CN115899126A - Brake disc with double-air-duct structure - Google Patents
Brake disc with double-air-duct structure Download PDFInfo
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- CN115899126A CN115899126A CN202310171334.4A CN202310171334A CN115899126A CN 115899126 A CN115899126 A CN 115899126A CN 202310171334 A CN202310171334 A CN 202310171334A CN 115899126 A CN115899126 A CN 115899126A
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- ring
- arc
- brake disc
- friction
- air
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- 230000017525 heat dissipation Effects 0.000 claims abstract description 17
- 230000002093 peripheral effect Effects 0.000 claims abstract description 4
- 230000009977 dual effect Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 12
- 238000009434 installation Methods 0.000 description 7
- 238000005562 fading Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Abstract
The invention discloses a brake disc with a double-air-duct structure, which relates to the technical field of brake discs and comprises a central ring, two friction discs and a double-air-duct heat dissipation assembly, wherein a hub is arranged at the end part of the central ring; the two friction disks are coaxially fixed on the center ring, one of the friction disks is flush with one end of the center ring, which is far away from the hub, a gap is formed between the two friction disks, and the side walls of the friction disks are provided with a plurality of through holes so that the inside air and the outside air of the friction disks are communicated; the double-air-channel heat dissipation assembly comprises a mounting ring and a bearing, an inner ring of the bearing is fixedly sleeved on the center ring, the mounting ring is fixedly sleeved on an outer ring of the bearing and is not in contact with the two friction disks, and an arc-shaped sheet extending outwards is arranged on the outer peripheral surface of the mounting ring. When the emergency brake of the vehicle is carried out, the mounting ring and the arc-shaped piece are maintained to rotate at a high speed through the inertia effect, and centrifugal airflow is generated, so that the brake disc keeps efficient heat dissipation.
Description
Technical Field
The invention relates to the technical field of brake discs, in particular to a brake disc with a double-air-duct structure.
Background
For efficient operation of the vehicle, a braking system is essential. Brakes come in many different forms, for example, disc brakes, drum brakes, etc. The most common brake in today's vehicles is the disc brake, which, after a braking action by the driver, acts on the brake disc to brake.
A typical brake disc includes a friction portion that generates a braking force by friction with a friction member and a hub that connects the brake disc to a vehicle body. However, heat dissipation of the brake disc is particularly important because a large amount of frictional heat is generated at the frictional surface during a braking operation, and thermal expansion or thermal deformation may occur at a local frictional portion, resulting in heat fading to reduce braking force.
Through retrieval, chinese patent application No. CN109654136B discloses a ventilated brake disc, chinese patent application No. CN101743410B discloses a ventilated brake disc, and chinese patent application No. CN107859704B discloses an internal ventilated brake disc, which both achieve ventilation effect by forming perforations or air guide grooves on the brake disc, so as to improve the heat dissipation performance of the brake disc, but in the above solutions, air can be circulated and dissipated by centrifugal force generated by the brake disc along with the rapid rotation of the vehicle during running, when the vehicle is driven to perform emergency braking, the vehicle speed is rapidly reduced, and the brake disc is rapidly heated, because the brake disc rotates synchronously with the wheels, the rotation speed of the brake disc is also reduced after the vehicle speed is reduced, and the brake disc rotating at low speed is difficult to generate enough centrifugal force to flow air, so that the brake disc cannot perform effective heat dissipation during emergency braking, and the brake disc can generate heat fading due to high temperature, so that the braking force is reduced, and there is a safety hazard.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, the rotating speed of a brake disc is reduced along with the reduction of the vehicle speed during emergency braking, heat dissipation cannot be rapidly carried out under the condition of low rotating speed, and the braking force is reduced due to heat fading.
In order to achieve the purpose, the invention adopts the following technical scheme:
a brake disc having a dual air passage structure, comprising:
the end part of the central ring is provided with a hub, and the hub and the central ring are integrally forged and formed;
the two friction discs are coaxially fixed on the center ring, one of the friction discs is flush with one end, away from the hub, of the center ring, a gap exists between the two friction discs, and the side wall of each friction disc is provided with a plurality of through holes so that the inside and the outside of each friction disc are communicated with each other;
double-air-duct heat dissipation assembly, including collar and bearing, the fixed cover of inner ring of bearing is located on the centre ring, the collar is fixed to be overlapped and is located on the outer loop of bearing, the collar is located two between the friction disk and do not contact with the friction disk the outer peripheral face of collar is provided with the arc piece of outside extension, the fixed branch spacer that is provided with on the collar, will the arc piece is equally divided along the axial, with two air duct structures about the branch spacer forms as the border.
Preferably, the bearing is a one-way bearing, so that the mounting ring can only rotate in the forward direction of the vehicle.
Preferably, the arc-shaped piece comprises a first arc-shaped surface used as a windward surface and a second arc-shaped surface used as a leeward surface, wherein the first arc-shaped surface is a convex surface, and the second arc-shaped surface is a concave surface.
Preferably, a plurality of supporting blocks are arranged between the two friction disks, and the supporting blocks are distributed at the outer edges of the friction disks at equal intervals.
Preferably, the outer end face of the arc-shaped piece does not exceed one side of the supporting block close to the circle center of the friction disc.
Preferably, the separating plate is coaxially provided with a counterweight wheel ring, and the counterweight wheel ring is positioned at the outer edge of the separating plate.
Preferably, the connecting part of the separating plate and the counterweight wheel ring is provided with a chamfer.
Compared with the prior art, the invention has the following advantages:
according to the invention, the installation ring is arranged, the arc sheet which enables air to do centrifugal motion during rotation is arranged on the installation ring, and the installation ring can only rotate towards the advancing direction of a vehicle through the one-way bearing arranged between the installation ring and the center ring, so that the installation ring can be normally driven to drive the arc sheet to normally rotate during vehicle running, and when the vehicle is emergently braked, after the rotation speed of the brake disc is reduced, the counter weight wheel ring positioned at the outer edge of the partition plate maintains the high-speed rotation of the installation ring and the arc sheet under the inertia effect, centrifugal airflow is generated, the brake disc keeps high-efficiency heat dissipation, the reduction of the brake force of the brake disc due to heat fading is reduced, the problems that the rotation speed of the brake disc is reduced along with the reduction of the vehicle speed during emergency braking, the heat dissipation can not be rapidly carried out under the condition of low rotation speed, the reduction of the brake force due to the heat fading is caused are solved, the normal operation of a vehicle brake system is ensured, and the running safety is improved.
Drawings
Fig. 1 is a schematic structural diagram of an appearance of a brake disc with a double-air-duct structure according to the present invention;
fig. 2 is a schematic structural diagram of an appearance of a brake disc with a double-air-duct structure according to the present invention;
fig. 3 is a schematic side view of a brake disc with a dual air duct structure according to the present invention;
FIG. 4 is a schematic cross-sectional view of a brake disc with a dual air duct structure according to the present invention;
fig. 5 is a schematic structural diagram of a dual-duct heat dissipation assembly in a brake disc with a dual-duct structure according to the present invention;
fig. 6 is a schematic cross-sectional view of a brake disc with a dual air duct structure according to the present invention.
In the figure: 1. a center ring; 11. a hub; 2. a friction disk; 21. perforating; 22. a supporting block; 3. a dual duct heat sink assembly; 31. a mounting ring; 32. a separator; 33. an arc-shaped sheet; 331. a first arc surface; 332. a second arc surface; 34. a bearing; 35. a counterweight wheel ring; 36. and (7) chamfering.
Description of the preferred embodiment
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Referring to fig. 1-4, a brake disc with a double-air-duct structure includes a center ring 1, a double-air-duct heat dissipation assembly 3, and two friction discs 2, wherein a hub 11 is disposed at an end of the center ring 1, the hub 11 and the center ring 1 are integrally forged, and a mounting hole is disposed on a sidewall of the hub 11 and used for connecting the brake disc with a vehicle.
The two friction discs 2 are coaxially fixed on the center ring 1, the friction discs 2 are fixed in a welding mode, so that the friction discs 2 and the center ring 1 have high tensile strength, one end, far away from the hub 11, of one of the friction discs 2 and the center ring 1 is flush with one end, far away from the hub 11, of the center ring 1, one end, connected with the hub 11, of the center ring 1 protrudes outwards, and the installation of the brake discs on a vehicle driving shaft body is facilitated.
A gap exists between the two friction discs 2, the side walls of the friction discs 2 are provided with a plurality of through holes 21, so that the air inside and outside the friction discs 2 is communicated, when the air in the gap between the two friction discs 2 is centrifugally thrown out, the air pressure of the gap between the two friction discs 2 is reduced, at the moment, under the action of the atmospheric pressure, the air enters the gap through the through holes 21, the flowing of the air is realized, the flowing air can quickly drive the heat on the surfaces of the friction discs 2, and the heat radiation performance of the friction discs 2 is ensured.
Referring to fig. 4-5, the dual-duct heat dissipating assembly 3 includes a mounting ring 31 and a bearing 34, an inner ring of the bearing 34 is fixedly sleeved on the center ring 1, the mounting ring 31 is fixedly sleeved on an outer ring of the bearing 34, the mounting ring 31 is located between the two friction disks 2, the mounting ring 31 is centrally installed and does not contact with side walls of the two friction disks 2, so that the mounting ring 31 does not rub against the friction disks 2, the bearing 34 is a one-way bearing, so that the mounting ring 31 can only rotate in a forward direction of the vehicle, during the forward movement of the vehicle, due to an inertia effect of the mounting ring 31, the mounting ring 31 tends to maintain an original state, so that when the center ring 1 rotates forward as the vehicle moves forward, a relative rotation between the mounting ring 31 and the center ring 1 is reversed, the inner ring of the bearing 34 is fixed on the center ring 1, and the outer ring of the bearing 34 is fixed to the mounting ring 31, under the action of the one-way locking of the bearing 34, the mounting ring 31 rotates along with the center ring 1, the arc-shaped piece 33 extending outwards is arranged on the outer peripheral surface of the mounting ring 31, when the mounting ring 31 rotates, the arc-shaped piece 33 is driven to rotate around the axis of the mounting ring 31, air between the two friction discs 2 is thrown outwards in a centrifugal motion mode during the rotation process of the arc-shaped piece 33, the air pressure of a gap between the two friction discs 2 is reduced, at the moment, under the action of the atmospheric pressure, the air enters the gap through the through holes 21, the flow of the air is promoted, the flowing air drives heat on the surfaces of the friction discs 2 through the surfaces of the friction discs 2, the heat dissipation effect is achieved, the risk that the braking force is reduced due to the fact that the friction discs 2 are degraded due to high-yield of temperature is reduced, the normal operation of a vehicle braking system is ensured, and the driving safety is improved.
Referring to fig. 6, during emergency braking of a vehicle, the vehicle is decelerated by friction force generated by a friction member clamping a friction disc 2, at this time, a large amount of heat is generated in a process of being rubbed by the friction disc 2, and the rotating speed of a center ring 1 is reduced along with reduction of the vehicle speed, in the prior art, since the brake disc is integrally arranged, after the rotation of the brake disc is reduced, a centrifugal force thrown out by driving air is also reduced, and an air flow rate is reduced, so that a heat dissipation effect is not good naturally, and therefore, a phenomenon of heat fading may occur in a vehicle braking system, which affects safety of a driver, the brake disc is provided with a bearing 34 and is a one-way bearing, during acceleration and uniform speed running of the vehicle, the center ring 1 may normally drive a mounting ring 31 to rotate, during emergency braking of the vehicle, the mounting ring 31 needs to maintain an original state under an inertia effect, a direction in which the mounting ring 31 and the center ring 1 relatively rotate is a vehicle forward direction, the bearing 34 may also play a role of reducing resistance, so that the mounting ring 31 keeps rotating at a high speed, and after the emergency braking, the mounting ring 31 still drives an arc plate 33 to rotate at a high speed, and a high-speed of the brake disc, and a high-speed cooling gas flow is ensured, and a high-efficiency brake system can still operates under a high-efficiency brake condition of the brake of the vehicle can be realized.
The mounting ring 31 is fixedly provided with a separating plate 32, the separating plate 32 is centrally arranged on the mounting ring 31, the centrally arranged separating plate 32 enables the mounting ring 31 to keep stable when rotating, the separating plate 32 divides the arc-shaped plate 33 into equal halves along the axial direction, a left air channel structure and a right air channel structure are formed by taking the separating plate 32 as a boundary, and air flow conveying and flowing are respectively carried out on two sides of the separating plate 32, so that air inflow of the through holes 21 on the two friction discs 2 is more uniform.
Referring to fig. 5-6, the spacer 32 is coaxially provided with a counterweight wheel ring 35, the counterweight wheel ring 35 is arranged to increase the load weight of the mounting ring 31, so that the overall inertia of the mounting ring 31, the arc-shaped plate 33 and the counterweight wheel ring 35 is improved, when the brake disc suddenly stops at a high rotating speed to a low rotating speed, the mounting ring 31 and the arc-shaped plate 33 can keep rotating at a high speed under the action of inertia, and the counterweight wheel ring 35 is located at the outer edge of the spacer 32, so that the vertical distance between the mass point of the counterweight wheel ring 35 and the rotating axis is farther, the moment is larger during rotation, and the rotating effect generated by inertia is better.
The above process involves a moment of inertia I:
i = mr (where m is its mass and r is the perpendicular distance of the particle and the rotation axis);
the moment of inertia is a measure of the inertia of a rigid body when rotating around an axis, the role of the moment of inertia in the rotation dynamics is equivalent to the mass in the linear dynamics, and can be understood in the form of the inertia of an object to the rotation motion, and is used for establishing the relationship between the angular momentum, the angular velocity, the moment, the angular acceleration and other quantities, the quantity of which depends on the shape, the mass distribution and the position of the rotating shaft of the object, the arrangement of the counterweight wheel ring 35 increases the mass, and the integral mass center is far away from the rotating axis of the mounting ring 31, so that the mounting ring 31 can keep rotating at a high speed by inertia.
Referring to fig. 5, the arc piece 33 includes a first arc surface 331 serving as a windward surface and a second arc surface 332 serving as a leeward surface, the first arc surface 331 is a convex surface, the second arc surface 332 is a concave surface, when the air rotates, the air is impacted by the arc piece 33 to generate centrifugal force, and the air flow flows along the first arc surface 331, because the first arc surface 331 is a convex surface serving as a windward surface, the air flow does not converge but flows along the first arc surface 331 toward the outer edge, so that the air flow circulates rapidly, and the second arc surface 332 is a concave surface which can be fitted with the first arc surface 331, so that the arc piece 33 is in a sheet shape, a large space is conveniently formed between two adjacent arc pieces 33, and the circulation of the air flow can be accelerated.
Referring to fig. 4-5, the chamfer 36 is provided at the joint of the separator 32 and the weight wheel ring 35, and since the air flow needs to be discharged between the weight wheel ring 35 and the friction disc 2, the thickness of the weight wheel ring 35 is greater than that of the separator 32, the air flow will collide with the joint of the weight wheel ring 35 and the separator 32, and by providing the chamfer 36, the air flow can be smoothly discharged, the formation of turbulence is reduced, and the air flow circulation efficiency is improved.
Referring to fig. 3, a plurality of supporting blocks 22 are arranged between the two friction discs 2, the supporting blocks 22 are equidistantly distributed on the outer edges of the friction discs 2, and during braking, the external friction members clamp the friction discs 2 and apply opposite forces to the friction discs 2, so that the supporting blocks 22 can improve the supporting strength of the two friction discs 2 and reduce the risk of deformation of the friction discs 2.
Referring to fig. 6, the outer end surface of the arc piece 33 does not exceed one side of the supporting block 22 close to the center of the friction disc 2, so that interference between the arc piece 33 and the supporting block 22 when the arc piece 33 rotates is prevented, and the arc piece 33 is prevented from contacting and colliding with the supporting block 22.
The specific working principle of the invention is as follows:
the brake disc is arranged on a front wheel shaft and a rear wheel shaft of a vehicle, the vehicle runs at a constant speed, the mounting ring 31 tends to keep the original state due to the inertia effect of the mounting ring 31, the mounting ring 31 rotates along with the center ring 1 under the action of one-way locking of the bearing 34, the arc-shaped sheet 33 can enable air between the two friction discs 2 to be centrifugally thrown out in the rotating process, the air pressure of a gap between the two friction discs 2 is reduced, at the moment, the air enters the gap through the through holes 21 under the action of the atmospheric pressure, the air flow is promoted, the flowing air can drive heat on the surfaces of the friction discs 2 through the surfaces of the friction discs 2, and the heat dissipation effect is achieved.
When the vehicle emergency brake, along with the rotational speed reduction of centre ring 1, collar 31 still need keep original state under inertial effect, collar 31 and the relative pivoted direction of centre ring 1 are vehicle advancing direction, bearing 34 can also play the effect of reducing the resistance, make collar 31 keep high-speed the rotation, after this brake disc slows down, collar 31 still drives arc piece 33 and keeps high-speed the rotation, drive gas flows and cools down, guarantee still can realize high-efficient heat dissipation under the condition of emergency brake, guarantee vehicle braking system's normal operating.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered as the technical solutions and the inventive concepts of the present invention within the technical scope of the present invention.
Claims (7)
1. A brake disc having a dual air passage structure, comprising:
the center ring (1), the end of the center ring (1) is provided with a hub (11), and the hub (11) and the center ring (1) are integrally forged and formed;
the friction discs (2) are coaxially fixed on the center ring (1), one of the friction discs (2) is flush with one end, far away from the hub (11), of the center ring (1), a gap is reserved between the two friction discs (2), and a plurality of through holes (21) are formed in the side wall of each friction disc (2) to enable the inside air and the outside air of each friction disc (2) to be communicated;
double-air-duct heat dissipation assembly (3) comprises a mounting ring (31) and a bearing (34), the fixed cover of inner ring of bearing (34) is arranged on center ring (1), the fixed cover of mounting ring (31) is arranged on the outer ring of bearing (34), mounting ring (31) is located two between friction disc (2) and not contact with friction disc (2) the outer peripheral face of mounting ring (31) is provided with arc piece (33) of outside extension, fixed spacing piece (32) that is provided with on mounting ring (31), will arc piece (33) are equally divided along the axial, with spacing piece (32) are two wind channel structures about forming for the border.
2. A brake disc with a double air duct structure according to claim 1, wherein the bearing (34) is a one-way bearing, so that the mounting ring (31) can only rotate in the forward direction of the vehicle.
3. A brake disc with a double air duct structure according to claim 1, wherein the arc-shaped segment (33) comprises a first arc-shaped surface (331) for the windward side and a second arc-shaped surface (332) for the leeward side, the first arc-shaped surface (331) being a convex surface and the second arc-shaped surface (332) being a concave surface.
4. A brake disc with a double air duct structure according to claim 1, wherein a plurality of support blocks (22) are provided between two friction discs (2), and a plurality of support blocks (22) are equally distributed on the outer edge of the friction discs (2).
5. The brake disc with the double air duct structure as claimed in claim 4, wherein the outer end face of the arc-shaped piece (33) does not exceed one side of the support block (22) near the center of the friction disc (2).
6. Brake disc with double air duct structure according to claim 1, characterized in that the separator plate (32) is coaxially provided with a weighted wheel ring (35), the weighted wheel ring (35) being located at the outer edge of the separator plate (32).
7. Brake disc with double air duct structure according to claim 6, characterized in that the junction of the separator plate (32) and the counterweight wheel ring (35) is provided with a chamfer (36).
Priority Applications (1)
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CN202310171334.4A CN115899126A (en) | 2023-02-28 | 2023-02-28 | Brake disc with double-air-duct structure |
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CN202310171334.4A CN115899126A (en) | 2023-02-28 | 2023-02-28 | Brake disc with double-air-duct structure |
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CN202310171334.4A Pending CN115899126A (en) | 2023-02-28 | 2023-02-28 | Brake disc with double-air-duct structure |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117072593A (en) * | 2023-10-16 | 2023-11-17 | 浙江三京汽配制造有限公司 | Automobile brake disc with heat dissipation function |
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CN207261519U (en) * | 2017-08-04 | 2018-04-20 | 合肥元丰汽车制动系统有限公司 | A kind of automobile brake disc |
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CN208778545U (en) * | 2018-08-07 | 2019-04-23 | 南京布雷尔汽车配件有限公司 | A kind of high heat dissipation effect brake disc |
CN209458321U (en) * | 2019-01-14 | 2019-10-01 | 黑龙江省瑞相制动装备有限责任公司 | A kind of brake disk of bullet train rapid cooling |
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CN112178087A (en) * | 2020-11-30 | 2021-01-05 | 烟台美丰机械有限公司 | Assembled brake disc subassembly based on air cooling system |
CN216922965U (en) * | 2022-03-25 | 2022-07-08 | 浙江力邦合信智能制动系统股份有限公司 | Double-air-channel brake disc |
CN217081207U (en) * | 2022-04-08 | 2022-07-29 | 山东千力机械股份有限公司 | Novel ventilation brake disc |
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2023
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CN204458937U (en) * | 2015-03-06 | 2015-07-08 | 王桠楠 | A kind of automobile brake disc |
CN207261519U (en) * | 2017-08-04 | 2018-04-20 | 合肥元丰汽车制动系统有限公司 | A kind of automobile brake disc |
CN208364647U (en) * | 2018-06-15 | 2019-01-11 | 汶上海纬机车配件有限公司 | A kind of concentration power train wheel is brake disk mounted |
CN208778545U (en) * | 2018-08-07 | 2019-04-23 | 南京布雷尔汽车配件有限公司 | A kind of high heat dissipation effect brake disc |
CN209458321U (en) * | 2019-01-14 | 2019-10-01 | 黑龙江省瑞相制动装备有限责任公司 | A kind of brake disk of bullet train rapid cooling |
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CN112178087A (en) * | 2020-11-30 | 2021-01-05 | 烟台美丰机械有限公司 | Assembled brake disc subassembly based on air cooling system |
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CN217081207U (en) * | 2022-04-08 | 2022-07-29 | 山东千力机械股份有限公司 | Novel ventilation brake disc |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
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CN117072593A (en) * | 2023-10-16 | 2023-11-17 | 浙江三京汽配制造有限公司 | Automobile brake disc with heat dissipation function |
CN117072593B (en) * | 2023-10-16 | 2024-02-09 | 浙江三京汽配制造有限公司 | Automobile brake disc with heat dissipation function |
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Application publication date: 20230404 |
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