Jan
Brake Pads
Brake pads are the main braking device. The first such mechanisms have been established long before the car, they were used to stop the carts and carriages. Over time, the application of brake pads changed dramatically, but the principle of their action remains the same. Their main task is to create a frictional force that prevents rotation of the wheel. In the first machines to use brake pads were the same as in carts. The device is directly clamped to the wheel, slowing the car.
But this method is good only at low speeds. Car, riding at a speed of 100 km / h, this system will not stop. So at the beginning of the twentieth century has been developed set of brake systems, but only to be used up to now, has a drum. In her shoes were inside the drum, which is spinning with the wheel. When braking device clamped to the wall drum, stopping him, and he, in turn, stop the wheels. Of course, it proved more effective, but now the shoe should meet very high standards of safety. When braking on high-speed style they are heated in the drum, because there is practically no heat transfer.
Due to overheating of the mechanism destroyed and resisted corrosion. First, the problem solved itself increases the strength of the pads and drum, but then it turned out that more efficient to introduce a new design, where blocks can quickly cool down. Such a system has a disk. Now calm air circulates between the rotor and pads, providing cooling the latter.
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