A bucket crusher or crusher bucket is a type of

jaw crusher A crusher is a machine designed to reduce large rocks into smaller rocks, gravel, sand or rock dust. Crushers may be used to reduce the size, or change the form, of waste materials so they can be more easily disposed of or recycled, or to re ...

. It's an attached tool for

excavator Excavators are heavy construction equipment consisting of a boom, dipper (or stick), bucket and cab on a rotating platform known as the "house". The house sits atop an undercarriage with tracks or wheels. They are a natural progression fro ...

s for built-in crushing

construction waste Construction waste or debris is any kind of debris from the construction process. Different government agencies have clear definitions. For example, the United States Environmental Protection Agency EPA defines construction and demolition materi ...

and

demolition Demolition (also known as razing, cartage, and wrecking) is the science and engineering in safely and efficiently tearing down of buildings and other artificial structures. Demolition contrasts with deconstruction, which involves taking a ...

materials. It has the design of a shovel, which is open at the rear for releasing the shredded material. Compared to normal jaw crushers, The jaw crusher bucket has a lower production, but can be transported more easily and only needs an excavator to operate. The jaws are driven by hydraulically actuated

eccentric Eccentricity or eccentric may refer to: * Eccentricity (behavior), odd behavior on the part of a person, as opposed to being "normal" Mathematics, science and technology Mathematics * Off-center, in geometry * Eccentricity (graph theory) of a v ...

s which crush material to a desired particle size. Bucket crushers are primarily employed in mining and demolition for the breaking-down of crude minerals, concrete and masonry. During the crushing process, the crusher bucket is positioned vertically so that the crushed material can be released. The jaw bucket works with the hydraulic system of the excavator. The hoses to the excavator, for intake and drain the oil are connected directly to the crusher bucket. A hydraulic valve block regulates the oil flow and the oil pressure to the correct amount of the

hydraulic motor A hydraulic motor is a mechanical actuator that converts hydraulic pressure and flow into torque and angular displacement (rotation). The hydraulic motor is the rotary counterpart of the hydraulic cylinder as a linear actuator. Most broadly, ...

leave. The movement is transferred to one of the two crushing jaws, the other stops. Crusher buckets can differ in size and weight () and volume (). The distance between the crushing jaws can range from . Most patents on bucket crushers were filed in the mid 1990s, expiring around the year 2020.

References

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External links

Bucket Crusher
YouTube, 10 March 2014
Bucket Crusher
Website Construction equipment Pages with unreviewed translations