Excavators and positive shovel, backhoe, shovel, spade

Only a single bucket excavator refers to shovel bucket of mining machinery, mainly by the walking device, power plant and working device composed of three parts.Crawler walking the devices or wheel.
Are digging, the rear discharge method: direction is shovel digging, soil transport stopped behind it.Excavation working face is larger, but the shovel arm unloading soil large turning Angle, when the transport vehicles to reverse counterpoint, transportation inconvenient, production efficiency lower.Suitable for the occasion of narrow excavation depth large venues.

1. Positive shovel excavator
Have two types of diesel or electric drive, which is also called the excavator.Excavators have rotary three device, exercise, and mining.Downtime is mainly suitable for mining conditions above the ground, also can dig down below the ground is not deep.
(1) cycle
Every work cycle including mining excavator, rotary, unloading soil and return the four processes.
(2) the way of digging
Lateral digging, lateral discharge mill: the earthwork excavation yard, mound and channel, appropriate USES lateral constraints, car parked in the side of the excavator, excavator and the parallel operation direction.Make smaller turning Angle of excavator, turn out the car backed up with time, and can improve the productivity of excavator.According to different constraints is decorated, the shovel has different ways of operation:
Are digging, the lateral unloading method: direction is shovel digging, transport parked is lateral loading shovel of soil.Shovel arm unloading soil turning Angle is less than 90 degrees, convenient loading, short cycle time, high production efficiency.Try to decorate large earthwork excavation, construction of this kind of construction method.
2. Backhoe excavator
Trench excavation of the side - excavator is located in the groove end backwards for excavation, outside on both sides of the earth;
Is now commonly used hydraulic backhoe.Hydraulic backhoe are best suited for stop the following earthwork excavation, such as foundation pit, the channel, trench earthwork, but can also be earthwork excavation face more downtime.
Groove side excavation - excavator parked at the side, the available cars with earthmoving, earth will also be given on the mound.
Backhoe digging can adopt two kinds of excavation method (works) :
3. Dragline
Pulling scraper is suitable for the Ⅰ - Ⅲ type of soil, can stop the following earthwork excavation, the most suitable for large earthwork excavation underwater earthwork and water content.
Pull a shovel excavation method also can be divided into two ditch excavation and groove side excavation.Trench excavation of the side of the excavation depth is larger, but the width of excavation and unloading soil distance is smaller.
4. Grasp the shovel excavator
Suitable for excavation is relatively soft soil.The construction surface of narrow and deep foundation pit, deep groove, deep well adopt catch a shovel can obtain ideal effect.Catch a shovel can also be used to dig for water in the mud, loading and unloading of gravel, slag and other loose material.Grasp the shovel has adopts hydraulic drive control grab my homework

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