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A telescopic blade assembly and brake drum

A brake drum and blade technology, applied in the direction of brake type, brake components, mechanical equipment, etc., can solve the problems of shortening the service life of drum brakes, affecting the cooling effect of the brake drum, and reducing the braking efficiency, so as to avoid the problem of brake drums. The effect of reducing dynamic performance, enhancing braking effect, and increasing air resistance

Inactive Publication Date: 2017-10-31
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the natural environment is diverse, especially in summer, winter, and wind speed, which often affect the cooling effect of the brake drum and easily lead to brake overheating
In particular, continuous braking is required on the downhill section, and the braking will continue to generate heat, resulting in a sharp drop in the braking performance of the vehicle, which will bring a huge test to the vehicle braking system, and the service life of the drum brake will be greatly shortened

Method used

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  • A telescopic blade assembly and brake drum
  • A telescopic blade assembly and brake drum
  • A telescopic blade assembly and brake drum

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Embodiment 1, combining figure 1 , a telescopic blade assembly, the telescopic blade assembly includes a sliding seat 3, a blade seat 4 and a blade 5, the blade seat 4 is arranged in the sliding seat 3, the blade 5 is installed in the blade seat 4, and the blade 5 can extend out of the blade seat 4. The sliding seat 3 has a mounting groove 7, the blade seat 4 is located in the mounting groove 7, the bottom of the blade seat 4 is connected with the bottom of the mounting groove 7 through a return spring 8, and the opening of the sliding seat 3 has a fold that is turned outwards. side.

[0023] The inside of the blade holder 4 has a blade chamber 9 that can accommodate the blade 5. The blade 5 is located in the blade chamber 9 of the blade holder 4. The opening of the blade chamber 9 has a blocking portion that restricts the blade 5 from coming out. The blocking portion will block the blade 5. Make it impossible to break away from the blade cavity 9 completely. The ori...

Embodiment 2

[0024] Example 2, combined with Figure 2 to Figure 4 , a brake drum, the annular outer wall of the brake drum 1 is evenly arranged with four accommodation cavities 2, the cross-section of all the accommodation cavities 2 is T-shaped, the openings of which are facing the outside of the brake drum 1. Each accommodating cavity 2 is provided with a telescopic vane assembly as described in Embodiment 1. The sliding seat 3 of the telescopic blade assembly is connected with the inner side wall of the accommodation chamber 2 through the telescopic spring 6, and the initial position of the sliding seat 3 is shown in Figure 4 , the sliding seat 3 is restricted on one side in the accommodation chamber 2 by the telescopic spring 6 , and the sliding seat 3 can slide in the accommodation chamber 2 . The orientation of the opening of the installation groove 7 and the orientation of the opening of the vane chamber 9 are the same as the orientation of the opening of the accommodating chambe...

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Abstract

The invention discloses a telescopic vane assembly, which comprises a sliding seat, a vane seat and blades. The vane seat is arranged in the sliding seat, the vanes are installed in the vane seat, and the vanes can extend out of the vane seat. A brake drum, the annular outer wall of the brake drum is evenly arranged with a plurality of accommodation cavities, the cross-section of all the accommodation cavities is T-shaped, the openings of which are all facing the outside of the brake drum, and each accommodation cavity is provided with a The telescopic blade assembly. When the vehicle is accelerating or running at a constant speed, the telescopic blade assembly will not protrude from the outer surface of the brake drum to reduce air resistance and power consumption. When the vehicle brakes with greater than a certain braking strength, the blades will protrude from the outer surface of the brake drum, which can increase air resistance and enhance the braking effect. At the same time, the air flow velocity on the outer surface of the brake drum is increased, and the heat dissipation performance of the brake drum is enhanced. Therefore, it can avoid the degradation of the braking performance caused by the overheating of the brake and ensure the braking effect of the vehicle.

Description

technical field [0001] The invention relates to the technical field of vehicle braking, in particular to a telescopic vane assembly and a brake drum equipped with the assembly. Background technique [0002] The brake is an important safety component of the vehicle, so it is very important to ensure the braking efficiency of the brake. For drum brakes including brake drums and brake shoes, according to the needs of the vehicle's driving conditions, the brakes sometimes need to work for a long time or frequently, which will continuously convert most of the kinetic energy of the vehicle into heat energy. The heat energy is absorbed by the brakes, and the temperature of the brakes rises, which easily leads to overheating of the brakes, which significantly reduces the braking efficiency of the drum brakes and affects the safety performance of the vehicle. The heat generated when the vehicle brakes is mainly absorbed by the brake drum and dissipated to the environment. Therefore,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16D65/807
Inventor 赵鲁华管德永孙彦明
Owner SHANDONG UNIV OF SCI & TECH
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