EF-3.4 – Mechanisms – Bar Linkages

The EF-3.4 Bar Linkages experiments kit comprises of different bars or links configured into a range of different linkage mechanisms, including four-bar linkages. Rotary, linear movement and planar linkages allowing students to trace the relative movements of each linkage and joint.

A linkage is an assembly of links and joints that provide a desired output motion in response to a specified input motion.

Description

The Engineering Fundamentals range enables students to gain an understanding of the principles of engineering by the process of learning via experimentation.

The EF-3.4 Bar Linkages experiments kit comprises of different bars or links configured into a range of different linkage mechanisms, including four-bar linkages, rotary and linear movement and planar linkages allowing students to trace the relative movements of each linkage and joint.

A linkage is an assembly of links and joints that provide a desired output motion in response to a specified input motion.

One such example and one of the simplest moveable closed-chain linkages is the four-bar which consists of four bars or links connected in a loop by four joints and can be used for many mechanical purposes including converting rotational motion to reciprocating motion and converting reciprocation motion to rotational motion.

Features & Benefits

Features

• Neatly presented in an easily identifiable and durable storage tray
• Trays have clear lids making it easy to see their contents
• Pictorial tray contents list to identify missing components easily
• Accompanied by a detailed manual with various practical exercises
• Clear and concise assembly instructions for each experiment
• Multiple experiments per kit
• Toolless assembly

Benefits

• Hands-on understanding from lessons
• Improve the student’s dexterity by self-assembly with the instructions provided

• Four-bar linkages – crank rocker, double rocker, drag link and parallelogram
• Determine degrees of freedom of a four-bar linkage
• Straight line linkages – Watt’s straight line, Chebyshev, Peaucellier- Lipkin, Hart’s inversor and Hoeken’s
• The different ways motion is transferred from one motion to another. For example, linear to rotary and linear to rocking
• The different motions scribed by different locations on a bar linkage system
• What is meant by constrained motion?
• Pantograph
• Ackermann steering
• EF-BU Base Unit
• Statics Experiments

– EF-1.1 Forces
– EF-1.2 Moments
– EF-1.3a Beams
– EF-1.3bTrusses
– EF-1.4 Springs
– EF-1.5 Torsion

• Dynamics Experiments

– EF-2.1 Friction
– EF-2.2 Simple Harmonic Motion
– EF-2.3 Rotational Friction
– EF-2.4 Potential and Kinetic Energy
– EF-2.5 Centrifugal and Centripetal Force

• Mechanisms Experiments

– EF-3.1 Cam, Crank and Toggle
– EF-3.2 Simple Mechanisms

• Kinematics

– EF-4.1 Pulleys
– EF-4.2 Gears
– EF-4.3 Drive Systems

• Strength of Materials

– EF-5.1 Tensile Tester

• Options

– EF-WS Workstation

• 2 x 13 Hole linkage
• 4 x 9 Hole linkage
• 2 x 7 Hole linkage
• 4 x 5 Hole linkage
• Removable pivot pin – short, medium, long
• Stand – short, medium, long
• EF-BU Base Unit
• EF-BU on which to build the experiment from the tray components
• Level and stable work surface to mount the EF-BU upon. The optional EF-WS is ideal for this if no suitable desk or bench is available.

Volume: 0.02m³ per tray

Gross Weight: 5.0kg per tray

Tray

Length: 0.430m per tray

Width: 0.312m per tray

Height: 0.080m per tray