1. By limiting the above dimensions, on the basis of meeting the requirement of mounting the wheel 1, reasonable layout of the heat dissipation part 206 can be realized, and good heat dissipation and ventilation effects are ensured; the ratio range of the thickness H1 of the brake part 205 to the thickness H2 of the contact part 204 is set, and the width L2 of the contact part 204 is limited to be larger than the width L1 of the brake part 205, so that the overall parameters of the brake disc body 2 at the side close to the wheel 1 are more coordinated and uniform, the deformation is reduced, the deformation of the brake disc body 2 caused by thermal expansion is improved, and the use safety and reliability of the brake disc body 2 are improved as a whole.
Preferably, the ratio of the thickness H1 of the braking portion 205 to the thickness H2 of the contact portion 204 is H1/h2=2:1; the relationship between the width L2 of the contact portion 204 and the width L1 of the stopper portion 205 is: l2=1.2×l1; the overall thickness H of the brake disc body 2 and the thickness H1 of the brake portion 205 satisfy the relationship: h=3.5×h1.
In an alternative embodiment of the present invention, as shown in fig. 4 to 8, a plurality of stepped holes 203 are formed in the brake disc 2, and a plurality of through holes 101 are formed in the wheel 1; the connecting pieces 3 are respectively arranged in the through holes 101, two ends of each connecting piece 3 respectively extend into the stepped holes 203 on the brake disc bodies 2 positioned on two sides of the wheel 1, one end of each connecting piece 3 is provided with a first locking piece 4, the other end of each connecting piece 3 is provided with a second locking piece 5, the first locking pieces 4 and the second locking pieces 5 respectively compress the stepped positions in the stepped holes 203 positioned on two sides of the wheel 1, and the brake disc bodies 2 can be stably assembled on the wheel 1. Wherein the connecting member 3 may be, but is not limited to, a bolt, the first locking member 4 may be, but is not limited to, a bolt sleeve fixed to one end of the bolt, and the second locking member 5 may be, but is not limited to, a nut screwed to the other end of the bolt.
Further, as shown in fig. 6 to 8, the plurality of stepped holes 203 are uniformly distributed at intervals along the circumferential direction of the brake disc 2, the plurality of through holes 101 are uniformly distributed at intervals along the circumferential direction of the wheel 1, and the plurality of stepped holes 203 are respectively opposite to the corresponding through holes 101 in the axial direction of the wheel 1, so that the connecting member 3 smoothly passes through the stepped holes 203 on the brake disc 2 and the through holes 101 on the wheel 1.
The wheel-mounted brake disc has the characteristics and advantages that:
1. the wheel-mounted brake disc is provided with the brake surface 202 and the contact surface 201, the deformation resistance of the brake surface 202 is larger than that of the contact surface 201, meanwhile, when the friction piece presses the brake disc body 2 to carry out friction braking, the contact surface 201 can provide better supporting effect for the brake surface 202, and the possibility of deformation of the brake disc body 2 is further reduced, so that the deformation of the brake disc body 2 in the using process can be effectively reduced, the service life and the recycling rate of the wheel-mounted brake disc are prolonged, and the braking safety of a vehicle is ensured.
2. The wheel-mounted brake disc can effectively reduce the deformation of the brake disc body 2 in the use process, so that the additional bolt axial force generated by the deformation of the brake disc body 2 (namely, the axial force is increased due to the deformation of the connecting piece 3) can be greatly reduced, and the service life of the bolt is prolonged.
3. The wheel-mounted brake disc can enhance the integral deformation resistance of the brake disc body 2 through an integral forming structure; in addition, the heat dissipation portion 206 is disposed between the contact portion 204 and the brake portion 205, so that the deformation resistance of the heat dissipation portion 206 can be enhanced, the defect that the heat dissipation portion 206 is easy to deform can be overcome, and the deformation resistance of the whole brake disc body 2 can be enhanced.
4. The wheel-mounted brake disc can form the structures of the contact part 204, the braking part 205 and the heat dissipation part 206 without increasing the weight and the cost of the brake disc body 2.
Second embodiment
The invention provides a braking device which comprises the wheel-mounted brake disc and a friction piece, wherein the wheel-mounted brake disc is arranged on a wheel 1, and the friction piece can be contacted with the wheel-mounted brake disc and generate friction force so as to brake the wheel 1.
Specifically, the friction piece is at least two friction plates, and the two friction plates are respectively arranged at two sides of the wheel-mounted brake disc, and are controlled to be respectively pressed against the wheel-mounted brake disc and respectively contacted with the corresponding brake disc body 2 to generate friction force.
The braking device of the present invention has the same advantages as the wheel mounted brake disc described above and will not be described in detail herein.
Embodiment III
The invention provides a vehicle provided with the wheel-mounted brake disc, wherein the wheel-mounted brake disc is arranged on a wheel 1 to brake the wheel 1.
The foregoing is illustrative of the present invention and is not to be construed as limiting the scope of the invention. Any equivalent changes and modifications can be made by those skilled in the art without departing from the spirit and principles of this invention, and are intended to be within the scope of this invention.

Claims (12)

1. A wheel-mounted brake disc for braking a wheel 1, characterized in that it comprises:
at least two annular brake disc bodies, wherein the two brake disc bodies are respectively arranged at two sides of the wheel along the circumferential direction of the wheel;
the brake disc body is provided with at least an annular contact surface and an annular brake surface opposite to the contact surface, the area of the brake surface is larger than that of the contact surface, the brake surface is used for being attached to the side surface of the wheel in the assembly state of the brake disc body and the wheel, and the contact surface is used for being contacted with a friction piece to generate friction force when the vehicle brakes so as to brake the wheel.
2. The wheel-mounted brake disc according to claim 1, wherein the brake disc body comprises a contact portion, a brake portion and a heat dissipation portion, the contact portion and the brake portion are both in an annular plate-shaped structure, the heat dissipation portion is connected between the contact portion and the brake portion, the contact surface is formed on a wall surface of the contact portion, which is far from the heat dissipation portion, and the brake surface is formed on a wall surface of the brake portion, which is far from the heat dissipation portion.
3. The wheel mounted brake disc of claim 2 wherein the heat dissipating portion comprises a plurality of ribs spaced circumferentially about the brake disc body, and wherein heat dissipating channels are formed between adjacent ones of the ribs.
4. A wheel mounted brake disc as claimed in claim 2 or claim 3 wherein the contact portion, the braking portion and the heat sink portion are integrally formed.
5. A wheel mounted brake disc as claimed in claim 2 wherein the thickness of the contact portion is less than the thickness of the brake portion in the axial direction of the brake disc body.
6. The wheel-mounted brake disc according to claim 1, wherein a plurality of stepped holes are formed in the brake disc body, and a plurality of through holes are formed in the wheel;
the brake disc is characterized in that connecting pieces are respectively arranged in the through holes, two ends of each connecting piece respectively extend into the stepped holes on the brake disc body on two sides of the wheel, a first locking piece and a second locking piece are respectively arranged at two ends of each connecting piece, and the first locking piece and the second locking piece respectively compress the stepped positions in the stepped holes on two sides of the wheel.
7. The wheel-mounted brake disc according to claim 6, wherein a plurality of the stepped holes are spaced apart in the circumferential direction of the brake disc body, a plurality of the through holes are spaced apart in the circumferential direction of the wheel, and a plurality of the stepped holes are located opposite to the corresponding through holes in the axial direction of the wheel, respectively.
8. A wheel mounted brake disc according to claim 6 or claim 7 wherein the connector is a bolt and the first and second locking members are a bolt sleeve and a nut respectively disposed at opposite ends of the bolt.
9. A wheel mounted brake disc as claimed in claim 1 wherein the brake disc body is trapezoidal or conical in cross-section.
10. A brake apparatus, characterized in that the brake apparatus comprises:
a wheel mounted brake disc according to any one of claims 1 to 9, said wheel mounted brake disc being provided on a wheel;
and the friction piece can be contacted with the wheel-mounted brake disc and generate friction force so as to brake the wheel.
11. The brake apparatus of claim 10, wherein the friction member is at least two friction plates, the two friction plates are respectively disposed on both sides of the wheel-mounted brake disc, and the two friction plates are controlled to be respectively pressed against the wheel-mounted brake disc and respectively contact with the corresponding brake disc to generate friction force.
12. A vehicle having a wheel mounted brake disc as claimed in any one of claims 1 to 9 arranged on a wheel to brake the wheel.
CN202311037210.3A 2023-08-17 2023-08-17 Wheel-mounted brake disc, brake device and vehicle Pending CN116906476A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202311037210.3A CN116906476A (en) 2023-08-17 2023-08-17 Wheel-mounted brake disc, brake device and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202311037210.3A CN116906476A (en) 2023-08-17 2023-08-17 Wheel-mounted brake disc, brake device and vehicle

Publications (1)

Publication Number Publication Date
CN116906476A true CN116906476A (en) 2023-10-20

Family

ID=88351178

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202311037210.3A Pending CN116906476A (en) 2023-08-17 2023-08-17 Wheel-mounted brake disc, brake device and vehicle

Country Status (1)

Country Link
CN (1) CN116906476A (en)

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