Hay lift. Drawing, description

TOOLS AND MECHANISMS FOR AGRICULTURE
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Hay lift. Drawing, description

Tools and mechanisms for agriculture

Directory / Tools and mechanisms for agriculture

With the growth of livestock on farmsteads, it became necessary to increase the fodder base. Forage harvesting is a very laborious process, requiring great effort, and the weather does not allow enough fine days for this. Manually, in the old fashioned way with a scythe and a rake, it became increasingly difficult to cope with this task. Meanwhile, trucks and tractors gradually began to appear in private households. They needed various agricultural implements, trailed and mounted units. In particular, balers began to be used for harvesting hay. Now hay is pressed into rolls of about 200 - 300 kg. They have to be transported from the field to the storage area. But try to lift such a weight and throw it into the back of a truck or even lift it onto a tractor cart! Therefore, the idea arose to make the so-called tractor bale lift - a rear-mounted unit powered by a tractor hitch.

This idea was brought to life last year. It turned out, in my opinion (and neighbors too), a simple and very easy-to-use loader. The main details in it are a fork-grip, a mast, an arrow and traction, a base, and even a power cylinder, which, however, you cannot do yourself. Of course, I had to make things from what was available or came to hand, mainly at a scrap yard.

The main part of the mechanism - the mast - was built from the pushing beam ("carrier") of the bulldozer knife of the DT-75 tractor. It was a box-shaped thick-walled beam with a section of 140x120 mm and a length of more than 3500 mm. I cut it to the desired length - 2007 mm. I was lucky, not having such a pipe, I would have to weld it from channels or corners.

Under the mast base - a horizontal support, I took a rectangular pipe 120x100 mm 800 mm long - according to the dimensions of the tractor hitch. I put plugs with pins on both ends of it - they are needed to connect the base to the hinge.

The welded connection of the mast with the support was reinforced with scarves, in order to avoid breaking this place when lifting the load.

hay lift
Lift scheme: 1 - fork; 2 - copying rod (O50); 3 - arrow (100x100x4); 4 - mast (140x120x6); 5 - main thrust (40x40x4); 6 - base beam (120x100x4); 7 - slope (60x60x3); 8 - power hydraulic cylinder; a - h - splints of arrows and bases

hay lift
Mast base and guide rod

hay lift
Fork grip. Above the main beam fastening of an arrow and a copy rod

The mast also needs a lifting boom. For it, I used a wheel support balancer from an LDG-10 cultivator with a profile measuring 100x100 mm, from which I made a blank for such an arrow 1250 mm long. Now it's the turn to articulate both parts in the upper part. To do this, two plates with holes for the pin were welded to the walls at the end of the boom. I welded a sleeve under the same cotter pin to the main mast. By connecting the boom and the mast, I got, as it were, one folding part, made up of two parts.

I took the hydraulic cylinder for lifting the boom from the PKU-08 front loader. Its weight is about 30 kg. For my lift, it was important that its center distance was at least 940 mm, and the piston could extend up to 630 mm.

For the manufacture of the fork, I used part of the KPS-4 trailed cultivator and the GAZ-53 axle shaft. From the trimming of the trailer, I received the base of the grip - a beam with a section of 110x70 mm and a length of 500 mm. Two axle shafts with a diameter of 40 mm and a length of 78 mm went to the teeth. For articulation with traction and boom, I cut out lugs with holes for cotter pins. All connections between these parts are welded. In addition, a metal strip additionally strengthened the teeth with the base, in order to avoid their deflection under the weight of hay rolls.

Link, boom and fork connection unit (click to enlarge): 1 - grip tooth; 2 - overlay; 3 - thrust eye; 4,7 - cotter pins; 5 - copying thrust; 6 - arrow; 8 - boom eye; 9 - base

Mast base (click to enlarge): 1 - mast; 2 - slope; 3 - base beam; 4 - plug; 5 - pin

It was also necessary to make sure that the gripper constantly kept a horizontal position during raising and lowering the boom. To do this, I took a piece of a thick-walled pipe 1350 mm long and welded its eyes to both ends. The result was a "copying" arrow thrust (passing parallel to the arrow from the top of the mast to the grip). For fastening the thrust, it was necessary to weld lugs to the end of the mast - from two more metal plates 8 mm thick and 23 mm high.

The lower end of the rod was bent at a slight angle and connected to the base of the fork. This is done so that when the boom is fully raised, the grip is somewhat lowered down from the horizontal position. This made it possible to put the roll in the body of a car, trailer, both lying down and standing up.

From another thick-walled square pipe with dimensions of 40x40 mm, I made the main thrust 2100 mm long. It had to pass from the top of the mast to the bracket of the central link of the tractor linkage. Therefore, I again welded lugs to its upper end, and a hinge with a fastening screw to its lower end. Such a long thrust helped to increase the travel of the mast.

hay lift
Tractor bale lifter, rear-mounted unit powered by a tractor hitch

hay lift
The "carrier" (shown by the arrow) of the bulldozer knife of the DT-75 tractor. Similar was used to make the lift mast

hay lift
The balancer (shown by the arrow) of the wheel support of the ploughshare LDG-10. The same was used to make

Acting with a tractor linkage, I got the opportunity, due to the work of a long traction, to tilt the mast of the lift at a certain angle as needed, and with the help of a power cylinder, to control the boom. The parallelogram formed by the boom, the copying rod and both sides of their attachment, allows you to keep the fork in a horizontal position under the load. In the future, with the fork removed, it is possible to make and insert a removable extension with a hook inside the boom, which will make it possible to lift not only hay rolls, but also other various loads weighing up to 700 kg.

In conclusion, I must note that the labor I spent on the manufacture of such a lift was fully justified. The mechanism showed itself well in operation, allowing us to minimize the time required for hay harvesting in our farm.

Author: N.Golovanov

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