Evaluation of asynchronous paddle shafts in reinforced concrete. Telemetry confirms higher fracture efficiency than synchronous shearing.
Evaluation of asynchronous paddle shafts in reinforced concrete. Telemetry confirms higher fracture efficiency than synchronous shearing.
Landfill fee €25/t, fuel consumption 0.27 l/t, and wear factor 0.85 are locked into the shift model.
Evaluation of asynchronous paddle shafts in reinforced concrete. Telemetry confirms higher fracture efficiency than synchronous shearing.
tensile fracturetensile fractureFractura por tracción: modo de fallo del material donde los ejes de la trituradora tiran y desgarran la carga, dominante a alto régimen y baja carga específica., cutting regimecutting regimeRégimen de corte: modo de funcionamiento donde las cuchillas de los ejes cortan la carga por cizallamiento, preferido para una fracción de salida limpia., TCOTCOCoste total de propiedad (TCO): el coste completo durante la vida útil incluyendo precio de compra, combustible, piezas de desgaste, mantenimiento y depreciación del valor residual., OPEXOPEXGastos operativos (OPEX): costes recurrentes de funcionamiento de la trituradora — combustible o electricidad, reemplazo de piezas de desgaste, mantenimiento programado y salarios de operadores. — wear cassettewear cassetteCassette de desgaste: conjunto de insertos de corte modulares y reemplazables montados en el eje de la trituradora. El sistema de intercambio rápido minimiza los tiempos de inactividad durante el mantenimiento., twin-shafttwin-shaftDiseño de doble eje: dos ejes contrarrotativos equipados con cassettes de corte intercambiables que funcionan en conjunto para triturar residuos industriales.
Traditional synchronous shredders attempt to slice through material. When applied to highly abrasive silicates and reinforced concrete, this destroys the metallurgical integrity of the blades. Arjes subverts this by utilizing an asynchronous drive system with Bonfiglioli planetary gearboxes, running independent shafts between 11 and 35 RPM and sustaining a 160,000 Nm torque capacity.
Instead of cutting, the shafts grip the aggregate and subject it to multi-directional tensile forces. Since concrete has high compressive but low tensile strength, it shatters along its internal fault lines. This "crushing" principle preserves the hard-faced tool edges and drastically reduces the kinetic energy required per ton.
SCU threshold locked at $P_{spike}=345$ bar. Auto-reverse safety margin: 5%. The Bonfiglioli drive train is calibrated to trigger kinetic reversal before reaching the shear stress limit of the paddle shafts. When unshreddable rebar bridges the chamber, the Shredder Control Unit (SCU) detects the hydraulic spike before exceeding the 160k Nm threshold. The automated reverse sequence instantly ejects the contaminant, allowing the over-belt magnet to isolate clean ferrous material without stalling the primary drive train.
Reference machine vs Competitor
Metso LT120 — a mobile jaw crusher positioned for primary reduction of concrete, asphalt, and demolition aggregate, often shortlisted alongside the ARJES Impaktor 1250 D for high-volume C&D recycling yards.
| Spec | ARJES Impaktor 1250 D | Metso LT120 |
|---|---|---|
| Drive concept | Dual-shaft low-speed hydrostatic shredder | Single-toggle high-speed jaw crusher |
| Engine | CAT C13 (Stage V) | CAT C9.3 (Stage V) |
| Drive power (kW) | 400 | 90 |
| Drive power (HP) | 544 | 122 |
| Operating weight (kg) | 37 000 | 25 500 |
