Abstract:
In rotary tire shredding machinery, cutter assemblies are built onto opposing rotary shafts timed together by meshed teeth of two gears, with spacer groups separating adjacent cutter assemblies, allowing two sets of cutter assemblies to intermesh, with cutter assemblies on one shaft interleaving with cutter assemblies on a parallel shaft in a shearing relationship. Each cutter assembly has a construction featuring a series of cutter sectors, with each sector having a separately demountable knife base, with a removable, radially outward knife top. Alternate spacers between cutter assemblies are segmented, with alignment rods running parallel to the axially rotating drive shafts, passing through both the knife bases of the cutter assemblies, spacers, retaining flanges and fixed registering spacer. The rods are secured at opposite ends and the center holding the cutter assemblies and spacers in place, but when pulled, allowing the cutter and spacer assemblies to be removed from the shaft. The knife tops, which experience the most wear may be easily removed for routine maintenance, since they are held in place by radially endwise bolts, but the knife bases if they are worn or damaged may also be removed and replaced by pulling the alignment rods. Some spacers are formed in halves which are offset from each other and welded for extra strength. Spacers and cutter sectors may be assembled and disassembled in-situ on a drive shaft without removing the drive shaft from its support bearings.
Abstract:
A modular blade assembly having base and blade components and at least one keyplate aligning the base and blade components. The keyplate rests in a recessed groove in each of the base and blade components. Each of the dimensions of the recessed groove in which the keyplate rests is less than the dimensions of the surface in which the groove is disposed.
Abstract:
A cutter wheel for tire shearing having a unitary annular core with radially inward shoulders on both sides of the radially outward central portion of the core. Pie-piece shaped cutter segments are mounted atop the shoulders of each core with each cutter segment having a base and a blade atop the base, with cutter segments overlapping in a serrated fashion, beyond the central portion of the core. The central portion of the core is smooth, serving as a spacer between adjacent cutter segments. Each blade is split into two side-by-side blade segments, with the laterally outward blade segment experiencing greatest wear. The laterally inward blade segment mounted to a pie-piece shaped cutter segment by radial bolts, while the laterally outward blade segment is fastened to the laterally inward blade segment by axial bolts.
Abstract:
A shearing wheel, and a method of assembling the same, having individually demountable cutting segments, shear knives, and an interlock key assembly to wedge adjacent shear knives together so that each shear knife shares a mounting force of the attachment bolts present on adjacent knives. The shear knives are mounted in successive abutting relation, forming a chevron-shaped aperture into which a rectangular key is wedged. A portion of each shear knife extends radially beyond the annular member. This extending portion forms a toothlike structure for feeding and ripping waste material. A support shoulder extending axially from the annular member contacts and supports the shear knives. The shear knives may be individually removed and resharpened, whereafter shims are positioned between the shear knives and the annular member to properly space the shear knives from an adjacent shearing wheel.