Construction Machine Blog

There are various brands and sizes of excavators available in the market. All of them can be divided into two types. One is the Back Hoe loader; and the other is the wheel loader. These two different types of excavators are not of varied shapes, but more importantly, of different functions and applications. In order to help readers make a wise choice of purchasing a excavator, I want to address a brief introduction of the two types.

Excavators

Backhoe Loader

Backhoe loader, also called a Loader backhoe, is a type of excavator which consists of a tractor, front shovel bucket and small backhoe in the rear.

As the name implies, it has a loader assembly on the front and a backhoe on the back. When both the loader and the backhoe are permanently attached it is almost never called a tractor, not generally used for towing and usually does not have a PTO. When the backhoe is permanently attached, the machine usually has a seat that can swivel to the rear to face the hoe controls. Removable backhoe attachments almost always have a separate seat on the attachment itself.

Due to its relatively small size and versatility, backhoe loaders are generally used in the urban areas where there is not enough space available for performing a construction. In small constructional projects such as building a small house, fixing city roads etc, backhoe loader can be used efficiently to enhance the overall conditions. Its tiny size and flexibility have made it immensely popular in the market. If it is about repairing a large construction, it is very easy and efficient to maneuver in that particular purpose.

Apart from that there are other areas where it can play an important role. Making road can be done easily if its help is taken. The transportation problem of the building equipments can be solved very easily if one uses this excavator for that purpose. Further it has an advantage of connecting various attachments for performing various operations. Whether it is the grapple, a stump grinder, auger or grapple, it can be attached with them without wasting a huge amount of time. In fact it is this versatile nature that made it nonpareil in the market.

 

Backhoe Loader

Wheel Loader

Wheel Loader is a front end loading machine. Wheel loaders dig and do secondary loading as well. Wheel loaders which do only secondary loading are called Pay Loaders.

The Wheel loaders are classified according to there bucket size and operating weight. The bucket size ranges from 1 cum upwards. The Wheel loaders can be tyre mounted or track mounted. The more popular version is the former, tyre mounted. .

The Wheel loaders are very versatile and can be engaged in construction works, ranging from road work, plant loading, hopper and wagon feeding, stevedoring and mineface excavation.

A Wheel loader typically has semiautomatic or automatic transmission with automatic gear sifting. The power train will include engine, transmission, related propellar shafts and powered axles at both front and rear.

A typical hydrolic curcuit for implimentation will include fixed/variable displacement pumps, controll valves, and actuators for boom, arm and bucket operation. Normally the steering curcuit is kept separate from the impliment circuit

Wheel Loader

Of course, there are many other categorizations according to different standards. But the above division is the basic one, which I sincerely hope can be of some help for you dear readers.

Tags: excavator, types

This entry was posted on Monday, August 17th, 2009 at 3:22 am and is filed under Excavators. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.