Brake drum with good heat dissipation performance

Abstract

The utility model relates to a brake drum with good heat dissipation performance, which comprises a brake drum body and is technically characterized in that a plurality of annular grooves are axially arranged on the peripheral surface of the brake drum body at intervals, the cross section of each annular groove is T-shaped, the bottom of each annular groove is arc-shaped, a split type annular hollow pipe is pre-buried at the lower part of each annular groove, and the split type annular hollow pipe is connected with the brake drum body. A split type annular gland pressed on the top face of the split type annular hollow pipe is arranged on the upper portion of the annular groove, a plurality of radial through holes are evenly formed in the peripheral face of the split type annular hollow pipe, and a plurality of radial through openings communicated with the split type annular hollow pipe are formed in the top face of the split type annular gland. Under the condition that the heat dissipation effect is guaranteed, the production and assembly efficiency is remarkably improved, and the use intensity is high.

Description

Technical Field

[0001] The utility model relates to vehicle brake assembly parts, in particular to a brake drum with good heat dissipation performance. Background Art

[0002] The brake drum is a device fixed to the wheel hub that works with the brake caliper to achieve braking, and is a key component in the brake assembly. Currently, commonly used brake drums are made from pure castings. During actual vehicle operation, brake drums are used very frequently. When a vehicle brakes downhill for extended periods while heavily loaded, the brake surface generates significant heat and braking force. This can easily crack along the braking surface and cause deformation of the drum. This shortens the drum's service life and creates a large gap between the brake pads and the braking surface during braking, resulting in ineffective braking and compromised vehicle and driver safety.

[0003] CN 214742916 U discloses a brake drum with excellent heat dissipation performance. The brake drum comprises a brake drum body, a braking portion disposed within the brake drum body, a mounting portion disposed at one end of the braking portion, a threaded hole disposed on the outer side of the mounting portion, an anti-cracking assembly disposed within the brake drum body, and a heat dissipation assembly disposed on the outer wall of the brake drum body. The brake drum is intended to improve the structural strength of the brake drum body by providing the anti-cracking assembly, and to enhance the heat dissipation capacity of the brake drum by providing the heat dissipation assembly. However, the following problems exist during use: 1. Production and assembly are complex; 2. The heat dissipation assembly is located on the outer periphery of the brake drum body, leaving room for improvement in heat conduction efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a brake drum with a reasonable structure, reliable use and good heat dissipation performance to solve the above problems, which significantly improves the production and assembly efficiency and has high use strength while ensuring the heat dissipation effect.

[0005] The technical solution of the utility model is:

[0006] A brake drum with good heat dissipation performance includes a brake drum body. Its technical points are: the outer peripheral surface of the brake drum body is provided with a plurality of annular grooves at intervals along the axial direction, the cross-section of the annular groove is T-shaped and the groove bottom is arc-shaped, a split annular hollow tube is pre-buried in the lower part of the annular groove, and a split annular pressure cover is provided on the upper part of the annular groove to be pressed on the top surface of the split annular hollow tube, the outer peripheral surface of the split annular hollow tube is evenly provided with a plurality of radial through holes, and the top surface of the split annular pressure cover is provided with a plurality of radial openings connected to the split annular hollow tube.

[0007] In the above-mentioned brake drum with good heat dissipation performance, the split annular hollow tube is composed of two semi-annular hollow tubes.

[0008] The above-mentioned brake drum with good heat dissipation performance, the split annular gland consists of two semi-annular glands, the cross section of the semi-annular gland is T-shaped, and the lower end thereof is provided with an arc concave surface matching the split annular hollow tube.

[0009] In the above-mentioned brake drum with good heat dissipation performance, the outer peripheral surface of the split annular hollow tube is provided with a heat-conducting coating.

[0010] The beneficial effects of the utility model are:

[0011] 1. On the one hand, the split annular hollow tube and the split annular gland are used to enhance the service strength of the brake drum body. On the other hand, the split annular hollow tube and the split annular gland are used to conduct the heat generated inside the brake drum body to the outside, which significantly improves the heat dissipation efficiency and has a good heat dissipation effect.

[0012] 2. The split annular hollow tube and the split annular gland are easy to assemble with the brake drum body, significantly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 yes Figure 1 Middle AA section;

[0015] Figure 3 yes Figure 2 This is an enlarged view of part B. DETAILED DESCRIPTION

[0016] The utility model is described in detail according to the accompanying drawings.

[0017] like Figures 1 to 3 The brake drum, which offers excellent heat dissipation, comprises a brake drum body 1. Five annular grooves are axially spaced along the outer circumference of the body 1. Each annular groove has a T-shaped cross section and an arc-shaped bottom. A split annular hollow tube 3 is embedded in its lower portion. A split annular gland 2 is positioned above the annular groove, pressing against the top surface of the split annular hollow tube 3. Multiple radial through-holes 5 are evenly distributed along the outer circumference of the split annular hollow tube 3. The top surface of the split annular gland 2 is provided with multiple radial openings 4 that communicate with the split annular hollow tube 3.

[0018] In this embodiment, the split annular hollow tube 3 is composed of two semi-annular hollow tubes 301. The outer circumference of the split annular hollow tube 3 is provided with a thermally conductive coating. The split annular gland 2 is composed of two semi-annular glands 201. The semi-annular glands 201 have a T-shaped cross-section and a circular arc concave surface at their lower ends that matches the split annular hollow tube 3.

[0019] Working principle:

[0020] During use, the two semi-annular hollow tubes 301 of the split annular hollow tube 3 are first placed in corresponding annular grooves and then welded together. The two semi-annular glands 201 of the split annular gland 2 are then placed in corresponding annular grooves and welded together to form a single split annular gland 2, which is then pressed against the outside of the split annular hollow tube 3 and welded to the brake drum body 1.

[0021] The above detailed description of the embodiments of the present invention is intended to be a preferred embodiment of the present invention and should not be construed as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the present invention shall still fall within the scope of this patent.

Claims

1. A brake drum with good heat dissipation performance, comprising a brake drum body, characterized in that: The outer circumferential surface of the brake drum body is provided with a plurality of annular grooves at intervals along the axial direction, the cross section of the annular groove is T-shaped and the groove bottom is arc-shaped, a split annular hollow tube is embedded in the lower part of the annular groove, and a split annular pressure cover is provided on the upper part of the annular groove to be pressed on the top surface of the split annular hollow tube, the outer circumferential surface of the split annular hollow tube is evenly provided with a plurality of radial through holes, and the top surface of the split annular pressure cover is provided with a plurality of radial openings connected with the split annular hollow tube; the split annular hollow tube is composed of two semi-annular hollow tubes; the split annular pressure cover is composed of two semi-annular pressure covers, the cross section of the semi-annular pressure cover is T-shaped, and the lower end thereof is provided with an arc concave surface matching the split annular hollow tube; the outer circumferential surface of the split annular hollow tube is provided with a thermal conductive coating.

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