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

The invention relates to a construction method of a highway asphalt pavement with long service life, which is suitable for ensuring highway quality. The construction method comprises the following steps: carrying out initial rolling by using a tyre roller: the tyre roller rolls 2-3 times after a spreading machine, and the temperature of the pavement is 120-150 DEG C in the rolling process; and finishing final rolling by using the steel roller. In order to prevent the material from attaching to the tyres, the temperature of the pavement is kept above 100 DEG C when the tyre roller is used for finishing initial rolling. Since the temperature of the pavement during initial rolling is high and the kneading amplitude of the tyres is high, the weight of the tyre roller can be properly reduced, and the design requirement for pavement compactness can be satisfied only by rolling 2-3 times. The rolling quality of the pavement is determined by temperature. Asphalt in the materials can easily form a thick seal oil film layer on the pavement, thereby preventing the invasion of water, mud and air, being beneficial to preventing the pavement from being damaged by water and enhancing the durability of the pavement.

The invention discloses an environment-friendly type concrete modifier, which is prepared by the following raw materials by weight: 2.5-3.8 parts of acrylic acid ester functional compound, 1.5-2.8 parts of polycarbonate, 2.5-3.2 parts of organic amine lignin; 2.5-3.3 parts of alkali lignin, 0.8-1.7 parts of benzenecarboxylic acid, 0.7-2.5 parts of carrageenan, and 2-4 parts of borax. Compared with the prior modifier, acrylic acid ester functional compound, benzenecarboxylic acid and carrageenan are added in an asphalt mixture production process, so as that a lubrication high-molecular chain-shaped structure is formed in a cementation material after addition, mixing and grinding temperature of a mixture is greatly reduced, and energy consumption is saved; pavement has good quality, and has a good high temperature rut resistant capability, a water damage resistant capability and an ageing resistance; and the raw materials have advantages of low cost, small smog and gas discharge amount, and environmental protection.

The invention relates to an asphalt modifier comprising the following components in parts by weight: 30-80 parts of asphalt mixtures, 5-20 parts of sodium dodecyl benzene sulfonate, 0.1-5 parts of furan resins and 40-80 parts of water. The invention has the advantages that the sodium dodecyl benzene sulfonate, the furan resin and the water are added in the producing process of the asphalt mixtures, and then a lubricating macromolecular chain structure is formed in a cementing material, thereby greatly reducing the mixing and grinding temperature of the asphalt mixtures and saving the energy consumption; in addition, the invention has the advantages of good compaction performance, reduced grinding times, good pavement quality, better high-temperature anti-rutting capacity, water damage resistant capacity, ageing resistant capacity, and the like, small discharge amount of smoke and gases, great environmental protection and wide application scope and can be used for paving tunnel pavements, steel bridge surfaces, heavy-load roads or airfield runways, and the like.

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.

The invention discloses an ultra-thick bed sintering method for reducing sinter return ratio and employing presintering; ignition temperature is optimized, a suitable amount of insulation covers are provided, high-oxygen hot air is introduced, surface ignition quality of upper and lower beds of sinter can be effectively improved, mineralizing time of surface sinter can be extended, and cold brittleness of the sinter is reduced; through reasonable coal allocation and water regulation for the upper bed of sinter mixture and reducing the amount of rolls of a distributor, better breathability is provided for the upper bed of sinter mixture; according to the features of the upper bed of mixture, bed combustion and particle size deviating is inhibited, and the bed never combusts too fast; through comprehensive technical means, it is possible to effectively decrease the return ratio of the upper bed of sinter and the whole bed of sinter.

The invention relates to the technical field of asphalt, and discloses a preparation method of environment-friendly modified waterproof asphalt, which comprises the following steps: S1, preparing the following raw materials in parts by weight: 15-30 parts of matrix asphalt, 35-45 parts of plant asphalt, 23-40 parts of rock asphalt, 0.5-10 parts of anti-aging agent and 0.5-3 parts of petroleum resin; s2, mixing: the matrix asphalt, the plant asphalt and the rock asphalt are poured into a stirring cylinder to be heated and stirred, and the mass ratio of the raw materials is as follows: 30-50% of the plant asphalt, 20-45% of the rock asphalt and 10-35% of the matrix asphalt; and S3, adding an additive. According to the present invention, the purposes of environmental protection and low pollution can be achieved through the cooperative use of the plant asphalt and the rock asphalt, the overall structure of the asphalt can be uniform and dense through the rubber powder so as not to easily crack in the actual application process, and the asphalt can have good high-temperature rut resistance and good water damage resistance through the modifier.

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 provides a municipal roadbed construction method which comprises the steps that a construction site is cleaned, the surface layer of a foundation is loose soil, and if the thickness of the loose soil is lower than than or equal to 30 cm, the loose soil is ground to the compactness of 90% after sundries are removed; if the thickness of the loose soil is larger than 30 cm, the loose soil is compacted in a layered mode till the compaction degree is 90%; the cleaned construction site is subjected to soil material backfilling, and the accumulated thickness of the laid soil material ranges from 50 cm to 60 cm; the moisture content in the soil material is controlled to be 30-50%, a curing agent is added into the soil material, uniformly stirring and mixing are implemented, the uniformly mixed soil material is paved through a bulldozer, and the soil material is flattened; and the flattened soil material is rolled through a light path road roller so as to quickly cure the soil material added with the curing agent, and the laid multiple layers of soil materials are repeatedly rolled . The roadbed is thus paved. Due to use of the curing agent, the compaction degree and the bearing capacity of the roadbed can be improved to a certain extent.

The invention relates to a grabbing Chinese yam seeder, which comprises a seeding mechanism, wherein the seeding mechanism comprises a crank-link mechanism and a mechanical arm; a crank in the crank-link mechanism is rotationally connected to an output shaft; the connecting rod is connected with the mechanical arm; the mechanical arm comprises a connecting rod, a slideway and a grabbing arm; one end of the connecting d is hinged to a connecting link in the crank-link mechanism and the other end is fixedly connected with the grabbing arm; and a baffle plate is formed on a rack. According to the grabbing Chinese yam seeder, through cooperation of the crank-link mechanism and the mechanical arm, the mechanical arm grabs Chinese yam circularly to seed and grabs one Chinese yam seed each time, the grabbing accuracy is high, the problems of seed blockage and leakage are solved. In addition, by using a tractor for traction, ditching, seed discharging, seeding, earthing and tapping are completed at one time, so that the number of grinding times for soil is reduced, the work efficiency of a machine is improved, conversion from manual seeding to automatic seeding is achieved and the labor burden is reduced.

The invention discloses a sandbar water source comprehensive recycling system, which comprises a water resource collection system and a spraying construction shed system. The water resources collection system includes a side ditch, a dewatering well, a diversion ditch and a water collection purification tank. The side ditch drains the collected pavement water into the catchment purification tank;The water in the groove construction in the road construction flows into the dewatering well, and the dewatering well pumps the water into the diversion ditch, and the diversion ditch leads the waterinto the water collection and purification tank; The spray construction shed system comprises a sunshade shed and a spray system; The awning is located on the pavement and can slide along the slidewayof the road in the direction of road construction. The pump of the sprinkler system transfers the water in the water collecting purification tank to the sprinkler head of the sprinkler system; The sprinkler head of the sprinkler system has a plurality of sprinklers, which are evenly arranged on the sunshade awning and are sprayed in the sand foundation construction; The spray water flows into theside ditch for recycling. The invention can reasonably utilize water resources, realize energy conservation and environmental protection, and can harness the flying dust, and can avoid the influenceof sunshine, rain on the construction period, and improve the construction efficiency.

The invention relates to a construction method of a highway asphalt pavement by adopting a tire initial pressing process. The method comprises the following steps that A, an adopted asphalt mixture comprises coarse aggregate, fine aggregate and asphalt, and the particle size of coarse aggregated rock in the coarse aggregate corresponds to the thickness of the asphalt pavement after construction; and B, a pneumatic tyred roller is adopted for initial pressing, that is, a paver paves the asphalt mixture on the roadbed, and the pneumatic tyred roller rolls after following the paver. After initialpressing is completed 2-3 times in a reciprocating manner, a steel cylinder road roller is adopted for final pressing. The top surfaces of the coarse aggregated rock directly form a road surface, andgaps between the adjacent coarse aggregated rock are filled with the fine aggregate. In the highway use process, the top surface of the coarse aggregated rock is directly rubbed with vehicle tires, and the aggregated rock hardness is far higher than that of the tires, so that the pavement is durable and wear-resistant; and meanwhile, the coarse aggregated rock is fixed on the hard roadbed and does not have a space for moving up and down, so that the compaction force and the bearing capacity of the whole pavement are relatively high and are far higher than those of an asphalt pavement in the prior art.

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.

The invention discloses an on-line adjustment method for rolling oil based on the classification of hot-roller iron sheets, and relates to the technical field of hot-rolled surface on-line detection, including the setting of the initial value of rolling oil opening, the collection of steel sheet defects in strip steel rolls, and the rolling oil According to the calculation logic of the opening degree and the surface grade measured by the surface meter, the rolling oil application strategy is formulated. The invention combines the use of rolling oil with the defects of roll iron sheets detected by the surface instrument, and is put into use only when the roll iron sheets appear and meet certain conditions, which can greatly reduce the number of rolling oil coils to be used and reduce the rolling loss. Oil consumption; Defect grades are confirmed according to the steel sheet grade and the number of defects on the surface of the strip steel, and the online dynamic adjustment of the rolling oil concentration is realized, which further plays the role of rolling oil in improving the surface quality of the strip steel. The present invention dynamically adjusts the rolling oil based on the surface quality of hot-rolled products, so as to improve the use efficiency of the rolling oil in the hot-rolling process and improve product quality, and significantly improves the use efficiency of the rolling oil.