Composite explosion-proof brake drum
A brake drum and composite technology, which is applied in the field of automobile brake drums, can solve problems such as brake drum rupture, car accidents, guide brake breakage, etc., and achieve the effects of improving safety performance, reducing operating costs, and prolonging life
Inactive Publication Date: 2018-01-16
XUZHOU DALT MECHANICAL EQUIP MFG CO LTD
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- Abstract
- Description
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- Application Information
AI Technical Summary
Problems solved by technology
With the extension and penetration of cracks on the drum body, the mechanical strength of the drum body declines sharply, and eventually it will inevitably lead to brake failure.
Especially when used in large vehicles such as large trucks, the brake drum is prone to cracks and sudden rupture, which may cause a car accident in severe cases
Method used
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Embodiment Construction
[0015] The present invention will be further described below in conjunction with accompanying drawing:
[0016] Such as figure 1 , figure 2 with image 3 As shown, the composite explosion-proof brake drum of the present invention, its brake drum body 1 includes the outer ring 2 that is in contact with the brake shoe (not shown in the figure), and the outer circumferential surface of the outer ring 2 is provided with a convex position near the end face of the opening. Ring (not marked in the figure), the convex ring of the outer ring 2 is provided with an annular groove 6, the radial section of the annular groove 6 is an isosceles trapezoid with a short side on the outside, and the annular groove 6 is equipped with an annular groove The explosion-proof ring 5 with the same shape in the radial section of the groove 6, the outer surface of the explosion-proof ring 5 is flush with the outer surface of the convex ring; the brake drum body 1 is cast iron, and the explosion-proof ...
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The invention discloses a composite explosion-proof brake drum. A brake drum body of the composite explosion-proof brake drum comprises an outer ring in contact with a brake shoe, an annular groove isformed in the outer circumferential surface of the outer ring, and an explosion-proof ring consistent to the radial cross section of the annular groove in shape is installed in the annular groove. The explosion-proof ring is made of metal except cast iron, for example steel, is installed on the outer ring of the brake drum body manufactured by cast iron in a sleeving mode, the explosion-proof ring can also wholly exert pressure on the outer ring even if the outer ring of the brake drum body cracks, so that the outer ring of the brake drum body does not crack for a long time, the service lifeof the whole brake drum is prolonged, the safety performance of an automatic brake is improved, and the operation cost of an automobile is reduced.
Description
technical field [0001] The invention relates to an automobile brake drum, in particular to a composite explosion-proof brake drum suitable for large automobiles. Background technique [0002] The automobile brake drum is a cast iron piece shaped like a tambourine, which is fixed to the tire and rotates at the same speed. When braking, oil pressure is used to push the brake shoe to contact the inner edge of the brake drum, and the friction force generated by the contact can restrain the rotation of the tire to achieve the purpose of braking. Because the brake drum is a brittle gray cast iron material and works in a high temperature and high pressure environment, the formation of fatigue cracks on its surface is a physical characteristic of cast iron materials and is an irresistible objective law. With the extension and penetration of cracks on the drum body, the mechanical strength of the drum body declines sharply, and eventually it will inevitably lead to brake failure. E...
Claims
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IPC IPC(8): F16D65/10
Inventor 王舒
Owner XUZHOU DALT MECHANICAL EQUIP MFG CO LTD