I believe many people have seen the road roller. Its main working principle is to use vibration to compact the road surface, so that it has a certain strength and stability, so as to ensure driving safety. Because vibration can improve road quality, it is also often called "soft soil foundation treatment method", which is called vibration method for short. In highway construction, it is widely used in compaction, all kinds of non cohesive soil, gravel, gravel mixture and all kinds of asphalt concrete. An eccentric block shaft, an oil motor, a damping ring and a connecting frame are installed in the vibrating wheel.
The compaction principle of this compaction roller is to use the high-frequency vibration of the machine to resonate with the particles of the compacted material, so as to reduce the friction between the material particles and make the compacted layer easy to compact. When working, there are two kinds of pressure on the road. One is to use force; The other is static force.
The former includes two parts: one is dynamic load; The second is friction, that is, the interaction between the tire and the ground and the gravity of the wheel itself. The latter can be divided into two cases. One is static force, and the weight of the whole roller is on the front wheel The other is power. Eccentric blocks are used, and the wheels vibrate at a frequency of 1000-3000 times.
When the motor in the wheel rotates, the vibrating shaft will rotate together, making the eccentric block move periodically. If we fix the eccentric block on it, there is a certain distance between the eccentric block and the ground, which is what people call friction. When it rotates to the top of the wheel, the eccentric force generated moves the wheel upward. When it moves under the wheel, it drives the wheel to form a downward force. This eccentric block rotates inside the wheel, creating a hammering motion up and down the outer roller. This hammering action can make the pavement more compact and solid.
Then, what are the advantages of the roller compared with the traditional smooth roller?
The lessor of Jinan roller believes that the compaction effect of a 2-ton vibratory roller can be comparable to that of a 6-ton static smooth roller under the condition of compacting sandy soil. However, due to the use of vibrator and hydraulic system, it has the characteristics of simple structure, convenient operation and low cost. It has been widely used in southern China and has achieved good economic and technological benefits. The same as the self weight smooth roller, the compaction depth is deeper and the compaction effect is better.
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