CN107795612B - Brake disc and vehicle with same - Google Patents
Brake disc and vehicle with same Download PDFInfo
- Publication number
- CN107795612B CN107795612B CN201711056087.4A CN201711056087A CN107795612B CN 107795612 B CN107795612 B CN 107795612B CN 201711056087 A CN201711056087 A CN 201711056087A CN 107795612 B CN107795612 B CN 107795612B
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- mounting hole
- disc
- hub
- force transmission
- key
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- 230000005540 biological transmission Effects 0.000 claims abstract description 161
- 210000000078 claw Anatomy 0.000 claims abstract description 38
- 230000000149 penetrating effect Effects 0.000 claims abstract description 21
- 125000006850 spacer group Chemical group 0.000 claims description 100
- 238000012546 transfer Methods 0.000 claims description 51
- 238000000034 method Methods 0.000 claims description 14
- 230000008569 process Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 2
- 238000009434 installation Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 238000013461 design Methods 0.000 description 4
- 230000017525 heat dissipation Effects 0.000 description 3
- 238000011900 installation process Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D65/12—Discs; Drums for disc brakes
- F16D65/123—Discs; Drums for disc brakes comprising an annular disc secured to a hub member; Discs characterised by means for mounting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/1304—Structure
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/02—Braking members; Mounting thereof
- F16D2065/13—Parts or details of discs or drums
- F16D2065/134—Connection
- F16D2065/1392—Connection elements
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
The invention provides a brake disc and a vehicle with the same, wherein the brake disc comprises: the disc body is provided with a plurality of connecting claws on the inner ring of the disc body, the connecting claws are arranged at intervals along the circumferential direction of the inner ring, and a disc body force transmission groove is formed between at least two adjacent connecting claws; the disc hub is connected with the disc body, at least one disc hub force transmission key mounting hole is formed in the disc hub, and the disc hub force transmission key mounting hole corresponds to the disc body force transmission groove; the first end of the disc hub force transmission key is arranged in the disc body force transmission groove in a penetrating mode, and the second end of the disc hub force transmission key is arranged in the disc hub force transmission key mounting hole in a penetrating mode. The brake disc solves the problem that the disc body and the disc hub of the brake disc in the prior art are complex in positioning structure.
Description
Technical Field
The invention relates to the field of vehicles, in particular to a brake disc and a vehicle with the same.
Background
With the rapid development of rail transit, disc brake is increasingly applied to a basic brake device of a rail transit vehicle because of the advantages of stable friction performance, large energy absorption, good heat dissipation performance, small damage to the tread and the like compared with tread brake.
The brake disc is used as an important component of the disc-shaped basic brake device, and the friction surface of the brake disc is pressed by the brake pad in the train braking process so as to realize train braking, thereby ensuring safe and stable running of the train and having important effect on ensuring safe and reliable running of the train.
In the braking process, the brake disc bears the braking torque applied by the brake pad, and the brake disc connecting piece bears the braking torque transmitted by the brake pad through the disc surface, so that the fastening performance and reliability requirements on the brake disc connecting piece are higher. Simultaneously, the disc body is influenced by thermal load to expand radially outwards due to the action of the brake pads in the braking process.
The existing brake disc is firstly required to be initially positioned with respect to the installation of the brake disc, and the existing positioning structure is complex.
Disclosure of Invention
The invention mainly aims to provide a brake disc and a vehicle with the same, so as to solve the problem that a disc body and a disc hub of the brake disc in the prior art are complex in positioning structure.
In order to achieve the above object, according to one aspect of the present invention, there is provided a brake disc comprising: the disc body is provided with a plurality of connecting claws on the inner ring of the disc body, the connecting claws are arranged at intervals along the circumferential direction of the inner ring, and a disc body force transmission groove is formed between at least two adjacent connecting claws; the disc hub is connected with the disc body, at least one disc hub force transmission key mounting hole is formed in the disc hub, and the disc hub force transmission key mounting hole corresponds to the disc body force transmission groove; the first end of the disc hub force transmission key is arranged in the disc body force transmission groove in a penetrating mode, and the second end of the disc hub force transmission key is arranged in the disc hub force transmission key mounting hole in a penetrating mode.
Further, the hub force transmission key and the disc body force transmission groove are in clearance fit with each other.
Further, the plurality of connecting claws are uniformly distributed along the circumferential direction of the inner ring, the plurality of disc body force transmission grooves are formed, and the plurality of disc body force transmission grooves are uniformly distributed.
Further, the connecting claw is a rectangular block, and the disc body force transmission groove is a rectangular groove.
Further, be provided with first mounting hole on the connecting claw, be provided with the second mounting hole corresponding with first mounting hole on the dish hub, the brake disc still includes: the connecting piece is arranged in the first mounting hole and the second mounting hole in a penetrating mode, the connecting piece is in clearance fit with the first mounting hole and the second mounting hole, the minimum value of the clearance between the connecting piece and the first mounting hole and the clearance between the connecting piece and the second mounting hole is d, and the maximum value of the clearance between the disc hub force transmission key and the disc body force transmission groove and the clearance between the disc hub force transmission key and the disc hub force transmission key mounting hole is e, wherein d is larger than e.
Further, the central axes of the disk body and the disk hub are coincident, the first mounting hole and the second mounting hole are not coaxial, the distance from the central line of the first mounting hole to the central axis of the disk body is a, and the distance from the central line of the second mounting hole to the central axis of the disk hub is b, wherein a is smaller than b.
Further, the aperture of the first mounting hole is larger than the aperture of the second mounting hole.
Further, the hub includes: the disk hub body and flange, the flange encircles the circumference lateral wall setting of disk hub body, and disk hub biography power key mounting hole sets up on the flange, and the brake disc still includes: a spacer ring force transmission key; the spacer ring is sleeved on the disc hub body, and the connecting claw is positioned between the flange and the spacer ring; wherein, be provided with at least one spacer ring biography power key mounting groove on the inner circle of spacer ring, be provided with at least one spacer ring biography power key mounting hole on the dish hub body, spacer ring biography power key mounting hole is corresponding with spacer ring biography power key mounting groove, and spacer ring biography power key's first end wears to establish in spacer ring biography power key mounting groove, and spacer ring biography power key's second end wears to establish in spacer ring biography power key mounting hole.
Further, the spacer ring force transmission key and the spacer ring force transmission key mounting groove are in clearance fit with the spacer ring force transmission key mounting hole.
Further, a third mounting hole is formed in the spacer ring and corresponds to the first mounting hole and the second mounting hole, and the connecting piece penetrates through the second mounting hole, the first mounting hole and the third mounting hole.
Further, the connecting piece is in clearance fit with the third mounting hole, the minimum clearance value of the connecting piece and the third mounting hole is f, the maximum value of the clearance between the spacer ring force transmission key and the spacer ring force transmission key mounting groove and the clearance between the spacer ring force transmission key and the spacer ring force transmission key mounting hole is g, f is larger than g, d is larger than g, and f is larger than e.
Further, the central axes of the disc body and the spacer ring are coincident, the first mounting hole and the third mounting hole are not coaxial, and the distance from the central line of the third mounting hole to the central axis of the spacer ring is c, wherein a is smaller than c.
Further, the aperture of the first mounting hole is larger than the aperture of the third mounting hole.
Further, at least one process hole is formed in the hub and is communicated with the hub force transmission key mounting hole, and the process hole is used for withdrawing the hub force transmission key from the hub force transmission key mounting hole.
According to another aspect of the invention there is provided a vehicle comprising a brake disc as described above.
According to the brake disc, the disc body force transmission groove is formed in the disc body, the disc hub is provided with the disc hub force transmission key mounting hole, and the first end of the disc hub force transmission key is arranged in the disc body force transmission groove in a penetrating manner, and the second end of the disc hub force transmission key is arranged in the disc hub force transmission key mounting hole in a penetrating manner, so that the primary positioning of the disc body and the disc hub is realized. The inner ring of the disc body is provided with a plurality of connecting claws, the connecting claws are arranged at intervals along the circumferential direction of the inner ring, and a disc body force transmission groove is formed between at least two adjacent connecting claws. In the specific installation process, the disc body and the disc hub are oppositely arranged, the disc body force transmission groove corresponds to the disc hub force transmission key installation hole, and the disc hub force transmission key is inserted into the disc body force transmission groove and the disc hub force transmission key installation hole, so that the preliminary positioning of the disc body and the disc hub is completed. According to the brake disc, the disc body and the disc hub can be initially positioned by inserting the disc hub force transmission key into the disc body force transmission groove and the disc hub force transmission key mounting hole, so that the problem that the disc body and the disc hub positioning structure of the brake disc in the prior art are complex is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the invention. In the drawings:
fig. 1 shows a schematic structural view of an embodiment of a brake disc according to the invention;
FIG. 2 shows a schematic cross-sectional view of the brake disc of FIG. 1 at A-A;
fig. 3 shows a schematic structural view of a disc body of a brake disc according to the present invention;
fig. 4 shows a schematic structural view of a hub of a brake disc according to the present invention; and
fig. 5 shows a schematic structural view of a cage of a brake disc according to the present invention.
Wherein the above figures include the following reference numerals:
10. a tray body; 11. a connecting claw; 111. a first mounting hole; 12. a disc body force transmission groove; 121. cutting into sections; 13. a friction ring; 14. a heat dissipation rib; 20. a hub; 21. a hub force transmission key mounting hole; 22. a process hole; 23. a hub body; 24. a flange; 25. spacer ring force transmission key mounting holes; 26. a second mounting hole; 30. a hub force transmission key; 40. a connecting piece; 50. a spacer ring; 51. spacer ring force transmission key mounting groove; 52. a third mounting hole; 60. a spacer ring force transmission key; 70. a nut; 80. a gasket.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in 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.
The present invention provides a brake disc, please refer to fig. 1 to 4, the brake disc includes: the disc body 10, a plurality of connecting claws 11 are arranged on the inner ring of the disc body 10, the plurality of connecting claws 11 are arranged at intervals along the circumferential direction of the inner ring, and a disc body force transmission groove 12 is formed between at least two adjacent connecting claws 11; the disc hub 20, the disc hub 20 is connected with the disc body 10, at least one disc hub force transmission key mounting hole 21 is arranged on the disc hub 20, and the disc hub force transmission key mounting hole 21 corresponds to the disc body force transmission groove 12; the first end of the disc hub force transmission key 30 is arranged in the disc body force transmission groove 12 in a penetrating way, and the second end of the disc hub force transmission key 30 is arranged in the disc hub force transmission key mounting hole 21 in a penetrating way.
According to the brake disc, the disc body force transmission groove 12 is formed in the disc body 10, the disc hub 20 is provided with the disc hub force transmission key mounting hole 21, and the first end of the disc hub force transmission key 30 is arranged in the disc body force transmission groove 12 in a penetrating manner, and the second end of the disc hub force transmission key 30 is arranged in the disc hub force transmission key mounting hole 21 in a penetrating manner, so that preliminary positioning of the disc body 10 and the disc hub 20 is achieved. Wherein, be provided with a plurality of connection claws 11 on the inner circle of disk body 10, a plurality of connection claws 11 set up along the circumference interval of inner circle, form disk body biography power groove 12 between at least two adjacent connection claws 11. In the specific installation process, the disc body 10 and the disc hub 20 are oppositely arranged, the disc body force transmission groove 12 corresponds to the disc hub force transmission key installation hole 21, and the disc hub force transmission key 30 is inserted into the disc body force transmission groove 12 and the disc hub force transmission key installation hole 21, so that the preliminary positioning of the disc body 10 and the disc hub 20 is completed. The brake disc of the invention can complete the preliminary positioning of the disc body 10 and the disc hub 20 by inserting the disc hub force transmission key 30 into the disc body force transmission groove 12 and the disc hub force transmission key mounting hole 21, thereby solving the problem that the disc body and the disc hub positioning structure of the brake disc in the prior art are complex.
In this embodiment, an inner hole is formed on the disc body 10, and an inner ring of the disc body 10 is a hole wall of the inner hole.
Preferably, the hub transfer key 30 and the disc transfer slot 12 are both clearance fit with the hub transfer key mounting hole 21.
In order to ensure accurate positioning of the disc 10 and the hub 20, the plurality of connecting claws 11 are uniformly distributed along the circumferential direction of the inner ring, the plurality of disc force transmission grooves 12 are provided, and the plurality of disc force transmission grooves 12 are uniformly distributed.
In the present embodiment, by providing the plurality of the disc body force transmission grooves 12 and the plurality of the hub force transmission key mounting holes 21, accurate positioning of the disc body 10 and the hub 20 can be ensured.
Preferably, the number of the disc body force transmission grooves 12 and the hub force transmission key mounting holes 21 is not less than 3.
Preferably, the connecting claw 11 is a rectangular block, and the disc body force transmission groove 12 is a rectangular groove.
In this embodiment, two adjacent rectangular blocks forming the disc force transfer slot 12 have tangential planes 121, two opposite tangential planes 121 form the slot wall of the disc force transfer slot 12, and the disc force transfer slot 12 is a rectangular slot
In order to ensure stable connection of the disc body 10 and the hub 20, as shown in fig. 2 to 5, the connection claw 11 is provided with a first mounting hole 111, the hub 20 is provided with a second mounting hole 26 corresponding to the first mounting hole 111, and the brake disc further includes: the connecting piece 40 is arranged in the first mounting hole 111 and the second mounting hole 26 in a penetrating mode, the connecting piece 40 is in clearance fit with the first mounting hole 111 and the second mounting hole 26, the minimum value of the clearance between the connecting piece 40 and the first mounting hole 111 and the clearance between the connecting piece 40 and the second mounting hole 26 is d, and the maximum value of the clearance between the disc hub force transmission key 30 and the disc body force transmission groove 12 and the clearance between the disc hub force transmission key 30 and the disc hub force transmission key mounting hole 21 is e, wherein d is larger than e.
In the present embodiment, by providing the first mounting hole 111 on the connection claw 11, the second mounting hole 26 corresponding to the first mounting hole 111 is provided on the hub 20. During the installation, the connection member 40 is inserted into the first and second mounting holes 111 and 26, thereby achieving stable connection of the disk body 10 and the hub 20.
Wherein the connecting piece 40 is in clearance fit with the first mounting hole 111 and the second mounting hole 26, and the hub force transmission key 30 is in clearance fit with the disc body force transmission groove 12 and the hub force transmission key mounting hole 21.
In the present embodiment, the connecting member 40 is a bolt.
In the present embodiment, the minimum value of the gap between the connecting member 40 and the first mounting hole 111 and the gap between the connecting member 40 and the second mounting hole 26 is d, and the maximum value of the gap between the hub force transmission key 30 and the disc body force transmission groove 12 and the gap between the hub force transmission key 30 and the hub force transmission key mounting hole 21 is e. By having d greater than e, it is ensured that after failure of the connection of the connecting member 40, when the disk body 10 is deflected circumferentially under the action of the braking torque, the respective mating side surfaces will first come into contact with each other, thereby avoiding the bolted connection from being directly subjected to the action of shear forces.
It is contemplated that during use, the disc 10 will undergo radial expansion deformation. The central axes of the disk body 10 and the disk hub 20 are coincident, the first mounting hole 111 and the second mounting hole 26 are not coaxial, the distance from the central line of the first mounting hole to the central axis of the disk body 10 is a, and the distance from the central line of the second mounting hole 26 to the central axis of the disk hub 20 is b, wherein a is smaller than b.
In this embodiment, the central axes of the disk body 10 and the hub 20 are coincident, and are not coaxial with the second mounting hole 26, the distance from the central axis of the first mounting hole to the central axis of the disk body 10 is a, and the distance from the central axis of the second mounting hole 26 to the central axis of the hub 20 is b. By providing a to be smaller than b, the first mounting hole 111 is deformed by expanding radially outward, thereby further securing the safe use of the connector 40 under operating conditions.
Preferably, the first mounting hole 111 has a larger aperture than the second mounting hole 26.
As shown in fig. 2 and 4, for the specific structure of the hub 20, the hub 20 includes: hub body 23 and flange 24, flange 24 encircles the circumference lateral wall setting of hub body 23, and hub biography power key mounting hole 21 sets up on flange 24, and the brake disc still includes: spacer force transmission key 60; the spacer ring 50 is sleeved on the disc hub body 23, and the connecting claw 11 is positioned between the flange 24 and the spacer ring 50; wherein, at least one spacer force transmission key mounting groove 51 is arranged on the inner ring of the spacer 50, at least one spacer force transmission key mounting hole 25 is arranged on the disc hub body 23, the spacer force transmission key mounting hole 25 corresponds to the spacer force transmission key mounting groove 51, a first end of the spacer force transmission key 60 is arranged in the spacer force transmission key mounting groove 51 in a penetrating way, and a second end of the spacer force transmission key 60 is arranged in the spacer force transmission key mounting hole 25 in a penetrating way.
In this embodiment, the spacer 50 is pre-positioned with the hub 20 by the spacer force transmitting key 60.
Preferably, the spacer force-transmitting key 60 and the spacer force-transmitting key mounting groove 51 are both clearance fit to the spacer force-transmitting key mounting hole 25.
In order to connect the spacer 50 with the hub 20 and the disk body 10, as shown in fig. 5, a third mounting hole 52 is provided on the spacer 50, the third mounting hole 52 corresponds to the first mounting hole 111 and the second mounting hole 26, and the connecting member 40 is inserted into the second mounting hole 26, the first mounting hole 111 and the third mounting hole 52.
Preferably, the connecting piece 40 is in clearance fit with the third mounting hole 52, the minimum clearance value between the connecting piece 40 and the third mounting hole 52 is f, the maximum value between the spacer force transmission key 60 and the spacer force transmission key mounting groove 51 and between the spacer force transmission key 60 and the spacer force transmission key mounting hole 25 is g, wherein f is greater than g, d is greater than g, and f is greater than e.
In the present embodiment, the minimum clearance between the connecting member 40 and the third mounting hole 52 is f, and the maximum value of the clearance between the spacer force-transmitting key 60 and the spacer force-transmitting key mounting groove 51 and the clearance between the spacer force-transmitting key 60 and the spacer force-transmitting key mounting hole 25 is g. Through being provided with f and being greater than g, d is greater than g, and f is greater than e, and d is greater than e, can guarantee that connecting piece 40 connection inefficacy back, when disk 10 takes place the circumference deflection under the braking torque effect, laminating at first between each side of complex to avoid bolted connection directly to receive the shearing force effect.
Preferably, the central axes of the disc body 10 and the spacer 50 coincide, the first mounting hole 111 and the third mounting hole 52 are not coaxial, and the distance from the central axis of the spacer 50 to the central axis of the third mounting hole 52 is c, where a is smaller than c.
Preferably, the aperture of the first mounting hole 111 is larger than the aperture of the third mounting hole 52.
In view of the ease with which the hub force transfer key is to be withdrawn from the hub force transfer key mounting hole 21, as shown in fig. 2, at least one process hole 22 is provided in the hub 20, the process hole 22 being in communication with the hub force transfer key mounting hole 21, the process hole 22 being for withdrawing the hub force transfer key 30 from the hub force transfer key mounting hole 21.
In this embodiment, the disk body 10 includes two friction rings 13, and a plurality of heat dissipation ribs 14 connected between the two friction rings 13.
Preferably, the connection 40 is a bolt, and the brake disc further comprises: a nut 70, the nut 70 being disposed on the connection member 40, the nut 70 being used to fasten the spacer 50, the hub 20 and the disc 10; washer 80, washer 80 is sleeved on connector 40, washer 80 is located between nut 70 and spacer 50.
In this embodiment, the number of hub force transfer keys 30 and spacer force transfer keys 60 is equal, and is not less than 3.
In this embodiment, the side surfaces of the disc body force transfer groove 12 and the side surfaces of the disc hub force transfer key 30 and the spacer force transfer key 60 on the disc body 10 extend in the radial direction, and the direction of the side surface of the disc body force transfer groove 12 is identical to the direction of the side surface of the disc hub force transfer key 30 and the direction of the side surface of the spacer force transfer key 60.
The beneficial effects of the brake disc are that:
when the brake disc is in use, when the connection of the connecting piece 40 fails and the tightening force of the bolt connection cannot overcome the braking force, the disc body 10 rotates circumferentially, so that the side surfaces of the disc body force transmission grooves 12 are respectively attached to the side surfaces of the disc hub force transmission keys 30 arranged on the flange 24 of the disc hub 20 and the side surfaces of the space ring force transmission keys 60 arranged on the disc hub body 23. The hub force transfer key 30 is rotated circumferentially by the disc body to further transfer braking torque to the hub 20 through the hub force transfer key mounting hole 21, and the spacer force transfer key 60 is rotated circumferentially by the disc body to further transfer braking torque to the hub 20 through the spacer force transfer key mounting hole 25 to transfer all braking torque to the hub 20.
Because the connecting piece 40 passes through the corresponding second mounting hole 26, the first mounting hole 111 and the third mounting hole 52 in a loose fit manner, and the connecting claw 11 on the disc body 10 is guaranteed to rotate circumferentially through structural design and dimensional tolerance when the connecting piece 40 is in connection failure, and when the side surface of the disc body force transmission groove 12 is attached to the side surface of the disc hub force transmission key 30 and the side surface of the space ring force transmission key 60, the rod part of the connecting piece 40 is not contacted with the second mounting hole 26, the first mounting hole 111 and the third mounting hole 52, so that braking force is not transmitted to the connecting piece 40, and the rod part of the connecting piece 40 is not subjected to shearing force in the circumferential direction, so that effective protection on bolting is formed, and the reliability of bolting is improved.
In the invention, when the spacer is subjected to transverse loads such as impact, the structure of the spacer force transmission key 60 and the matching size design between the spacer force transmission key and the spacer force transmission key mounting groove 51 can prevent the spacer from generating excessive transverse displacement, so that the threaded connection of the bolt at the nut end is protected, and the threaded part is prevented from bearing excessive transverse bending loads.
When the disc 10 is subjected to a thermal load, since the side surfaces of the disc force transfer grooves 12 on the disc 10 and the side surfaces of the disc hub force transfer keys 30 and the spacer ring force transfer keys 60 extend radially, and the direction of the side surfaces of the disc force transfer grooves 12 is consistent with the direction of the side surfaces of the disc hub force transfer keys 30 and the direction of the side surfaces of the spacer ring force transfer keys 60, when the disc 10 is deformed by heating, the radial expansion direction of the connecting claws 11 is consistent with the direction of the side surfaces of the disc force transfer grooves 12, the side surfaces of the disc hub force transfer keys 30 and the side surfaces of the spacer ring force transfer keys 60, namely, the disc 10 slides radially outwards along the designed side surfaces of the disc force transfer grooves 12, the side surfaces of the disc hub force transfer keys 30 and the side surfaces of the spacer ring force transfer keys 60, but does not interfere with the disc hub 20 and the spacer ring 50, and the release of the radial expansion deformation is not restrained, so that additional stress effects are not generated on the disc hub 20, the spacer ring 50, the connecting pieces 40 and other connecting pieces.
Meanwhile, the diameter of the first mounting hole 111 of the disc 10 is slightly smaller than the diameter of the second mounting hole 26 of the disc hub 20 and the diameter of the third mounting hole 52 of the spacer 50, that is, the center line of the first mounting hole 111 is located at one side of the center line of the second mounting hole 26 of the disc hub 20 and the third mounting hole 52 of the spacer 50, which is closer to the center of the disc, and when the disc 10 is radially expanded and deformed, the first mounting hole 111 is radially expanded and deformed outwards, so that the working center of the disc 10 under the actual braking working condition is closer to the center of the second mounting hole 26 of the disc hub 20 and the center of the third mounting hole 52 of the spacer 50, and the gap between the rod part of the connecting piece 40 and the second mounting hole 26 and the third mounting hole 52 is larger, thereby further ensuring the safe application of the rod part of the connecting piece 40 under the working condition.
The brake disc device is positioned through the hub force transmission key 30 and the spacer ring force transmission key 60, so that the positioning and mounting of the disc body 10 and the spacer ring 50, the release of radial expansion deformation and the protection of circumferential braking torque are realized, the brake disc connection structure is compact, and the processing and the assembly are simple; through the design and the size matching of the disc hub force transmission key 30 and the space ring force transmission key 60, the bolt connection is ensured not to bear the action of shearing force when failure occurs, and the work is reliable and safe; considering that the hub force transmission key 30 is positioned at the hub flange side, a gap is reserved between the connecting claw and the hub flange, the small gap fit between the hub force transmission key 30 and the hub force transmission key mounting hole 21 on the hub flange 24 can possibly have rust in the long-term use process, and the design of the process hole 22 can facilitate the disassembly of the brake disc, and the overhaul and the disassembly maintenance are convenient.
The invention also provides a vehicle, which comprises the brake disc, wherein the brake disc is the brake disc.
From the above description, it can be seen that the above embodiments of the present invention achieve the following technical effects:
according to the brake disc, the disc body force transmission groove 12 is formed in the disc body 10, the disc hub 20 is provided with the disc hub force transmission key mounting hole 21, and the first end of the disc hub force transmission key 30 is arranged in the disc body force transmission groove 12 in a penetrating manner, and the second end of the disc hub force transmission key 30 is arranged in the disc hub force transmission key mounting hole 21 in a penetrating manner, so that preliminary positioning of the disc body 10 and the disc hub 20 is achieved. Wherein, be provided with a plurality of connection claws 11 on the inner circle of disk body 10, a plurality of connection claws 11 set up along the circumference interval of inner circle, form disk body biography power groove 12 between at least two adjacent connection claws 11. In the specific installation process, the disc body 10 and the disc hub 20 are oppositely arranged, the disc body force transmission groove 12 corresponds to the disc hub force transmission key installation hole 21, and the disc hub force transmission key 30 is inserted into the disc body force transmission groove 12 and the disc hub force transmission key installation hole 21, so that the preliminary positioning of the disc body 10 and the disc hub 20 is completed. The brake disc of the invention can complete the preliminary positioning of the disc body 10 and the disc hub 20 by inserting the disc hub force transmission key 30 into the disc body force transmission groove 12 and the disc hub force transmission key mounting hole 21, thereby solving the problem that the disc body and the disc hub positioning structure of the brake disc in the prior art are complex.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (15)
1. A brake disc comprising:
the novel disc comprises a disc body (10), wherein a plurality of connecting claws (11) are arranged on the inner ring of the disc body (10), the connecting claws (11) are arranged at intervals along the circumferential direction of the inner ring, and a disc body force transmission groove (12) is formed between at least two adjacent connecting claws (11);
the disc hub (20) is connected with the disc body (10), at least one disc hub force transmission key mounting hole (21) is formed in the disc hub (20), and the disc hub force transmission key mounting hole (21) corresponds to the disc body force transmission groove (12);
the disc hub force transmission key (30), a first end of the disc hub force transmission key (30) is arranged in the disc body force transmission groove (12) in a penetrating mode, and a second end of the disc hub force transmission key (30) is arranged in the disc hub force transmission key mounting hole (21) in a penetrating mode.
2. Brake disc according to claim 1, wherein the hub force transfer key (30) and the disc body force transfer groove (12) and the hub force transfer key mounting hole (21) are both clearance fit.
3. Brake disc according to claim 1, wherein a plurality of said connection claws (11) are evenly distributed along the circumference of said inner ring, wherein said disc body force transmission grooves (12) are a plurality of, and wherein a plurality of said disc body force transmission grooves (12) are evenly distributed.
4. A brake disc according to any one of claims 1 to 3, characterized in that the connecting claw (11) is a rectangular block and the disc body force transmission groove (12) is a rectangular groove.
5. Brake disc according to claim 1, wherein the connection claw (11) is provided with a first mounting hole (111), the hub (20) is provided with a second mounting hole (26) corresponding to the first mounting hole (111), the brake disc further comprising:
the connecting piece (40), connecting piece (40) wear to establish in first mounting hole (111) with in second mounting hole (26), connecting piece (40) with first mounting hole (111) with in second mounting hole (26) all clearance fit, connecting piece (40) with the clearance of first mounting hole (111) with the minimum of connecting piece (40) with the clearance of second mounting hole (26) is d, the clearance of disk hub biography power key (30) with disk body biography power groove (12) with the maximum value of the clearance of disk hub biography power key (30) with disk hub biography power key mounting hole (21) is e, wherein, d is greater than e.
6. Brake disc according to claim 5, wherein the central axes of the disc body (10) and the hub (20) coincide, the first mounting hole (111) and the second mounting hole (26) are not coaxial, the centre line of the first mounting hole is at a distance a from the central axis of the disc body (10), and the centre line of the second mounting hole (26) is at a distance b from the central axis of the hub (20), wherein a is smaller than b.
7. Brake disc according to claim 5, wherein the aperture of the first mounting hole (111) is larger than the aperture of the second mounting hole (26).
8. Brake disc according to claim 6, wherein the hub (20) comprises: hub body (23) and flange (24), flange (24) encircle the circumference lateral wall setting of hub body (23), hub biography power key mounting hole (21) set up on flange (24), the brake disc still includes:
a spacer force transmission key (60);
the spacer ring (50) is sleeved on the disc hub body (23), and the connecting claw (11) is positioned between the flange (24) and the spacer ring (50);
at least one spacer ring force transmission key mounting groove (51) is formed in the inner ring of the spacer ring (50), at least one spacer ring force transmission key mounting hole (25) is formed in the disc hub body (23), the spacer ring force transmission key mounting hole (25) corresponds to the spacer ring force transmission key mounting groove (51), the first end of the spacer ring force transmission key (60) is arranged in the spacer ring force transmission key mounting groove (51) in a penetrating mode, and the second end of the spacer ring force transmission key (60) is arranged in the spacer ring force transmission key mounting hole (25) in a penetrating mode.
9. Brake disc according to claim 8, wherein the spacer force transfer key (60) and the spacer force transfer key mounting groove (51) and the spacer force transfer key mounting hole (25) are both clearance fit.
10. Brake disc according to claim 9, wherein a third mounting hole (52) is provided in the spacer ring (50), the third mounting hole (52) corresponding to the first mounting hole (111) and the second mounting hole (26), and the connecting piece (40) is arranged in the second mounting hole (26), the first mounting hole (111) and the third mounting hole (52) in a penetrating manner.
11. Brake disc according to claim 10, wherein the connecting piece (40) is in clearance fit with the third mounting hole (52), the minimum clearance value of the connecting piece (40) with the third mounting hole (52) is f, the maximum value of the clearance of the spacer force transfer key (60) with the spacer force transfer key mounting groove (51) and the clearance of the spacer force transfer key (60) with the spacer force transfer key mounting hole (25) is g, wherein f is larger than g, d is larger than g, f is larger than e.
12. Brake disc according to claim 11, wherein the central axes of the disc body (10) and the spacer ring (50) coincide, the first mounting hole (111) and the third mounting hole (52) are not coaxial, the distance from the central axis of the third mounting hole (52) to the central axis of the spacer ring (50) is c, wherein a is smaller than c.
13. Brake disc according to claim 11 or 12, characterized in that the aperture of the first mounting hole (111) is larger than the aperture of the third mounting hole (52).
14. Brake disc according to claim 1, wherein the hub (20) is provided with at least one process hole (22), the process hole (22) being in communication with the hub force transfer key mounting hole (21), the process hole (22) being adapted to withdraw a hub force transfer key (30) from the hub force transfer key mounting hole (21).
15. A vehicle comprising a brake disc, characterized in that the brake disc is a brake disc according to any one of claims 1 to 14.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056087.4A CN107795612B (en) | 2017-10-31 | 2017-10-31 | Brake disc and vehicle with same |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711056087.4A CN107795612B (en) | 2017-10-31 | 2017-10-31 | Brake disc and vehicle with same |
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| Publication Number | Publication Date |
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| CN107795612A CN107795612A (en) | 2018-03-13 |
| CN107795612B true CN107795612B (en) | 2024-02-09 |
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| CN201711056087.4A Active CN107795612B (en) | 2017-10-31 | 2017-10-31 | Brake disc and vehicle with same |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873135A (en) * | 2018-09-03 | 2020-03-10 | 中车唐山机车车辆有限公司 | Micro-rail vehicle and electromagnetic brake thereof |
| WO2020139191A1 (en) * | 2018-12-28 | 2020-07-02 | Sunstar Singapore Pte., Ltd. | Brake disc |
| TWI830361B (en) * | 2022-09-02 | 2024-01-21 | 楊雨雯 | Brake disc |
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| CN207393812U (en) * | 2017-10-31 | 2018-05-22 | 常州中车铁马科技实业有限公司 | Brake disc and with its vehicle |
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| EP1375953A2 (en) * | 2002-06-12 | 2004-01-02 | Continental Teves AG & Co. oHG | Multi-part brake disc |
| CN105065515A (en) * | 2015-07-21 | 2015-11-18 | 青岛四方车辆研究所有限公司 | High-speed train shaft-mounted brake disc with slider structure |
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| CN107795612A (en) | 2018-03-13 |
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