As a key engineering machinery equipment, the grader is widely used in road construction, site leveling, farmland transformation, mining engineering and other fields. With its efficient operating capacity and flexible operating performance, it plays an irreplaceable role in earthwork and surface treatment. With the acceleration of urbanization and the growth of infrastructure construction needs, the technology of graders continues to improve and its functions are becoming increasingly diversified.

Ⅰ Basic concepts and structural composition of graders

1.1 Definition

Graders, also known as scrapers or bulldozers, are a type of engineering machinery equipment used to finely level the ground. Its main function is to flatten, level, and repair the ground through an adjustable scraper installed between the front and rear wheels to achieve the terrain and elevation required by the design.

1.2 Structural composition

A typical grader consists of the following main parts:

Chassis system: including frame, drive axle, steering axle, etc., is the basic structure of the entire machine.

Power system: usually a diesel engine is used as the power source to provide sufficient driving force and operating capacity.

Transmission system: transmits the power of the engine to the drive wheel, and realizes speed regulation and direction control.

Working device - scraper system: This is the core component of the grader, mainly including the main scraper (blade), lifting mechanism, tilting mechanism and slewing mechanism. The scraper can realize a variety of action combinations such as up and down lifting, left and right tilting, and rotation to meet different operation requirements.

Hydraulic system: used to control the actions of the scraper, such as lifting, tilting, and rotating, which is the key to achieving precise operation.

Cab and control system: provides a good operating environment for operators, and integrates various operating handles, dashboards and electronic control systems.

Ⅱ Working principle of grader

The working principle of the grader is based on the motion control of the scraper. The position, angle and height of the scraper are adjusted by the hydraulic system, so that it can continuously scrape and level the ground during the movement. Its basic operation process is as follows:

1. Set the target elevation and slope: set the required ground elevation and slope according to the construction drawings or on-site measurement data.

2. Adjust the scraper position: adjust the scraper to the appropriate angle and height through the hydraulic system.

3. Uniform forward operation: During the forward movement of the grader, the scraper will scrape off the raised part of the soil and push the excess material to a lower place or collect and transport it away.

4. Multiple round trip operations: Repeated scraping operations are performed as needed until the flatness and slope required by the design are achieved.

5. Auxiliary tool coordination: Sometimes it is necessary to cooperate with equipment such as rollers and loaders to complete compaction, transportation and other tasks.

III Application scenarios of graders

1 Road engineering construction

In the construction of highways and urban roads, graders are mainly used for leveling operations of the base layer and cushion layer to ensure the uniform thickness of the pavement structure layer and smooth drainage, laying a good foundation for the subsequent paving of asphalt or concrete.

2 Farmland water conservancy construction

In terms of land reclamation, irrigation channel excavation, farmland leveling, etc., graders can quickly and efficiently complete the leveling of large areas of land, improve land utilization and agricultural production efficiency.

3 Mining and open-pit mining

In mining operations, graders are used for road maintenance, platform leveling, spoil dump preparation, etc. in mining areas to ensure the safety of heavy vehicles.

4 Construction site and site leveling

In the early stage of construction, graders are used to clean up the construction site and level the foundation to create good conditions for subsequent construction.

5 Winter road maintenance

In cold areas, graders can also be used to remove snow and repair ice to ensure winter road traffic safety.

IV Advantages of Hengwang graders

Technological innovation: Hengwang Group continues to pursue technological innovation, and its products usually incorporate the latest scientific and technological achievements, such as hydraulic transmission and hydraulic control technology, which makes Hengwang graders have advantages in power output and operational flexibility.

Environmental protection and energy saving: Hengwang graders adopt advanced design concepts and technologies, such as high-efficiency and energy-saving engines, combined with innovative concepts of environmental protection and energy saving, which helps to reduce energy consumption and reduce environmental pollution.

Durability and reliability: Hengwang graders are manufactured using high-strength materials and precision processes to ensure that the equipment can withstand harsh working environments and provide long-term and stable services.

Versatility: According to different operation requirements, Hengwang graders can be equipped with a variety of accessories, such as different scraper types or ripper, to adapt to various complex construction conditions.

Intelligent control system: In order to improve work efficiency and precision, Hengwang graders may integrate advanced electronic control systems, including automatic leveling systems, GPS navigation, etc., to make operation easier and more accurate.

Good market adaptability: Hengwang's products have been widely used in earthwork operations in many fields such as airports, roads, and mines, proving that its products have strong adaptability and competitiveness in the market.

After-sales service support: As a well-known enterprise, Hengwang Group may also provide comprehensive after-sales services, including technical support, maintenance and training, etc., to provide users with all-round support.