As we all know, asphalt pavement in the long-term repeated load and the role of natural light, inevitably there will be pit, bag package, net crack, subsidence as the representative of the various diseases. Because sometimes design, selection and construction quality of the wishful, more quickly the frequency of the occurrence of the disease. If these diseases are not repaired in time to restore the basic functions of the road, not only will affect the traffic flow, but also to accelerate the expansion of the disease, greatly improving the cost of repair works. Therefore, the timely repair of asphalt pavement has become one of the increasingly important priorities of highway maintenance units.Double Steel Roller - Road Machinery Equipment Manufacturers - Doan Machinery
Cold and modified asphalt solution repair pit, without heating, to achieve a cold oil, cold materials, cold mix. The car in the operation can be based on the base layer, grass-roots, surface layer of the different requirements of free gradation, mix out to meet the requirements of the base layer, grass and surface materials. The car can use the vehicle to carry the equipment to make the asphalt pavement repair process to complete a one-time. Since the success of research and development, has been in Shanxi and a number of high-grade highway to promote the application, received a good effect. As the main designer of the device, the author will be its main performance, structure and functional characteristics described below. !!"!car.!"# Hydraulic ramming hammer, hydraulic grasping 91 hydraulic pump station for hydraulic ho, bucket to provide hydraulic power. Hydraulic hammer for the use of road cutting machine, from the crushing effect; hydraulic ramming hammer for tamping the material, especially the pit dawning of the solid; hydraulic grab for stone, water stability and the machine to carry the lifting equipment.
Mixing shaft and synchronous gears
There is no doubt that high-grade roads, especially the highway repair, only the use of the application of multi-functional conservation machinery to complete, which is to ensure the construction quality and improve the efficiency of the only choice, but also to achieve highway management modernization and civilized construction of important guarantee and premise The Multi-functional integrated maintenance vehicles to repair the classification can be divided into hot and cold operations two. With the continuous development of science and technology, cold repair mode of operation with its many advantages increasingly praised by the highway engineering academia. And Shanxi Provincial Highway Bureau Jinzhong Branch and Shanxi Hualong Traffic Technology Co., Ltd. recently developed successfully It is mainly used for forced mixing of asphalt mixes and water stabilizers. For the base layer, the base of the hopper by the (hopper composition, and the surface of the different requirements of the ratio of stone, gravel, cement storage.
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The practical results show that the microwave heating has the characteristics of fast heating speed, uniform heating and large heating depth. By means of microwave heating, the microwave is used to improve the heating and maintenance of the vehicle. The cost of repairing pits is lower than that of traditional heat radiation heating integrated maintenance vehicles, and the measures taken by microwave heating integrated maintenance vehicles to prevent microwave leakage are introduced.
With the increasing mileage of expressway traffic in Fujian Province, the increasing age of the province, the current 11 only traditional radiation heating asphalt pavement repair car has been unable to meet the province's highway asphalt pavement maintenance needs. In order to ensure the smooth development of maintenance tasks, to ensure the safe and smooth flow of the highway, the purchase of new, suitable for the maintenance of the province's asphalt pavement integrated maintenance equipment has become a top priority. From August to November 2010, Fujian Expressway Maintenance Engineering Co., Ltd. introduced a microwave heating asphalt integrated maintenance vehicle in Longyan area conservation company trial, and the relevant performance indicators, the cost of the actual calculation.Road Repair Equipment - Doan Machinery
The Principle and Advantages and Disadvantages of Existing Asphalt Pavement Repair
Fujian Province Highway Maintenance Engineering Co., Ltd. to undertake Fujian Province, 2700 km highway maintenance tasks. Pavement pit repair task is mainly composed of 11 early asphalt pavement integrated maintenance vehicles to complete. The car on the asphalt pavement heating method for the heat radiation heating. The principle of heating: liquid liquefied gas after vaporization in the bottom of the heating wall to fully burn, heat through the refractory bricks blowing to the ground, intermittent heating, layers of penetration. This type of heating is actually a visible light in the pavement, because its conduction and convection accounted for a large proportion of radiation heat is small, easy to make the road was scorched or oxidized. It is not conducive to the recycling of asphalt mixture. The advantages of the thermal radiation heating method are: heating wall heat storage capacity, radiation temperature is high, thus ensuring sufficient radiation energy. Refractory brick work, the temperature reached more than 1000 ℃, the surface of a red, easy ignition, and the temperature in the work area more uniform. The main drawback is that, despite the use of intermittent heating, it is not easy to control the surface temperature of the heated pavement. Because a large number of visible radiation is very concentrated, energy radiation fluctuations, the peak temperature of the road again and again, not easy to balance. Refractory bricks have lower strength, higher cost, continuous high temperature use and easy to damage after vibration, increase the use of cost. Refractory brick replacement professionals and professional tools, maintenance is very convenient.
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