WO2011035625A1

WO2011035625A1 - Brake drum of car with annular reinforced ribs

Info

Publication number: WO2011035625A1
Application number: PCT/CN2010/074541
Authority: WO
Inventors: 杨东洲
Original assignee: 蓬莱万寿机械有限公司
Priority date: 2009-09-25
Filing date: 2010-06-25
Publication date: 2011-03-31
Also published as: CN101649878A

Abstract

A brake drum of a car with annular reinforced ribs (2) is provided. The brake drum comprises a brake drum body (1) and is provided with several annular reinforced ribs (2) on the outer circumference surface of the brake drum body (1) perpendicular to the axis of the brake drum body (1). The annular reinforced ribs (2) can improve the intensity of the brake drum and increase the radiating surface of the brake drum.

Description

Automobile brake drum with ring ribs

The invention relates to an automobile brake drum, in particular to an automobile brake drum with an annular reinforcing rib.

Background technique

At present, the brake drums of automobile brake drums produced at home and abroad are mostly smooth outer surfaces, and some products have longitudinal ribs on the outer surface. The brake drums of these structures have the following disadvantages:

(1) The brake drum with smooth surface on the outside of the drum has poor heat dissipation performance, and the heat generated by the brake of the vehicle is slow, which causes the brake drum and the brake shoe to heat up rapidly, which reduces the friction coefficient and affects the braking effect. The outer surface of the drum is not provided with reinforcing ribs, and the mechanical weight of the brake drum of the same weight or thickness is low, and the drum body is prone to fatigue cracking, thereby causing malfunction of the brake failure.

(2) A brake drum provided with longitudinal ribs on the outer surface, although the heat dissipation area of the drum body is increased, it has no effect on reinforcing the mechanical strength of the drum body. As shown in Figure 4, the longitudinal ribs 3 are parallel to the drum axis 4. Since the direction of the force of the brake drum is outwardly rounded from the inner surface of the workpiece, the resulting crack 5 is located between the longitudinal ribs 3, so the direction of the crack 5 is also substantially the same as the rib 3 (and The drum axis 4) is distributed in parallel, so the longitudinal ribs 3 do not function to increase the strength of the drum.

(3) During the use, due to the heat and braking force, the brake drum is easily deformed, which affects the fit of the brake shoe and the brake drum, and reduces the braking effect.

Summary of the invention

The object of the present invention is to overcome the deficiencies of the prior art and provide a novel automobile brake drum, which can obviously improve the strength and rigidity of the drum body, has better heat dissipation effect, ensures good braking performance, and improves driving safety performance. . In order to achieve the object of the above invention, the present invention provides a technical solution of the following: an automotive brake drum with an annular rib, comprising an automobile brake drum body, a plurality of rings arranged on the outer circumferential surface of the brake drum Reinforcement. Generally, the direction of the force of the brake drum during operation is outwardly rounded from the inner circular surface of the workpiece, so that the direction of the broken crack 5 generated is also substantially parallel to the drum axis 4. Since the annular reinforcing rib surrounds the surface of the drum body, is not parallel to the drum axis 4, and the annular reinforcing rib is a complete annular middle without an opening, the annular reinforcing rib can effectively increase the strength of the drum body, and can Prevent the generation of cracks 5 and the deformation of the drum.

The annular rib may also be perpendicular to the axis of the drum drum. When the annular reinforcing rib is vertically distributed with the axis of the drum drum body, the drum body reinforcing effect is optimal.

The reinforcing ribs are integrally formed with the brake drum, and the number thereof is 1 to 10, preferably 3 ~

6 articles.

The rib cross section may be semicircular, triangular, trapezoidal or rectangular.

Compared with the brake drum of the prior art, the invention has the following advantages: since there is an annular reinforcing rib on the outer circumferential surface of the brake drum of the automobile, not only the strength of the brake drum but also the rigidity can be obviously improved, and the heat is reduced. And the braking force acts to cause the brake drum to crack and deform, and maintain a good fit between the brake shoe and the brake drum. At the same time, it also increases the heat dissipation area of the brake drum, which can effectively reduce the brake drum temperature, reduce the heat impact on the steel shovel and the tire, improve the service life of the brake drum, the friction lining and the tire, and effectively prevent the brake. Accidents caused by cracked drums and tire punctures have improved the safety of driving. DRAWINGS

1 is a schematic view showing the three-dimensional structure of an automobile brake drum with a ring-shaped rib;

2 is a schematic cross-sectional structural view of an automobile brake drum with an annular reinforcing rib according to the present invention;

Figure 3 is a cross-sectional view of a cross section of four annular reinforcing ribs of the present invention;

Figure 4 is a schematic view of a brake drum with longitudinal ribs and broken cracks. detailed description

The invention will be further described below in conjunction with the drawings and specific embodiments.

As shown in FIG. 1 and FIG. 2, an automobile brake drum with an annular reinforcing rib includes an automobile brake drum body 1. Three brake drum bodies 1 are disposed on the outer circumferential surface of the brake drum body 1. An annular rib 2 with an axis perpendicular to the axis. The rib 2 section is semi-circular. The number of reinforcing ribs can be selected by those skilled in the art according to actual conditions. For example, the number of reinforcing ribs can be 1 to 10, 3 to 6, and the like.

As shown in Fig. 3, there are four shapes of the rib 2 section, which are semicircular, triangular, trapezoidal and rectangular, respectively. Actual application is only four commonly used shapes, and the scope of protection of the present invention is not limited to the above-mentioned shapes, and any shape that can be realized by those skilled in the art to achieve the effects of the present invention belongs to the protection scope of the present invention. .

Claims

Claim

An automobile brake drum comprising an automobile brake drum body (1), characterized in that: a plurality of annular reinforcing ribs (2) are provided on an outer circumferential surface of the brake drum body (1).

2. The automotive brake drum according to claim 1, wherein: said annular reinforcing rib (2) is perpendicular to an axis of the brake drum body (1).

The automobile brake drum according to claim 1 or 2, characterized in that: the reinforcing rib (2) is integrally formed with the brake drum.

4. The automobile brake drum according to claim 3, wherein the number of the reinforcing ribs (2) is 1 to 10.

The automobile brake drum according to claim 4, characterized in that the number of the reinforcing ribs (2) is 3 to 6.

6. A brake drum for a motor vehicle according to claim 3, characterized in that the rib (2) has a semicircular, triangular, trapezoidal or rectangular cross section.

The automobile brake drum according to claim 1 or 2, characterized in that the number of the reinforcing ribs (2) is 1 to 10.

The automobile brake drum according to claim 1 or 2, characterized in that the number of the reinforcing ribs (2) is 3 to 6.

9. A brake drum for a motor vehicle according to claim 1 or 2, characterized in that the rib (2) has a semicircular, triangular, trapezoidal or rectangular cross section.