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Topic: Articulated steering

	Steering - Wikipedia, the free encyclopedia
		Steering is the term applied to the collection of components, linkages, etc. which allow for a car or other vehicle to follow a course determined by its driver, except in the case of rail transport by which rail tracks combined together with railroad switches provide the steering function.
		The most conventional steering arrangement is to turn the front wheels using a hand–operated steering wheel which is positioned in front of the driver, via the steering column, which may contain universal joints to allow it to deviate somewhat from a straight line.
		Articulated steering is a system by which a four-wheel drive vehicle is split into front and rear halves which are connected by a vertical hinge.
	en.wikipedia.org /wiki/Steering (1335 words)

	Steering articulated car - Patent 4289075
		The output from the angle of articulated sensing element means is used to guide each of the wheel sets to a radial configuration when the vehicle negotiates a curve.
		Articulation sensing means 5 being on the other side of the longitudinal vehicle axis 22 from articulation sensing means 4 will sense an increase of the angle, this increase being the same value as the decrease sensed by articulation sensing means 4.
		Thus, the body portions of the articulated truck are seen as 102 and 103 and are comparable to the vehicle body portions 2 and 3, respectively.
	www.freepatentsonline.com /4289075.html (2941 words)

	Unasylva - No. 83 - Supplement - Use of articulated wheeled tractors in logging
		Articulated steering is the steering of a vehicle (tracked or wheeled) consisting of two units of a single pivot point system in which the pivot is not located over the axle of either unit.
		In an articulated vehicle, steering is accomplished by bending the vehicle about a pivotal point, and in consequence, is often referred to as frame steering This concept is not new as it existed as long ago as 1916, being used in a one-row cultivator machine by John Deere and; Company (Figure 6).
		By means of an articulated hydraulic powered boom and grapple, the skidder operator loads the rear bunk of a wheeled tractor with the butts of trees.
	www.fao.org /docrep/52298e/52298e0b.htm (4963 words)

	Loader (equipment) - Wikipedia, the free encyclopedia
		Instead, they steer by a hydraulically actuated pivot point set exactly between the front and rear axles.
		This is referred to as "articulated steering" and allows the front axle to be solid, allowing it to carry a heavier weight.
		Articulated steering also gives reduced turning radius (and therefore higher maneuverability) for a given wheelbase.
	en.wikipedia.org /wiki/Loader_(equipment) (658 words)

	STEERING CONSIDERATIONS
		It is therefore relatively uncomplicated and inexpensive to utilize a steered rear axle as opposed to a non-steered trailer-type axle, and to actuate the steering automatically by mechanical linkage connected to the articulation joint or "bogie".
		Thus the typical pusher articulated bus employs an A-axle steered by the driver, a non-steered B-axle near the rear of the front body and a non-steered driven C-axle in the rear body.
		Because the puller's C-axle steers outward to reduce intrusion of the rear body inward while turning, the rear corner of the trailer must necessarily be displaced outward beyond the arc generated by the outer sidewall of the tractor.
	www.nabiusa.com /resource_page.cfm?res_id=11 (1554 words)

	Steering (Site not responding. Last check: 2007-10-23)
		4 wheel steering (or all wheel steering) is a system employed by some vehicles to increase vehicle stability while maneuvering at high speed, or to decrease turning radius at low speed.
		Previously, Honda had four wheel steering as an option in their 1988-1994 Prelude, and Mazda also offered four wheel steering on the 626 in 1990.
		Some vehicles now offer a form of "passive" four wheel steering, where the bushings by which the rear suspension attaches to the automobile are designed to compress in a precise direction under the forces of steering, thus slightly altering the rear suspension geometry in such a manner as to enhance stability.
	www.infoslurp.com /information/Steering (904 words)

	[No title]
		Extreme flex and articulation of steering and suspension systems is inherent when vehicles must navigate over and around obstacles of significant size or sudden and abrupt changes in the geometry of the driving surface.
		Articulated steering vehicles can currently be seen in many areas: NASA has used many such vehicles for exploration missions on the moon (both manned and unmanned) and Mars.
		Since the tires of vehicles with articulated steering do not skid relative to the ground, it is expected that there would be less damage to driving surfaces and that traction control may be increased.
	www.clarkson.edu /honors/research/papers/Harwood-Josh.doc (1807 words)

	Hydrostatic Drive Log skidders: Morgan SilvaCom
		Steering drive axles have always been one more thing to break, but with a hydrostatic drive this excuse not not providing steering disappeared and we have the world's first 'green' log skidder.
		Throughout the history of articulated machines oscillation has been handled either by an oscillating axle or by a swivel in the hinge, usually fabricated by welding a large thick wall tubing to the hinge unit and having it turn on brass bushings in the rear unit.
		The computer senses the angle of articulation, and the extent of steering on each axle, and the desired speed of the machine and commands the pumps to pump the right amount of oil to each wheel in order to execute the turn without wheel bind.
	www.vannattabros.com /skidder4.html (2434 words)

	MFSP Big Tractor Safety (Site not responding. Last check: 2007-10-23)
		Articulated steering changes the rig’s center of gravity so that an overturn can occur under unexpected conditions.
		If an operator steers a unit with articulated steering while it is standing still, a bystander can be trapped in the hinge region.
		Steer articulated four-wheel drive tractors with care at transport speed to assure straight-line tracking.
	www.umext.maine.edu /onlinepubs/htmpubs/farmseries/2323.htm (521 words)

	What's new in ADT's
		The haulers are equipped with self-compensating hydro-mechanical steering.
		Cushioned steer cylinders are mounted to give the rods maximum protection from material thrown up by the front wheels, thus improving the service life of the rod seals.
		The steer system pressure was also increased in the new design from 250 psi to 3500 psi for better steering performance at low engine speed and difficult conditions.
	www.rocktoroad.com /adt.html (2410 words)

	Sauer-Danfoss Steering Products
		The OSPL steering unit is particularly suitable for where the steering flow can reach 100 l/min (26 gpm).
		These steering units are designed with variable displacement to make emergency steering possible on even heavy machines.
		On loaders, large forklift trucks, dump trucks, large tractors and other heavy vehicles, there is often a need for electrically actuated steering in the form of a joystick or automatic steering as alternative to the normal steering wheel mode.
	www.sauer-danfoss.com /Products/products_steering.html (378 words)

	HOLDER 242tractor (Site not responding. Last check: 2007-10-23)
		Articulated steering four-wheel drive on 4 equally sized tires.
		Steering system to be articulated design using spherical greaseable bearings.
		Cast construction, 4-wheel drive, articulated steering with torsion wheel stabilizer.
	www.holder.on.ca /242tractor_specs.html (378 words)

	Power Steering
		This design is called articulated steering and it is controlled by a steering wheel, a hydraulic control valve, and hydraulic cylinders.
		Wheeled equipment may be designed to steer by angling the front wheels, the rear wheels, and or both the front-and-rear wheels (fig.
		This type of steering is used with front-end loaders, as it keeps the weight of the machine squarely behind the bucket on turns and keeps the front tires tracking in the rear while backing away from banks and dump trucks.
	www.tpub.com /eqopbas/27.htm (422 words)

	Untitled Document
		The front-mounted cutting deck with articulated steering came in the 1970s, followed by the Multiclip system in the 1980s.
		The driver sits in the middle above the articulated steering, enabling the machine to swing in the centre.
		In addition to the articulated steering which is standard throughout the Stiga Park range, the machines are equipped with servo steering which by using the oil pressure in the gearbox enables the driver to effortlessly steer as soon as the machine is started.
	www.mowerandsaw.co.uk /stigaPressrelease4.htm (686 words)

	Husqvarna - 1389 (Site not responding. Last check: 2007-10-23)
		The articulated steering makes our Riders flexible and easy to drive and means that you can cut around trees and bushes in one single movement.
		Turning the steering wheel as far as possible gives you an area left uncut of only 20–30 cm.
		Our steering column, front wheels and support wheels are equipped with ball bearings.
	www.usa.husqvarna.com /node1389.asp (312 words)

	Jaydeez Scale Models
		Features rolling wheels with articulated steering, oscillating rear wheels, boom that raises and lowers, with logging forks that open and close.
		Moveable drawbar, circle and moldboard for blade positioning, front wheel steering with wheel articulation, and rear ripper-scarifier that raises and lowers.
		Has articulated steering, rolling wheels, a boom that raises and lowers, and includes three attachments: bucket, pallet forks and material handling arm that extends and retracts.
	www.jaydeez.com /products_equipment.html (615 words)

	Agriculture equipment, farm magazines, farm equipment, farm inventions, farm machinery, agriculture machinery
		But the big tractor had duals all the way around and crab steering, which would have bumped into any kind of loader he tried to put on it.
		Kile decided the best way to turn the 200-hp tractor into a loader tractor would be to convert it to articulated steering with an oscillating hinge.
		By using another articulated tractor as a guide, he accomplished the task in about a month's time.
	www.farmshow.com /issues/29/01/290105.asp (315 words)

	Stiga lawnmowers ride on mowers snow throwers brush cutters grasstrimmers (Site not responding. Last check: 2007-10-23)
		The PRO machines are extremely versatile thanks to their genuine articulated steering and front-mounted cutting deck.
		Besides the articulated steering, which is standard on all Park models, a special power steering is standard on Pro 25 and 20.
		This power steering takes advantage of the oil pressure from the pump, this means that as soon as the machine starts to move you can turn the machines with hardly any power at all with the steering ball.
	www.stiga.com /Pressrelease.aspx?Country_id=1&Press_id=516 (766 words)

	Rottne AB - Technical information f12
		Articulated steering joint of ball race type with double acting cylinders.
		Welded puller frame with steering joint of ball race type and built in steering cylinders.
		Articulated wagon with central frame and 3 bunks.
	www.rottne.com /uk/prod/t-f12.htm (549 words)

	Husqvarna - 1388 (Site not responding. Last check: 2007-10-23)
		Husqvarna’s unique, patented articulated steering allows the rear wheels to swing in under the machine, behind the front wheel, when the steering wheel is fully turned.
		It controls the transmission’s oil flow to the power steering unit and further to a hydraulic cylinder that regulates the height adjustment of the cutting deck.
		Other improvements include the adjustable steering column and a new, comfortable professional seat with adjustable damping.
	www.usa.husqvarna.com /node1388.asp (451 words)

	Rottne AB - Technical information Rapid
		The rigid wagon, which is available in different frame lengths, has a very low center of gravity and detachable load bunks.
		Hydraulically controlled articulated steering joint of ball race type type with double acting cylinders.
		Steering wheel control by orbitrol, proportionally controlled off-road steering.
	www.rottne.com /uk/prod/t-rapid.htm (442 words)

	TV140 Tractors
		Full-time four-wheel drive and articulated steering allow you to work in places a typical tractor can't.
		The Bidirectional™ articulates up to 45 degrees so you get best-in-class turning at all track settings.
		You turn faster, sharper and more accurately for reduced crop damage at the end of the rows, and better maneuverability with a loader.
	www.newholland.com /na/Products/tv140_steering.html (227 words)

	Cambridge Vehicle Dynamics Consortium
		By steering all axles of an articulated vehicle a number of benefits can be achieved including swept path reduction, tyre wear improvement and reduced rearward amplification during transients.
		Kienhofer, Cebon, "An Investigation of ABS Strategies for Articulated Vehicles", 8th International Symposium on Heavy Vehicles, Weights and Dimensions, 8ISHVWD Misty Hills, South Africa, March, 2004.
		The aim is to increase the stability and controllability of the vehicle during an emergency manoeuvre.
	www.cvdc.org /projects.html (581 words)

	Search Results - norscot
		Caterpillar 140h Motor Grader - This detailed model includes a moveable drawbar, circle, and moldboard for blade positioning; front wheel steering and frame articulation; tandom left and right rear wheels; and a rear ripper-scarifier which...
		Caterpillar 226 Skid Steer Loader - This model comes with interchangeable work tools including Pallet Forks, Grapple Bucket and a General Purpose Bucket; Articulated arms and coupler; and Authentic rolling wheels and tires.
		Caterpillar 725 Articulated Dump Truck -Features include an articulated hitch; moveable hydraulic dump box; all wheels roll with authentic tire tread design; interior cab detail; and working rear suspension.
	www.3000toys.com /catalog/item_list.asp?osql=mfg='Norscot' (1113 words)

	A Practical Trajectory Following of an Articulated Steering Type Vehicle. (ResearchIndex) (Site not responding. Last check: 2007-10-23)
		A Practical Trajectory Following of an Articulated Steering Type Vehicle.
		Abstract: We are interested in automated control of an articulated steering type vehicle like a wheel loader.
		We consider a typical motion of the wheel loader drawing a V-shape when it picks gravel up and loads it to the dump truck.
	citeseer.ist.psu.edu /8500.html (312 words)

	Agri main page (philosophy) (Site not responding. Last check: 2007-10-23)
		While spraying plant protecting agents, the articulated steering ensures that only two tyre tracks remain in the field and no crop is unnecessarily laid flat.
		Valtra X Series, a standard tractor equipped with articulated steering.
		It is a conventional farming tractor equipped with articulated steering, which increases the tractor's versatility.
	www.valtra.com /common_sites/commoneng/products/Xseries/Agri/1_1.htm (187 words)

	Robotics Institute: Steering and Control of a Passively Articulated Robot
		Hyperion is a rover designed and built for experiments in sun-synchronous exploration.
		This paper details Hyperion?s steering mechanism and control, which features 4-wheel independent drive and an innovative passively articulated steering joint for locomotion.
		Wettergreen, and W.L. Whittaker, "Steering and Control of a Passively Articulated Robot," SPIE, Sensor Fusion and Decentralized Control in Robotic Systems IV, Vol.
	www.ri.cmu.edu /pubs/pub_3872.html (296 words)

	Husqvarna Ride On Mowers from Penn
		Kawasaki V-Twin engine, hydrostatic transmission with power steering.
		Articulated steering with range of decks with service position available, for easy cleaning and servicing.
		articulated power steering and differential lock for rough ground.
	www.penn-lawn-mowers.co.uk /husqvarna_rideon_mowers.html (127 words)

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