The traction effort of the winch

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• traction effort through block

oh, already these extreme trips, competitions on SUVs, overcoming the most difficult countries of the country. Did you imagine these pictures right away and wanted to feel it all on your own? Of course, everyone wants to survive these emotions and overflow adrenaline! But for such extreme competitions or ordinary off -road trips, you need to prepare carefully. Every little thing should be perfect and tested. Especially winch , because if we talk about sports on SUVs, then the winch is a part of the base. It is as one of four wheels, taking away which - the car stops moving. In fact, the choice of winch should be as careful as possible and take into account all the characteristics of the winch choice.

Features of choice of winch:

• load capacity;
• rope length;
• possible winding speed;
• network voltage (if electric winch );
• consumer power.

And the most important thing you need to know when choosing a winch, then this traction effort it has.



What is the traction effort of the winch and how to calculate it properly?

Not every winch is omnipotent, each is designed for different use for different techniques. The traction effort is a parameter that indicates the approximate weight that the winch can move. If the maximum traction force of the winch is not sufficient for your SUV, then it will not be possible to pull it out due to the usual lack of power. You do not need the experts of the experts too powerful, because the price will be higher, and the device will not perform its operation.

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measured this parameter in British pounds (LB) at the international level, where one pound is 0.454 kg. As for the CIS countries, the measurements remain in kilograms (kg).

accurate traction effort in real time is impossible, because the calculation is affected not only by the weight of the SUV, but also by the surface where the car stuck. It is because of these factors that the maximum traction effort of the winch is determined approximately, however, with the most possible accuracy to reality. To make the correct calculation of this actual parameter, you only need to determine the traction effort of the winch with the formula:

required thrust = mass of car (friction factor + lifting factor).

where:

• car mass - maximum weight during the intended operation (ie, the possible luggage, power kissing and the winch itself are taken into account);
• friction factor is a value that indicates the resistance of motion on a particular surface;
• lifting factor - the position of the car at the time of its stretching (vertically upwards or horizontally forward).

to calculate the maximum traction effort of the winch should be determined by determining the most difficult development of events and influence factors.

Friction Factor

dry sand	Gravel	dirt	swamp	wet sand	dry road
0.18	0.2	0.32	0.52	0.22	0.15

rise resistance is determined, taking into account the value of the surface of the surface or lifting level.

Rise Factor

is calculated as a percentage if the movement of the car is at an angle of inclination.

5%	10%	20%	30%	50%	70%
0.06	0.11	0.2	0.3	0.44	0.58

Suppose that in the competitions we control the SUV 2800 kg, which is tight in the swamp pit with a slope of approximately 20%. That is, you need to make the right calculation and get the winner with the following traction efforts:

2800 (0.52 + 0.2) = 2016 kg.

When calculating it is better to consider the worst position of the car (dirt, swamp). Also, you should not forget about the possible additional load.



traction effort through block

When choosing a winch, you should always pay attention to all the components of the devices: slings, scale, cable, hooks. These spare parts must correspond to the load of traction.

For reinsurance and confidence that your winch will withstand the test and all loads can be supplemented with a hoisting device - polypast. It is a tool consisting of a wheel through which the rope passes. Using this unit, you can almost double the traction. And if you increase the combination of these blocks, you can also increase the power of the winch 4 or more times.



What is the efficiency of this design? And the fact that the rope is divided into two parts and now the traction effort is divided into two. Meanwhile, the length of the rope, which is required to lift the same cargo, is doubled. This helps to facilitate the work of the drum, because the entire rope is not wound immediately by slowing down the work of the winch.

If you have problems or questions about choosing a winch, then ask questions from the company experts vnedorognik .

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