Thursday, January 10, 2008

Advancements In Heavy Equipment

There is a rapid advancement in the field of heavy equipment technology. Unlike the earlier days now, using global positioning satellite technology, heavy equipment placed anywhere in the world can be checked or diagnosed. Finding the right new equipment suitable is also getting to be a big challenge. With lot of options and features to consider, it will be an overwhelming chore.

Among the heavy equipment, backhoe-loaders are used in small demolitions, breaking asphalt, construction, digging holes/excavating, light transportation of building materials, powering building equipment, and paving roads. To smash concrete and rock, tools such as breakers can be used instead of the backhoe bucket. To empty its load more quickly and efficiently, some loader buckets have a retractable bottom. Grading and scratching off sand is executed with retractable-bottom loader buckets. The front assembly may be permanently mounted or have a removable attachment. Often other devices and tools replace the bucket. In order to mount different attachments to the loader, the backhoe loader must be equipped with a tool coupler. Find more info at http://www.heavy-equipment4u.info

Bulldozers are heavy equipment but they are also large and tracked engineering vehicles. With the mobility and ground hold given by the tracks they can move through very rough terrain. Swamp tracks in bulldozers are merely extra wide tracks.

The three distinct assemblies of compact hydraulic excavators are workgroup, undercarriage and house. The boom, arm or dipper and attachments such as bucket and breaker are parts of the workgroup of a compact hydraulic excavator. They are connected to the front of the house structure of the excavator via a swing frame that allows the workgroup to be hydraulically pivoted right or left to achieve offset digging for trenching.

Harvesters today do practically all of the commercial felling in Sweden and Finland and they were developed in these countries. Harvesters work best in less difficult terrain while clear cutting areas of forest. Small and very agile harvesters are used in the Nordic countries for thinning operations.
An iron or a cylinder placed between two metal rods so that it is able to freely slide down and up are included in the pile drivers. A pulley system is used to raise the cylinder which may involve the use of manual labor, steam or hydraulics. Small explosions in the chamber are used in modern pile drivers to raise the cylinder.

A piece of heavy equipment used for earthmoving in civil engineering, is a wheel tractor-scraper. A vertically moveable hopper in the rear part with a sharp horizontal front edge does the scraping. Raising and lowering of the hopper is done hydraulically. The front edge cuts into the soil like a cheese-cutter when the hopper is lowered.

Lucy Bartlett is a proud contributing author. For more info visit Heavy Equipment or Catapillar Construction Equipment

Labels: , , , ,

Monday, December 3, 2007

Construction Equipments - We Cannot Live Without It


We would have been still constructing the Panama Canal but for the modern gigantic construction equipments. These Herculean machines made life easy for us by their enormous strengths and capacities for long drawn heavy duties under all torturous conditions.

To think that these engineering marvels work for reclaiming lands from bays, striking piles into the hard sea beds or drilling tunnels deep below the sea beds (Trans European Tunnel connecting England to France), is mind boggling. The list can go endless but for the scope of this article which is limited.

Equipments to Suit All Needs Construction equipments may be classified as per needs and further by capacities.

1.Excavating and Earth moving: These gigantic machines are hydraulically operated to safeguard from shock failures. These are the first machines to be employed for preparing the construction sites. Land leveling by digging and cutting terrains are done by excavators of appropriate capacities which run into 1000s of HP. Basic earth movers include dozers, tippers and loaders.

2.Concrete processors: Batch or continuous concrete mixers are computer programmed for consistent precise mix. These are stationed permanently near the site or in the factory depending on convenience. Small batch mixers of less than one quintal capacities are portable. The concrete is transported from far off plants in transit mixers of minimum capacity 6 cubic meters by volume. Concrete is poured to the spot using concrete pumps.

3.Bar bending machines: Small high torque generating bar bending machines are handy in bending and forming construction steel bars. These are available in various specifications.

4.Rollers and compactors: Rollers are employed to compact the ground after dozers have leveled it. Some rollers are also equipped with vibrating compactors eliminating the need for separate compacting. For small areas like indoors vibrating plate compactors, which generate up to 1000kgf maybe used. These are just about the equipments fundamentally required for construction of homes and offices.

Road Construction For road construction, depending on whether the road is being asphalted or concretized, the equipments change. Asphalt mixers and asphalt pavers take-up the job of road laying to perfection. Concrete road pavers, although work on similar principle, can't finish the road-laying as concrete needs setting time.

There is a need for faster laying technique. Road surface finishing is by a technique called VDF, which stands for vacuum dewatered flooring. Smoother finishes are given by power trowels and anti skid finishes by brooms, mechanized or manual. Roads such as speedway lanes would benefit greatly from this technique. Now shouldn't we pay tribute to these kind machines?

NamSing Then is a regular article contributor on many topics. Visit his other websites Construction Equipment, CCTV System and Research Hub

Labels: , , ,