High-temperature-resistant aluminum brake disc fastening connection pair

Abstract

The utility model discloses a high-temperature-resistant aluminum brake disc fastening connection pair which comprises a disc body I, a disc body II, a connection bolt, a sleeve I, a sleeve II and a lock nut. Compared with the prior art, the bolt is made of TC4 titanium alloy, it is guaranteed that the bolt has good tensile strength and anti-fatigue performance at the temperature of 400 DEG C, the nut is made of 7075-T6 aluminum alloy, the light weight is achieved on the premise that the strength is guaranteed, the sleeve I and the sleeve II have good elasticity and corrosion resistance, the design of threads on the outer wall of the bolt is matched, the tensile capacity and the anti-shearing capacity are improved, and the service life of the bolt is prolonged. And the stability and the safety of the aluminum brake disc system are ensured.

Description

Technical Field

[0001] This utility model relates to the field of brake disc technology, specifically to a high-temperature resistant aluminum brake disc fastening connection pair. Background Technology

[0002] Aluminum brake discs are brake discs made primarily of aluminum. Compared to traditional steel brake discs, aluminum brake discs have unique advantages and applications. First, aluminum brake discs are significantly lighter. Because aluminum's density is much lower than steel, aluminum brake discs are considerably lighter, which helps reduce the overall weight of the vehicle and thus improves energy efficiency. Second, aluminum brake discs exhibit excellent heat dissipation performance. Aluminum has better thermal conductivity than steel, so aluminum brake discs can more effectively dissipate the heat generated during braking, maintaining the stability of the braking system and reducing the risk of brake failure. However, aluminum and steel have different coefficients of thermal expansion. At high temperatures, this may cause bolts to loosen or preload to change. Frequent braking can lead to alternating stress, requiring optimized bolt design and material selection to improve fatigue strength and avoid insufficient or excessive preload affecting connection reliability. Utility Model Content

[0003] In view of the problems existing in the prior art, this utility model discloses a high-temperature resistant aluminum brake disc fastening connection pair, including disc body I, disc body II, connecting bolt, sleeve I, sleeve II, and anti-loosening nut; the disc body I and disc body II have countersunk holes in the center, the connecting bolt passes through sleeve I, disc body I, disc body II, and sleeve II in sequence and is then locked and fixed with anti-loosening nut, the top of the connecting bolt and the anti-loosening nut are located in the countersunk holes of disc body I and disc body II; the main body of the connecting bolt is a hollow section, its outer wall is provided with deformed threads, one side of the hollow section is a smooth rod section, the other side of the smooth rod section is a flange face and a recessed hexagonal head in sequence, and an inner groove is provided at the connection between the flange face and the smooth rod section; both ends of sleeve I and sleeve II are provided with sleeve anti-loosening teeth, and the center of the outer wall is recessed inward to form a groove; one end face of the anti-loosening nut is provided with nut anti-loosening teeth, and the other side is provided with an anti-loosening tooth ring inside.

[0004] As a preferred technical solution of this utility model, the connecting bolt is made of TC4 titanium alloy and the deformed thread is a 30° wedge-shaped deformed thread.

[0005] As a preferred technical solution of this utility model, the anti-loosening nut is made of 7075-T6 aluminum alloy, the angle between its tooth surface and the horizontal plane does not exceed 10°, and the anti-loosening tooth ring is a metal ring with internal thread.

[0006] As a preferred technical solution of this utility model, the sleeve I and sleeve II are made of carbon fiber or molded with PEEK.

[0007] The beneficial effects of this utility model are as follows: The bolt of this utility model is made of TC4 titanium alloy, which ensures that it has good tensile strength and fatigue resistance at 400℃. The nut is made of 7075-T6 aluminum alloy to achieve lightweight while ensuring strength. Sleeve I and sleeve II have good elasticity and corrosion resistance. Combined with the thread design on the outer wall of the bolt, the tensile and shear resistance is improved, ensuring the stability and safety of the aluminum brake disc system. Attached Figure Description

[0008] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0009] Figure 1 This is a cross-sectional view of the present invention;

[0010] Figure 2 This is a front view of the connecting bolt of this utility model;

[0011] Figure 3 This is a sectional view of the sleeve of this utility model;

[0012] Figure 4 This is a cross-sectional view of the anti-loosening nut of this utility model;

[0013] In the diagram: Disc I1, Disc II2, Connecting Bolt 3, Recessed Hex Head 31, Flange Face 32, Smooth Rod Section 33, Hollow Section 34, Deformed Thread 35, Sleeve I4, Sleeve Anti-Loosening Tooth 41, Groove 42, Sleeve II5, Anti-Loosening Nut 6, Anti-Loosening Tooth Ring 61, Nut Anti-Loosening Tooth 62. Detailed Implementation

[0014] Example 1

[0015] like Figures 1 to 4 As shown, this utility model discloses a high-temperature resistant aluminum brake disc fastening connection pair, including disc body I1, disc body II2, connecting bolt 3, sleeve I4, sleeve II5, and anti-loosening nut 6; the disc body I1 and disc body II2 have countersunk holes in the center, and the connecting bolt 3 passes through the sleeve in sequence.

[0016] I4, disc body I1, disc body II2, and sleeve II5 are secured with anti-loosening nuts 6. The top of the connecting bolt 3 and the anti-loosening nut 6 are located in the countersunk holes of disc body I and disc body II. The main body of the connecting bolt 3 is a hollow section 34, and its outer wall is provided with deformable threads 35. One side of the hollow section 34 is a smooth rod section.

[0017] 33. On the other side of the polished rod section 33, there is a flange face 32 and a recessed hexagonal head 31. The flange face 32 and the polished rod section 33 are connected by an inner groove 36. Both ends of the sleeve I4 and sleeve II5 are provided with sleeve anti-loosening teeth 41, and the outer wall is recessed inward to form a groove 42. The anti-loosening nut 6 is provided with nut anti-loosening teeth 62 on one end face and anti-loosening tooth ring 61 inside the other side. The connecting bolt 3 is made of TC4 titanium alloy to ensure good tensile strength and fatigue resistance at 400℃. The anti-loosening nut 6 is made of 7075-T6 aluminum alloy to achieve lightweight while ensuring strength. The sleeve I4 and sleeve II5 have good elasticity and corrosion resistance. Combined with the thread design on the outer wall of the bolt, the tensile and shear resistance is improved to ensure the stability and safety of the aluminum brake disc system.

[0018] Sleeve I4 is a long sleeve, and sleeve II5 is a short sleeve. Sleeve I4 is in contact with the support surface of the recessed hexagonal head 31, and sleeve II5 is in contact with the anti-loosening nut 6. The anti-loosening teeth 62 and sleeve anti-loosening teeth 41 are used to prevent loosening. The anti-loosening tooth ring 61 is connected to the connecting bolt 3 to prevent loosening. Sleeve I4 is in contact with the disc body I1, and sleeve II5 is in contact with the disc body II2 to strengthen the fastening and avoid premature loosening of the connection pair in the continuous vibration service environment.

[0019] Components not described in detail in this article are existing technologies, and the connections and controls of each motor are all technical means commonly used by those skilled in the art, so they will not be described in detail here.

[0020] While the specific embodiments of this utility model have been described in detail above, this utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this utility model. Modifications or variations that do not involve creative labor are still within the protection scope of this utility model.

Claims

1. A high-temperature resistant aluminum brake disc fastening connection pair, characterized in that: The components include a disc body I (1), a disc body II (2), a connecting bolt (3), a sleeve I (4), a sleeve II (5), and a lock nut (6). The disc body I (1) and disc body II (2) have countersunk holes in their centers. The connecting bolt (3) passes sequentially through the disc body I (1), sleeve I (4), disc body II (2), and sleeve II (5) before being secured with the lock nut (6). The top of the connecting bolt (3) and the lock nut (6) are located on the disc body I (1) and disc body II. (2) Inside the countersunk hole; the main body of the connecting bolt (3) is a hollow section (34), and its outer wall is provided with deformed threads (35). One side of the hollow section (34) is a smooth rod section (33), and the other side of the smooth rod section (33) is a flange face (32) and a recessed hexagonal head (31). The flange face (32) and the smooth rod section (33) are connected with an inner groove (36); both ends of the sleeve I (4) and sleeve II (5) are provided with sleeve anti-loosening teeth (41), and the center of the outer wall is recessed inward to form a groove (42); one end face of the anti-loosening nut (6) is provided with nut anti-loosening teeth (62), and the other side is provided with an anti-loosening tooth ring (61).

2. The high-temperature resistant aluminum brake disc fastening connection pair according to claim 1, characterized in that: The connecting bolt (3) is made of TC4 titanium alloy, and the deformed thread (35) is a 30° wedge-shaped deformed thread.

3. The high-temperature resistant aluminum brake disc fastening connection pair according to claim 1, characterized in that: The anti-loosening nut (6) is made of 7075-T6 aluminum alloy, and the angle between its tooth surface and the horizontal plane does not exceed 10°. The anti-loosening tooth ring (61) is a metal ring with internal thread.

4. The high-temperature resistant aluminum brake disc fastening connection pair according to claim 1, characterized in that: The sleeves I (4) and II (5) are made of carbon fiber or molded with PEEK.

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