State-of-the-Artwork Dozers: OEMs loading the newest of those hardworking earthmovers with good expertise
By Richard Ries
The basic public might understand dozers as easy, lumbering beasts. However these within the building trade acknowledge them as focal factors of superior expertise.
Some of the apparent advances in dozer expertise is ever-improving machine management. “You could possibly argue that no product class has been extra affected by the continued adoption of machine management than dozers,” says Nathaniel Waldschmidt, product advertising supervisor, Case Building Tools.
One problem with machine management is to current the best worth and adaptability in a segmented market. Waldschmidt says Case accomplishes this with Common Machine Management, launched in 2018. “This permits clients to purchase the machine from the manufacturing facility with a common blade guidance-system harness and common machine brackets and mounts that combine into any of the most important machine management programs in the marketplace.”
With Common Machine Management, clients can set up the machine management system they like. When the machine is able to go to the secondary market, the second proprietor enjoys the identical flexibility in system alternative, and the primary proprietor can simply take away the system to be used on different gear. Case can also be going mastless with their new on-cab twin GNSS machine management system.
Good every little thing
The markets are awash in good merchandise. Good telephones. Good fridges. Good vehicles. And now good dozers. Integrating all these good merchandise is IoT, or the Web of Issues.
Liebherr launched INTUSI at Bauma in April. INTUSI (INTelligent Person Interface), which will likely be utilized in all Liebherr earthmoving machines and materials handlers, depends on IoT expertise to share info broadly, whether or not that’s between machines or between machines and people. The human interface is through touchscreen monitor. To make sure correct interplay in tough underfoot situations, enter may also be offered through haptic controllers. Particular person person changes may be made utilizing INTUSI after which saved in an operator profile.
Improved dozing management logic on Komatsu machines is an instance of the good dozer pattern. Derek Morris, product advertising supervisor, sums up the change by saying “dozer management has all the time been reactive; the brand new design is proactive.” By analyzing saved jobsite information, the machine can anticipate all facets of machine operate from preliminary cut-and-carry to last grading. The saved info is consistently up to date, says Morris, “because the dozer regularly refines what’s successfully an as-built map on the tracks.” The result’s as much as 40 % extra productiveness, Morris says. The advantages are clear all over the place, however particularly on transitions.
Jonathan Tolomeo, product advertising supervisor, Komatsu, says the system is designed to imitate the abilities of seasoned operators. “This permits new hires to develop into proficient in far much less time than they’d have up to now.” He additionally notes that aftermarket programs are typically used just for end grading, or about 20 % of a dozer’s obligation cycle. As a result of the brand new dozer logic is helpful from first to final go, it has muc
h greater worth. System hardware is basically unchanged and depends on the identical sensors and different parts which have been in use on Komatsu dozers since 2013. The improved logic accesses way more info from that very same hardware and makes higher use of that info.
Options that didn’t exist 20 years in the past and had solely restricted availability 10 years in the past at the moment are normal gear on most or all dozers in an OEM’s lineup.
For instance, John Deere supplies a full vary of options as primary gear. Eco mode yields as much as 20 % gas financial savings, whereas Auto Idle and Auto Shutdown additional improve gas effectivity. SmartGrade 3D provides factory-integrated, mastless 3D grade management from first to final go as a baseline of efficiency. Auto SmartGrade integrates the grade management system with the dozer’s energy administration system for even higher productiveness and effectivity. JDLink telematics present extra information to extra platforms, together with cellular units. Service Advisor Distant supplies distant diagnostics but in addition distant supply and set up of up to date software program.
“Know-how isn’t solely about grade management,” says Sam Meeker, product software specialist, Caterpillar. Cat’s new D6 XE dozer options superior expertise in its electrical drive system. It makes use of a single motor to drive the dozer in ahead and reverse and a hydraulic differential steering system. Cat says the D6 XE provides as much as 10 % higher productiveness and as much as 10 % gas financial savings than earlier fashions. Meeker says that whereas everybody enjoys the convenience of electrical drive, the numbers work greatest for longer-term homeowners (three years or extra) and people placing a minimum of 1,600 hours per yr on a dozer.
Diesel-electric drive has been a mainstay within the rail trade for many years and is seeing rising curiosity in delivery and different markets. The working effectivity and immediate torque of electrical drive would profit building, too. So why has it taken so lengthy for the design emigrate to earthmoving?
Meeker says it’s been a difficulty with dimension and what he calls “packageability.” The D7E was a low-drive unit as a concession to this packageability downside. However latest advances, together with large beneficial properties in the ability density accessible in mills, has whittled down these issues and the D6 XE is a high-drive machine. One other development is using switched reluctance motors, that are rugged, environment friendly and work nicely in variable-speed and reversing functions. That is important for dozers, which, not like locomotives and ships, are continually altering velocity and route all through their obligation cycle.
People nonetheless required
All of the good options in at this time’s dozers are meaningless if individuals are locked out of the method, so producers have taken steps to enhance communication between machines and people.
Caterpillar has a complete catalog of YouTube movies on the assorted features and options of its new monitor. (Seek for “subsequent gen dozer monitor” for a listing.) One instance Meeker cites is the power of an operator to outline a piece mode utilizing the monitor as an interface. As much as 17 working parameters may be set and saved as a profile, corresponding to “heavy dozing” or “slope work” or “
spreading.” Mode names are created by the operator.
Waldschmidt says Case’s M Collection dozers – particularly the 1150M, 1650M and 2050M – enable operators to independently set blade sensitivity, dozer steering sensitivity and shuttle sensitivity to one in all three modes: easy, average or aggressive. This permits operators to rapidly and simply match machine efficiency to their preferences or to job situations.
Nick Rogers, product specialist, Liebherr USA, says Liebherr’s LiDAT system is obtainable on each dimension dozer the corporate manufactures. A further Teleservice bundle permits Liebherr service personnel to log in to machines remotely for diagnostics and repairs. LiDAT is enhanced telematics with way more sturdy information administration, together with the power to handle information from a number of machines, whether or not they’re all Liebherr or of blended manufacturers.
Regardless of advances in info change, the worth of the expertise nonetheless rests on its use. “The info stream is crucial to productiveness,” says Rogers. “However what are you doing with that info? Are you taking a look at it on a constant foundation? Having the ability to look at the knowledge is vital, however subsequently using it’s the key.”
Whereas superior expertise is clear within the market, producers are additionally constructing higher fundamentals.
Dressta launched their S Collection dozers in 2016 with a brand new powertrain. Options widespread to the complete vary of Dressta dozers embrace a modular powertrain design with Cummins and Perkins engines and hydrostatic drive, six-sided ROPS cabs and one-piece mainframes. Blade selections embrace a six-way choice, and each single- and multi-shank rippers can be found.
Whereas Dressta dozers make use of three joysticks (drive, blade and ripper), their general use of electronics is low, partially to maintain prices down. This isn’t to say they’re primitive. For instance, Cummins engines may be adjusted to present fuel-consumption choices that weren’t accessible on earlier fashions, and shift presets may be altered to alter how aggressively the machines reply to operator enter.