If you ask friends who play off-road, is there a tow belt on the car? I believe most people will tell you there is! Trailer rescue is a simple and direct rescue method in four-wheel drive off-road. Compared to other rescue equipment, it is cheap, lightweight and portable. The most important thing is that the rescue effect is simple and direct, and it is a rescue equipment with high cost performance.
Distinguish between tow ropes, hoist belts and trailer belts.
1. Many riders who don't know much about off-road rescue have come up with such a traction rope.
Most non-professional tow ropes have metal parts at both ends, which are very dangerous during rescue. Streamer breakage will cause rebound, and breakage of metal joints can easily cause casualties!
2. The appearance of the trailer belt may be slightly different. You can tell by looking at the
Sling. The thickness may be 1cm thick and 10cm wide. It looks heavy and sturdy. In fact, off-road trailer belts are fundamentally different from lift belts or regular trailers.
During rescues, vehicles are often trapped in sand or puddles. Take mud for example. Mud has a certain adsorption. If you've ever stepped on mud by accident, you're probably familiar with the feeling that your feet are still in the mud with your shoes.
If we use a sling, because the sling is not elastic, the vehicle has a certain initial speed when pulling, and the rope is instantly tightened. Because there is no buffer, the car may not be able to be pulled out with a "bang" sound, the rope may be broken first, and the rear trailer beam may even be pulled out.
According to the lifting industry standard, an ordinary 5-ton lifting belt should withstand 4-6 times its own tensile force during operation, which can withstand a tensile force of 30 tons without breaking. But this number refers to the breaking force that it can withstand in a static state, not an instantaneous huge impact force, so it is not that the quality of the sling is not good enough, but it is not suitable for this kind of impact work.
Advantages of tow straps:
The tow strap is strong enough for towing, it has been scientifically designed to have good ductility and can extend its length by up to 20% under load, this elastic ductility is very useful during rescue.
When the rescue vehicle sprints forward, the trailer belt can be fully deployed to provide a certain buffer to protect the chassis of the rescue vehicle from being damaged by the instantaneous strong impact force.
Secondly, during the traction process, the traction belt reaches a large stroke, and the elastic potential energy is fully gathered, which brings a short and strong rebound effect. This elasticity, combined with the pulling force of the car, acts on the trapped vehicle, making rescue easier and more effective.
Q: Since both industrial slings and cheap ordinary slings are not suitable for off-road rescue, are the same slings suitable for off-road rescue?
A: No, after all, the tow belt is made of fiber, so the instant impact and durability are also aspects to be considered. After using it a few times, the trailer belt I used before suddenly broke, so I had to buy another one. So durability is also an aspect of reference.
