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[技术] 离合器图片资料

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发表于 2009-10-22 06:00:50 | 显示全部楼层 |阅读模式
前几天三足让我帮收集一些离合器的资料,今天整理了一上并发布上来与大家分享,这里的离合器资料是用google图片搜索查到的对于一些有用的资料,转帖过如果大家觉得不够全面也希望大家能够补充。在此感谢为科技论坛提供支持的每一位会员。
A centrifugal clutch allows the engine to run whilst the propeller remains still. This obviously has many benefits such as minimizing the probability of lines entering the spinning prop whilst inflating the glider. It also prevents damage to the leading edge of the prop when standing the spinning prop on beach sand or similar lose material. This unique system may be easily made from the inner workings from a comparable machine. These clutch systems are found on motorised scooters and numerous road working machinery such as whackers or compactors. Simply remove the inner component (A), make an outer housing to house it (B), and a shaft(C) if not present. Often the small pulley may be manufactured as part of the outer housing (D) . This system may be adapted to convert your SOLO or HIRTH 210cc engine into one with a centrifugal clutch



How does a centrifugal clutch system work??? How does a centrifugal clutch system work? The entire shaft and inner clutch system is attached to the spinning crank. The small pulley and hence the outer casing is thus stationary as the break pads are detached or not making contact with the outer casing.As soon as the RPM increases, the spinning motion of the centrifugal and centripetal forces create a net resultant vector that throws the spring loaded internal clutch system “outwards” and against the outer casing. The more the RPM increases, the more the system is forced against the casing which now causes the outer casing and hence the small pulley to rotate. Because this is attached via a belt to the big pulley, the prop begins to spin (only now when the RPM increases and not continuously as before).




Spring loaded clutch moves outwards against the outer housing. This clutch system may be attached to various parts of the engine set up. The easiest is to have it directly onto the crank, however it may be adapted to engage the large pulley as the RPM increases too. The only drawback with this type of set up is that this method works off the crank. This means there is usually very little room for the ring gear and hence an electric start may be difficult to fit. It also requires that the cam shaft may have to be extended to have the large pulley sitting further out, as the small pulley usually sits slightly outwards, due to the space taken up by the clutch on the crank. A system that works easier and that may be universally fitted to most set up’s is that, that works off the large pulley. It will however require that the prop sits slightly further outwards. This however is usually not a problem. (The drawings may be obtained from SKYTRIBE which detail how this is manufactured).
 楼主| 发表于 2009-10-22 06:04:46 | 显示全部楼层




 楼主| 发表于 2009-10-22 07:08:49 | 显示全部楼层
Hey, do I have a question for you?! What do you think keeps the moon from falling into the earth - what keeps it up there in the sky?
We're going to look at some very important "Forces" that have to do with spinning objects like flywheels, crankshafts and other things on a racecar - as well as what's hanging above us.
Before we talk about CENTRIFUGAL force, it's important to understand the exact opposite: CENTRIPETAL force. Here's how it works: Objects that move in a circle are undergoing a continual change in direction (they never travel in a straight line). This means that objects are constantly being accelerated - always toward the center of rotation. Check out Figure 1 below.

The line shows the circular path of a ball moving around a center of rotation. What causes this "centripetal acceleration" are the molecular forces of cohesion within the string. The arrows show how the ball is constantly changing direction.
Molecular Forces of Cohesion: Everything that exists is made up of atoms. Different kinds of atoms can combine to form molecules. For example, H2O is the molecule of water - made up of two atoms of Hydrogen and one atom of Oxygen. Forces of attraction between like molecules are called cohesive forces. It is this molecular attraction that gives a solid (such a steel bar) its strength. (For more on this, please see the lesson on Chemistry Basics).
What happens if we spin the ball too fast? Arrow A shows the direction in which CENTRIPETAL force acts. As long as a CENTRIFUGAL force (Arrow B) is equal to the CENTRIPETAL force, everything is fine (in equilibrium). But if the CENTRIFUGAL force becomes greater than the CENTRIPETAL force, the string will break! Why would this happen?
   The Figure below shows another example.

You may have had this experience on the playground carousel. The faster the carousel turns, the harder it is to hang on! This shows the relationship between CENTRIPETAL and CENTRIFUGAL force.
CENTRIPETAL force was how hard your arms pulled on one another to hold on. CENTRIFUGAL force was trying to pull your hands apart. At some point, the CENTRIFUGAL force overpowered the CENTRIPETAL force, and stick boy took a header off the carousel! Note that the CENTRIPETAL force acts towards the center of the carousel and the CENTRIFUGAL force acts away from the center of the carousel.
This same action occurs in all materials, such as flywheels, tires and all of the belt pulleys on your racecar! The molecular structure of the material must be strong enough to supply the CENTRIPETAL force need to match the CENTRIFUGAL force created by high rotational speeds. If the molecular structure is too weak, a flywheel will break apart. This is why most racing sanctioning bodies require "scatter shields" on some high-powered cars with high-revving engines!
Check out the picture below.

The figure above shows two steel balls connected to a shaft by springs. When the shaft rotates, the steel balls will move outward from the shaft. This is CENTRIFUGAL force in action and is basically how a CENTRIFUGAL clutch works (see below). It's also how the inside of some engine ignition distributors mechanical advance mechanism works. The faster the distributor turns, the weights move out and change the ignition advance of the engine. We'll learn more about this in the auto ignition systems lessons. Check out the picture on the right.


The figure above shows a simple illustration of a CENTRIFUGAL clutch like those used on racing karts. The hub is connected to a chain sprocket. The weights are connected to a shaft that is connected to the engine. When the engine spins fast enough, the shoes move out against the hub. Friction between the shoes and hub makes the hub start turning. You can tune the clutch by changing the strength of the springs or weights of the shoes. Hey, did you know that this same kind of clutch tuning is used on Top Fuel Dragsters and Funny Cars? Yep, the crew chiefs on those high-powered hot rods know all about CENTRIFUGAL force and how to use that knowledge to win races!
 楼主| 发表于 2009-10-22 07:21:13 | 显示全部楼层

ALL-TITANIUM UNITS AVAILABLE.
AT MRP, WE CAN CUSTOM BUILD ANY OF OUR UNITS IN TITANIUM LIKE THE 10" ALL-TITANIUM UNIT PICTURED HERE.
SO IF YOUR APPLICATION REQUIRES A CLUTCH THAT CAN HANDLE THE ABUSE DISHED OUT BY TODAY'S (AND TOMORROW'S) HIGH OUTPUT ENGINES LET US CUSTOM BUILD YOU THAT UNIT YOU CAN BE CONFIDENT WITH.
WE CAN ALSO CONSTRUCT A UNIT USING A BLEND OF MATERIALS TO CREATE A HIGH QUALITY CLUTCH AT A VERY REASONABLE PRICE.
CALL US WITH YOUR QUESTIONS ABOUT TITANIUM COMPONENTS.

NEW - 10.5 AND 11" PEDAL CLUTCHES AVAILABLE FOR DRAG RACING AND TRUCK AND TRACTOR PULLING. AVAILABLE IN ALUMINUM AND TITANIUM OR MIXED COMPONENTS TO BUILD THE PERFECT UNIT FOR PERFORMANCE, DURABILITY AND BUDGET.


NEW - 8 INCH FULL CENTRIFUGAL CLUTCHES. OUR NEW 6 LEVER 6 STAND UNIT PROVIDES YOU WITH ADDED PLATE LOAD AND TORSIONAL CAPACITY OVER THE COMPETITION.
AVAILABLE WITH OR WITHOUT STARTER GEARS FOR BLOWN OR UNBLOWN APPLICATIONS. TWO DISC COMPOUNDS AVAILABLE FOR THIS UNIT.


NEW - 12.5 CENTRIFUGAL ASSISTED PEDAL CLUTCHES. QUICKLY BECOMING THE STANDARD STYLE CLUTCH FOR DIESEL PULLING AND DIESEL TRUCK DRAGS. TOP OF THE LINE UNIT.
AVAILABLE IN 2 TO 6 DISC APPLICATIONS WITH OR WITHOUT FLYWHEELS. CUSTOM FLYWHEELS AVAILABLE FOR MOST ENGINES.


LOOKING FOR TITANIUM DRAG RACE UNITS? WE PROBABLY HAVE IT, AND IF WE DON'T WE CAN BUILD IT, JUST ASK!


10" FULL CENTRIFUGAL CLUTCH SHOWN WITH LIGHTENED FLYWHEEL. POPULAR APPLICATIONS INCLUDE 4X4 TRUCK PULLING ( APPROX.10 LBS LIGHTER THAN 11" ) AND DRAG RACE APPLICATIONS.
THIS UNIT CAN ALSO BE USED IN SMALLER SERIES DIESEL TRACTOR APPLICATIONS WITH CUSTOM STEEL BILLET FLYWHEEL. A PEDAL VERSION OF THIS UNIT WILL BE AVAILABLE SOON.
PLEASE CALL FOR MORE INFO


11" FULL CENTRIFUGAL 6 STAND WITH 9TH FLOATER DRIVER THIS CLUTCH IS USED IN A VARIETY OF DIFFERENT APPLICATIONS.
VERY POPULAR IN 4X4 TRUCK PULLING, TRACTOR PULLING AND MUD RACING.
PLEASE CALL FOR MORE INFORMATION ON THESE UNITS.


11" FULL CENTRIFUGAL 12 STAND SHOWN WITH OPTIONAL STEEL BILLET CUSTOM FLYWHEEL TO FIT A FORD 9700 SERIES TRACTOR PULLING APPLICATION. THIS CLUTCH IS A MUST HAVE FOR THIS TYPE OF APPLICATION.
AVAILABLE FOR MOST DIESEL APPLICATIONS INCLUDING JOHN DEERE, I.H. CASE ETC.
CALL FOR MORE DETAILS.
发表于 2009-10-22 09:06:25 | 显示全部楼层
不错不错 真不错。!!!
发表于 2012-8-19 22:09:33 | 显示全部楼层
谢谢!!!!!!!!!!!!
发表于 2012-8-19 22:10:54 | 显示全部楼层
谢谢!!!!!!!!!!!!
发表于 2012-8-19 22:42:14 | 显示全部楼层
好东西啊!!!!!!!!!!!!!!!
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