The road roller is a commonly used compaction machine with a wide range of uses. It can be used to compact sand, semi-cohesive and cohesive soil, subgrade stabilized soil and asphalt concrete pavement layers. This article introduces the operation rules of the roller.
1. During operation, the roller should start first and then start to vibrate. The internal combustion engine should first be at medium speed, and then modulate the high speed.
2. Shut down first when shifting and reversing, and reduce the engine speed when shifting.
3. It is strictly forbidden for the roller to vibrate on the solid ground.
4. When rolling the soft subgrade, it should be rolled 1 or 2 times without vibration, and then vibrated.
5. When rolling, the vibration frequency should be consistent. For the vibratory roller that can adjust you, the vibration frequency should be adjusted before operation, and the vibration frequency should not be adjusted without vibration.
6. The adjustment of the reversing clutch, shock clutch and brake should be performed after the main clutch is disengaged.
7. When going up or downhill, you cannot use the fast gear. In sharp turns, including articulated vibratory rollers, it is strictly forbidden to use fast gear when rolling in small turns.
8. The roller must not be engaged in vibration when driving at high speed.
9. When stopping, the vibration should be stopped first, then the reversing mechanism should be placed in the neutral position, the transmission should be placed in neutral, and finally the handbrake control lever should be pulled up, and the internal combustion engine will stop after a few minutes of idling.
10. Other operational requirements should meet the requirements of the static roller.
①Whether it is uphill or downhill, the bottom layer of the asphalt mixture must be clean and dry, and the asphalt bonding layer must be sprayed to avoid the mixture slipping during rolling.
②Whether it is rolling uphill or downhill, the driving wheel of the roller should be behind. This has the following advantages: when going uphill, the rear drive wheel can withstand the driving force provided by the ramp and the machine itself, and the front wheel initially compacts the road surface to withstand the large shear force generated by the drive wheel ; When going downhill, the impact force generated by the roller's own weight is offset by the braking of the driving wheel. Only the mixture after the front wheel is rolled has the ability to support the rear driving wheel to generate shear force.
③ When rolling uphill, the rollers should be stable in starting, stopping and accelerating to avoid excessively high or low speed.
④Before rolling uphill, the mixture should be cooled to the specified lower limit temperature, and then static pre-compression should be carried out. Vibration compaction is used only when the temperature of the mixture falls to the lower limit (120 ° C).
⑤ Downhill rolling should avoid sudden shifting and braking.
⑥ When rolling downhill when the slope is very steep, you should first use a light roller to pre-compact, and then use a heavy roller or vibratory roller to compact.
