A bushing or rubber bushing is a kind of vibration isolator. It provides an interface between two parts, the attenuation of the energy transmitted through the busing. Typical applications exist in vehicle suspension systems, where rubberized buses (or, more often, synthetic rubber or polyurethane) separate the faces of two metal objects while allowing for certain movements. This movement allows the suspension to move freely, for example, as it passes over a large bulge, while minimizing the transmission of noise and small vibrations down to the vehicle chassis. Rubber buses can also be described as flexible mounting or antivibration installs .
This busing often takes the form of annular cylinders of flexible material inside a metal casing or outer tube. They may also have an internal crush tube that protects the bushing from being crushed by materials that hold it to the threaded spigot. Many different types of bushing designs. An important difference compared to ordinary bearings is that the relative movement between two connected parts is accommodated by stretching on the rubber, not by friction or friction at the interface. Some rubber bushings, such as the D block for the rocking bars, allow to slide across the interface between one piece and the rubber.
Video Bushing (isolator)
Advantages and disadvantages
The main advantage of busing, compared to a solid connection, is less noise and transmitted vibrations. Another advantage is they need little or no lubrication.
Losses include:
- Rotten rubber can be quickly damaged in the presence of oil (eg, motor oil, mineral oil) and extreme heat and cold.
- The flexibility of the rubber also introduces a game element in the suspension system. This may cause camber, caster, or toe changes to the wheels of the vehicle during high load conditions (cornering and braking), adversely affecting vehicle handling. For this reason, the popular aftermarket performance improvement is the replacement of rubber suspension buses with busses made of more rigid materials, such as polyurethane. Polyurethane busing is also available for many vehicles with characteristics more or less the same as the original factory bushing, but with a greatly improved durability. This is useful for reputable vehicles to use standard rubber bushing, but for that the louder buses with the increased hardness of the vehicle are not desirable.
Maps Bushing (isolator)
Apps
- As a surprise holder
- In the vehicle:
- Link the anti-roll sequence (shake Goyang AS) and buffer
- Shock buffer
- Double wishbone suspension assembly
- Gear stick for vehicles with manual transmission
- Most inline high-speed internal combustion engines are susceptible to torsional vibrations from their crankshaft; straight six straight and eight straight machines are becoming very susceptible to this problem because of their long crankshaft length. Although eight straight engines faded from the market in the 1950s, many straight six engines have and still perform the vibration damping features of the crankshaft utilizing the rubber bushes. The Jaguar XK 6-cylinder 3,442 cc engine in 1948 and the most common version of the ubiquitous Jaguar XK engine use a special Metalastic vibration damper to protect their crankshaft from potentially damaging torsional vibrations. To quote William Heynes, "The metalastic damper is composed of bonded steel plates, through hard disk thick, soft soft-floating weight, variations in weight, volume of rubber and mixtures, giving these silencers a very wide field where they can operate."
- In a skateboard, bushing allows tilting the truck, allowing the board to turn.
- In binding, the busing is also used to move the load from binding to a much larger area in the underlying structure, the object being to reduce the strain on the individual fibers in the underlying structure. (See also grommet.)
History
Charles E. Sorensen praised Walter Chrysler as a leader in encouraging the adoption of mounts that absorb rubber vibes. In his memoirs (1956), he said that, on March 10, 1932, Chrysler phoned at Ford's headquarters to showcase the new Plymouth model.
- "The most radical feature of the car is the new suspension of its six-cylinder engine that can reduce vibration.The engine is powered at three points and rests on a rubber stand.Not much noise and vibration" There's still a lot of engine movement when it stops, but under that burden anyway. Though it was a great success in Plymouth, Henry Ford did not like it. For no particular reason, he just did not like it and I told Walter that I felt it was a step in the right direction, that it would smooth out all the sounds and would adjust to the axles and springs and the steering wheel, which would stop the street diversion Today rubber mounts are used on all cars. They are also found on electric motor mounts, in refrigerators, radios, television sets - wherever mechanical sound is seen, rubber is used to remove it. We can thank Walter Chrysler for a quieter lifestyle, Mr. Ford can install this new m ountuk at once in the V-8, but he misses his value. Then Edsel and I persuaded him. Rubber mounts are now also found in doors, hinges, windshields, fenders, spring hanger, shackles, and lights - all with the idea of ​​removing creaking and crackling sounds. "
Lee Iacocca credited Chrysler's chief engineering officer during that era, Frederick Zeder, by leading the effort. Iacocca said that Zeder "was the first person to find a way to get the vibrations from the car, the solution? He installed their machine at the rubber base."
The Chrysler novel engine mounting method is marketed as "Floating Power". The basic idea soon became a conventional method throughout the automotive industry.
See also
- AN-VI
- Shock mount
References
Bibliography
- Iacocca, Lido A.; William Novak (1984), Iacocca: An Autobiography, Bantam Book, ISBN 978-0553051025, LCCNÃ,84045174. = info% 3Aofi% 2Ffmt% 3Akev% 3Amtx% 3Abook & amp; rft.genre = books & amp; rft.btitle = Iacocca% 3A An Autobiography & amp; rft.pub = Bantam Books & amp; rft.date = 1984 & amp; rft_id = info% 3Alccn% 2F84045174 & amp; rft.isbn = 978-0553051025 & amp; rft.aulast = Iacocca & amp; rft.aufirst = Lido A. & amp; rft.au = William Novak & amp; rfr_id = info% 3Asid% 2Fen.wikipedia.org% 3try% 28atorator% 29 ">
- Sorensen, Charles E.; with Williamson, Samuel T. (1956), My Forty Years with Ford , New York, New York, USA: Norton, LCCNÃ, 56010854 Ã, . Various publications, including ISBNÃ, 9780814332795.
- DeSilva, C. W., "The Handbook of Vibrations and Surprises", CRC, 2005, ISBNÃ, 0-8493-1580-8
- Harris, C. M., and Peirsol, A. G. "Shock and Vibration Handbook", 2001, McGraw Hill, ISBNÃ, 0-07-137081-1
Source of the article : Wikipedia
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