The layout of the air distribution mechanism of tractor parts

In our production and life, the air distribution mechanism of tractor parts has a significant impact on us, so what is the layout of the air distribution mechanism of tractor parts? Let's take a look together next.

The following is a list of contents:

The top-mounted valve of tractor parts

Camshaft layout of tractor parts

Camshaft transmission mode of tractor parts

The top-mounted valve of tractor parts

The valve overhead type of simplicity tractor parts is the most widely used type of valve mechanism. The intake and exhaust valves are hung upside down on the cylinder head. The valve train of tractor parts includes valves, valve guides, valve seats, spring seats, valve springs, lock plates, and other parts; the valve train of tractor parts generally consists of rocker arms, rocker shafts, pushrods, tappets, camshafts, and timing Gear composition. When the working cycle of the cylinder needs to open the valve for ventilation, the crankshaft drives the camshaft to rotate through the transmission mechanism, so that the cam protruding part on the camshaft pushes the rocker arm to swing through the tappet, pushrod, and adjustment screw. The other end pushes down to open the valve while further compressing the spring. When the apex of the convex part of the cam turns over the tappet, the thrust to the tappet is gradually reduced. Under the action of spring tension, the opening of the valve of the tractor parts gradually decreases until it is finally closed. During compression and work stroke, the valve closes tightly under the action of spring tension.

Camshaft layout of tractor parts

(1) The camshaft of the under-mounted camshaft valve mechanism of simplicity tractor parts is installed in the crankcase, and it is directly engaged by the camshaft timing gear and the crankshaft timing gear and is driven by the crankshaft. The valve drive unit includes all the parts mentioned above, and it is the most widely used.

(2) Camshaft The camshaft of the centrally mounted valve mechanism is located on the upper part of the cylinder block. To reduce the quality of the reciprocating motion of the valve drive mechanism, for high-speed engines, the position of the camshaft can be moved to the upper part of the cylinder block, and the camshaft of the tractor parts directly drives the rocker arm through the tappet without the pushrod. Due to the long distance between the centerline of the crankshaft and the camshaft for this type of valve mechanism, an intermediate gear (idler) is generally added in the middle.

(3) The camshaft of the camshaft-mounted air distribution mechanism of tractor parts is arranged on the cylinder head. The camshaft drives the valve directly through the rocker arm, without tappets and pushrods, which greatly reduces the mass of reciprocating motion, and has the lowest requirements on the camshaft and valve springs, so it is suitable for high-speed enhanced engines.

Camshaft transmission mode of tractor parts

The camshafts of tractor parts are driven to rotate by the crankshaft. They can be driven by timing gears, timing chains, or timing belts. Each time the four-stroke engine completes a working cycle, the crankshaft rotates twice, and the intake and exhaust valves of each cylinder are opened once, that is, the camshaft of the simplicity tractor parts only rotates once, so the transmission ratio of the crankshaft to the camshaft is 2:1.

JOC Machinery Co., Ltd. was founded in the year 2000, specializing in foreign trade of machinery parts and complete sets of equipment. The above is the relevant content about the main failures of the air distribution mechanism of the tractor parts. If you are concerned about the case tractor parts, international tractor parts, Farmall tractor parts, simplicity tractor parts, big tractor parts, if you are interested, you can contact us, our website is http://www.jocmachinery.com.