Mechanisms (engineering)

A lever is a simple machine consisting of a beam or rigid rod pivoted at a fixed hinge, or fulcrum. A lever is a rigid body capable of rotating on a point on itself. On the basis of the locations of fulcrum, load, and effort, the lever is divided into three types. It is one of the six simple machines identified by Renaissance scientists. A lever amplifies an input force to provide a greater output force, which is said to provide leverage, which is mechanical advantage gained in the system, equal to the ratio of the output force to the input force. As such, the lever is a mechanical advantage d

Kinematics is a subfield of physics and a branch of geometry. In physics, kinematics studies the geometrical aspects of motion of physical objects independent of forces that set them in motion. Constrained motion such as linked machine parts are also described as kinematics. In geometry, kinematics studies the time dependence of geometrical quantities such as position, distance and angular measure with respect to a frame of reference. Most frequently, the quantities that kinematics deals with are the time derivatives of these quantities and the relations between them. Objects whose motion is

device designed to transform input forces and movement into a desired set of output forces and movement

mechanical installation providing a branching of a railway track

type of simple planetary gear train

mechanism that actuates the firing sequence of a firearm or other weapon when pushed down by a finger

mechanism with bendable rotation axis

rotating or sliding piece, with eccentric or variegated profile, in a mechanical linkage

mechanism that transforms continuous rotation into an intermittent rotary motion

thumb|right|Example of modern treadmill thumb|Treadmills at a YMCA

thumb|Self-tailing winch on a sailboat. A Sheet (sailing)|sheet line runs from the sail (left, not shown) behind the winch to a block (lower right, not shown) and only from there back to the winch (lower part). The handle is detachable to ease line handling. thumb|Front of a MAN SE|MAN-based [[fire engine with a built-in winch, e.g. for towing damaged cars after an accident]] A winch is a mechanical device that is used to pull in (wind up) or let out (wind out) or otherwise adjust the tension of a rope or wire rope (also called "cable" or "wire cable").

component for motion-related rotary transmission of torque and rotational frequency

Deliberately complex contraption

right|thumb|upright=2|Cross section of a vessel with a single ballast tank at the bottom

measure of the force amplification achieved by using a tool, mechanical device or machine system

writing implement

mechanical device that allows continuous linear or rotary motion in only one direction

thumb|Illustration of a simple three-axis gimbal set; the center ring can be vertically fixed

a small metallic cap or cup, usually of copper or brass, containing a shock-sensitive explosive compound

interconnected series of two or more gears in a machine

mechanism for automatically controlling the speed of an engine

thumb|An improvised flexible coupling made of car tyre pieces connects the drive shafts of an engine and a water pump. This one is used to cancel out Run-out|misalignment and dampen vibrations. frame|Rotating coupling A coupling is a device used to connect two shafts together at their ends for the purpose of transmitting power. The primary purpose of couplings is to join two pieces of rotating equipment while permitting some degree of misalignment or end movement or both. In a more general context, a coupling can also be a mechanical device that serves to connect the ends of adjacent parts or

electromechanically operated valve

circular disk rigidly fixed to a rotating axle with its centre offset from that of the axle

thumb|Turnbridge windlass lifting road bridge over [[Huddersfield Broad Canal]] thumb|200px|Differential windlass

device that connects ski boot to the ski

assembly of bodies connected to manage forces and movement

thumb|Trammel of Archimedes animated model

assembly of rigid bodies connected by joints to provide constrained motion that is the mathematical model for a mechanical system

Level sensor

type of omnidirectional wheel

thumb|right|320px|The trunnions are the protrusions from the side of the barrel that rest on the carriage.

flexible mechanism that achieves force and motion transmission through elastic body deformation

device used to measure and regulate the speed of a machine

quotient of mechanical output and input power

type of parallel manipulator

thumb|Diagramatic symbol used to represent a dashpot. A dashpot, also known as a damper, is a mechanical device that resists motion via viscous damping. The resulting force is proportional to the velocity, but acts in the opposite direction, slowing the motion and absorbing energy. Kinetic energy is converted to heat. It is commonly used in conjunction with a spring.

transmitting of torque from an electric motor to the output devicewithout any gearing

device consisting of a movable pulley, two wheels with different diameters fixed together serving as the fixed pulley and a chain loop; device multiplying force; machine used to lift heavy loads

governor used to limit the top speed of a vehicle

device for connecting a steering wheel to a vehicle steering mechanism

thumb|A 2.5-ton screw jack. The jack is operated by inserting the bar (visible lower left) in the holes at the top and turning. A jackscrew, or screw jack, is a type of jack that is operated by turning a leadscrew. It is commonly used to lift moderate and heavy weights, such as vehicles; to raise and lower the horizontal stabilizers of aircraft; and as adjustable supports for heavy loads, such as the foundations of houses.

clutch type, limits torque transmission by slipping or uncoupling

uses linked, folding supports in a criss-cross 'X' pattern

graph showing a machine or mechanism as links and joints

mechanism in transmission optimizing

CoreXY is a kinematic motion system, popularized by its use to move the printhead of a 3D printer, or the toolhead in CNC machines, in the horizontal plane. The advantage of this technique is that the two motors used to perform the movement in the horizontal plane are stationary and do not have to move themselves, which can result in less moving mass. Instead, drive belts are used which are connected in an intricate way to provide movement in a Cartesian coordinate system. Compared to conventional Cartesian coordinate 3D printers for fused filament, it can provide increased printing speed due

spring-loaded device made from flat sticks

electromechanical system for controlling events