2024 Author: Erin Ralphs | [email protected]. Last modified: 2024-02-19 11:42
Despite the fact that drum brakes were invented much earlier than modern disc brakes, they still remain relevant for manufacturers and car owners. Such popularity was won due to the simplicity of the design. The brake drum is much simpler, and, accordingly, more reliable and unpretentious than disc brakes.
Production history
And they were invented back in the 19th century. The first prototypes of modern brakes were a primitive system of only three components. It was the brake drum itself, attached to the wheel, a strong and flexible band located around it, as well as a lever that tensioned the last part. Naturally, the service life of such a system was short-lived, besides, various stones and dirt got into it.
The design was improved only at the beginning of the 20th century. Then the engineer Louis Renault invented a new brake drum with more reliable components. For the first time, it included pads located inside the mechanism. The braking device was goodprotected from dirt, and therefore its service life is significantly increased.
Since then, the brake drum has changed its design and materials several times, but its function has remained unchanged. Such a device still reduced the speed of the car if necessary. It also doubled as a handbrake.
What does a modern drum brake disc consist of?
The front and rear drums are made exclusively from high quality and high strength cast iron steel. The finished element at the exit is ground from the inside and installed on the car. The part is mounted on the support shaft or on the wheel hub.
In addition, the design of the brake drum includes the following elements:
- Brake pads with a special composition of friction material (each manufacturer keeps its manufacturing method secret).
- Hydraulic cylinder (there may be more than one).
- Protection disk.
- Special lock.
- Return springs.
- Self-advance mechanism.
- Shoe brace.
- Shoe supply mechanism.
How does a brake drum work?
The principle of operation of this mechanism is as follows. The driver, when pressing the brake pedal, creates a certain pressure in the working fluid system. It in turn acts on the piston of the brake cylinder. After overcoming the forces of the return spring, the last element actuates the brake shoe, which diverges laterally and fits snugly againstdrum surface. As a result, the speed of rotation of the part is significantly reduced, and at the same time, the speed of the car decreases.
Conclusion
As you can see, the composition of the brake drum has really changed a lot in over 100 years of existence. All the technologies used now provide the car with the shortest possible braking distance on any road surface. In terms of efficiency, they are in no way inferior to their competitors - disk systems. Therefore, drum brakes are still in high demand among motorists, although recently many car companies refuse to equip their cars with such devices, preferring disc brakes.
Recommended:
Gasoline pump does not work: possible causes and solutions
The fuel pump is not working - a breakdown that cannot be called rare. But why does this mechanism fail? What are the causes of malfunctions? How to increase the resource of the fuel pump? You will find answers to these questions in the article
How does an automobile membrane tank (expansion tank) work and what functions does it perform?
Oddly enough, on the Internet you can find thousands of articles about thermostats and radiators, but few people remember such an important detail in the cooling system as a membrane expansion tank. It has a visually simple design and primitive functions, but its presence is very significant for every car. Often, motorists have come across cases when the internal combustion engine temperature sensor gives exorbitant values. But few thought about the reasons
Gasoline pump: where is it located and how does it work, description and purpose of the device
The article details the purpose of the fuel pump. The principle of its operation on injection and carburetor engines is considered. Attention is focused on the location of the fuel pump in both cases. Causes of fuel pump failure are given
Ford Focus-2 trunk does not open. How to independently open the fifth door and make repairs. How much does it cost to work in a service center
"Ford Focus-2" has received wide popularity not only in the Russian market, but also in European countries, in the US, China and India. Motorists are happy to buy sedans, hatchbacks, station wagons from Ford because of their reliability, ease of repair and comfortable suspension. However, with a mileage of more than 100,000 kilometers, the following malfunction often occurs: the trunk of the Ford Focus-2 does not open. The problem manifests itself unexpectedly and is noticed both on restyled and pre-styling models
Replacing drum brakes with disc brakes. Which brakes are better - disc or drum?
Most modern cars are equipped with disc brakes front and rear. On budget models, the rear axle is still drum. These mechanisms are considered obsolete
