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Concrete crusher used in building and cement industry
In the demolition of buildings and other structures, crushing of concrete is generally carried out using a chisel (teeth) device which is opened and closed by a hydraulic jack. Known as a concrete crusher , this device comprises a pair of jaws for biting concrete as secured to the free end of the driving arm of a construction machine, bypically a power shovel, a hydraulic cylinder for opening and closing said jaws , and chisel or crushing means attached to the mating faces of the jaws.
In order that the crushing capacity of such a concrete crusher may be increased , it is important to insure that the output of the hydraulic cylinder will act on the crushing chisel means as a concentrated load and also that , in consideration of the fact that concrete is rather resistant to compressive forces, the crushing force will act not as a compressive force but as a bending moment. Several proposals have been made in accordance with the above deign concepts.
For example, it was proposed to provide the mating faces of a pair of jaws with crushing means each comprising a plurality of projecting bars arranged in parallel with a pivot pin but in staggered relation between the jaws so that the output of a hydraulic cylinder may act as a concentrated load and, at the same time, exert bending moments on the concrete.
It was also proposed to provide a pair of jaws, with the lower jaw having on its mating face a plurality of longitudinal cutters arrangedin the form of a fork and perpendicular to a jaw pivot pin and a plurality of auxiliary cutters as arranged between said longitudinal cutters and perpendicular to the latter to constitute a gratelike cutter system, while the upper jaw is provided on its mating surface with a large sharp-pointed rough crushing cutter perpendicular to said pivot pin and a plurality of sharp-pointed cutters directed against said grate-like cutting system of the lower jaw. In this arrangement, a concentrated load is applied to the large rough crushing cutter to rough-cut the concrete in the first place and, then, bending moments are applied to the concrete by means of the grate-like cutting system of the lower jaw and the chisels of the upper jaw.
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In order to recommend you the most suitable plant, you are kindly requested to tell us the below information:
1 what kind of stone do you want to crush?
2 what is the material size before crushing?
3 what is the final product size do you want?
4 what is the capacity you want tons per hour?
5 what will you do with the final products?