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.
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.