Axle stability depends on its various forms. Which is yours?

With the continuous advancement of science and technology, the chassis of the vehicle is becoming more and more complex and more and more scientific. In the previous article, the author introduced a stabilizing device that is not available to all trucks – the stabilizer bar. See the article “The parts can be “rapidly bent,” though they are small. Here, the author will give a detailed introduction to the indispensable part of the truck, the thrust rod.

Axle stability depends on its various forms. Which is yours?

● The effects of five different forms cannot be ignored

Axle stability depends on its various forms. Which is yours?

The thrust rod is a component used to maintain the stability of the axle, and is mainly composed of a connecting rod, a straight ball seat and an upper ball seat. One end is connected to the axle and the other end is connected to the frame. This part is matched with other parts responsible for the stability of the axle to ensure the longitudinal stability of the axle when the vehicle is driving or braking. However, some thrust rods can also ensure the lateral stability of the axle.

Axle stability depends on its various forms. Which is yours?

At present, the most widely used domestic applications are V-shaped thrust rods and I-shaped thrust rods. In-line parallel thrust rods are not common. Of course, the hole in the brain of Yan Jiaren was admired. They developed two kinds of special thrust rods, one should be called "thrust plate" and the other is X-shaped thrust rod. Here we first introduce the working principle of the thrust rod.

● It needs the stability of a small thrust rod axle

Axle stability depends on its various forms. Which is yours?

When the vehicle is braking, the thrust joint gimbal end (axle) decelerates or stops with the wheel, but the frame still moves forward due to inertia. If there is no thrust rod, the axle will be longitudinally offset, and with the thrust rod, the axle will be prevented from moving.

Axle stability depends on its various forms. Which is yours?

When the vehicle is moving forward, the gimbal end of the drive wheel thrust rod, that is, the axle and the wheel, pushes the frame together. At this time, the thrust rod (and other components) transmit the thrust of the axle to the body, so that the axle and The frame moves synchronously.

Axle stability depends on its various forms. Which is yours?

In addition, the V-shaped thrust bar and the “thrust plate” also have a lateral stabilization effect on the axle, which can prevent the left and right direction of the axle from moving. When the axle moves to the left and right, the V-bar triangle stability structure can prevent the axle of the axle from shifting and ensure the smoothness of the vehicle.

● The heavy truck must be light

The thrust rod is an essential part for the heavy truck. Because the light truck and the midium truck are lightly loaded, the leaf spring and the transmission shaft can have a reliable fixation effect on the rear axle, so the light truck and the midship card currently have no thrust rod. One part.

Axle stability depends on its various forms. Which is yours?

FAW Liberation J6P Heavy Duty Truck Pilot Edition

At present, the most widely used domestic heavy trucks are V-shaped thrust rods and I-shaped thrust rods, of which V-shaped thrust rods have two forms. One is that the end of the thrust rod is connected transversely with the axle, that is, the three connecting ends of the thrust rod are laterally connected, and the representative vehicle model is the Jiefang J6P.

Axle stability depends on its various forms. Which is yours?

Heavy Duty Truck Katekika SITRAK C7H Heavy Truck

Another form of V-shaped thrust rod is connected to the axle at the end of the connecting axle. The representative model is Heavy Duty Truck.

Axle stability depends on its various forms. Which is yours?

Dongfeng Tianlong 6x4 truck I-shaped thrust rod

Different from the V-shaped thrust rod, the I-shaped thrust rod only has two connecting ends, one end is laterally connected to the axle, and the other end is laterally fixed on the frame. However, compared with the V-shaped thrust bar, it does not have the effect of laterally stabilizing the axle. The representative model for assembling this thrust rod is Dongfeng Tianlong.


Axle stability depends on its various forms. Which is yours?

Inline parallel thrust rod on Baron M7C

As we all know, airbag suspensions are not torsionally resistant, and long-term distortion will lead to a reduction in the life of the airbags. The in-line parallel thrust rod used by Pa Long has a large effect on the lateral stability of the axle, and even exceeds the V-shaped thrust rod, which provides good anti-twist protection to the vehicle airbag.

Axle stability depends on its various forms. Which is yours?

Ionic 6x4 ProStar Tractor "Thrust Plate"

Of course, in addition to these common thrust rods, there are two more special thrust rods. The "thrust plate" and the X-shaped thrust bar, respectively, should have the same function as the V-shaped thrust bar. This type of design may be used for considerations such as durability.

Axle stability depends on its various forms. Which is yours?

MAN TGX 500 4X2 EfficientLine 3

Now, on MAN's latest MAN TGX 500 4X2 EfficientLine 3 vehicle, a special thrust rod called an X-shaped thrust rod is used. This thrust rod has four connecting ends, two each connecting to the frame and Axle. This kind of structure is more reliable and stable than the above mentioned thrust rods.

● Postscript

Through introduction, everyone should see the big role of this widget. In fact, there are many small parts on the truck, which may not be of great concern in peacetime, but it is indeed important or even indispensable for vehicles. This also reminds you of the card friends, usually checking more parts of the vehicle to ensure traffic safety.

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