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What is a cotter and when is it used?

What is a cotter and when is it used?

Cotter joints are used to support axial loads between the two rods, tensile or compressive. Although a cotter joint will resist rotation of one rod relative to the other, it should not be used to join rotating shafts.

What is cotter and knuckle joint?

Cotter and knuckle joints are temporary fasteners used to connect two rods transmitting axial force. A cotter is a tapered piece of flat, mild steel connecting two coaxial rods. The cotter contacts the two rods through frictional contact force.

Where is sleeve and cotter joint used?

The applications of the sleeve and cotter joint is the joint between the piston rod and crosshead of the engine.

What is cotter in a cotter joint?

4.2.1 Cotter joint. A cotter is a flat wedge-shaped piece of steel as shown in figure-4.2. 1.1. This is used to connect rigidly two rods which transmit motion in the axial direction, without rotation. These joints may be subjected to tensile or compressive forces along the axes of the rods.

What is purpose of cotter joint?

A cotter joint is used to support the axial load between two coaxial rods, which are the tensile and compressive loads. Although a cotter joint will resist the rotation of one-rod relatives to the other, it should not be used to join a rotating shaft.

Why gibs are used in a cotter joint?

Moreover, gibs provide a larger bearing surface for the cotter to slide on, due to the increased holding power. Thus, the tendency of cotter to slacken back owing to friction is considerably decreased. The jib, also, enables parallel holes to be used.

What are the applications of knuckle joint?

Application:

  • Tie rod joint of roof truss.
  • Tension link in bridge structure.
  • Link of roller chain.
  • Tie rod joint of jib crane.
  • The knuckle joint is also used in tractor.
  • Connecting rods between locomotive wheels.

What is the function of knuckle joint?

A knuckle joint is a type of joint which connects two cylindrical rods whose axes lies on the same plane and are under a tensile load. It is used to transmit axial tensile force. This joint allows angular movement of the two cylindrical rods in one plane.

What is the application of cotter joint?

Application of Cotter Joint It is used to connect piston rods in a crosshead in a steam engine. It is used to connect the piston rod with its extension. It is also used in bicycles to connect pedals to sprocket wheels.

What are the types of cotter joint?

There are three types of cotter joint for connecting two rods by one coater:

  • Socket and spigot cotter joint.
  • Sleeve and cotter joint.
  • Gib and cotter joint.

What are the application of a cotter joint?

Application of Cotter Joint It is used to connect piston rods in a crosshead in a steam engine. It is used to connect the piston rod with its extension. It is also used in bicycles to connect pedals to sprocket wheels. Foundation Bolt.

What are the main parts of a cotter joint?

Cotter Joint has mainly three components – spigot, socket and cotter as shown in Figure 9.1. Spigot is formed on one of the rods and socket is formed on the other. The socket and the spigot are provided with a narrow rectangular slot. The cotter is tightly fitted in this slot.

Why do you use a gib and Cotter joint?

Moreover, gibs provide a larger bearing surface for the cotter to slide on, due to the increased holding power. Thus, the tendency of cotter to slacken back owing to friction is considerably decreased. The jib, also, enables parallel holes to be used.

How is the Cotter joint used in a steam engine?

The Cotter Joint Failures are as follows. Design of Single eye and double eye. The applications of Cotter Joint are as follows. It acts as a joint between the crosshead and the piston rod of steam engine. It acts as a foundation bolt. The cotter joint is used between the railway bogies.

Which is the female part of the Cotter joint?

The Cotter joint Assembly or the Parts of Cotter Joint are as follows. The explanation for the parts of Cotter Joint are as follows. The socket is the female part of the Cotter joint which has a hole at the center such that the spigot can fit into it. It also has a rectangular slot on its surface such that the cotter can pass through it.

When to use Cotter’s joint and knuckle joint?

Cotter’s joint is used to connect two rods subjected to compressive or axial tensile loads. It is not at all suitable to connect rotating shafts which transmit torque.