Showing posts with label backhoe excavators. Show all posts
Showing posts with label backhoe excavators. Show all posts

Wednesday, August 3, 2016

Park Your Excavator Safely in Rainy Season



In rainy days, the heavy rain may cause some geological disasters such as landslide or debris flow. Therefore, we should park the excavator in correct way to protect your safety and property.


Sometimes, the construction work has to suspend due to the heavy rain. Then don’t park your excavator on the jobsite. Transfer the excavator to a safe place. Generally speaking, the excavator needs to work in a place for several days or even longer. As for the most common earthwork, operators excavate the soil from a mountain. It is a very dangerous act to park the excavator on the mountain, since the hillside has been loose and the formal stress structure has been destroyed that is prone to collapse. Especially after the erosion of water, the probability of collapsing has greatly increased. Park the excavator under the tree is not a good choice, since it might be struck by lightning or gale. Then where is a safe place? Choose a solid and firm road to park, such as cement or pitch road. 

The posture of placing an excavator also has a knack. After consulting many experienced operators, the best posture is to stretch the boom and let the bucket grovel on the ground. This posture can best protect the hydraulic cylinder’s core pulling from rains or artificial damage. It is also the best posture to change the hydraulic oil, which can recollect the hydraulic oil to the hydraulic oil tank as much as possible. 

Before you leave the heavy excavator, cut the whole machine’s power supply to avoid the electric leakage. Even though, we can’t avoid some natural disaster, but we can try to avoid the loss through our good habits.

Tuesday, July 12, 2016

Contrastive Analysis of Wheel Excavator and Crawler Excavator





Wheel excavator moves easily, and mainly for some small project in the city, cannot be used in very soft ground. Crawler excavator cannot move on the road, but can work in some muddy ground, and will not be trapped. Crawler excavator’s machine body is bigger and work efficiency is higher than wheel excavator.
Advantages: Efficient for large contact ground area, muddy construction sites, wet lands and other area that easily get stuck; crawler excavator’s comparative heavy self-weight makes it go various more extensive areas; for the crawler belt made of medal ware, the crawler excavator is also qualified to work in those inadequate operating conditions.
Disadvantages: Comparatively speaking, crawler excavator needs more investment, and its movability is not that good with the fastest designing speed being 5-7KM/H, and long distance movement can only depend on dray.
Wheel excavator:
Advantages:  less investment, faster speed with normally 40-50KM/H.
Disadvantages: narrow using range, mostly used in road and city engineering projects. It cannot be operated in mines or muddy wet terrain, and the climbing ability is not very good. So for now, most customers are tend to choose crawler excavators.

Saturday, June 11, 2016

excavator work in road construction



Large excavators are one of the major machines used in earthwork construction, comprised of power unit, transmission system, traveling system, rotary structure, control mechanism, electrical and working devices. The working device of excavator can be attached with dozens of different tools according to various working conditions, thus the excavators are suitable for use in many construction machinery jobsites including road, railway, buildings, mining, water engineering and national defense etc.

At present, backhoe excavators are the major equipment used in road construction to excavate trenches and fill embankment, and usually a backhoe has to work closely with an autodumper. 


There are basically two modes of backhoe excavator operation while digging a trench. One is to dig the trench from one end while driving backward to another with an auto-dumper followed aside, the backhoe can unload the earth to the dumper within 40° to 45° swing radius. If the trench width is double the maximum excavating radius, then the backhoe has to unload the earth with a swing radius of 90°.

Another is to dig at the side of trench with a dumper at the trench end, in this way, the backhoe can only unload the earth within a swing radius less than 90°, and the trench width is no more than the excavating radius of the backhoe.