The roller is a kind of engineering machinery.Suitable for high -level highways, railways, airport runways, dams and other large -scale engineering projects, compact operations, have good plateau (altitude 3500m) operation performance; can crush sand, semi -viscosity and viscosity soil, excitement force, excitement forceLarge, the impact depth is more than 1 meter.Then the topic of this issue will be explained in detail about the relevant knowledge of the road machine.
Introduction
The roller is also known as the earthmaker, which is a kind of road repair equipment.
The roadside machine belongs to the category of road equipment in construction machinery. It is widely used in high -level highways, railway, airport runways, dams, stadiums and other large engineering projects to compact and compact operations.Road base stable soil and asphalt concrete road layer.The roller is used as the gravity of the machine, which is suitable for various compact operations, so that the crushing layer will generate permanent deformation and dense.The roller is divided into two types: steel wheel and tire type.
Classification
1. divide according to the range of work quality
Depending on the quality of the work, the roller can be divided into light, small, medium, heavy and overweight
2. According to the principle of compaction
Depending on the principle of compaction, the roller can be divided into static effects, vibration, and impact
3. Follow the form of the structure and action of the voltage wheel
(1) According to the structure type type of the compact wheel, the roller can be divided into light wheel type, convex block (sheep feet) and tire type.
(2) According to the compact wheel combination type, the roadside machine can be divided into tire-light wheel combination type, vibration-oscillation combination type, etc.
(3) According to the action of the compact wheel, the vibration presses can be divided into vibration, oscillation and vertical vibration.
Pressing machine purchase
1. Select according to the requirements of the project:
1. If you want to get a uniform compact density, you can choose a tire -type roller.The tire -type roller does not destroy the original viscosity of the soil during crushing. There is a good binding performance between the soils of each layer of soil. In addition, the front wheels can be swinged, so the compaccism is even more uniform, and there will be no false pressure.
2. If you want to make the pavement compact and flat, you can choose a full -drive roller.For areas with low ability to compact the road machine, you can use low -end pressure and mobile and flexible rollers.To achieve the compacting effect as soon as possible, a large tonnage presses can be selected to shorten the construction period.
2. Choose according to the thickness of the layer:
1. When crushing the asphalt concrete pavement, the weight, amplitude and vibration frequency of the roller should be selected according to the thickness of the pavement of the mixed material.Generally, on the thin layer of the layer thickness of less than 60mm, it is best to use a small vibrator with a 2 ~ 6T with an amplitude of 0.35 ~ 0.60mm.
2. At the same time, in order to prevent the asphalt mixture from being too cold, it should be crushed closely after the paving.For a thick layer with a thickness of greater than 100mm, a large and medium -sized vibrator pressing machine with a high amplitude (up to 1.0mm) and 6 ~ 10T should be used.
Third, choose according to highway type (level):
1. For the first- and second -level national trunk roads and vehicle -specific roads, 6 ~ 10T should be used with a large vibrator with higher voltage and compatible capabilities.Equipped with a flexible vibration roller at about 2T.
2. For cement concrete pavement, tire -driven series dynamic pressure road machines can be used;
3. For asphalt concrete pavement, a full -drive vibration roller should be selected;
4. For the bottom layer of the high -grade road base, it is best to use tire pressure road machine or tire drive vibration roller to compact to obtain uniform denseness;
5. Static action light wheel pressure machines can be selected when repairing the pavement.
Fourth, choose according to the type of compressed material:
1. For the compact rock filling square, a large tonnage pressure machine should be selected to displacement of large blocks;
2. For the compaccism of clay, it is best to use a convex pounding road press;
3. For the compactness of the mixture, it is best to choose a vibration roller, so that the size of the size of the size is mixed;
4. Deep companion should be slowly crushed with heavy vibration pressing machines, and the shallow layer should be used for static action.

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