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The characteristics of the road roller, Luoyang road roller manufacturers for you to explain

Release time:

2023-01-31

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Luoyang roller manufacturers believe that in highways, railways, airports, water conservancy projects and construction projects, rollers are mainly used to compact roadbeds, pavements, dams, cofferdams, building foundations, etc. Small rollers are suitable for compacting narrow spaces. The so-called compaction means that through rolling and impact, external forces overcome the friction and cohesion between soil, sand, gravel, and asphalt mixture particles to rearrange themselves, move closer to each other, squeeze out water and air, and increase the friction between the material particles. and the cohesion becomes greater, the compacted material will be denser.

Luoyang road roller manufacturers believe that compaction has gone through four processes: rearrangement, filling, separation and tamping. That is, the larger particles rearrange so that the gaps between them become smaller, the smaller particles fill the gaps between the larger particles, and the water and air in the gaps are squeezed out. Under the action of external force, the particles break, resulting in further filling. The pressing forces are as follows: static pressure, impact force, excitation force, oscillation force and friction force. The machine capable of producing the above mentioned compaction forces is the roller.

Luoyang road roller manufacturers believe that there are three main types of road rollers: steel wheel rollers, rubber wheel rollers and vibrating drum rollers. The latter two types of rollers are currently used more frequently in construction. The rollers have two main purposes: one is to meet the specified density requirements; the other is to flatten the road surface.

Luoyang roller manufacturer believes that compaction includes three forms: initial pressure, re-pressure and final pressure. Final pressing, in order to remove the traces of the road roller, is a step that cannot be ignored to keep the road surface smooth, and a steel wheel roller is used. Of course, if the initial pressure can meet the density requirements, there is no need for repressurization, but in fact, in most cases on site, these three steps are still maintained. Steel rollers are generally used for initial compression, but there will be a pressure-through phenomenon, that is, the mixture in front of the roller moves laterally under the action of pressure, and cracks may appear after compaction. Rubber tires are also used for initial pressing, but due to the high temperature during initial pressing, the mixture easily sticks to the tire and the traces left are difficult to remove, so there are many opportunities for rubber tires to be re-pressed.

Luoyang road roller manufacturer believes that the following precautions should be taken when operating the road roller:

1. After operation, the roller should be started before the earthquake, and the internal combustion engine should be set to medium speed and then adjusted to high speed.

2. Stop the engine when shifting gears and reversing, and reduce the internal combustion engine speed when shifting gears.

3. The roller is strictly prohibited from vibrating on hard ground.

4. When rolling soft roadbed, roll it 1 to 2 times without vibration first, then roll it with vibration.

5. Luoyang road roller manufacturer believes that the vibration frequency should be consistent during rolling. For adjustable vibratory rollers, the vibration frequency should be adjusted before operation, and the vibration frequency should not be adjusted when there is no earthquake.

6. Adjustment of the reversing clutch, impact clutch and brake should be carried out after the main clutch is disengaged.

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