How to quickly uproot a large stump with a minimum of effort

There are situations when it is necessary to uproot a large stump at a summer cottage or in a garden. Digging it up by hand and chopping the roots is very long and difficult; such work may take more than one day. Problems will increase if there is black soil on the site and the roots have grown deep into the ground. There is a way out - you need to use the pulley system.
How to quickly uproot a large stump with a minimum of effort

What you need


The work can be done with a mini-tractor; ordinary vehicle traction will suffice. For the chain hoist, you should prepare a cable, metal blocks, rope, belt slings or tugs. The length of the cable and the number of blocks should be selected taking into account the required force to uproot the stump.

Theory


First you need to understand what a chain hoist is. This is a device assembled from fixed and movable blocks, sequentially encircled by a cable. This kinematic scheme allows you to increase the traction force several times; the more blocks, the greater the force. Each block doubles it, but at the same time the length of the cable increases. For example, a stump needs to be moved one meter, this requires a force of approximately 10 tons, but a mini tractor has a thrust of only two tons.It is necessary to connect five blocks, and the length of the cable without taking into account tension is 10 meters.
How to quickly uproot a large stump with a minimum of effort

This example uses an 18 horsepower mini tractor and a 35:1 pulley set. That is, in essence, the traction force of the tractor will be increased by 35 times.

Uprooting process


Throw a ribbon sling of the appropriate length around the hemp, and use a metal link to connect it to the ribbon cable and the first block.
How to quickly uproot a large stump with a minimum of effort

Wrap the rope or metal cable around the roller of the first block, bring it to the second, then again to the first, and so on as many times as each block has elements.
How to quickly uproot a large stump with a minimum of effort

How to quickly uproot a large stump with a minimum of effort

Tie blocks to nearby trees, use ropes or cables. The main condition is that they must be durable and withstand the load. In our case, the chain hoist consists of seven rollers. All elements must be placed approximately in this plane. The last block should be tied taking into account the direction of movement of the tractor.
How to quickly uproot a large stump with a minimum of effort

Start the mini tractor and gradually tighten the cable.
How to quickly uproot a large stump with a minimum of effort

The system takes its place taking into account the height of the blocks, the cable is tensioned. If the final effort is sufficient, the stump will begin to pull out from the ground.
How to quickly uproot a large stump with a minimum of effort

How to quickly uproot a large stump with a minimum of effort

Check the condition of the pulley, if everything is normal, then continue to uproot the stump. If there is no room for the tractor to move, attach another block and change direction.
How to quickly uproot a large stump with a minimum of effort

How to quickly uproot a large stump with a minimum of effort

Disassemble the chain hoist, load the uprooted stump onto a trailer and take it away from the site.

Conclusion


How to quickly uproot a large stump with a minimum of effort

Blocks installed too low will lift up and severely damage the bark of the trees to which they are attached. You can place scraps of boards between the tree and the cable; they will protect it from severe damage.

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Comments (2)
  1. Сhipset
    #1 Сhipset Guests August 1, 2019 11:17
    3
    Would you like to burn it out, drill a hole in the center, pour in something flammable and set Abdul on fire. If you don’t want to smoke, wet the stump well and put on the bag, it will slowly rot.
  2. Guest Yuri
    #2 Guest Yuri Guests 2 August 2019 10:02
    7
    Let's do the math, to pull out a stump, you need to buy a tractor with a trailer, a set of blocks, 100 meters of cable. You'll get a golden stump. In addition, you need to find something to cling to, and it’s not a fact that the stump will come out first.