The impact type compactor is a kind of machine used for impact roller compaction. The development and application of impact roller accelerates the development of compaction technology in geotechnical engineering and provides a new idea for solving the hidden danger of roadbed quality. The following Xiao Bian will give you an introduction to the basic structure and application of the impact compactor. Let's take a look. Impact compactor basic structure 1, tractor The tractor of the 5YCT20 Impact Compactor is designed by Sanming Heavy-Duty Machine Co., Ltd. and the front and rear frames are hinged. The front frame is equipped with an engine, a torque converter, a front axle and a cab. 2, crushing and compacting device The crushing and compacting device (ie, the impact device) is mainly composed of a compaction wheel assembly, a frame, a connecting rod frame, a pendulum rod, a walking wheel, a joint head, an anti-rotation device, and a hydraulic cylinder. Impact Compactor Applications 1. The compaction of impact roller is based on the combination of impact force, vibration force, and static pressure: (1) Impulse that occurs when the center of mass of the compactor falls at the highest point; (2) Vibration caused by the compaction wheel rotating and jumping at a certain speed; (3) The static weight of the compaction wheel works when compacting the soil base during rotation. The impact compactor is calibrated with its potential energy at rest. This potential energy generates momentum during movement, which translates into large impact forces. For example, the mass of the 25T3-25KJ impact compactor is 15t, its potential energy E is 25KJ and the impact force is 250t, which is 16 times that of the compaction wheel. 2. Application of subgrade construction The vibration amplitude of the impact compactor is up to 0.22 m, its frequency is 2 Hz at normal speed, and the amplitude is generally 2 mm. Large-amplitude vibration increases the mass of the vibration soil or other fillers involved in the vibration, thereby increasing the depth of compaction and compaction. The effective depth affected by impact compactors is 2-3 times that of ordinary heavy-duty vibratory rollers. The impact speed of the compactor is 12-15km/h, and the number of roller compaction passes varies from 10-40 times. The impact compactor has a productivity of 10,000 m2 per shift and its efficiency is 5 times that of a vibratory roller. Impact compaction machine (rolling pressure from 20 to 40 times) The project cost ranges from 4 to 10 yuan per m2, which is about 77% of the vibratory roller. The impact compactor plays a role of rubbing and drainage in the subgrade construction, relaxing the requirements for water content, and its measures: one can increase the sandstone layer; secondly, compacting with a small impact roller such as a five-side wheel; The pressure stops and the sun is pressed for a few days; the fourth step is to open the surface with a plow. Actually confirmed, it can be relaxed to 7 percentage points in some viscous soils. Each time the impact compactor presses, the ground is smashed into a wavy shape. After compaction for 3 to 5 times, it must be leveled with a grader or a bulldozer, otherwise it will reduce the speed of stamping and affect the stamping effect. 3, the application of cement pavement crushing The total mileage of cement concrete pavements built in China's road and municipal industries has reached more than 220,000 kilometers, making it the country with the most cement concrete pavements in the world. However, due to poor quality control, many cement pavement bases and panels do not meet the design requirements. Moreover, the traffic volume increased rapidly and the overload phenomenon was serious, so many roads suffered serious damage. Insufficient compaction of the roadbed, significant instability of settlement, and no penetration of drainage structures in the cement pavement structure, the road service life will be shortened exponentially. After the cement concrete pavement is damaged, the method of repairing the overburden is used. The original road surface must be broken first, and the impact compactor can accomplish this task well. The impact not only eliminates the possibility of reflective cracking, but also makes aggregates intricate between the broken blocks. The integrity and strength of the old board and the roadbed are significantly improved, which fully meets the requirements of the cover layer and the base layer. Broken, stable and expanded asphalt layer is a widely used method to repair old cement pavement. It has the advantages of short construction period, low cost, and low traffic impact. Break the solid cement pavement with impact compactor, the maximum force reaches 100-250t. According to the difference in pavement structure and damage degree, generally 3-5 cracks start, 5-15 times is a settlement, 20 times can meet the technical requirements, and its efficiency is 4 times the traditional compaction process. The impact and compaction with the impact compactor represent the new development direction of this technology. As the use of impact compactor for cracking and stable construction of the cement pavement can not interrupt the traffic, and the cost, speed, and effect are good, it has been widely used in China in recent years. Our unit has good results in the construction of the Beijing-Shanghai high-speed Taihua section. In addition, it is used in the reconstruction of Weihe Street in Tai’an City, and has been fully tested to meet technical requirements. From the point of view of use, compaction and filling, the soft base section road surface settlement is greater, and the settlement in the excavation area is smaller. With the constant improvement of the impact compactor, it will inevitably play a more important role in the construction of roadbed and road surface. The above is a brief introduction for Xiaobian. If you want to know more related information, please continue to pay attention to Qijia Consulting. More exciting consultation, please stay tuned. Masonry structure Ball Valve,Mini Ball Valve,Two Way Mini Ball Valve,Stainless Steel Ball Valve Ningbo Wenhan Fluid Equipments Co., Ltd. , https://www.wenhanvalves.com
