Truck Suspension Torsion Arm Water Glass Investment Casting

Product Introduction

There is a big difference between torsion beam suspension and independent suspension. Strictly speaking, torsion beam suspension is semi-independent suspension. As for the statement that Mazda and Mercedes-Benz insist on using torsion beam suspension, it is somewhat overgeneralized. In fact, the A-class and A0-class cars designed by many car companies use torsion beam suspension, such as Volkswagen, Honda, and PSA.

The torsion beam suspension is limited by its own structure and cannot restrict too many degrees of freedom. Therefore, from the perspective of the upper limit of the hardware structure, its potential is not as good as independent suspension such as MacPherson. It is more powerful than larger suspension such as double wishbones and 5-links. The same cannot be said. So it is destined to be used in most small cars. Because small cars are low in height and small in size, the torsion beam can handle it. This is like doing a four-fold mixed operation. College students are not needed, elementary school students are enough.

Torsion beam suspension is not plate suspension
I don't know when Truck suspension torsion arm water glass investment casting was called plate suspension? In fact, torsion beam suspension and plate suspension are completely different suspension forms. As shown in the picture above, the real plate suspension uses steel leaf springs stacked in layers, also called bow springs. This kind of leaf spring will be equipped on the integral bridge suspension, leaf spring + integral bridge suspension = plate suspension. But this combination only appears on load-carrying vehicles, that is, trucks. In the field of passenger cars, leaf springs are not used.
Therefore, there is no floor suspension in the field of passenger cars, and the torsion beam is not a floor suspension. Even off-road vehicles that use integral axle suspension on a large scale do not use leaf springs. Therefore, many friends call the torsion beam a plate suspension, which is obviously a bit irrational. There are many types of suspensions. Even the non-independent suspension integral bridge with the simplest structure still has scenes suitable for it. As shown in the picture above, when the integral axle suspension is lifted up on one side of the wheel, the other side wheel will be pushed down, which ensures that the tire is in contact with the ground and obtains grip.

Torsion beam suspension is a semi-independent suspension
Why is torsion beam suspension called semi-independent suspension? As shown in the figure above, the structure of the torsion beam suspension is simple. It only consists of a cross beam (torsion beam), a spring and a shock absorber. Although the torsion beam suspension is not as independent and interference-free as the independent suspension, the torsion beam is twisted. That is to say, when one wheel receives an impact force from the ground, this force will be transmitted to the cross member along the drag arm, but it will not directly affect the other wheel.
The crossbeam will twist and deform when it is subjected to external force, that is, this twisting deformation is used to offset the external force, thereby ensuring that the external force does not interfere with the wheel on the other side. Many car enthusiasts like to use the above picture to evaluate the torsion beam. That is, when one wheel is bounced and lifted by an external force, the other wheel will also be affected at the same time? This conclusion is completely true for integral bridge suspension, but not completely true for torsion beam suspension. Because the cross member will twist when it is impacted by an external force and absorb part of the force, reducing or eliminating the impact on the wheel on the other side.
Therefore, the torsion beam suspension has independent suspension characteristics and also has non-independent suspension characteristics. The characteristics of a torsion beam suspension depend on the load and impact it bears. When the crossbeam uses twisting to offset the load and impact transmitted from one wheel, the torsion beam can exhibit independent suspension characteristics. On the contrary, once the motion load breaks through the constrained geometry of the cross beam, the torsion beam suspension will exhibit the characteristics of a non-independent suspension. The key point lies in the hardware structure design and how much load the beam can offset.
That is to say, when the vehicle is heavy enough, large enough, and the speed is fast enough, the disadvantages of torsion beam suspension will be fully revealed, such as pure non-independent suspension. On the other hand, if the car is small and light and is not used for extreme driving, then the torsion beam can make good use of twisting deformation to absorb impacts. At this time, the torsion beam suspension has completely independent suspension characteristics. Therefore, we can see that most of the cars equipped with torsion beam suspension on the market are A and A0-class models, and the weight is generally around 1.3 tons. Due to their light weight and short wheelbase, the motion loads generated by such cars are often not large even when driving at high speeds. big.
 

Detection Systems

Copper Silica Sol Investment Casting