SURFACE LOADING
Komatsu ' s Track Shield 2 is a suite of control functions that helps the operator reduce the number or severity of impacts between the dipper and the tracks or other parts of the shovel
fatigue to the shoes , front idler , dipper components , cable reel and other components .”
It adds : “ We ’ ve worked with our valued customers to design a solution that minimises the impact on operator motions during tuck to maintain shovel productivity . Field tests have shown statistically no reduction in productivity while Track Shield 2 is in operation when properly tuned . It can also assist operators by
guiding them to where they need to be with respect to the shovel ’ s structure and digging face while reinforcing best digging practices .”
Tuning is an initial process that configures Track Shield 2 based on operational priorities and objectives . “ We ’ ll work with you to pinpoint your optimal approach that aligns with your unique operation . For instance , Track Shield 2 can be custom tuned to focus on mitigating risk – avoid almost all collisions . Or it can be performance-configured – optimise productivity while reducing damage . It ’ s your choice . Komatsu service personnel provide one-time tuning in close collaboration with your mining operations and fleet maintenance teams .”
Large wheel loaders – here comes the Cat 995
Caterpillar ’ s 994 wheel loader has been a leader in its size class since it was first introduced in 1990 . Now the company is set to enhance its offering with a step up to the all new Cat ® 995 Wheel Loader which it says will deliver more payload , more power and more performance while using less fuel . First shipments are expected in Q4 2023 with an official launch in the coming months .
The 995 builds on the success of the 994K model with the goal of achieving even higher efficiency and production . Compared to the 994K , Cat says the new 995 is up to 19 % more efficient and up to 19 % more productive , thanks to a higher rated payload , increase in hydraulic force and up to 20 % reduction in hourly fuel consumption in Enhanced Eco Mode . Standard rated payload is 45.3 t for moderate to high digging resistance and 54.4 t for low to moderate . It also has 6 % more hydraulic force than the 994K .
Using less fuel reduces engine emissions and carbon footprint ; it ’ s 3516E Tier 4 Final engine reduces NOx and particulate matter . It also has Engine Idle Shutdown , which saves fuel by making it possible to avoid unnecessary idling .
Efficiency focussed technology includes Tire Slip Prevention , which reduces rimpull when there is less downforce on the tyre and increases rimpull when there is more downforce on the tyre — providing maximum rimpull when you can use it . Lift Stall Prevention automatically applies the impeller clutch when necessary to prevent hydraulic stall when lifting up through the face — keeping the lift motion continuous , without excessive use of the impeller clutch .
It also offers an improved operator environment . Designed for visibility , it has a taller windshield that provides a 25 % increase in glass surface area for a better view to the bucket , standard rear-view camera , optional Detect 270- degree cameras , standard LED lighting and sixmirror system . It also has improved access and egress , with integrated powered access system that can be raised and lowered from cab or ground .
Cat MineStar™ Terrain for loading provides real-time feedback on payloads and design plan progress to increases productivity and accuracy , reduce rework , enhance ore control and improve shift-to-shift operator performance .
These represent just a selection of the features of the new 995 . Numerous other attributes have boosted its serviceability , operator assistance and confidence , safety and productivity not to mention the latest bucket and GET options and designs .
Weir ESCO Nemisys lip for Cat 7495
Weir ESCO recently deliver a custom 59-yard ESCO ® ProductionMaster ® dipper equipped with a Nemisys ® N90 lip system for a Cat 7495 cable shovel . “ Our client valued direct access to the dedicated ESCO cable shovel engineering team from design through delivery of their dipper . Our experience in design , manufacture and optimisation combined with our post-delivery support ensures that our mining-class dippers deliver lasting value and performance to our customers .”
Extensive Finite Element Analysis ( FEA ) of the dipper and door results in reduced weight allowing up to 4 % more payload than traditional OEM designs . Long-lasting G . E . T . systems also improve penetration for higher digging efficiency which increases machine utilisation . Proprietary lip alloy improves weldability and reduces likelihood of fatigue cracks .
ESCO doors and bails provide superior strength over OEM versions . The rear-taper door ’ s short travel lowers truck impact during loading and softer closing for reduced dipper and snubber wear and tear . A 35 % lower peak sideloading stress results in better reliability and longer service life . Production Master ’ s innovative door and pivot
Caterpillar ’ s new 995 large wheel loader
MARCH 2023 | International Mining