CN-224214617-U - Brake drum convenient to heat dissipation

Abstract

The utility model discloses a brake drum convenient for heat dissipation, and belongs to the technical field of automobiles. The automobile brake drum solves the problem that in the prior art, the heat dissipation performance of an automobile brake drum is poor. The novel air guide device mainly comprises an annular protection plate, an annular braking plate is arranged inside the protection plate, a heat dissipation cavity is arranged between the protection plate and the braking plate, a plurality of air guide ribs are arranged between the protection plate and the braking plate, each air guide rib comprises a plurality of air guide rings which are distributed at intervals along the vertical direction, each air guide ring comprises a plurality of air guide blocks which are distributed at intervals along the circumferential direction, the air guide blocks on two adjacent air guide rings are arranged in a staggered mode, and a plurality of ventilation holes are formed in the protection plate.

Inventors

• XIAO MINGZHI
• SUN CHENGLEI
• YANG ZHENLIANG
• FENG GANG
• Yan Zaogang
• PANG XIANGYU
• ZHANG ZHE

Assignees

• 北京汽车制造厂(青岛)有限公司

Dates

Publication Date

20260508

Application Date

20250523

Claims (8)

1. 1. The utility model provides a brake drum convenient to heat dissipation, its characterized in that includes and is annular protection shield (1), the inside of protection shield (1) is provided with and is annular braking board (2), be equipped with heat dissipation chamber (3) between protection shield (1) and braking board (2), install a plurality of wind-guiding muscle (4) between protection shield (1) and braking board (2), wind-guiding muscle (4) include along vertical interval distribution's multilayer wind-guiding circle (5), every layer wind-guiding circle (5) include along circumferencial direction interval distribution's a plurality of wind-guiding piece (6), wind-guiding piece (6) staggered arrangement on adjacent two-layer wind-guiding circle (5), a plurality of ventilation holes (7) have been seted up on protection shield (1).
2. 2. Brake drum convenient for heat dissipation according to claim 1, characterized in that the inner wall of the underside of the protective plate (1) is provided with a ring-shaped boss (8), the bottom of the brake plate (2) being fixedly connected with the boss (8).
3. 3. Brake drum convenient for heat dissipation according to claim 1, characterized in that the bottom of the protection plate (1) is provided with an inwardly extending inner flange (9), and the inner flange (9) is provided with fixing holes.
4. 4. Brake drum convenient for heat dissipation according to claim 1, characterized in that the wind-guiding ribs (4) comprise five layers of wind-guiding rings (5) distributed at vertical intervals.
5. 5. Brake drum with convenient heat dissipation according to claim 4, characterized in that among the five layers of wind guiding rings (5), the wind guiding blocks (6) of the middle three layers of wind guiding rings (5) are all cylindrical.
6. 6. The brake drum convenient for heat dissipation according to claim 5, wherein in the five-layer wind guiding ring (5), the inner end surface of the wind guiding block (6) in the uppermost wind guiding ring (5) is an arc surface (10), and the inner end surface of the wind guiding block (6) in the lowermost wind guiding ring (5) is an arc surface (10).
7. 7. Brake drum facilitating heat dissipation according to claim 1, characterized in that the upper and lower sides of the protection plate (1) are respectively provided with hoops (11).
8. 8. Brake drum convenient for heat dissipation according to claim 7, characterized in that the hoops (11) on the upper and lower sides are in interference fit with the protection plate (1), and the hoops (11) on the upper and lower sides are fixedly connected with the protection plate (1) by screws.

Description

Brake drum convenient to heat dissipation Technical Field The utility model belongs to the technical field of automobiles, and particularly relates to a brake drum convenient for heat dissipation. Background Drum brakes have been used in automobiles for nearly a century, and drum brakes are still deployed today on many vehicle models (most used for rear wheels) due to their reliability and strong braking forces. At present, drum brakes are the first choice for rear braking of commercial vehicles due to the price difference of brakes in China market, and the drum brake products serving as main braking components are layered endlessly. However, the failure rate of the brake drum products used in a large range at present is high for a long time, wherein one main reason for the failure rate of the brake drum products is poor heat dissipation. Disclosure of Invention The utility model aims to provide a brake drum convenient for heat dissipation so as to solve the problem of poor heat dissipation of an automobile brake drum in the prior art. The utility model adopts the following technical scheme that the brake drum convenient for heat dissipation comprises an annular protection plate, wherein an annular brake plate is arranged in the protection plate, a heat dissipation cavity is arranged between the protection plate and the brake plate, a plurality of air guide ribs are arranged between the protection plate and the brake plate, each air guide rib comprises a plurality of air guide rings which are vertically and alternately distributed, each air guide ring comprises a plurality of air guide blocks which are circumferentially and alternately distributed, and the air guide blocks on two adjacent air guide rings are alternately distributed, and a plurality of ventilation holes are formed in the protection plate. Further, an annular boss is arranged on the inner wall of the lower side of the protection plate, and the bottom of the braking plate is fixedly connected with the boss. Further, an inward extending inner flange is arranged at the bottom of the protection plate, and a fixing hole is formed in the inner flange. Further, the wind guide ribs comprise five layers of wind guide rings which are vertically distributed at intervals. Further, in the five-layer wind guide ring, the wind guide blocks in the three middle wind guide rings are all cylindrical. Further, in the five-layer wind guide ring, the inner end surface of the wind guide block in the wind guide ring at the uppermost layer is an arc surface, and the inner end surface of the wind guide block in the wind guide ring at the lowermost layer is an arc surface. Further, hoops are respectively arranged on the upper side and the lower side of the protection plate. Further, the hoops on the upper side and the lower side are in interference fit with the protection plate, and the hoops on the upper side and the lower side are fixedly connected with the protection plate through screws. Compared with the prior art, the utility model has the beneficial effects that: According to the utility model, the brake drum is of a double-layer structure, namely, the brake plate is arranged in the protective plate, and the heat dissipation cavity is formed between the protective plate and the brake plate, so that compared with the integral brake drum in the prior art, the heat dissipation cavity can dissipate heat of the brake plate more quickly, namely, the heat of the brake drum is dissipated more quickly. According to the utility model, the wind guide ribs are designed into the multi-layer wind guide ring structure, each layer of wind guide ring comprises the plurality of wind guide blocks which are distributed at intervals along the circumferential direction, and the wind guide blocks on two adjacent layers of wind guide rings are staggered, so that the air channels in the heat dissipation cavity are mutually communicated, the air flow of the heat dissipation cavity is enhanced, the heat dissipation capacity is further improved, and the heat dissipation in the whole heat dissipation cavity is more uniform. Drawings FIG. 1 is a perspective view of the present utility model; Fig. 2 and 3 are cross-sectional views of the present utility model, respectively; Fig. 4 is a perspective view of the present utility model with the hoop attached. The air guide device comprises a protective plate 1, a brake plate 2, a heat dissipation cavity 3, an air guide rib 4, an air guide ring 5, an air guide block 6, an air guide block 7, a vent hole 8, a boss 9, an inner flange 10, an arc-shaped surface 11 and a hoop. Detailed Description In order to enable those skilled in the art to better understand the technical solution of the present utility model, the technical solution of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. All other embodiments, which can be made by those ski