The use of crawler excavators must understand its operating procedures and maintenance methods. Then, how to maintain a crawler excavator? Preparation before work Carefully read the relevant instruction materials of the excavator, and be familiar with the use and maintenance of the vehicle you are driving. Learn more about the tasks on the construction site,…
What are the types of cranes？ At present, people are accustomed to classifying lifting machinery into three categories: series lifting equipment, crane, and lift elevator. Light and small lifting equipment It mainly includes a jack, pulley block, hoist, winch, underslung mono-rail system, etc. Crane There are many types of cranes, so there are many classification…
A crane is a kind of machine equipment that lifts, lowers, or lifts and transports heavy objects by means of lifting hooks or other spreaders in an intermittent and repetitive manner. Crane is a kind of intermittent action handling equipment that is mainly used for vertical transportation and doubles as short-distance horizontal transportation. Its working…
What does a motor grader do? Earth-moving machinery that uses a scraper to level the ground. The scraper is installed between the front and rear axles of the machine and can be lifted, tilted, rotated, and extended. The action is flexible and accurate, the operation is convenient, and the leveling site has high precision. It…
The performance requirements of the grader on the hydraulic oil In hydraulic transmission, hydraulic oil is not only a medium for transmitting power, but also a lubricant, and it also plays a sealing role in some components. The heat in the system is also diffused through the oil, so it also plays a role in…
The main function of the motor grader Classification of graders There are two types of motor graders, towed and self-propelled. Graders are classified by wheels Six-wheel grader Four-wheel grader Graders are classified by rack structure Graders are classified by scraper length or engine power Light graders, medium graders, heavy graders Graders are classified by operation…
In the construction of highway engineering, the road roller is an indispensable construction machinery. Whether it is the compaction of the roadbed, the base layer or the surface layer, the road roller is inseparable. As one of the main compaction equipment in the current road construction, the vibratory road roller is generally It is divided…
How the road roller works in the bend When rolling curves or intersections, it is easy to generate shear forces on the laminate. There are many factors affecting the shear force, mainly including line pressure, wheel diameter and wheel width of the road roller; the type and composition of the mixture; the rolling speed; the…
How the road roller rolls the transverse seam of the road How road rollers roll over road seams. When paving asphalt mixture pavement with a paver, for long roads, it is impossible to complete the paving at one time, and it needs to be paved in sections. For each paving section, a wooden board with…
The rolling of asphalt mixture pavement is usually divided into three stages: initial rolling, supplementary rolling, and leveling rolling, the purpose of which is to improve the comprehensive performance of the flexible pavement. Roller initial rolling of asphalt mixture pavement In the initial rolling, it is best to use a tandem static rolling machine, and…