CN113236696B - High-utilization-rate compression joint type brake pad for high-speed railway vehicle - Google Patents
High-utilization-rate compression joint type brake pad for high-speed railway vehicle Download PDFInfo
- Publication number
- CN113236696B CN113236696B CN202110477219.0A CN202110477219A CN113236696B CN 113236696 B CN113236696 B CN 113236696B CN 202110477219 A CN202110477219 A CN 202110477219A CN 113236696 B CN113236696 B CN 113236696B
- Authority
- CN
- China
- Prior art keywords
- friction block
- block
- metal
- friction
- pressing plate
- 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.)
- Active
Links
- 230000006835 compression Effects 0.000 title abstract description 17
- 238000007906 compression Methods 0.000 title abstract description 17
- 239000002184 metal Substances 0.000 claims abstract description 110
- 238000003825 pressing Methods 0.000 claims abstract description 85
- 239000000919 ceramic Substances 0.000 claims abstract description 24
- 239000002131 composite material Substances 0.000 claims abstract description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 23
- 229910052799 carbon Inorganic materials 0.000 claims description 23
- 229910000831 Steel Inorganic materials 0.000 claims description 16
- 239000010959 steel Substances 0.000 claims description 16
- 238000002788 crimping Methods 0.000 claims description 5
- 241000357293 Leptobrama muelleri Species 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 12
- 230000006872 improvement Effects 0.000 description 9
- 230000000694 effects Effects 0.000 description 6
- 230000008646 thermal stress Effects 0.000 description 6
- 229910010293 ceramic material Inorganic materials 0.000 description 5
- 238000010008 shearing Methods 0.000 description 5
- 238000005219 brazing Methods 0.000 description 4
- 230000007547 defect Effects 0.000 description 4
- 238000005245 sintering Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 238000004663 powder metallurgy Methods 0.000 description 3
- 238000005493 welding type Methods 0.000 description 3
- 230000032683 aging Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000001066 destructive effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002783 friction material Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
- F16D69/0408—Attachment of linings specially adapted for plane linings
-
- 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
- F16D65/0031—Devices for retaining friction material debris, e.g. dust collectors or filters
-
- 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
- F16D65/0037—Devices for conditioning friction surfaces, e.g. cleaning or abrasive 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
- F16D65/78—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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/02—Composition of linings ; Methods of manufacturing
- F16D69/023—Composite materials containing carbon and carbon fibres or fibres made of carbonizable 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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D2069/004—Profiled friction surfaces, e.g. grooves, dimples
-
- 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
- F16D69/00—Friction linings; Attachment thereof; Selection of coacting friction substances or surfaces
- F16D69/04—Attachment of linings
- F16D2069/0425—Attachment methods or devices
- F16D2069/0433—Connecting elements not integral with the braking member, e.g. bolts, rivets
-
- 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
- F16D2200/0034—Materials; Production methods therefor non-metallic
- F16D2200/0039—Ceramics
- F16D2200/0047—Ceramic composite, e.g. C/C composite infiltrated with Si or B, or ceramic matrix infiltrated with metal
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Materials Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a high-utilization-rate compression joint type brake pad for a high-speed rail vehicle, which comprises a friction block, a metal pressing plate, a metal tray and a steel back, wherein friction block ear plates are arranged on two sides of the friction block, the friction block ear plates are clamped between the metal pressing plate and the metal tray and locked by fastening components, a shear-resistant convex block and a shear-resistant groove which are matched with each other are arranged between the friction block and the metal tray, the metal tray is connected with the steel back, and the friction block is made of a carbon-ceramic composite material. The invention realizes the compression joint type connection of the friction block and the metal tray through the metal pressing plate, cancels the existing riveting/bolt connection mode, and the friction block ear plate used as the compression joint part is positioned at the periphery of the friction block, thereby improving the utilization rate of the friction block, prolonging the service life of the brake pad, saving the material cost.
Description
Technical Field
The invention relates to the technical field of vehicle braking devices, in particular to a compression joint type high-speed railway vehicle brake pad with high utilization rate.
Background
When the high-speed train is emergently braked, the brake pad and the brake disc are required to be attached and rubbed, and the huge kinetic energy of the train is consumed in a short time to realize the braking of the train. During braking, the kinetic energy of the train is converted into heat energy to cause the temperature of a brake disc and a brake pad to rise rapidly, and simultaneously, huge thermal stress is generated, so that stable friction coefficient, high heat resistance, high wear resistance, enough mechanical strength and high environmental friendliness (environment-friendly materials and low noise) are required for the performance of the brake pad and a braking device. Meanwhile, the fit of the friction surface needs to be balanced and the fit area is maximized, so that the friction force is increased, the friction material is ensured to be uniformly worn and generate heat uniformly, the problems of hot cracks, local high temperature and the like are avoided, and the service life and the brake effect of the brake pad are ensured.
At present, a floatable powder metallurgy brake pad and a floatable brake device are provided in the market for braking trains at the speed of less than 350 km/h. However, for train braking at 350 km/h or even above 400 km/h, the powder metallurgy brake pad and the braking device can not meet the requirements of stable friction coefficient, high heat resistance, high wear resistance and the like required in the braking process. The technical development direction of solving the problems by using brake discs and brake pads made of carbon-ceramic materials for high-speed motor train units is provided. In the prior art, the carbon ceramic material is a non-metal material, the supporting plate is a metal material, and the carbon ceramic material and the supporting plate are generally connected by rivets and also connected by brazing.
For example, a carbon ceramic brake friction block proposed by patent CN103511525A rivets a carbon ceramic friction body and a steel back together by means of riveting, that is: and designing a through hole in the carbon ceramic friction body, and then riveting the carbon ceramic friction body and the steel back together through a rivet penetrating through the through hole to form the carbon ceramic brake friction block. However, the above structural design has some disadvantages: 1. the wall of the carbon ceramic hole is easily crushed in the forced upsetting process of the rivet; 2. at present, a carbon ceramic material which is wider in application and better in comprehensive performance is generally formed by needling multiple layers of carbon fibers, the shearing strength in the direction parallel to a friction surface is weaker, the interlaminar shearing resistant area is small by adopting a rivet connection mode, and the friction shearing force capable of being borne is limited; 3. in the braking process, the multiple rivets on the friction body are difficult to realize cooperative shearing resistance, and a certain rivet is easy to lose effectiveness due to concentrated stress; 4. the rivet upsetting process enables the rivet to be tightly matched with the hole wall of the carbon ceramic without mismatch buffer gaps; 5. in the braking process, the temperature of the end part of the rivet is very high due to the convection heat transfer of air, so that the problem of thermal mismatch between the rivet and the carbon ceramic friction block is more prominent; 6. the non-destructive replacement of the carbon ceramic friction block cannot be realized in a riveting mode; 7. the carbon ceramic friction body needs to be provided with a plurality of through holes, so that the friction area of the carbon ceramic friction block is reduced, and the utilization rate of the friction block is reduced.
For example, patent CN112539233A proposes a method of joining the surface to be bonded of a spare carbon-ceramic friction body and the surface to be bonded of a spare steel backing together, performing brazing and pressure sintering, and then performing aging treatment to obtain a product. The method continues to use a sintering method of the powder metallurgy brake pad, avoids the defect of opening holes on the surface of the carbon-ceramic friction block, but has the following defects: 1. the preparation of the product needs the processes of high temperature, pressurization, brazing sintering, aging cooling and the like, the process is complex, the energy consumption is high, and the defects of nonuniform local brazing sintering, thermal deformation of friction bodies and the like are easy to occur under harsh production process conditions; 2. because the carbon-ceramic friction body and the steel backing material have great difference, the problem of thermal mismatch caused by different thermal expansion coefficients is prominent in the braking process, great thermal stress can be generated inside the brake pad, and particularly after multiple times of braking, the brazed parts of the carbon-ceramic friction body and the steel backing material have the risk of cracking and even separation; 3. the product can only select specific materials as the supporting plate and can not realize the reutilization of the supporting plate, and the use cost is higher.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a compression joint type brake pad for a high-speed railway vehicle, which solves the problem of thermal mismatch between a carbon ceramic material and a connecting metal and realizes the maximum utilization rate of a carbon ceramic friction block.
In order to solve the technical problem, the invention adopts the following technical scheme:
the utility model provides a high-speed rail vehicle of crimping formula of utilization brake lining, includes clutch blocks, metal pressing plate, metal tray and steel backing, the both sides of clutch blocks are equipped with the clutch blocks otic placode, the clutch blocks otic placode presss from both sides to be established between metal pressing plate and metal tray and the three passes through fastening component locking, be equipped with mutually supporting between clutch blocks and the metal tray lug and shear the recess that shears, the metal tray is connected with the steel backing, the lug that shears and the recess that shears are square, the clutch blocks is carbon pottery combined material.
As a further improvement of the technical scheme, the metal pressing plate comprises a pressing frame and pressing plate ear plates arranged on two sides of the pressing frame, the pressing plate ear plates are located on the outer sides of the pressing frame, the pressing frame is sleeved on the periphery of the friction block, and the pressing plate ear plates are pressed on the corresponding friction block ear plates.
As a further improvement of the above technical scheme, the fastening assembly includes a first fixing pin column and a first snap spring, the first fixing pin column is disposed on the pressure plate ear plate, the friction block ear plate is provided with a positioning hole, the back surface of the metal tray is provided with a first connecting counter bore, the first fixing pin column penetrates through the positioning hole and is located in the first connecting counter bore, the first fixing pin column is provided with a first snap spring groove, and the first snap spring is sleeved on the first snap spring groove and abuts against a counter sink of the first connecting counter bore.
As a further improvement of the technical scheme, the back surface of the metal tray is provided with a spherical convex block, the front surface of the steel back is provided with a spherical groove, and the spherical convex block is matched with the spherical groove.
As a further improvement of the above technical scheme, a second fixing pin is arranged at the end of the spherical convex block, a second connecting counter bore is arranged at the back of the steel backing, the second connecting counter bore is communicated with the spherical groove, the second fixing pin penetrates through the spherical groove and is located in the second connecting counter bore, a second clamp spring groove is arranged on the second fixing pin, a second clamp spring is sleeved outside the second clamp spring groove, and the second clamp spring abuts against a sinking platform of the second connecting counter bore.
As the further improvement of above-mentioned technical scheme, the positive both sides of clutch blocks are equipped with the mounting groove at the bottom of the area, the tank bottom of mounting groove constitutes the clutch blocks otic placode, the metal pressing plate is including pressing the frame and establishing the clamp plate otic placode in pressing the frame both sides, the clamp plate otic placode is located the inboard of pressing the frame, press the frame cover in the periphery of clutch blocks, the clamp plate otic placode is located the mounting groove that corresponds and presses on the clutch blocks otic placode.
As a further improvement of the technical scheme, the two sides of the front surface of the friction block are provided with mounting grooves with bottoms, the bottoms of the mounting grooves form the lug plates of the friction block, the metal pressing plate comprises two pressing plate blocks, and the pressing plate blocks are positioned in the corresponding mounting grooves and pressed on the lug plates of the friction block.
As the further improvement of above-mentioned technical scheme, the positive both sides of clutch blocks are equipped with the mounting groove at the bottom of taking, the tank bottom of mounting groove constitutes the clutch blocks otic placode, through a chip groove intercommunication between the mounting groove of both sides, the metal pressing plate includes the layering and locates two clamp plate piecemeals at layering both ends, the layering is located in the chip groove, the clamp plate piecemeal is located the mounting groove that corresponds and is pressed on the clutch blocks otic placode.
As a further improvement of the above technical scheme, be equipped with the mounting groove on a pair of side of clutch blocks respectively, the tank bottom of mounting groove constitutes the clutch blocks otic placode, the diapire of mounting groove is equipped with and supplies the open slot, the metal pressing plate includes two clamp plate piecemeals, the clamp plate piecemeal is inserted and is located in the mounting groove and press on the clutch blocks otic placode.
As a further improvement of the technical scheme, the friction block is a square block.
Compared with the prior art, the invention has the advantages that:
the invention relates to a compression joint type brake pad for a high-speed railway vehicle, which is characterized in that firstly, the compression joint type connection of a friction block and a metal tray is realized through a metal pressure plate, the existing riveting/bolt connection mode is cancelled, a friction block lug plate serving as a compression joint part is positioned at the periphery of the friction block (flange type connection), a fastening position is moved to the periphery of the friction block, the effective friction area of the friction block is basically not occupied, the area and the thickness of the friction block are utilized to the maximum extent, the reduction of the friction area of the friction block is avoided, the utilization rate of the friction block is improved, the service life of the brake pad is prolonged, the material cost is saved, secondly, the friction block is connected in a compression joint type manner, a certain gap exists between the friction block and a metal sleeve by adopting a mechanical connection method, the problem of thermal mismatch between the friction block and connecting metal in the braking process is solved, and the thermal stress of the brake pad in the braking process is greatly weakened, the safety and the reliability are higher; furthermore, the shear-resistant boss arranged between the friction block and the metal tray is different from a rivet connection structure, the shearing area is utilized greatly, a single friction block transmits larger friction load, the stress is uniform, the friction block is not loosened, and the rotation stopping effect is achieved. In addition, the friction block, the metal pressing plate and the metal tray are connected in a compression joint mode through the fastening assembly, so that the friction block and the metal tray can be detached, the assembly and disassembly are convenient, and the repeated utilization can be realized.
Drawings
Fig. 1 is a front view of a pressure-contact type high-speed railway vehicle brake pad according to embodiment 1 of the present invention.
Fig. 2 is a rear view of a pressure-contact type brake pad for a high-speed railway vehicle according to embodiment 1 of the present invention.
Fig. 3 is a view a-a of fig. 1.
Fig. 4 is a schematic view of the connection relationship among the friction block, the metal pressing plate and the metal tray in embodiment 1 of the present invention.
Fig. 5 is a schematic structural view in embodiment 1 of the present invention.
Fig. 6 is a view B-B of fig. 5.
Fig. 7 is a schematic structural view of a metal platen in example 1 of the present invention.
Fig. 8 is a schematic structural view of a metal tray in example 1 of the present invention.
Fig. 9 is an exploded perspective view of the friction block, the metal pressing plate and the metal tray in example 2 of the present invention.
Fig. 10 is a schematic structural view of a friction block in embodiment 2 of the present invention.
Fig. 11 is a schematic structural view of a metal platen in example 2 of the present invention.
Fig. 12 is an exploded perspective view of the friction block, the metal pressing plate and the metal tray in example 3 of the present invention.
Fig. 13 is an exploded perspective view of the friction block, the metal pressing plate and the metal tray in example 4 of the present invention.
Fig. 14 is an exploded perspective view of the friction block, the metal pressing plate and the metal tray in example 5 of the present invention.
Fig. 15 is a schematic structural view of a friction block in embodiment 5 of the present invention.
The reference numerals in the figures denote:
1. a friction block; 101. positioning holes; 11. a friction block ear plate; 12. a shear resistant groove; 13. mounting grooves; 131. an open slot; 14. a chip groove; 2. a metal platen; 21. pressing the frame; 22. pressing a plate ear plate; 23. partitioning a pressing plate; 24. layering; 3. a metal tray; 301. a first connecting counterbore; 31. a shear-resistant bump; 32. a spherical bump; 33. a second securing pin; 331. a second clamp spring groove; 4. a steel backing; 41. a spherical groove; 42. a second connecting counterbore; 5. a fastening assembly; 51. a first fixed pin; 511. a first clamp spring groove; 52. a first clamp spring; 6. and a second clamp spring.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples of the specification.
Example 1
As shown in fig. 1 to 8, the high-utilization compression joint type brake pad for a high-speed rail vehicle according to the present embodiment includes a friction block 1, a metal pressing plate 2, a metal tray 3 and a steel back 4, the friction block 1 is disposed on the metal tray 3, the metal tray 3 is disposed on the steel back 4, friction block ear plates 11 are disposed on two sides of the friction block 1, the friction block ear plates 11 are clamped between the metal pressing plate 2 and the metal tray 3 and locked by fastening assemblies 5, shear-resistant protrusions 31 and shear-resistant grooves 12 which are mutually matched are disposed between the friction block 1 and the metal tray 3, preferably, the shear-resistant grooves 12 are disposed on the back surface of the friction block 1, and the shear-resistant protrusions 31 are disposed on the front surface of the metal tray 3. The metal tray 3 is connected with the steel backing 4. The front surface of the friction block 1 is a friction surface.
When the friction block is installed, the friction block 1 is flatly placed on the metal tray 3, the friction block ear plate 11 abuts against the metal tray 3, then the metal pressing plate 2 presses the friction block ear plate 11 of the friction block 1 from top to bottom, the metal pressing plate 2 presses the friction block ear plate 11 on the metal tray 3, and the metal pressing plate 2, the friction block 1 and the metal tray 3 are connected into a whole through the fastening assembly 5; and then, connecting the metal tray 3 with the steel backing 4. The shear grooves 12 and the shear lugs 31 are preferably square, and the combination of the shear grooves and the shear lugs serves to prevent the friction block 1 from rotating. The friction block 1 is preferably made of carbon-ceramic composite materials with high heat resistance and high wear resistance, and can meet the requirements of stable friction coefficient, high heat resistance, high wear resistance and the like required in the braking process of high-grade railway vehicles.
The brake pad is characterized in that firstly, the friction block 1 is connected with the metal tray 3 in a compression joint mode through the metal pressing plate 2, the existing riveting/bolt connection mode is cancelled, the friction block ear plate 11 serving as a compression joint part is located at the periphery of the friction block 1 (flange connection), the fastening position is moved to the periphery of the friction block 1, the effective friction area of the friction block 1 is basically not occupied, the area and the thickness of the friction block 1 are utilized to the maximum extent, the utilization rate of the friction block 1 is improved, the service life of the brake pad is prolonged, the material cost is saved, secondly, the friction block 1 is connected in a compression joint mode, the problem of thermal stress between the friction block (especially the friction block made of carbon ceramic composite materials) and connecting metal is solved, the thermal stress of the brake pad in the braking process is greatly weakened, and the brake pad is safer and more reliable; furthermore, the shear-resistant boss arranged between the friction block 1 and the metal tray 3 is different from the existing structure, the single friction block 1 transmits larger friction load, is stressed uniformly and is not loosened, and meanwhile, the rotation stopping effect is achieved. In addition, the friction block 1, the metal pressing plate 2 and the metal tray 3 are connected in a crimping mode through the fastening assembly 5, so that the friction block and the metal tray 3 can be detached, the assembly and disassembly are convenient, and the reuse can be realized.
In the specific application example, the friction blocks 1 are 6 to 10. In this embodiment, the number of the friction blocks 1 is preferably 8, and the metal pressing plate 2 and the metal tray 3 correspond to the friction blocks 1 one by one. For heat dissipation and chip removal, the front face of the friction block 1 is provided with chip grooves 14. Preferably, the friction block 1 is shaped as a quadrilateral with rounded corners.
In this embodiment, the metal pressing plate 2 includes a pressing frame 21 and pressing plate ear plates 22 disposed on two sides of the pressing frame 21, the pressing plate ear plates 22 are located outside the pressing frame 21, the pressing frame 21 is sleeved on the periphery of the friction block 1, and the pressing plate ear plates 22 are pressed on the corresponding friction block ear plates 11.
Specifically, the fastening assembly 5 includes a first fixing pin 51 and a first snap spring 52, the first fixing pin 51 is disposed on the pressing plate ear plate 22, the friction block ear plate 11 is provided with a positioning hole 101, the back surface of the metal tray 3 is provided with a first connecting counterbore 301, the first fixing pin 51 penetrates through the positioning hole 101 and is located in the first connecting counterbore 301, the first fixing pin 51 is provided with a first snap spring groove 511, the first snap spring 52 is sleeved on the first snap spring groove 511 and abuts against a sunken platform of the first connecting counterbore 301, the first fixing pin 51 can be prevented from being separated from the first connecting counterbore 301, and then the connection between the friction block 1 and the metal tray 3 is realized. The first circlip 52 is preferably a small butterfly circlip. The friction block 1, the metal pressing plate 2 and the metal tray 3 are elastically connected into a whole through the first clamp spring 52 and the first fixing pin 51 instead of being tightly connected, so that the friction block 1 has a certain floating space.
In this embodiment, the back surface of the metal tray 3 is provided with the spherical protrusion 32, the front surface of the steel backing 4 is provided with the spherical groove 41, and the spherical protrusion 32 and the spherical groove 41 are matched with each other. The spherical protrusion 32 and the spherical groove 41 are combined into a certain floating space, so that the friction block 1 has a certain floating space, and the friction surface is attached to the brake disc more tightly.
Further, the end of the spherical bump 32 is provided with a second fixing pin 33, the back of the steel backing 4 is provided with a second connecting counterbore 42, the second connecting counterbore 42 is communicated with the spherical groove 41, the second fixing pin 33 penetrates through the spherical groove 41 and is located in the second connecting counterbore 42, the second fixing pin 33 is provided with a second clamp spring groove 331, the second clamp spring groove 331 is externally sleeved with a second clamp spring 6, the second clamp spring 6 abuts against a sunken platform of the second connecting counterbore 42, the second fixing pin 33 can be prevented from being separated from the second connecting counterbore 42, and then the connection between the metal tray 3 and the steel backing 4 is realized. The second circlip 6 is preferably a large butterfly circlip. The metal tray 3 and the steel back 4 are elastically connected into a whole through the second clamp spring 6 and the second fixing pin 33 instead of being tightly connected, so that the metal tray 3 and the friction block 1 on the metal tray have certain floating space.
It should be noted that, in addition to the present embodiment, the shear bumps 31 may be provided on the friction blocks 1, and the shear grooves 12 may be provided on the metal pallet 3. It should be further noted that more than two friction block ear plates 11 can be arranged and are respectively arranged around the friction block 1.
Example 2
As shown in fig. 9 to 11, the pressure-contact type brake pad for high-speed railway vehicle of the present embodiment is different from embodiment 1 only in that:
in this embodiment, the two sides of the front surface of the friction block 1 are provided with mounting grooves 13 with bottoms, the bottoms of the mounting grooves 13 form the friction block ear plates 11, that is, the friction block ear plates 11 are embedded, and correspondingly, the two pressing plate ear plates 22 are located on the inner side of the pressing frame 21. During the equipment, press frame 21 cover in the periphery of clutch blocks 1, clamp plate otic placode 22 is located corresponding mounting groove 13 and presses on clutch blocks otic placode 11, and the clamp plate otic placode 22, clutch blocks otic placode 11, the tight three of metal tray 3 are pressed tightly to the rethread first fixed round pin post 51 and first jump ring 52 realization.
In the compression joint type connection, the metal pressure plate 2 is hidden in the mounting groove 13 of the friction block 1 without an outer edge, the whole friction block 1 occupies smaller space, and the friction surface area of the brake pad is increased to the greatest extent. Compared with embodiment 1, the structure is more compact except for having all the effects of the pressure welding type in embodiment 1.
In this embodiment, the mounting groove 13 is semicircular, and the pressing plate ear plate 22 is also semicircular, so that the friction surface of the friction block 1 can be reduced. The friction block 1 is a carbon ceramic square block.
The rest parts which are not described are basically the same as the embodiment 1, and are not described again.
Example 3
As shown in fig. 12, the pressure-contact type brake pad for high-speed railway vehicles of the present embodiment is different from embodiment 1 only in that:
in this embodiment, the positive both sides of clutch block 1 are equipped with mounting groove 13 at the bottom of the area, the tank bottom of mounting groove 13 constitutes foretell clutch block otic placode 11, clutch block otic placode 11 belongs to embedded promptly, metal pressing plate 2 includes two independent clamp plate piecemeals 23, clamp plate piecemeal 23 is located corresponding mounting groove 13 and presses on clutch block otic placode 11, first fixed round pin post 51 is established on clamp plate piecemeal 23, realize connecting clamp plate piecemeal 23, clutch block otic placode 11, the tight clamp of 3 three of metal tray through first fixed round pin post 51 and first jump ring 52.
In the crimping connection, the two scattered small pieces of the metal pressing plate 2 are processed and installed more flexibly; the metal pressure plate 2 is hidden in the mounting groove 13 of the friction block 1 without an outer edge, the whole friction block 1 occupies smaller space, and the friction surface area of the brake pad is increased to the maximum extent. Compared with embodiment 1, except for having all effects of the pressure welding type in embodiment 1, the structure is more compact, and compared with embodiment 2, the structure is simpler and the cost is lower due to the omission of the pressure frame 21.
In this embodiment, the mounting groove 13 is semicircular, and the pressing plate ear plate 22 is also semicircular, so that the friction surface of the friction block 1 can be reduced. The friction block 1 is a carbon ceramic square block.
The rest parts which are not described are basically the same as the embodiment 1, and are not described again.
Example 4
As shown in fig. 13, the pressure-contact type brake pad for high-speed railway vehicles of the present embodiment is different from embodiment 1 only in that:
in this embodiment, the front two sides of the friction block 1 are provided with the mounting grooves 13 with bottoms, the bottoms of the mounting grooves 13 form the friction block ear plates 11, that is, the friction block ear plates 11 are embedded, the mounting grooves 13 on the two sides are communicated with each other through a chip groove 14, the metal pressing plate 2 comprises a pressing strip 24 and two pressing plate blocks 23 arranged at the two ends of the pressing strip 24, and the pressing plate blocks 23 and the pressing strip 24 are of an integrally formed integral structure. The pressing strips 24 are arranged in the chip grooves 14, the pressing plate blocks 23 are located in the corresponding installation grooves 13 and pressed on the friction block ear plates 11, the first fixing pin columns 51 are arranged on the pressing plate blocks 23, and the pressing plate blocks 23, the friction block ear plates 11 and the metal tray 3 are connected and clamped through the first fixing pin columns 51 and the first snap springs 52.
The metal pressure plate 2 is hidden in the mounting groove 13 of the friction block 1 without an outer edge, the whole friction block 1 occupies smaller space, and the friction surface area of the brake pad is increased to the maximum extent; the contact area between the metal pressing plate 2 with the connecting rib (pressing strip 24) and the friction block 1 is larger, and the metal pressing plate is firmer and more reliable; and the chip removal groove 14 can be used for heat dissipation and chip removal.
In this embodiment, the mounting groove 13 is semicircular, and the pressing plate ear plate 22 is also semicircular, so as to reduce the occupation of the friction surface of the friction block 1. The friction block 1 is a carbon ceramic square block.
The rest parts which are not described are basically the same as the embodiment 1, and are not described again.
Example 5
As shown in fig. 14 and 15, the pressure-contact type brake pad for high-speed railway vehicles of the present embodiment is different from embodiment 1 only in that:
in this embodiment, be equipped with mounting groove 13 on a pair of side of clutch block 1 respectively, the tank bottom of mounting groove 13 constitutes clutch block otic placode 11, clutch block otic placode 11 also belongs to embedded promptly, the diapire of mounting groove 13 is equipped with and supplies open slot 131, metal pressing plate 2 includes two independent clamp plate piecemeals 23, first fixed pin post 51 is established on clamp plate piecemeal 23, during the installation, clamp plate piecemeal 23 is inserted from the side and is located mounting groove 13 in, press on clutch block otic placode 11, first fixed pin post 51 enters into the inslot through the opening of open slot 131, first fixed pin post 51 just so can be connected with the first counter bore 301 that connects at the back of metal tray 3, realize connecting clamp plate piecemeal 23, clutch block otic placode 11, the three of metal tray 3 presss from both sides tightly through first fixed pin post 51 and first jump ring 52.
In the crimping connection, the two scattered small pieces of the metal pressing plate 2 are processed and installed more flexibly; the metal pressure plate 2 is hidden in the mounting groove 13 of the friction block 1, the mounting groove 13 is arranged on the side surface of the friction block 1, grooves (or holes) do not need to be formed on the friction surface of the friction block 1, the friction area of the friction block 1 does not need to be occupied, and the friction surface area of the brake pad is increased to the maximum extent. During braking, the metal pressing plate does not directly exchange heat with high-temperature air in a convection manner, so that the temperature is lower and the thermal stress is smaller. Compared with embodiment 1, except for having all effects of the pressure welding type in embodiment 1, the structure is more compact, and compared with embodiment 2, the structure is simpler and the cost is lower due to the omission of the pressure frame 21.
In this embodiment, the mounting groove 13 is semicircular, and the pressing plate block 23 is also semicircular, so that the friction surface of the friction block 1 can be reduced. The friction block 1 is a carbon ceramic square block.
The rest parts which are not described are basically the same as the embodiment 1, and are not described again.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make numerous possible variations and modifications to the present invention, or modify equivalent embodiments to equivalent variations, without departing from the scope of the invention, using the teachings disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention should fall within the protection scope of the technical scheme of the present invention, unless the technical spirit of the present invention departs from the content of the technical scheme of the present invention.
Claims (5)
1. The utility model provides a high utilization's high-speed rail vehicle of crimping formula is with brake block which characterized in that: the friction block comprises a friction block (1), a metal pressing plate (2), a metal tray (3) and a steel backing (4), wherein friction block ear plates (11) are arranged on two sides of the friction block (1), the friction block ear plates (11) are clamped between the metal pressing plate (2) and the metal tray (3), the friction block ear plates (11) and the metal tray are locked through a fastening assembly (5), a shear resisting block (31) and a shear resisting groove (12) which are matched with each other are arranged between the friction block (1) and the metal tray (3), the metal tray (3) is connected with the steel backing (4), the shear resisting block (31) and the shear resisting groove (12) are square, the friction block (1) is made of a carbon ceramic composite material, mounting grooves (13) with bottoms are arranged on two positive sides of the friction block (1), the groove bottoms of the mounting grooves (13) form the friction block ear plates (11), and the mounting grooves (13) on two sides are communicated through a chip groove (14), the metal pressing plate (2) comprises a pressing strip (24) and two pressing plate sub-blocks (23) arranged at two ends of the pressing strip (24), the pressing strip (24) is arranged in a chip groove (14), and the pressing plate sub-blocks (23) are positioned in corresponding mounting grooves (13) and pressed on the friction block ear plates (11);
or, be equipped with mounting groove (13) on a pair of side of clutch block (1) respectively, the tank bottom of mounting groove (13) constitutes clutch block otic placode (11), the diapire of mounting groove (13) is equipped with open slot (131), metal pressing plate (2) are including two clamp plate piecemeals (23), clamp plate piecemeal (23) are inserted and are located in mounting groove (13) and press on clutch block otic placode (11).
2. The high-utilization press-fit high-speed railway vehicle brake pad according to claim 1, wherein: the back of metal tray (3) is equipped with sphere lug (32), the front of steel backing (4) is equipped with sphere recess (41), sphere lug (32) and sphere recess (41) are mutually supported.
3. The high-utilization press-fit high-speed railway vehicle brake pad according to claim 2, wherein: the tip of sphere lug (32) is equipped with second fixed round pin post (33), the back of steel backing (4) is equipped with the second and connects counter bore (42), counter bore (42) and sphere recess (41) intercommunication are connected to the second, second fixed round pin post (33) pass sphere recess (41) and are located second connection counter bore (42), be equipped with second jump ring groove (331) on second fixed round pin post (33), second jump ring groove (331) overcoat has second jump ring (6), second jump ring (6) support and lean on the heavy platform of second connection counter bore (42).
4. The high-utilization press-fit high-speed railway vehicle brake pad according to claim 1, wherein: the positive both sides of clutch block (1) are equipped with mounting groove (13) at the bottom of taking, the tank bottom of mounting groove (13) constitutes clutch block otic placode (11), metal clamp plate (2) are including pressing frame (21) and establishing clamp plate otic placode (22) in pressing frame (21) both sides, clamp plate otic placode (22) are located the inboard of pressing frame (21), press frame (21) cover in the periphery of clutch block (1), clamp plate otic placode (22) are located corresponding mounting groove (13) and press on clutch block otic placode (11).
5. The high-utilization press-fit high-speed railway vehicle brake pad according to claim 4, wherein: the friction block (1) is a square block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110477219.0A CN113236696B (en) | 2021-04-29 | 2021-04-29 | High-utilization-rate compression joint type brake pad for high-speed railway vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110477219.0A CN113236696B (en) | 2021-04-29 | 2021-04-29 | High-utilization-rate compression joint type brake pad for high-speed railway vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113236696A CN113236696A (en) | 2021-08-10 |
| CN113236696B true CN113236696B (en) | 2022-09-20 |
Family
ID=77131627
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110477219.0A Active CN113236696B (en) | 2021-04-29 | 2021-04-29 | High-utilization-rate compression joint type brake pad for high-speed railway vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113236696B (en) |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2904138A (en) * | 1957-02-26 | 1959-09-15 | American Brake Shoe Co | Brake shoes |
| FR2702528B1 (en) * | 1993-03-12 | 1995-05-05 | Lorraine Carbone | Improved fixing stud brake pads. |
| FR2729197B1 (en) * | 1995-01-11 | 1997-03-28 | Usines Dehousse | BRAKE LINING, PARTICULARLY FOR RAIL VEHICLE |
| DE102005030619B4 (en) * | 2004-07-01 | 2008-03-27 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Brake pad for a disc brake of a vehicle |
| JP6073650B2 (en) * | 2012-11-08 | 2017-02-01 | 曙ブレーキ工業株式会社 | Friction pad assembly for disc brake |
| CN103133579B (en) * | 2013-02-06 | 2016-05-25 | 北京天宜上佳新材料有限公司 | The floating type brake pad of sleety weather |
| CN207777467U (en) * | 2017-04-24 | 2018-08-28 | 青岛亚通达铁路设备有限公司 | Disk brake friction lining assembly |
| CN107152479B (en) * | 2017-07-21 | 2023-08-22 | 北京建筑大学 | Train brake pad |
| CN211901402U (en) * | 2020-03-26 | 2020-11-10 | 瑞安市弘迪汽车零部件有限公司 | Fixed firm car brake block |
-
2021
- 2021-04-29 CN CN202110477219.0A patent/CN113236696B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113236696A (en) | 2021-08-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US10731721B2 (en) | Elastic adjustable brake pad for use in train | |
| KR20120099754A (en) | Brake lining for rolling stock | |
| KR20120132542A (en) | Rail car brake lining | |
| US20080257664A1 (en) | Pad Assembly For Use in a Disc Brake | |
| CN113236696B (en) | High-utilization-rate compression joint type brake pad for high-speed railway vehicle | |
| CN215110221U (en) | Crimping type brake pad for high-speed railway vehicle | |
| KR100343068B1 (en) | Separating brake disc | |
| CN101162033A (en) | Freight car compartment powder metallurgy brake block | |
| CN111075865A (en) | Adjustable brake pad for train | |
| CN215634595U (en) | High-utilization-rate brake pad for high-speed rail vehicle | |
| CN215110223U (en) | High-speed rail vehicle brake pad of joint formula | |
| CN113236697B (en) | High-speed railway vehicle brake pad without occupying friction surface | |
| CN211737830U (en) | Adjustable brake pad for train | |
| CN204004095U (en) | Track traffic elastic floating brake pad | |
| CN213117221U (en) | Brake pad of disc brake beneficial to heat dissipation | |
| CN211737840U (en) | Improved brake pad for high-speed train | |
| CN104728318A (en) | Brake pad of high-speed train | |
| CN209294304U (en) | A kind of brake lining structure of detachable brake shoes | |
| CN208997229U (en) | A kind of wear brake pad | |
| CN103062265A (en) | Novel high-speed brake lining | |
| CN208900594U (en) | A kind of novel elastic structure brake lining | |
| TWI427009B (en) | Rail car with a brake to make | |
| CN217056099U (en) | Brake pad applied to disc brake | |
| CN201026889Y (en) | Steel rail framework insertion type frictional braking panel | |
| CN216519333U (en) | Train brake pad |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20231122 Address after: Room 356, No. 999 Xufu Avenue, Gaoting Town, Daishan County, Zhoushan City, Zhejiang Province, 316200 (Daixi District) Patentee after: Mouhang (Daishan) Carbon Ceramics Co.,Ltd. Address before: 100097 No.308, 3rd floor, building 1, yard 6, Yuanda Road, Haidian District, Beijing Patentee before: Zhongjing Jitai (Beijing) Technology Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240515 Address after: 264117, No. 60 Dayao Road, Dayao Street, Muping District, Yantai City, Shandong Province Patentee after: Mou Junxiang Aviation Carbon Ceramic Composite Materials (Yantai) Co.,Ltd. Country or region after: China Address before: Room 356, No. 999 Xufu Avenue, Gaoting Town, Daishan County, Zhoushan City, Zhejiang Province, 316200 (Daixi District) Patentee before: Mouhang (Daishan) Carbon Ceramics Co.,Ltd. Country or region before: China |