Similarly, the “body-control valve” directs system pressure within the trash compactor, ejector, and tailgate. However, the immense pressures created by the pump must be directed into the lift arm’s many functions, which is where the “lift-control valve” comes in.Ī lift-control valve directs system pressure into one of six circuits that can lift a container up and set it down, move the arm in and out, or grab and release the container. That force can be used to flip a 200-pound container bin into the hopper, compress waste, or eject the hopper’s contents. The buildup of this fluid downstream from the pump creates forces of upwards of 2,500 pounds per square inch, producing well over 100,000 pounds of force, says Banowetz. For example, Heil’s new, state-of-the-art Python fully automatic lift-arm system uses a pump capable of forcing 55 gal/min of oil into the hydraulic system. The force in a hydraulic system comes from a pump. This oil is the blood of your hydraulic muscles, and tainted blood eventually dooms the system but back to that in a second. For the vast majority of collection vehicles, that fluid is an extremely debris-free petroleum product, usually with a rating of 15 microns or less. Force applied at one point in a hydraulic system can be transmitted to another part of the system using an incompressible fluid. Also, what does the future hold for quieter, stronger, safer, and more reliable systems?Ĭollection vehicle hydraulics are based on the ages-old principle of force transmittance. This month, MSW Management focuses on your fleet’s muscles, the best way to maintain them and prevent flare-ups, as well as how some organizations around the country handle the task every day. “If you don’t do the elementary stuff every day, the PM, in six to nine months, you’ll be a firefighter. Without a tightly regimented routine of good-operating practices, preventative and scheduled maintenance, solid-waste specialists risk turning themselves into figurative firemen, says Marv Banowetz, a 20-year veteran of hydraulic systems and technical training director at Heil, a leading manufacturer of refuse trucks.
They may be powerful, but they’re also sensitive, requiring scales of monitoring from the micron to the gallon, from the second to the season and beyond. Hydraulics perform high-force functions upwards of hundreds of times a day, hundreds of days in a row-until something goes wrong.
0 kommentar(er)
