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U type is commonly used in truck, it is used to stabilize the car chassis and frame. The leaf springs, for example, are attached with U-bolts. 1. Material characteristics, density, bending strength, impact toughness, compression strength, elastic modulus, tensile strength, temperature resistance, color according to the use of environment. 2 materials commonly used carbon steel Q235A Q345B alloy steel stainless steel and so on. The stainless steel material is 201 304, 321, 304L, 316, 316L. 3. National standard for U-bolts: JB/ZQ4321-2006. Step 4: Material U-bolts are divided into carbon steel Q235, Q345 alloy steel, stainless steel 201 304 316 and so on, that is, carbon steel and stainless steel

the stabilizer link damage abnormal sound, how to replace the stabilizer link, the role of the balance rod Balance rod rubber sleeve damage not only abnormal noise and affect safe driving, if there is a ding dong like a drum sound on the bumpy road, it may be damaged. Because the car is also a little mileage, steering wheel, chassis abnormal sound, so I tried to replace the balance pole, the result still did not eliminate abnormal sound, this video is only as a basic operation reference to replace the balance pole, check to determine the balance pole is wrong before replacement

Transverse stabilizer bar, also known as anti roll bar, is a kind of auxiliary elastic element in automobile suspension. The lateral stabilizer bar is a torsion bar spring made of spring steel in the shape of a "U" that sits across the front and rear ends of the car. The middle part of the rod body is hinged with a sleeve and the frame, and the two ends of the rod are respectively fixed on the lower arm of the left and right suspension. When the car is turning, due to the role of centrifugal force will cause the body roll, resulting in the inner wheel suspension stretch, the outer wheel suspension compression, resulting in the anti-roll bar bar torsion, produce a lot of torque, reverse action on the suspension, prevent the body in the turn too large lateral roll and improve ride comfort.

The function of the balance connecting rod on the car: (1) It has the function of anti-tipping and stability. When the car turns or goes over a bumpy road, the two wheels bear different forces. The car will shift its center of gravity, and the outside wheel will bear more pressure than the inside wheel. When one side bears more force, the gravity will push the body down, which will cause the direction to lose control. (2) The role of the balance pole is to keep the strength of both sides in a small range, the strength of the outside to the inside, by the inside to share a little pressure, so that the body balance can be effectively controlled. If the balance bar is broken, the steering will roll, which is more dangerous.

Shock absorber and elastic components undertake the task of cushioning impact and damping, damping force is too large, will make the suspension elasticity deteriorates, even damage the shock absorber connector. Due to the surface to adjust the elastic element and shock absorber this contradiction. (1) In the compression stroke (bridge and frame close to each other), the damping force of the shock absorber is small, so as to give full play to the elastic role of the elastic elements and mitigate the impact. At this point, the elastic element plays a major role. (2) In the suspension stretch travel (the bridge and the frame are far away from each other), the damping force of the shock absorber should be large to reduce the vibration quickly. (3) When the relative speed between the axle (or wheel) and the axle is too large, the shock absorber is required to automatically increase the liquid flow, so that the damping force is always kept within a certain limit, so as to avoid bearing too large impact load.

1.The Absorber is used to suppress the shock of the spring as it bounces off the absorber and the shock from the road surface. 2.It is widely used in automobiles to accelerate the attenuation of frame and body vibration, so as to improve the ride comfort of automobiles. 3.Shock absorbers are designed to stop the spring from jumping over uneven roads, although it filters the vibrations of the road. The spring itself moves back and forth.

Front Brake pads, also called brake pads, are the most critical safety parts in the braking system of a car, and the brake pads play a decisive role in the quality of all braking effects. Brake pads are mainly divided into the following categories: asbestos brake pads, semi metallic brake pads, metal-less brake pads, NAO formula brake pads, ceramic brake pads, and NAO ceramic brake pads.

1. The control arm, as the guiding and force transfer element of the automobile suspension system, transmits various forces acting on the wheel to the body, and ensures that the wheel moves according to a certain trajectory. The control arm (including the bushing and ball head connected with it) shall have sufficient stiffness, strength and service life; 2. Suspension system refers to the whole support system composed of spring and shock absorber between body and tire. The function of the suspension system is to support the body and improve the feeling of riding. Different suspension Settings will make the driver have different driving feelings;

1. Functional characteristics of multi-link independent suspension: multi-link suspension can not only ensure a certain degree of comfort, but also make the wheel and the ground as vertical as possible and reduce the tilt of the body as much as possible due to the large number of connecting rods. It is possible to maintain the ground adhesion of the tire. Its handling performance and double fork arm suspension are closely matched. Because of ample space, and pay attention to comfortable performance and control stability, most high-gear cars use multi-link suspension. It can be said that multi-link suspension is the best gear for high-gear cars. 2. The material characteristics of multi-link independent suspension, multi-link suspension structure is relatively complex, the material cost, research and development experiment cost and manufacturing cost are much higher than other types of suspension, and its space is large, small and medium cars for cost and space considerations rarely use this suspension; 3. the role of multi-link independent suspension: as the name suggests, multi-link suspension is composed of three or more connecting rod, and can provide multiple directions of control, so that the tire has a more reliable driving track of the suspension structure. However, nowadays, because the three-link structure can no longer meet people's higher pursuit of chassis control performance, only the more accurate structure, more accurate positioning of the four-link and five-link suspension can be called the real multi-link type, the two suspension structures are usually applied to the front wheel and the rear wheel respectively. Take the five-link suspension commonly used in the rear wheel as an example. The five connecting rods refer to the main control arm, the front positioning arm, the rear positioning arm, the upper arm and the lower arm respectively. Among them, the main control arm can play the role of adjusting the front bundle of the rear wheel, so as to improve the stability of the vehicle and effectively reduce the friction of the tire.