slider-crank mechanism

slider-crank mechanism

 arrangement of mechanical parts designed to convert straight-line motion to rotary motion, as in a reciprocating piston engine, or to convert rotary motion to straight-line motion, as in a reciprocating piston pump. The basic nature of the mechanism and the relative motion of the parts can best be described with the aid of the accompanying figure—>, in which the moving parts are lightly shaded. The darkly shaded part 1, the fixed frame or block of the pump or engine, contains a cylinder, depicted in cross section by its walls DE and FG, in which the piston, part 4, slides back and forth. The small circle at A represents the main crankshaft bearing, which is also in part 1. The crankshaft, part 2, is shown as a straight member extending from the main bearing at A to the crankpin bearing at B, which connects it to the connecting rod, part 3. The connecting rod is shown as a straight member extending from the crankpin bearing at B to the wristpin bearing at C, which connects it to the piston, part 4, which is shown as a rectangle. The three bearings shown as circles at A, B, and C permit the connected members to rotate freely with respect to one another. The path of B is a circle of radius AB; when B is at point h the piston will be in position H, and when B is at point j the piston will be in position J. On a gasoline engine, the head end of the cylinder (where the explosion of the gasoline-air mixture takes place) is at EG; the pressure produced by the explosion will push the piston from position H to position J; return motion from J to H will require the rotational energy of a flywheel attached to the crankshaft and rotating about a bearing collinear with bearing A. On a reciprocating piston pump the crankshaft would be driven by a motor.

* * *


Universalium. 2010.

Игры ⚽ Поможем написать курсовую

Look at other dictionaries:

  • eccentric-and-rod mechanism — ▪ mechanics  arrangement of mechanical parts used to obtain a reciprocating straight line motion from a rotating shaft; it serves the same purpose as a slider crank mechanism and is particularly useful when the required stroke of the… …   Universalium

  • eccentric and rod mechanism — Arrangement of mechanical parts used to obtain a reciprocating straight line motion from a rotating shaft. It serves the same purpose as a slider crank mechanism and is particularly useful when the required stroke of the reciprocating motion is… …   Universalium

  • кривошипно-ползунный механизм — slider crank mechanism Рычажный четырехзвенный механизм, в состав которого входят кривошип и ползун. Шифр IFToMM: 1.3.36 Раздел: СТРУКТУРА МЕХАНИЗМОВ …   Теория механизмов и машин

  • Multibody system — A multibody system is used to model the dynamic behavior of interconnected rigid or flexible bodies, each of which may undergo large translational and rotational displacements. Contents 1 Introduction 2 Applications 3 Example 4 Concept …   Wikipedia

  • Torsional vibration — is angular vibration of an object commonly a shaft along its axis of rotation. Torsional vibration is often a concern in power transmission systems using rotating shafts or couplings where it can cause failures if not controlled. In ideal power… …   Wikipedia

  • machine — machineless, adj. /meuh sheen /, n., v., machined, machining. n. 1. an apparatus consisting of interrelated parts with separate functions, used in the performance of some kind of work: a sewing machine. 2. a mechanical apparatus or contrivance;… …   Universalium

  • кулисный механизм — coulisse mechanism, inverted slider crank mechanism Рычажный механизм, в состав которого входит кулиса. Шифр IFToMM: Раздел: СТРУКТУРА МЕХАНИЗМОВ …   Теория механизмов и машин

  • кривошипно-ползунный механизм — Рычажный четырехзвенный механизм, в состав которого входят кривошип и ползун. [Сборник рекомендуемых терминов. Выпуск 99. Теория механизмов и машин. Академия наук СССР. Комитет научно технической терминологии. 1984 г.] Тематики теория механизмов… …   Справочник технического переводчика

  • Linkage (mechanical) — This article is about assemblies of links designed to manage forces and movement. For other uses, see Linkage. Variable stroke engine (Autocar Handbook, Ninth edition) A mechanical linkage is an assembly of bodies connected together to manage… …   Wikipedia

  • keyboard instrument — ▪ music Introduction       any musical instrument on which different notes can be sounded by pressing a series of keys, push buttons, or parallel levers. In nearly all cases in Western music the keys correspond to consecutive notes in the… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”