| As we all know that the power is needed indeed for | | | | continuously. For the following double-acting system |
| industrial machines to operate. They are linear motion, | | | | the connecting rod is placed outside the cylinder, in a |
| together with the rotating motion. And it is necessary | | | | large sliding bearing block called a crosshead as a |
| to convert these two motions from each other under | | | | result that the internal pressure works on each side of |
| some operating systems. Thus, the connecting rod | | | | the piston in turn. What else, for the locomotive rods, |
| comes to get this problem out. It is generally used in a | | | | the crank pins are usually mounted directly on one or |
| reciprocating piston engine which affects through | | | | more pairs of driving wheels which are usually in large |
| connecting the piston to the crank or crankshaft. It can | | | | sizes, together with some smaller ones. Above all, |
| be said it plays the role as the engine before the | | | | some details on the major applications on the |
| engine being put into practice. | | | | combustion piston engines are introduced in the |
| In fact, the earliest evidence for a connecting rod | | | | following. It is true that the connecting rod comes to |
| dates back to the late 3rd century AD in Rome. It is | | | | play an important role in the engines. It is commonly |
| firstly used to convert the rotary motion of the | | | | made of steel or aluminum. And the material of |
| waterwheel into the linear movement of the saw | | | | aluminum holds the advantages of lightness and the |
| blades. As time goes by, the conception of the | | | | ability to absorb high impact at the expense of |
| connecting rod is spread to more people around the | | | | durability. Generally speaking, the connecting rod is |
| whole world. Generally speaking, the connecting rod, | | | | under tremendous stress from the reciprocating load |
| being rigid, may transmit either a push or a pull so that it | | | | represented by the piston, actually stretching and being |
| can rotate the crank through both haves of a | | | | compressed with every rotation, and the load |
| revolution. Now, it is widely used in internal combustion | | | | increases to the third power with increasing engine |
| piston engines like the car engine, which is distinctly | | | | speed. In fact, the failure of it would cause catastrophic |
| different from the earlier ones in the steam engine and | | | | engine failure in cars. |
| steam locomotives. | | | | Apart from the connecting rod, there are some |
| For the steam engine, the earlier forms of the | | | | compound rods in need for the developing engines. |
| connecting rod are widely employed. It is know as the | | | | Whatever, it would continue to bring benefits for the |
| chain. It is firstly used in the single-acting system and | | | | industrial proceeding. |
| their outputs rocked back and forth rather than rotating | | | | |