After this title, Xiao Bian suddenly remembered and wondered if everyone had the same feeling. Every time he went for an autumn tour and took a tourist bus or even the most typical bus, the driver ordered a brake and waited for the body to fly out of the seat and roll it to the front seat. Go to the place in the last row, but also go straight to the place. So, why is the car so overwhelming that people do not have it, Xiaobian to give everyone the general knowledge of life. It literally means the comfort and design of the car. For the comfort of the same front row is better than the back row, I think the main reason is the uneven distribution of axle load on the bus. Considering that most buses use a rear-mounted or mid-engined layout, passengers are more likely to be located in the rear of the car, so the rear axle load is usually greater than the front axle. This results in the use of stiffer elastic elements for the rear suspension. It also directly led to the effect that the "back seat is always special". Different cars have different shock effects, and the back of a high-end bus doesn't bump into much. The shock absorber itself absorbs the impact energy through a buffer structure such as a spring, so the bumping process is actually a process in which energy is repeatedly absorbed and released. Hearing people say that he sat with the tallest man in the last row of China and Pakistan. When he was on the road to repair, he was thrown us directly because of excessive jolts. As a result, his head hit the roof of the car. Imagine the level between the car and the car is still very big. In terms of physics, most of the car's front suspensions are McPherson, double wishbone and other independent suspension, rear suspension with trailing arms, torsion beams, and multiple links, etc., as most cars are The front engine is used, especially front-drive vehicles, so when the obstacles pass through, the front body of the vehicle has a small amount of up and down movement because of the large mass of the front body. More vibration is absorbed through the shock absorption. Due to the small mass of the rear part of the vehicle body, the jumping amplitude is definitely greater than that of the front part, and the distance from the front row to the front suspension is much greater than the distance from the rear row to the rear suspension, so it is certain that the rear row is inferior to the front row. Of course, there are also some mid-to-high-class cars that do a great job in the comfort of the back row. For example, the new Mercedes-Benz S is very comfortable. For cost considerations, both Chinese and Pakistan are leaf springs. Counting the number of front and rear axles, it is good to know which one is good, because buses use air springs. The final solution is to jog along with the car. It is also an attitude of enjoying life.
1. Technology: die casting, die cast, machining.
2. Material: aluminum, adc 12, a 380
3. Surface treatment: blasting
4. Application: auto parts, mobile lift, rim, frame
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