Practical and cool way of knotting fire and rescue ropes 1

After a fire broke out, when the evacuation passage was blocked by the fire demon, it was one of the important choices for people trapped in the lower floors to escape safely through the windows with ropes. Whether the knot can be tied quickly and whether the knot is firm is also one of the key links for safe escape. Everyone can learn how to tie rescue ropes and master this practical skill that can save lives at critical moments!

Double Fisherman's Knot

As the name suggests, it is a change based on the single fisherman's knot. The method only needs to be entangled one more time before tying the knot. The specific method is shown in the figure.

Advantages: Compared with the single fisherman's knot, the double fisherman's knot significantly increases the strength, and it can be used on ropes of different thicknesses.

Disadvantages: The knot shape is larger.

Purpose: Used to connect two ropes or make a rope loop. When making a rope loop, it can usually be used with the Prussian knot in the process of climbing.

Prusik Knot

The Prussian grab knot is the earliest grab knot, and it is also a universal grab knot, which can not only realize self-protection and ascent along the rope. The biggest advantage is that it can be played with one hand in an emergency. The Prussian grasping knot is very firm and can achieve two-way braking, but the disadvantage is that it is difficult to untie after being stressed and the adjustment is not flexible.

[Prussian knotting method]

Use the auxiliary rope to make a rope loop, the length of the rope loop is between 50-100 cm, avoid the knot at the connection when using it, and don't let it be squeezed;

Wrap the auxiliary rope on the main rope and wind it continuously for 3-4 times;

Just tighten the adjustment.

Prusik Knot (Prusik Knot) was first used by Dr. Karl Prusik in the early 19th century. Because of its wide range of use, generally speaking of Knot refers to this knot. Prussian grabbing knots are usually used with chrysanthemum rope double fisherman knot noose. The specific operation method is shown in the figure.

The purpose of grabbing knots:

1. Used to climb along the main rope, the function is the same as the ascender;

2. Used for insurance when descending along the rope;

3. Become several main parts of the Z pulley block during rescue.

Sitting knee dangling knot

When the trapped person uses the "8" ring and "D" hook to save himself by sliding rope, the rope tied to the waist must be tied with a knee hanging knot.

Take one end of the rope in each of the left and right hands, and wind it from the back of the waist to the front of the waist.

The left rope end crosses the right side, the left rope end is up, and the right rope end is down. Exchange the left and right hands.

Pass the rope end of the right hand from bottom to top through the rope, pulling both ends forcefully at the same time.

In the same way, cross the rope head of the right hand with the rope head of the left hand, and the rope head of the right hand is on the top, pass the rope head of the left hand through from bottom to top, and tighten again.

Pass the two strands of rope under the crotch, pass the left and right ends through the rope at the waist from top to bottom, and then pass the rope back to the front.

The left end of the rope passes through the lower side of the loop of the gear, and crosses the right end of the rope, and passes through the right rope from bottom to top.

Then press the rope head toward the right side to the rope head toward the left side, and cross it through from bottom to top, and tighten both hands. At this time, the sitting knee hanging knot is done.