Trailer Hitch Snow Plow
Author | : Michael P. Biance |
Publisher | : |
Total Pages | : 6 |
Release | : 1983 |
Genre | : Snowplows |
ISBN | : |
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Author | : Michael P. Biance |
Publisher | : |
Total Pages | : 6 |
Release | : 1983 |
Genre | : Snowplows |
ISBN | : |
Author | : Jae Young Kang |
Publisher | : |
Total Pages | : |
Release | : 2014 |
Genre | : |
ISBN | : 9781321362985 |
The TowPlow is a novel type of snowplow that consists of a conventional snowplow vehicle and a steerable, plow-mounted trailer. The trailer is equipped with hydraulic-powered steerable axles so that it can be steered up to 30 degrees with respect to the tractor. The combination of the front plow of the towing snowplow and the trailer-equipped plow is able to clear a path up to approximately 24-ft wide, which is the width of two typical traffic lanes. While the TowPlow may increase the efficiency and performance of the snow removal operation, the stability of the system under the harsh winter conditions may be compromised by implementation of the steerable trailer, and safety of the system must be ensured. The kinematic characteristics of the TowPlow are derived using instantaneous centers of velocity. Based on the derived equations, the relation between the radius of curvature and the trailer wheel steering angle that allows the tractor-trailer to maintain its initial articulation angle is defined to be used in a kinematics-based control of the TowPlow. Then, a linear dynamic model is developed in order to investigate the dynamic behavior of this system and its stability limits. Dynamic simulations of various maneuvers are performed, and kinematics-based control is implemented to investigate performance of the trailer's corrective steering. The goal is to ensure that the trailer does not intrude into adjacent lanes during plowing operations while also ensuring that both lanes are sufficiently cleared. Even though the control input is obtained from kinematic analysis, which does not take forces and inertia into account, the simulation results clearly show that the corrective steering helps the TowPlow meet its performance goals. Also, a nonlinear dynamic model of the TowPlow for longitudinal, lateral, and yaw motions is developed with the state variables of longitudinal velocity, lateral velocity and yaw rate of the towing unit, yaw rate of the trailer unit, and the articulation angle between the two units. The model includes a modified Dugoff's tire friction model, tire rotation dynamics and the load transfer effect. The model is validated through full-scale experiments of the TowPlow under both steady-state and transient conditions. For completion of the nonlinear dynamic model, a snow resistance model is developed to estimate the snow resistant forces on each plow of the TowPlow. Dynamic simulations of the nonlinear TowPlow model including the snow resistance are performed without any controller. The effect of the snow resistance on the dynamics and stability of the TowPlow is discussed for various maneuvers such as cornering, slalom, up and down hill, and split friction coefficient braking. Finally, an active steering control of the trailer axle is introduced to prevent the TowPlow from intruding into the adjacent lane and also from missing certain portions of the lane during its snow removal operation. The linear quadratic regulator (LQR) based closed-loop controller is developed utilizing the linear TowPlow model. Performance of the LQR controller is compared to that of a simple PI controller. Dynamic simulations of the TowPlow with the trailer active steering control are performed for the same maneuvers simulated with the uncontrolled system. The comparison of the simulation results between the controlled system and the uncontrolled system clearly demonstrates that the implementation of active steering control for the trailer axle will improve safety and efficiency of the TowPlow. Such control keeps the TowPlow from either intruding into the adjacent lane or missing large portions of the lane by maintaining its total articulation angle in its snow removal operation.
Author | : United States. Patent and Trademark Office |
Publisher | : |
Total Pages | : 1266 |
Release | : 2000 |
Genre | : Patents |
ISBN | : |
Author | : Janet Miller |
Publisher | : Lulu.com |
Total Pages | : 309 |
Release | : 2010-07-29 |
Genre | : Architecture |
ISBN | : 0557576199 |
With a black and white interior, this book is a "MUST READ" for those who are planning to build a horse barn/farm, those who are just dreaming of someday building one, those on a limited budget, those on a limitless budget (because you will still have to give direction to your planners and architects to make sure you wind up with a functional barn/farm, and the one you wanted), those looking to buy an existing farm, those of you boarding, and anyone who rides or is thinking about riding (because the horse's housing and care will contribute to the horse's overall temperament and ability to perform). The author offers hard facts and information from her real life experience building and operating her own horse farm and her more than twenty years of horse ownership and hunter/jumper show competition. Anecdotal stories and "lessons" (epiphanies) are included to emphasize points to help readers avoid making mistakes in their own barn/farm construction projects.
Author | : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Defense |
Publisher | : |
Total Pages | : 1752 |
Release | : 1973 |
Genre | : United States |
ISBN | : |
Author | : G-15 Airport Snow and Ice Control Equipment Committee |
Publisher | : |
Total Pages | : 0 |
Release | : 2013 |
Genre | : |
ISBN | : |
This SAE Aerospace Recommended Practice (ARP) covers various requirements for airport runway plows, ramp plows, wings, and hitches to be used with various carrier vehicles primarily used to cast snow away from airport airside operational areas, such as runways, ramps, and taxiways. It does not apply to plows and hitches for non-airport snow removal equipment such as highway plows or construction/farm machinery. ARP5943 has been reaffirmed to comply with the SAE five-year review policy.
Author | : Hope Irvin Marston |
Publisher | : Dodd Mead |
Total Pages | : 52 |
Release | : 1986 |
Genre | : Technology & Engineering |
ISBN | : 9780396088189 |
Text and photographs describe various types of snow removal equipment and how they work.
Author | : United States. Congress. House. Committee on Appropriations |
Publisher | : |
Total Pages | : 1480 |
Release | : 1977 |
Genre | : |
ISBN | : |
Author | : United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Defense |
Publisher | : |
Total Pages | : 1464 |
Release | : 1976 |
Genre | : United States |
ISBN | : |
Author | : |
Publisher | : |
Total Pages | : 268 |
Release | : 1957-06 |
Genre | : |
ISBN | : |
Popular Mechanics inspires, instructs and influences readers to help them master the modern world. Whether it’s practical DIY home-improvement tips, gadgets and digital technology, information on the newest cars or the latest breakthroughs in science -- PM is the ultimate guide to our high-tech lifestyle.