Hydraulic mining shovel with scr unit

Abstract

The present disclosure relates to a hydraulic mining shovel. The shovel may comprise a main frame, a power module and a counterweight module. The shovel may further comprise a first exhaust aftertreatment module and a second exhaust aftertreatment module, each being mounted onto the counterweight module and each including a reductant tank and pump unit and a selective catalytic reduction unit. The first exhaust aftertreatment module and the second exhaust aftertreatment module may be configured and arranged substantially mirror-symmetrically at opposing sides of the counterweight module with respect to a central longitudinal axis of the main frame.

What is claimed is: 
     
         1 . A hydraulic mining shovel, comprising:
 a main frame extending along a central longitudinal axis;   a power module mounted onto the main frame and including a first internal combustion engine and a second internal combustion engine;   a counterweight module mounted onto the main frame and including a counterweight for maintaining stability of the hydraulic mining shovel;   a first exhaust aftertreatment module and a second exhaust aftertreatment module, each being mounted onto the counterweight module and each including:   a reductant tank and pump unit configured to store and supply a reductant; and   a selective catalytic reduction unit fluidly connected to the respective reductant tank and pump unit for receiving the reductant;   wherein the first exhaust aftertreatment module is fluidly connected to the first internal combustion engine the second exhaust aftertreatment module is fluidly connected to the second internal combustion engine, and the first exhaust aftertreatment module and the second exhaust aftertreatment module are configured and arranged substantially mirror-symmetrically at opposing sides of the counterweight module with respect to the central longitudinal axis.   
     
     
         2 . The hydraulic mining shovel of  claim 1 , wherein the first internal combustion engine and the second internal combustion engine are configured and arranged substantially mirror-symmetrically on opposing sides of the power module with respect to the central longitudinal axis. 
     
     
         3 . The hydraulic mining shovel of  claim 1 , wherein:
 the first and second selective catalytic reduction units have respective longitudinal axes extending substantially parallel to the central longitudinal axis; and/or   the first and second internal combustion engines have respective longitudinal axes extending substantially parallel to the central longitudinal axis.   
     
     
         4 . The hydraulic mining shovel of  claim 1 , wherein:
 the first and second reductant tank and pump units have respective longitudinal axes extending substantially perpendicular to the central longitudinal axis; or   the first and second reductant tank and pump units have respective longitudinal axes extending substantially parallel to the central longitudinal axis.   
     
     
         5 . The hydraulic mining shovel of  claim 1 , wherein the first and second selective catalytic reduction units are mounted closer to the central longitudinal axis than the first and second reductant tank and pump units. 
     
     
         6 . The hydraulic mining shovel of  claim 1 , wherein the power module further comprises a service unit providing a reductant refill inlet in fluid connection with the first and/or second reductant tank and pump unit for refilling reductant. 
     
     
         7 . The hydraulic mining shovel of  claim 6 , wherein the service unit is arranged in a bottom region of the power module, and is configured to extend in direction to a ground surface for providing access to the reductant refill inlet for an operator on ground level and to retract into the power module for mining operation. 
     
     
         8 . The hydraulic mining shovel of  claim 1 , wherein at least one of the first and second exhaust aftertreatment modules further comprises a carrier structure supporting the respective reductant pump and tank unit and the respective selective catalytic reduction unit, the carrier structure being releasably mounted onto the counterweight module. 
     
     
         9 . The hydraulic mining shovel of  claim 8 , wherein the carrier structure of the first exhaust aftertreatment module and the carrier structure of the second exhaust aftertreatment module are formed as a common carrier structure. 
     
     
         10 . The hydraulic mining shovel of  claim 1 , wherein at least one of the first and second exhaust aftertreatment modules further comprises a drip pan arranged below the respective reductant tank and pump unit for collecting leaking reductant, and optionally, the drip pan is integrated into a carrier structure of the respective exhaust aftertreatment module. 
     
     
         11 . The hydraulic mining shovel of  claim 9 , wherein the drip pan includes a drainage mechanism configured to drain reductant from the drip pan to a direction away from the power module. 
     
     
         12 . The hydraulic mining shovel of  claim 1  wherein at least one of the first and second exhaust aftertreatment modules includes a heat insulation wall arranged between the respective reductant tank and pump unit and the respective selective catalytic reduction unit. 
     
     
         13 . The hydraulic mining shovel of  claim 12 , wherein the heat insulation wall is releasably mounted to a carrier structure of the respective exhaust aftertreatment module. 
     
     
         14 . The hydraulic mining shovel of  claim 1 , wherein at least one of the first and second exhaust aftertreatment modules includes a protection cover covering the respective reductant tank and pump unit and/or the respective selective catalytic reduction unit. 
     
     
         15 . The hydraulic mining shovel of  claim 1 , wherein the counterweight module and the power module are mounted onto the main frame with a clearance between the counterweight module and the power module.