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small wheel loader
SDLG series wheel loader
Wheel Loader Introduction:
Wheel loader is a type of construction equipment (engineering vehicle) machinery that is primarily used to "load" material (asphalt, demolition debris, dirt, feed, gravel, logs, raw minerals, recycled material, rock, sand, wood chips, etc.) into or onto another type of machinery (dump truck, conveyor belt, feed-hooper, rail-car, etc.)
Wheel loader (also known as: bucket loader, front loader, front end loader, payloader, scoop loader, shovel, skip loader, and/or wheel loader) is a type of tractor, usually wheeled, sometimes on tracks, that has a front mounted square wide bucket connected to the end of two booms (arms) to scoop up loose material from the ground, such as dirt, sand or gravel, and move it from one place to another without pushing the material across the ground. A loader is commonly used to move a stockpiled material from ground level and deposit it into an awaiting dump truck or into a open trench excavation.
The loader assembly may be a removable attachment or permanently mounted. Often the bucket can be replaced with other devices or tools--for example, many can mount forks to lift heavy pallets or shipping containers, and a hydraulically opening "clamshell" bucket allows a loader to act as a light dozer or scraper. The bucket can also be augmented with devices like a bale grappler for handling large bales of hay or straw.
Large loaders usually have only a front bucket and are called Front Loaders, whereas small loader tractors are often also equipped with a small backhoe and are called backhoe loaders or loader backhoes.
The largest loader in the world is LeTourneau L-2350. Currently these large loaders are in production in the Longview, Texas facility. The L-2350 uses a diesel electric propulsion system simlilar to that used in a locomotive. Each rubber tire wheel is driven by its own independent electric motor.
Wheel loader are used mainly for uploading materials into trucks, laying pipe, clearing rubble, and digging. A loader is not the most efficient machine for digging, as it cannot dig very deep below the level of its wheels, like a backhoe can. Their deep bucket can usually store about 3-6 cubic meters (exact number varies with the model) of earth. The front loader s bucket capacity is much bigger than a bucket capacity of a backhoe loader. Loaders are not classified as earthmoving machinery, as their primary purpose is other than earthmoving.
Unlike most bulldozers, most loaders are wheeled and not tracked, although track loaders are common. They are successful where sharp edged materials in construction debris would damage rubber wheels, or where the ground is soft and muddy. Wheels provide better mobility and speed and do not damage paved roads as much as tracks but provide less traction.
In construction areas loaders are also used to transport building materials - such as bricks, pipe, metal bars, and digging tools - over short distances.
Wheel loader are also used for snow removal, using their bucket or a snow basket, but usually using a snowplow attachment. They clear snow from streets, highways and parking lots. They sometimes load snow into dump trucks for transport.
High-tip buckets are suitable for light materials such as chip, peat and light gravel and when the bucket is emptied from a height.
Unlike backhoes or standard tractors fitted with a front bucket, many large loaders do not use automotive steering mechanisms. Instead, they steer by a hydraulically actuated pivot point set exactly between the front and rear axles. This is referred to as "articulated steering" and allows the front axle to be solid, allowing it to carry greater weight. Articulated steering provides better maneuverability for a given wheelbase. Since the front wheels and attachment rotate on the same axis, the operator is able to "steer" his load in an arc after positioning the machine, which can be useful. The tradeoff is that when the machine is "twisted" to one side and a heavy load is lifted high, it has a greater risk of turning over to the "wide" side.
Actually there is another class of loader - the track loader. It would be nice to either list it with the wheel loaders and backhoe loaders on this page, or start another and link it here. Track loaders used to be very popular, especially for digging basements for residential homes. That job now goes mostly to excavators.
Wheel loader, rated load 1.0-8.0 ton, CAT/Cummins engine, ZF transmission, Meritor/ZF axle. Main type, under mine type, normal type.
Now the best-seller model feature is: Fully hydraulic powered steering with flow-amplified system. Pilot operated control for loader hydraulic system, power shift transmission makes convenient and flexible operating.
new Z-bar linkage, high breakout force, shorter hydraulic cycle time, automatic leveling on any position, and greater productivity.
Special quadrate type transmission shaft of construction machinery. Power transmission is more reliability.
EG-TM combination is supported on three points by dual directions, vibration-isolators. Reducing resonance and fatigue failure of structure.
Optimized structure of diesel engine air intake system reduces dust into air filter. Prolonging the durability of engine, convenience the service of air filter element.
Optimized cooling system, drops overall heat balance temperature Integral operable hood, made by compound material, reduces noise and vibration, makes convenient and flexible operation and service.