鼓式刹车“弥久常新“的秘诀是什么？

鼓式煞车应用在汽车上面已经将近一世纪的历史了，但是由于它的可靠性以及强大的制动力，使得鼓式煞车现今仍配置在许多车型上 (多使用于后轮)。鼓式煞车是藉由液压将装置于煞车鼓内之煞车蹄片往外推，使煞车蹄片表面的来令片与随着车轮转动的煞车鼓之内面发生磨擦，而产生煞车的效果。Above the drum brakes used on automobiles has been a history of nearly a century, but because of its reliability and powerful braking force of drum brakes still configure on many models (used in the rear). Drum brake is by the hydraulic brake shoe of the devices within the brake drum will push outward, make to land on the surface of the brake shoe and wheel as the rotating surface friction within the brake drum, and the braking effect.鼓式煞车的煞车鼓内面就是煞车装置产生煞车力矩的位置。在获得相同煞车力矩的情况下，鼓式煞车装置的煞车鼓的直径可以比碟式煞车的煞车碟还要小上许多。因此载重用的大型车辆为获取强大的制动力，只能够在轮圈的有限空间之中装置鼓式煞车。Drum brake of the brake drum brake torque developed inside is brake device position. After obtaining the same brake torque, the diameter of the drum brake device of the brake drum can be smaller than a disc brake of the brake disc. So load with large vehicles to obtain powerful braking, can only in the limited space of rim device drum brake.鼓式煞车的作用方式：简单的说，鼓式煞车就是利用煞车鼓内静止的煞车片，去摩擦随着车轮转动的煞车鼓，以产生摩擦力使车轮转动速度降低的煞车装置。Drum brake role: in simple terms, USES a brake drum in drum brake stationary brake piece, go with friction wheel rotation of the brake drum, make wheel rotation speed is reduced to produce a friction brake device.在踩下煞车踏板时，脚的施力会使煞车总泵内的活塞将煞车油往前推去并在油路中产生压力。压力经由煞车油传送到每个车轮的煞车分泵活塞，煞车分泵的活塞再推动煞车蹄片向外，使煞车蹄片表面的来令片与煞车鼓的内面发生磨擦，并产生足够的磨擦力去降低车轮的转速，以达到煞车的目的。When on the brake pedal, the foot brake total pump power works will be pushed hard inside the piston will brake oil and pressure in the oil. Passing through brake oil pressure to each wheel brake wheel cylinder piston, brake wheel cylinder piston and push the brake shoe, outward to land on the surface of the brake shoe and brake drum inside friction, and generate enough friction to reduce the wheel speed, to achieve the purpose of the brakes.鼓式煞车之优点：1.有自动煞紧的作用，使煞车系统可以使用较低的油压，或是使用直径比煞车碟小很多的煞车鼓。2.手煞车机构的安装容易。有些后轮装置碟式煞车的车型，会在煞车碟中心部位安装鼓式煞车的手煞车机构。3.零件的加工与组成较为简单，而有较为低廉的制造成本。Drum brake of advantages: 1. Has the effect of automatic very tight, the brake system can be used to lower oil pressure, or the use of smaller diameter than the disk brake drum. 2. Easy to install hand brake mechanism. Some of the rear wheel device of disc type brake model, will be in the center of the brake disc hand brake on the installation of drum brake mechanism. 3. The parts of the processing and composition is simple, and has a relatively low manufacturing costs.鼓式煞车的缺点：1.鼓式煞车的煞车鼓在受热后直径会增大，而造成踩下煞车踏板的行程加大，容易发生煞车反应不如预期的情况。因此在驾驶采用鼓式煞车的车辆时，要尽量避免连续煞车造成来令片因高温而产生衰退现象。2.煞车系统反应较慢，煞车的踩踏力道较不易控制，不利于做高频率的煞车动作。3.构造复杂零件多，煞车间隙须做调整，使得维修不易。Drum brake faults: 1. The drum brake of the brake drum diameter will increase after heated, and cause a greater travel on the brake pedal, brake reaction than expected easy to happen. So when driving used drum brake of the vehicle, caused by continuous brake to avoid as far as possible to make the recession phenomenon due to high temperature. 2. Brake system response is slow, brake pedal strength is not easy to control, is not conducive to do high frequency braking action. 3. The structure more complex parts, brake clearance to do adjustment and make the repair is not easy.