Mini excavators: special small machines
The use of standard earthmoving mechanisms for construction works and various tasks in public utilities in limited area conditions is difficult or completely impossible. You can solve the problem by using special machinery – such as mini excavators . Manufacturers produce a wide variety of models of these devices.
Design specialty of mini excavators
The compact excavator is an earthmoving machine that weighs up to 10 tons. Mini excavators differ in size, functionality and technical characteristics of complete machinery. Depending on the type of chassis, the mini excavators are divided into tracked and wheeled.
Tracked mechanisms are designed to work in off-road conditions, on loose, swampy and sandy soils. They differ in the increased passage, universality and reliability. The track base increases machine stability, working volumes and tractive power.
Crawler excavators cannot move autonomously on public roads, they are delivered with the help of special vehicles. Therefore, when choosing a mini excavator , it is advisable first of all to pay attention to the dimensions and weight, as they depend on the way in which the mechanism is transported on the work area. Attention should be paid to the Bobcat models of the E series, for example E19 with a self weight of 1885 kg, which can be transported in a conventional trailer. And the E20 or E35 models will allow you to work close to the walls, thanks to the zero exit of the cabin.
Among the compact tracked mini excavators with full rotation, the XCMG model of the XE series is very popular. These are cheap Chinese machinery adapted to local conditions. The range of compact tracked machinery also includes: Sany , Wacker Neuson , Doosan and other models.
Compact wheeled excavators are mounted on pneumatic or automotive chassis. The main advantage is the high speed of movement, independent movement. The wheelbase expands the range of work performed and increases the maneuverability of the machine.
For example, Liebherr wheeled models are characterized by: weight 11-27 tons, engine power from 65 to 135 kW. The Litronic system is responsible for the electronics and hydraulics, regulates and controls all parts of the machine. The A-314 Litronic mini excavator features hydraulic boom adjustment. Rotated 180 °, the measurement of this model is 4.53 meters. Among the wheeled models can also be identified: Volvo EW, Mecalac 12MXT, Komatsu PW.
The presence of accessories extends the use of mini excavators . Among such accessories can be: a bucket of optimal width, hydraulic shears, a drill to drill, a hydraulic vibro rammer , a hydraulic hammer, pliers and other specialized devices.
Application, advantages and disadvantages of mini excavators
The machines are used in construction, housing and communal services. This is the execution of works within the limits of dense residential development (laying trenches, digging wells). And also – demolition of divisions and enclosures inside buildings, garden and park works (removal of stones from the territory, loosening of soil, preparation of pits for planting trees) and clearing of yards.
Mini excavators are also used in the construction of summer cottages and the creation of artificial lakes. In private homes they are used to dig sewer holes, toilets and silos. In the urban economy, such special machines are especially indispensable. Gas workers, electrical engineers, signalmen, road, rescue and water services can do their jobs in neighborhoods and streets without stopping traffic.
Regardless of the model, technical characteristics, manufacturer, compact excavators have the following advantages:
- Maneuverability thanks to reduced size and weight.
- Universality (possibility of optional accessories for different applications).
- Reliability.
- Ease of control.
- Economy.
- High ability to pass over difficult areas of tracked models. The use of rubber tracks eliminates damage to the road surface.
- Relatively low cost.
The disadvantages of mini excavators include insufficient force at the edge of the bucket and a small digging depth. In tracked models, among the disadvantages, it is worth noting the low speed of movement.
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The article Mini excavators: special small machines comes from ScenariEconomici.it .
This is a machine translation of a post published on Scenari Economici at the URL https://scenarieconomici.it/miniescavatori-macchine-speciali-di-piccole-dimensioni/ on Mon, 27 Jun 2022 22:01:02 +0000.