PowerPoint ® Presentation Chapter 2 Rope Rope Construction Wire Rope Fiber Rope.

PowerPoint® PresentationPowerPoint® Presentation

Chapter 2Chapter 2RopeRope

Rope Construction • Wire Rope • Fiber Rope

Rope Construction • Wire Rope • Fiber Rope

Chapter 2 — RopeChapter 2 — Rope

Rope is constructed from fibers, yarn or wire, and strands. These components are twisted together in various ways to form strong and flexible rope.

Rope is constructed from fibers, yarn or wire, and strands. These components are twisted together in various ways to form strong and flexible rope.


The directions of the strand and rope twist affect some of the characteristics of rope, such as flexibility, wear, and tendency to rotate.

The directions of the strand and rope twist affect some of the characteristics of rope, such as flexibility, wear, and tendency to rotate.


Wire rope diameter must be measured at its widest point.

Wire rope diameter must be measured at its widest point.


The breaking strengths of wire ropes vary by type, material, and size.

The breaking strengths of wire ropes vary by type, material, and size.


Rope must not be loaded beyond its safe working load limit, which is a fraction of its breaking strength.

Rope must not be loaded beyond its safe working load limit, which is a fraction of its breaking strength.


Many factors affect the actual force on a sling and the working load limit, which must not be exceeded.

Many factors affect the actual force on a sling and the working load limit, which must not be exceeded.


Tight bends reduce the effective strength of a rope and can permanently damage wires or fibers.

Tight bends reduce the effective strength of a rope and can permanently damage wires or fibers.


Rope bending efficiency increases with bend ratio.Rope bending efficiency increases with bend ratio.


Seizing is wire wrapping added to wire rope to prevent unraveling or loose wires.Seizing is wire wrapping added to wire rope to prevent unraveling or loose wires.


Fiber rope whipping is completed before cutting in order to bind all the strands together.

Fiber rope whipping is completed before cutting in order to bind all the strands together.


Wire rope is composed of a core surrounded by strands, each of which is composed of a specific pattern of wires of different sizes.

Wire rope is composed of a core surrounded by strands, each of which is composed of a specific pattern of wires of different sizes.


The wires in strands can be arranged in different patterns, which changes the strength, flexibility, and wear characteristics.

The wires in strands can be arranged in different patterns, which changes the strength, flexibility, and wear characteristics.


Rope designations use letter acronyms to indicate various rope characteristics.

Rope designations use letter acronyms to indicate various rope characteristics.


Thimbles are installed to form a loop and the ends of the wire rope are fastened with a specific number of clips.

Thimbles are installed to form a loop and the ends of the wire rope are fastened with a specific number of clips.


A swage socket is pressed onto the end of a wire rope with high pressure until the collar conforms to the shape of the rope.

A swage socket is pressed onto the end of a wire rope with high pressure until the collar conforms to the shape of the rope.


Spelter sockets are locked onto a wire rope end by a wedge formed out of the fanned-out wire encased in resin or zinc.

Spelter sockets are locked onto a wire rope end by a wedge formed out of the fanned-out wire encased in resin or zinc.


Wedge sockets hold tightly to a wire rope when it is tensioned.

Wedge sockets hold tightly to a wire rope when it is tensioned.


Synthetic fiber ropes are generally stronger than natural fiber ropes, though the strength varies with construction type.

Synthetic fiber ropes are generally stronger than natural fiber ropes, though the strength varies with construction type.


Fiber rope can be constructed by twisting fibers into yarn, yarn into strands, and strands into rope.

Fiber rope can be constructed by twisting fibers into yarn, yarn into strands, and strands into rope.


Synthetic fiber ropes can be constructed by braiding or plaiting the strands, which may or may not be twisted.

Synthetic fiber ropes can be constructed by braiding or plaiting the strands, which may or may not be twisted.


A splice is the permanent joining of two ropes. A long splice minimizes the increase to the splice area’s diameter.

A splice is the permanent joining of two ropes. A long splice minimizes the increase to the splice area’s diameter.


Eye-loop splices are important for adding hooks, links, or other attachment hardware to the end of a rope.

Eye-loop splices are important for adding hooks, links, or other attachment hardware to the end of a rope.


Crowning is a method of finishing a cut end of fiber rope without whipping.Crowning is a method of finishing a cut end of fiber rope without whipping.

PowerPoint ® Presentation Chapter 2 Rope Rope Construction Wire Rope Fiber Rope.

Documents

Transcript of PowerPoint ® Presentation Chapter 2 Rope Rope Construction Wire Rope Fiber Rope.