32results about How to "Reduce the number of rolling" patented technology

The invention relates to a construction method for an asphalt road surface of a road. The method is suitable for ensuring the quality and the longer service life of the road, and includes steps as follows: a pneumatic tyred roller is adopted for the initial rolling, namely, the pneumatic tyred roller follows a spreading machine closely to roll for 2-3 times, and during the rolling process, the temperature of the road surface is 120-150 degree C; and then a steel wheel roller is adopted for the final rolling after the first rolling. In order to prevent the asphalt from sticking onto the tyres, the temperature of the road surface is kept above 100 degree C during adopting pneumatic tyred roller to finish the initial rolling. As the temperature of the road surface during the initial rolling is higher, and the kneading amplitude of the tyres is larger, therefore, the weight of the adopted pneumatic tyred roller can be reduced appropriately, and the rolling time is only required for 2-3 times, in this way, the design requirement of the compactness of the road surface can be satisfied. The temperature determines the rolling quality of the road surface, and meanwhile, the asphalt in the material easily forms thicker sealing oil film layer, so that water, slurry and air can be prevent form entering, prevention of water damage to the road surface can be facilitated, and the durability of the road surface can be improved.

An embodiment of the invention discloses a method of integrally manufacturing a trash rack plate of a drainage chamber. The method comprises the following steps that (1) the size of a water outlet ofthe drainage chamber is measured, a tile with arc-shaped structures on the top edge and the bottom edge is selected, and the size of the tile is larger than that of the water outlet of the drainage chamber; (2) the opening position is determined, specifically, the reserved position of the trash rack plate is determined according to the size of the water outlet of the drainage chamber; (3) cuttingis conducted, specifically, the tile is cut according to the reserved position, a reserved hole is formed, and at least two breakage points are reserved on the edge which needs to be bent and is located in the reserved hole in the rolling process; (4) the trash rack plate is installed, specifically, the trash rack plate is installed in the reserved hole, the trash rack plate and the tile are welded, and the welding positions are the positions of the breakage points; and (5) rolling is conducted, specifically, the tile where the trash rack plate is installed is rolled, so that the trash rack plate of the drainage chamber is obtained. By the adoption of the method, the frequency of rolling of the tile is effectively reduced, and the rolling quality is improved. Meanwhile, the difficulty andthe workload in the process of welding of the trash rack plate and the tile are reduced, the working efficiency is improved, and the cost is saved.

The present invention relates to the technical field of mechanical processing of corn stalks, in particular to a corn stalk processing device and a method for processing corn stalks; including the mobile chassis for moving in the farmland and the cutting mechanism installed on the mobile chassis , the screening mechanism, the crushing mechanism, the returning mechanism and the briquetting mechanism; After the corn stalks are crushed and screened, the corn segments are returned to the field and packed; to solve the technical problem in the prior art that there is no device for collecting and returning the corn stalks at one time.

The invention discloses an impact rolling construction method which belongs to the technical field of road foundation reinforcement and includes the following procedures: surface leveling of a impact rolling section; detecting the degree of compaction and water content; conducting impact rolling for 3 to 9 times with an impact compactor when the degree of compaction and water content of the surface of the impact rolling section meet the design requirements; leveling with a dozer to clean the redundant earth and arrange the road foundation; rolling for 1 to 2 times with a vibrating compactor or a light wheel compactor; testing the secondary deformation modulus Ev2 value of the foundation soil after impact rolling. The invention accurately defines foundation in which geographic conditions is applicable for the reinforcement construction method for impact rolling, more fully displays the role of impact rolling and also greatly reduces the rolling times. Generally, 3 to 9 times of rollingare enough, and the testing indicators after rolling meet the foundation standards of German highways. The construction price is reduced and the construction progress is accelerated. The invention isin particular applicable in reinforcement construction of foundation of high speed railways and highways.