Types of road loaders
In principle, it can be said that loaders are placed in one of the categories of giant road construction machines, which are widely used in construction works to carry mass of materials (such as soil and stone), loading trucks, digging, digging and Sometimes leveling (as a bulldozer) is used. Unlike scrapers, which are used for loading and carrying at the same time, loaders should always be used together with transfer machines such as trucks.
Basically, there are two types of loaders installed on the tractor chassis:
Chain loader : Chain wheel loaders exert little pressure on the soil below them. This type of machine, having advantages such as good buoyancy and suitable traction power, can perform well in soft and swampy lands where rubber wheel loaders do not work well. Also, the performance of these devices on stony ground is very suitable compared to the type of rubber wheel that can be severely damaged. Chain wheel loaders have a suitable design for maneuvering in limited environments. The transfer of these loaders between different projects requires a trolley.
Wheel Loader: Wheel loaders have a higher speed than chain wheel loaders and perform much better than them on hard terrain. They can move on built roads and be transported in relatively short distances without the need for a trailer.
In terms of size, they have a wider variety than chain wheel loaders, and therefore can be chosen more compatible with the needs, as well as the cost of maintenance. are less in wet lands and sandy soils that have abrasive properties for chain wheel loaders. The pressure exerted on the ground by tires can be changed by changing the amount of tire inflation, but in any case, working by these loaders in Wet and muddy lands are problematic due to high pressure, and their loading capacity will be less in swampy lands compared to the chain wheel type. Of course, there are special wire chains to protect the tires that can be used to increase the friction of the tires.
In rocky terrain with sharp corner stones, there is a possibility of the tires being vulnerable, of course, a new type of tires with treads They are produced very thick, which allows working in rocky areas. Rubber wheel loaders have less traction than chain wheel loaders of the same weight, and as a result, their useful power in digging soil and going up or down slopes is limited. Installed on a back-breaking tractor, they can have good maneuverability characteristics in small places. The back-breaking nature of the loader allows an angle of up to 35 degrees in the horizontal plane of the machine axis between the two main parts of the machine.