Wheel loader equipment is a kind of widely used in highway, railway, building, water and electricity, ports, mining and other construction engineering conditions of construction machinery, it is mainly used to shovel, sandstone, lime soil, coal and other material, can also be used for ore, hard soil, such as mild shovel dug homework.The replacement of different auxiliary working devices can also carry out the loading and unloading of earth pushing, lifting and other materials such as timber.
In the road, especially in the construction of high grade road, the Function of a wheel loader is used for the filling and excavation of roadbed project, asphalt mixture and aggregate and loading of cement concrete material field.In addition, the operation of pushing and transporting soil, scraping the ground and pulling other machines can be carried out.Because the loader has the advantages of fast operation speed, high efficiency, good mobility and light operation, it has become one of the main types of earthwork construction.
Definition of a wheel loader
Including engine, torque converter, gearbox, drive axle, before and after referred to as "four items 1. 2. The engine torque converter has three pump, pump work (supply lifting, skip pressure oil) steering pump to pressure oil (supply) variable speed pumps also called walking (for strain, torque transmission pressure oil), some models on the steering pump is equipped with pilot pump control valve pilot pressure oil (supply) (3).Working hydraulic oil, hydraulic oil tank, pump, multi-way valve, lifting oil cylinder and skip cylinder 4. Walking oil, transmission oil sump oil, pump, valve all the way all the way into the torque converter into gear, transmission clutch 5. Driver: the shaft, the main differential, round edge reducer 6. Turn into oil tank, steering pump, the steady flow valve (or valve) steering, steering cylinder 7. Transmission is one of the planets and fission fixed axis
Working device of Wheel loader design
The shoveling and loading and unloading operation of the loader is realized by the movement of its working device.The working device of loader consists of bucket 1, moving arm 2, connecting rod 3, rocker arm 4, rotary bucket oil cylinder 5, moving arm oil cylinder 6, etc.The whole work unit is hinged on frame 7.The bucket is hinged to the oil cylinder of the rotary bucket by connecting rod and rocker arm for loading and unloading materials.The moving arm is hinged with the frame and oil cylinder of the moving arm for lifting the bucket.The turning of the bucket and the lifting of the moving arm are operated by hydraulic pressure.
Loader job working device should be able to guarantee: when turning cylinder are blocking, movable arm oil cylinder lifting or landing, up and down link mechanism make the bucket translation or close to translation, to avoid tilt bucket and scattered material;When the movable arm in any location, bucket spinning the movable arm hinge point around during discharging, bucket Angle is not less than 45 °, movable arm fall after unloading and can make the bucket flat automatically.Integrated structure of loader working device at home and abroad, there are mainly seven types, namely according to the linkage of the numeral is different, divided into three pole type, four, five bar type, rod type six bar type and eight bar type, etc.;According to whether the input and output rods have the same steering, it can be divided into forward turning and reverse connecting rod mechanism.Earthwork loader bucket structure, its bucket body commonly used low carbon, wear-resisting, high strength steel plate welding, cutting edge adopts wear-resisting of manganese in steel materials, side cutting edges and strengthen the Angle plate are made from high strength wear resistant steel materials.The shape of the bucket cutter is divided into four types.Insert resistance, wear resistance and easy replacement should be considered in the selection of tooth shape.The teeth are divided into sharp teeth and blunt teeth. The wheel loader usually adopts sharp teeth, while the caterpillar type is usually equipped with blunt teeth.The number of bucket teeth is determined according to the width of the bucket, and the distance between bucket teeth is generally 150-300mm.The structure of bucket teeth is divided into two types, one is integral type and the other is split type.The segmented bucket teeth are divided into two parts, basic tooth 2 and tooth tip 1. After wear, only the tooth tip needs to be replaced.
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