Archive for the ‘construction equipment’ Category
Wednesday, December 31st, 2008 |
In civil engineering and surface mining heavy construction equipment are used. An excavator, also called a 360-degree excavator or digger, sometimes abbreviated simply to a 360, is an engineering vehicle consisting of a backhoe and cab mounted on a pivot (turntable is a more apt description) atop an undercarriage with tracks or wheels. The term excavator is sometimes used as a general term for any piece of digging equipment.
Roles of Excavators
Excavators are used in many roles:
1- Digging of trenches, holes, foundations
2- Demolition
3- General grading/landscaping
4- Heavy lift, e.g. lifting and placing of pipes
5- River dredging
6- Mining, especially, but not only open-pit mining
7- Brush cutting with hydraulic attachments
Varieties of Excavators
Excavators come in a wide variety of sizes. The smaller ones are called a mini-excavator or compact excavator. One manufacturer’s largest model weighs 84,980 kg (187,360 lb) and has a maximum bucket size of 4.5 m³ (5.9 yd³). The same manufacturer’s smallest mini-excavator weighs 1470 kg (3240 lb), has a maximum bucket size of 0.036 m³ (0.048 yd³) and the width of its tracks can be adjusted to 89 cm (35 inches). Another company makes a mini excavator that will fit through a doorway with tracks that can be adjusted to only 70 cm (28 inches) wide. Excavators for sale comes with wide variety like;
1- Compact excavator
A compact hydraulic excavator is a tracked or wheeled vehicle with an approximate operating weight of 6 metric tons (13,228 lbs). It generally includes a standard backfill blade and features independent boom swing. The compact hydraulic excavator is also referred to as a mini excavator.
The compact hydraulic excavator is somewhat unique from other construction equipment in that all movement and functions of the machine are accomplished through the transfer of hydraulic fluid. The compact excavator’s work group and blade are activated by hydraulic fluid acting upon hydraulic cylinders. The excavator’s slew (rotation) and travel functions are also activated by hydraulic fluid powering hydraulic motors.
2- Dragline excavator
Dragline excavation systems are heavy equipment used in civil engineering and surface mining. In civil engineering the smaller types are used for road and port construction. The larger types are used in strip-mining operations to extract coal and these are amongst the largest mobile equipment (not water-borne), and weigh in the vinicity of 2000 metric tonnes, though specimens weighing up to 13,000 metric tonnes have also been constructed.
A dragline bucket system consists of a large bucket which is suspended from a boom (a large truss like structure). The bucket is maneuvered by means of a number of ropes and chains. The hoistrope, powered by large diesel or electric motors, supports the bucket and hoist-coupler assembly from the boom. The dragrope is used to draw the bucket assembly horizontally. By skillful maneuver of the hoist and the dragropes the bucket is controlled for various operations.
3- Bucket-wheel excavator
Bucket-wheel excavators are heavy equipment used in surface mining and civil engineering. The excavation component itself is a large rotating wheel mounted on an arm or boom. On the outer edge of the wheel is a series of scoops or buckets. As the wheel turns, the buckets remove soil or rock from the target area and carry it around to the backside of the wheel, where it falls onto a conveyor, which carries it up the arm toward the main body of the excavator. Additional conveyors then may carry it further; in some cases, several long conveyors are placed end-to-end, each supported by a large vehicular base.
Especially large bucket-wheel excavators, over 200 meters long and up to 100 meters in height, are used in German strip-mining operations, and are the largest earth-movers in the world. These tremendous machines can cost over $100 million, take 5 years to assemble, require 5 people to operate, weigh more than 13,000 tons, and have a theoretical capacity of more than 12,000m³/h. Specifically, the RB293 bucket wheel excavator manufactured by MAN Takraf is recognized by Guinness World Records as the largest land vehicle.
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Wednesday, November 19th, 2008 |
Those who are “do-it-yourselfers” know that the best and least expensive way to accomplish a task is to pull out the work gloves and get after it. But does that include projects that require construction equipment? There are several things to ask yourself before you decide whether to rent (or buy) construction equipment or to call in the pros.
Two of the most important things to consider are cost and size of the project. Have you always wanted a pond? There’s really nothing stopping you from building one if you have enough land and there are no zoning laws restricting it. That’s going to be a pretty big project and you might be surprised how much earth has to be moved to create even a small pond for watering livestock.
Think you’re not qualified to operate construction equipment? You might be right. If you’ve never operated a bulldozer, you’re going to quickly find out that those professionals only make it look easy. There’s a lot to learn before you can successfully move dirt the way it’s supposed to be moved. But even if you know how to run a bulldozer or other construction equipment, you may not have enough knowledge to put the equipment to proper use.
If you know anything about ponds, you know that just digging a hole isn’t going to get you a pond that holds water. If you know how to go about the sealing process, whether you should have a drain and how to choose the best place for your pond, you may very well be in a position to rent a bulldozer and build your own pond.
Think you’re going to need a series of ponds? In that case, you need to carefully consider how long it will take you to do the digging and get a good estimate for the cost of renting the construction equipment you need for the entire project. Don’t overlook transportation fees, especially if you plan to only use the equipment for a few days, send it back and then rent again. Don’t overlook your time. If you’re taking time off work, figure that into the cost of renting.
Compare that to the cost of hiring someone who owns the construction equipment to get the project completed. If it’s a big project, consider purchasing your own construction equipment. After you’re done, you can always sell the equipment to regain at least part of your investment.
Whether you’re talking about a bulldozer for a major earth-moving project, a Ditch Witch to lay cable or water lines, or a jackhammer to bust up a concrete pad, you may be surprised at how affordable renting construction
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Thursday, November 6th, 2008 |
While talking about Salvage Construction Equipment for sale we find that the modern consumerist society is busy in utilizing the old things on new ones for saving money. Some of the important parts of some heavy equipments, which are worn out due to extensive use are being replaced by similar saved parts form other equipments.
By using the Salvage Construction Equipment we not only save the money of buying the costly equipment again, but it also saves the equipment form becoming a piece of unused thrown goods. After the World Wide Web came into existence, people now can search for the specific part which is being tampered, through the use of internet and transfer the equipment again in running condition.
Salvage Construction Equipments can be found in any part of the world especially in the salvage yards where people store most of the heavy equipment parts that may be needed by the customer. Both the buyers and the sellers benefit form those goods and this has become a good business because of the huge demand for spare goods.
Before going for the Salvage Construction Equipments parts one must be very careful in selecting the correct part for the equipment and they should also see if they are in working condition, otherwise they will fall in deep trouble of loosing the money and also the part will be recognized as a junk in the godown. Some people say that if one is lucky then only they will find the exact match for their equipment in the huge pile.
There are some specialized stores which deals mainly in Salvage Construction Equipments. Other store may exist but we will find our exact piece only on those specialized store which deals only in heavy articles. The heavy salvage parts mostly includes recycling of automobile parts – transmissions, engines etc. – and heavy equipments – backhoe loader, tractors, hydraulic pumps and dozer etc.
Some store has an electronic inventory system which tells the customer exactly where to find his tool. The stores dealing in Salvage Construction Equipments has a unique feature of not throwing away any goods because in this world any type of parts may be needed by people and till date no part has remained.
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Sunday, October 19th, 2008 |
Machinery categorized as used heavy equipment for sale include large vehicles and mobile equipments used in industrial activities such as construction, lifting of heavy material, tilling of land, digging of trenches for drains, laying of pipelines and paving of roads.
A heavy equipment technician is a skilled workman, who repairs and maintains heavy diesel engines, fuel, brake and transmission systems, electrical and other systems that are part of farm machinery, cranes, bulldozers, railcars, heavy dumper trucks, excavators, pavers and many other type of such machinery. His key objective is to ensure that the machines remain in top working condition and continue to function at peak levels for a long time in line with safety norms. In view of the advanced technology used in machinery these days, these expert technicians are required to be conversant with the use of computerized diagnostic equipment, tachometers, dynamometers, ohm meters, ammeters, voltmeters specialized tools like pneumatic wrenches, operating lathes and grinding machines. An ability to work with jacks and hoists, gas cutting and welding tools in addition to the use of common hand tools such as screwdrivers, pliers and wrenches is also essential. Knowledge in electronics, hydraulics and welding technology is considered mandatory to perform well in this field.
Generally, a heavy equipment technician works indoors unless the job position is that of a field technician. The latter is required to work onsite on machines that cannot be moved to a shop. Field technicians are exposed to outdoor conditions, which include hostile weather and inadequate arrangements for meals or rest. The job involves lifting of heavy parts and carrying them in awkward positions. Though, by adhering to safety norms and working in well lighted, ventilated and heated work areas, serious accidents can be avoided, minor cuts, bruises, and burns are only to be expected in this job.
Working hours are generally 40 hours a week but might go up to 50 or even 60 hours if you are working in the farming sector during planting and harvesting seasons.
Although three to four years of on the job training earned by working as assistants under experienced technicians is considered sufficient, most employers prefer applicants who have completed a formal skill based program after graduating from high school. The candidate should be flexible with an aptitude for quick learning.
There are programs of one or two years duration leading to a certificate or an associate degree in diesel or heavy equipment mechanics. Such programs are offered by various community colleges and vocational schools. High school courses in automobile repair, physics, chemistry, and mathematics provide a strong foundation for a career as a heavy equipment technician. It is essential for technicians to be able to read and interpret service manuals in order to keep abreast of engineering changes.
Ideally, a combination of formal and on the job training equips a technician with the knowledge and skills typically required for the repair and maintenance of heavy equipment. Employment opportunities for heavy equipment technicians exist in large construction and mining companies, local and federal governments, agencies that sell farm equipment, garden tractors, railcar and locomotive manufacturers and other companies operating and maintaining fleets of such equipment. As per statistics compiled in 2004, the average hourly earnings of a heavy equipment technician in the US during the year 2003-2004 ranged between $17 and $20.
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Sunday, October 5th, 2008 |
Hoss Equipment Company has been a leading independent global dealer of large new and used heavy construction and mining equipment. We provide new, rebuilt and used heavy equipment solutions for highway construction, mass excavation, landfill, quarry/aggregate, coal mining and other surface mining applications including precious metals.
Hoss sales professionals have more than a century of combined experience in the used heavy construction equipment and mining equipment industries and will provide you with the information you need, the equipment selection you expect and the “one company, one call, one total solution” peace of mind you deserve.
We specialize in medium-to-large units including crawler-tractors, off-highway dump trucks, mass and hydraulic excavators and shovels, wheel loaders, motor scrapers, motor graders, off-highway water equipment, and compactors. Whether you need a single piece of equipment or an entire fleet, we can provide you with reliable earth-moving equipment that can be custom configured with the features you need. Our inventory includes only the finest in earth-moving equipment from Caterpillar, Hitachi, Dresser, Komatsu Equipment, Euclid, Terex, Link-Belt, O&K, Klein, and more. We have the inventory you need in-stock today.
The Company’s fastest growing product line is the “Hoss Custom Rebuild”: a used machine rebuilt to like-new condition. By participating in the Hoss Custom Rebuild (HCR) program, you’ll receive the finest rebuilds in the industry at a fraction of the cost.
Each unit is rebuilt to stringent OEM rebuild guidelines;
Most rebuilds average just 60% of the price of a new machine;
Hoss Custom Rebuilds provide the same productivity as new machines; and
Most of our rebuilds carry a 1-year, 2,000 hour limited powertrain warranty.
Our extended warranties can be serviced throughout the world.
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Thursday, September 25th, 2008 |
A history of setting industry standards by letting consumers’ expectations for product performance and concerns for safety take center stage is Case’s real claim to fame.
What began as a company meant to build threshing machines has been transformed into a major manufacturer of construction equipment. The company’s longevity in a highly competitive arena reflects the success of their commitment to the industry and the consumer.
Legend details the company founder’s initial commitment to producing quality machines and setting the highest standards in customer care.upon hearing of a Case dealer’s denial of assistance to a Minnesota farmer with a broken thresher, A crowd had assembled to see the company founder attempt to repair the broken thresher. When it was found to be of such poor quality that repair was impossible, Jerome promptly doused the thresher with kerosene and set it on fire. The defective thresher was replaced with a brand new, fully functioning model the very next day.
Case started in the construction industry in the early 19th century manufacturing steamrollers and road graders.it was the world’s largest manufacturer of steam engines. as Case worked towards improving the safety and capabilities of farming equipment while developing innovative construction equipment for sale to the benefit of the industry and the consumer.
Sales in their agricultural equipment were equal to Case’s construction equipment’s performance. Separate divisions to better service each market were created through reorganization. Striving for the safest machinery designs throughout their history is another value reflected in Case’s history.they were the first to provide ride control on backhoes and the first to offer this feature on skid steers. Today, a huge variety of Case machines are sold and serviced in over 150 countries throughout the world. .
Insistence on staying American Made reflects Case’s genuine values, and has been recognized in national and international circles. Their backhoes were listed in Fortune’s”100 Products America Makes Best.” The company designs and makes its own engines, transmissions, gears and other components.
Striving for the safest machinery designs throughout their history is another value reflected in Case’s history.they were the first to provide ride control on backhoes and the first to offer this feature on skid steers.
In a profit-driven world of outsourcing and quality compromises, the success and continued commitment of a company to its consumers’ well-being and the industry it serves is an example more should model.
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Thursday, September 18th, 2008 |
Construction of the Wimmera Mallee Pipeline Project, which is a major investment in regional water infrastructure.
When complete, the new system will replace 17,500km of open, earthen channels with a piped water distribution system of about 8800km, reticulating water to about two million hectares and 36 towns throughout the Wimmera Mallee.
• a reliable, higher quality water supply to farms and towns across the region, 24 hours a day, 7 days a week
• water for rural, urban and commercial growth and development
• the return of 83,000 megalitres (ML) of water savings returned to government for a range of uses, including environmental water releases to rivers and streams
• up to 4000ML of water for 11 nominated recreational lakes and other local water bodies in the region with high conservation value.
The current Wimmera Mallee stock and domestic open channel system, including losses from farm dams and town storages, wastes enough water each year to fill the Melbourne Cricket Ground 49 times.
This yearly waste also equates to the amount of water needed to fill 103,000 Olympic-sized swimming pools.
Tim Page,the Komatsu PC30MR-2 excavators had been specifically purchased for the Wimmera Mallee project, which the company started work.
“They are ideal for this project because of their size, weight and power, so they’re pretty versatile,”
“On this project, we are looking after the installation of water meters for the on-farm works and we are doing the second stage of our contract which will probably run”.
In addition to the five PC30MR-2s that Mintern has recently taken delivery of, it also owns a Komatsu PC200-7, along with graders, backhoes loder and tip trucks.
As well as its current works on the Wimmera Mallee project, Mintern Civil carries out a wide range of work throughout the region, including road construction and maintenance, car parks, drainage works, on-farm works, and so on, with clients including local councils, VicRoads, water authorities and private organisations.
“We’ve found the Komatsu excavators to be good, reliable machines,”"And the support through Roger Bates, our Komatsu equipment local representative, has been very good.”
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Monday, September 15th, 2008 |
Volvo Construction Equipment for sale (Volvo CE) has received all necessary regulatory approvals for the earlier announced equity investment of 70% in Shandong Lingong Construction Machinery Co. (Lingong), a major construction machinery manufacturer in China and the deal is now closed.
“We are delighted to move forward in our partnership with Lingong. Lingong’s management, brand, R&D center, manufacturing base, distribution and suppliers are important elements in Volvo CE’s growth strategy”,”This cooperation secures Lingong’s future. Volvo’s advanced technology, management and global distribution will be key factors in the development of our company”.
Volvo CE has invested RMB 327.5 million in exchange for 70% of the equity in Lingong. In 2005 Lingong’s operating income was RMB 10.2 million on revenue of RMB 2 billion. The deal has no material impact on Volvo’s financial position.
Headquartered in Brussels, Belgium and with around 10,000 employees, Volvo CE develops, produces and markets equipment for construction and related industries. Its products include a full range of wheel loaders, hydraulic crawler and wheeled excavators, articulated haulers, motor graders, backhoe loaders, compact wheel loaders, compact excavators and skid steer loaders for sale. Volvo CE’s total sales amounted to SEK 34.8 billion.
Volvo CE started its Chinese hydraulic excavator manufacturing facility and has so far invested US$ 24 million into this Shanghai located operation. The company employs around 250 people in China.
Shandong Lingong Construction Machinery Co, Ltd is a major Chinese construction machinery manufacturer with total around 1,800 employees.its sales reached RMB 2 billion. Lingong develops, manufactures and markets a broad range of products including wheel loaders, excavators, backhoe loaders and road rollers. The company has built a nationwide distribution and service network with approximately 170 dealers, a significant network of service agencies and 10 parts outlets in China. Products are distributed across China and exported to Australia, the Middle East, Malaysia and Mongolia.
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Thursday, September 11th, 2008 |
Two very different kinds of backhoe-loader buyers dominate sales of full-sized machines (dig depths of 14 feet and larger), and their very different expectations may have polarized the hydraulic-system designs in this most popular of true earthmovers. The relatively small group of volume buyers from government agencies and large rental fleets are looking for a bombproof machine and tend to be price sensitive. Owner/operators and small-business buyers, while certainly motivated by value, are willing to pay a little extra for proven production-improving features.
In order to take market share in this relatively high-dollar, high-volume machine category, manufacturers must appeal to both groups. They’ve done so admirably with technologies that can be added to machines as standard equipment. For example, the most recent new backhoe designs (from Caterpillar equipment, New Holland and JCB) have replaced foot controls for extending sticks and auxiliary hydraulics with switches mounted on control levers. They employ finger and thumb dexterity to improve control and clear the floor for more comfortable footing.
Pilot hydraulic controls represent another kind of challenge to backhoe OEMs. These circuits are plumbed in between control levers and the valves on the backhoe’s main operating circuits. When move a joystick in the cab, it activates a pilot hydraulic circuit, which in turn moves a spool on the main-pressure valve. Pilot hydraulics require less lever effort to manipulate the backhoe.
Main pressures in backhoes have climbed to a point where lever effort can influence productivity. Eight of the 35 backhoe models 14-foot and larger have hydraulic-system pressures of 3,500 psi or higher. All eight are available with pilot hydraulic controls, mostly as an option.
Why not make pilot hydraulics standard equipment? One reason is operator preference. Backhoe-loaders have been controlled by levers linked to main valves since their invention, and lots of operators claim they can feel pressure spikes in the hydraulic system when a bucket hits a hard object, like a natural-gas line. Some say pilot hydraulics insulate the control levers to that feedback from the bucket.
Another reason for keeping pilot hydraulics optional is their cost. Nevertheless, most manufacturers (Cat, Deere, JCB, Komatsu, Terex and Volvo equipment) sell at least some of their machines with standard pilot-operated hydraulic controls.
“The inclusion of pilot controls has had the biggest impact on the industry in the last 24 months,” with John Deere. “Operator comfort becomes increasingly more important as businesses try to keep their best operators. With pilot controls, operators are less fatigued at the end of the day, and more productive as a result.”
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Thursday, September 11th, 2008 |
Long popular in Japan and Europe where work often is done in tight spaces, mini-excavators have become a force in this country as American machine manufacturers have developed their own mini-excavators to compete with popular imports. And a large number of mini-excavators on U.S. jobsites today are rented.
Most general rental centers have at least a couple of these smooth-operating compacts. Equipment-rental specialists have mini-excavator fleets with models in several sizes to meet the needs of customers doing a variety of construction, maintenance, landscaping, and demolition projects.
one of the first rental stores in the Atlanta area to offer a mini-excavator, adding them to the mix in the early ’80s,”It was compact for working in small places, easy to haul, and customers liked it immediately,”
Wearing soon added a second machine, and today his firm has a dozen units regularly rented by a broad range of customers. “Demand is very strong,”
Cat Rental Stores saw similar interest after the manufacturer added compact excavators to its line of equipment. “Demand for the product grew more than 60 percent. Caterpillar sales manager for mini hydraulic excavators and compact wheel loaders. “Mini-excavators can work in places where larger backhoes and excavators can’t go.”
“Plumbing contractors use the equipment for digging trenches for piping; landscapers use mini-excavators for jobs such as tree planting,” “Attachments provide versatility for many other projects.”
Size is one obvious reason for the popularity of mini-excavators. Small footprints allow the machines to work in backyards, narrow easements, inside buildings, and other areas where larger equipment can’t go. Mini-excavators speed completion of many jobs by doing work that otherwise would require hand labor. Their size and light weight mean equipment can be transported by trucks that don’t require drivers with commercial drivers’ licenses.
But size isn’t the only reason users like mini-excavators. The ability to dig offset trenches sets them apart from backhoe-loaders and other excavation equipment. This is made possible by two features: a rotating cab and independent left-right boom swing, which enables the operator to offset the boom to dig adjacent to foundations, fences and other obstacles.
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