Baler PR-F-180: technical characteristics

For efficiency and mechanization of agricultural work, farmers purchase special equipment. The PRF-180 baler is an economical and progressive solution with high production rates for collecting hay and straw.

Reviews from the owners of such agricultural machines are only positive. Working with PRF-180 speeds up the process of completing assigned tasks as much as possible. By automating agricultural work with the help of this unit, productivity increases, physical labor is minimized, and production costs are reduced. Its productivity in comparison with other models is quite high: in 1 hour of operation of the mechanism you can wind up to 30 rolls of pressed material.

About enterprises -

Bobruisk has been working since 1974. In Soviet times, it produced fertilizer spreaders with a lifting capacity of 8 to 18 tons. (More than 26 thousand such agricultural machines per year). In the 90s, it became obvious that the only way for an enterprise to survive in new economic conditions was to reorient production towards new, competitive types of products and significantly expand the range of products.

Since that time, he began to produce a wide range of goods that were in demand on the market in all republics of the former Soviet Union: trailers and semi-trailers for cars and tractors, including tippers; scales; grain grinders (crushers); equipment for harvesting and post-harvest processing/sorting of potatoes; garage doors of all types; fences and fences, stoves and barbecues, etc.

It was also decided to start production of machines for mechanizing forage harvesting work. Moreover, the issue of mechanization of labor in the procurement and distribution of feed was approached in a comprehensive manner. Balers of the “PRF” type are produced in various modifications, so that they can be used in both large and small peasant farms, and even in subsidiary farming.

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In parallel with the balers, the plant's design bureau developed and subsequently put into production TR-F-5 roll transporters; unwinder-distributor of roughage - RGK-1; four-rotor disc mower KDN-210, rake-tedder GVR-630 and feed dispenser KRF-10. Thus, Bobruiskagromash produces agricultural machines for each stage of feed procurement and feed distribution.

Since 1995, Novosibirsk has been producing NASH brand sunflower and corn harvesters, and since the early 2000s, also cultivators, drum mowers and roll balers of several types. Including a model similar to the Bobruisk “PRF-180” - “PR-180M”. Let's consider the main technical characteristics, features of the design and operation of this agricultural machinery.

Specifications

The baler moves on a wheeled chassis and uses diesel fuel to operate.
Tractor used in technical connection – from 1400 kg and above. Read more about the characteristics in Table 1. Table 1 - Technical characteristics of the PR-F-145 baler

Tractor DT 75: description, technical characteristics, photos, application.

Read the description of a rotary mower for a walk-behind tractor here.

Purpose of "PRF-180" on the farm and its main features

The main purpose of the beltless round baler "PRF-180" with a permanent bale chamber is to mechanize and automate the process of harvesting hay and straw, reducing manual labor to a minimum. This is a tractor semi-trailer with one axle and a cylindrical bale chamber. The chamber is of a completely closed design, helping to reduce the amount of feed loss to a minimum. The baler collects windrows of hay or straw cleanly and efficiently, no less efficiently than with a rake and fork. And it rolls them into rolls weighing up to 700 kilograms of hay and up to 400 kg of straw, securing these rolls with twine.

The result of the work of "PRF-180" in mowing.

The PRF-180 model is intended for use with tractors of the 1.4 class (Belarus MTZ-80 and MTZ-82, YuMZ-6, etc.) and the second traction class (Belarus MTZ-1221 ", "LTZ-155", etc.) and the type of towing device of the tractor "TSU-1Zh". Equipped with a PTO (power take-off shaft), hydraulic system, electrical equipment outputs. The design of this baler is simple and reliable. It allows you to obtain rolls of hay and straw with a dense structure on the outside, but with a loose middle, for better air circulation and to prevent spoilage.

Features of Round Baler

All models of round balers can be divided into two large groups according to the type of gears. The first group includes beltless devices, which can also be used for fluffing hay. In a beltless press, two chains with a special complex link design are used in the working chamber. The second group includes belt pick-ups. They have belts instead of chains.

Belt models are cheaper, but inferior in strength to beltless ones.

Any roll baler consists of the following parts:

• Cardana,
• Drum type pick-up,
• Working chamber with pressing apparatus,
• Conveyor with a press,
• winding machine,
• A device that controls the density of winding hay and straw,
• Wheels and frames,
• Light elements.

The device of the baler "PRF-180"

The baler can be divided into the following components (units and assemblies):

• Lobovina. The front component of an agricultural machine in which the drive for connecting the trailer to the tractor is located. Namely, PTO - power take-off shaft, safety clutch, shaft with half-couplings, bevel gearbox; drive shaft of the pressing mechanism and rollers. The lobovina is intended for aggregating the trailer with a tractor and ensuring the operation of the picking and pressing mechanisms. Also on the front part there are drawers for tools and skeins of twine, as well as a tying device. Before opening the pressing chamber, the clutch of the pressing mechanism is automatically disconnected by means of a rope pull.

Front view: “PRF-180B” (modification of all-terrain terrain, with increased ground clearance)

• Camera base. The frame on which the press chamber and its direct support are mounted.
• Picker. “Mechanical rake” is an agricultural machine designed for raking and selecting a mass of hay or straw and feeding it into the pressing chamber.
• Press camera. A two-piece metal "half" cylinder designed for forming rolls. On its front part there is a roller, which can be used to regulate the compaction density and, accordingly, the weight of the rolls; as well as the shaft of the pressing mechanism. The rear part opens and closes using hydraulic cylinders, which gives access to the formed roll.
• Pressing mechanism. It is a chain-slat conveyor designed for continuous twisting of the pressed mass.
• Twine wrapping machine. The twine is fed using an electric drive.

The electrical equipment of the baler includes an audible warning signal when a given level of bale density is reached (from 80 to 200 kg of feed mass per cubic meter), and direction indicators. The hydraulic system of the PRF-180 baler consists of three hydraulic cylinders: two of them are used to operate the rear chamber and one is used to operate the pick-up.

Round pick-ups for walk-behind tractors

Hay and straw pick-ups for walk-behind tractors are very popular in small farms that do not have the opportunity to use bulky equipment.

According to user reviews, one of the best models on the market is the pick-up for the RXYK 0850 walk-behind tractor.

It can be used together with a mini-tractor or walk-behind tractor with a power of 24 hp or more. This pick-up works well not only with hay and straw, but also with corn stalks and grass clippings. The range of permissible humidity of raw materials for work is from 17 to 24%.

The pick-up machine for the RXYK 0850 walk-behind tractor is compact: it weighs less than 400 kilograms and dimensions are 115*130*120 cm. The operating speed of the press is from 3 to 5 kilometers per hour, and the productivity is more than 50 rolls per hour of operation. The baler produces rolls 70 cm wide and 50 cm in diameter. The weight of each roll is from 15 to 28 kg.

Operating principle of the PRF-180 pick-up

In the process of forward movement across the field, the spring teeth of the pick-up mechanism rake the entire swath and feed the forage mass into the bale chamber. The lower rollers and rolling pins spin the roll into a mass, and due to the upper pressure grid, it is pressed and compacted. When the specified level of bale density is reached, a sound signal is given to the operator. If the roll is fixed with twine, the machine operator needs to manually feed the twine into the chamber, after which the roll is wrapped and the rope is cut mechanically. The finished roll is unloaded using the lower rollers after opening the press chamber.

In the open position of the camera, the selection mechanism is supported by springs and rests with wheels on the ground, and in the raised position it is secured with latches. To bring it into working position, the tractor power take-off shaft is first connected. The latches open only when the pick-up drive shaft begins to rotate.

Principle of operation

The design uses a special chamber of a closed chain-slat type for pressing raw materials. There is an uninterrupted supply of twine for tying using an electric drive.

The PR-F-145 round picker performs work in several stages:

• collection of rolls of raw materials (hay);
• the process of pressing into rolls of a certain size;
• trouble-free twine tying using an electric drive.

The rolls are pressed tightly and this allows them to be packaged in polymer film. All rolls are well formed in a certain way. The upper part of the product is denser, but the inside structure is loose. This allows the roll not to deteriorate and reduces the likelihood of mold.

The operating instructions can be downloaded from this link.

Reviews from PRF-180 owners about operating experience

In general, peasants agree that round balers are more convenient, more technologically advanced and more practical than square balers. And productivity is higher, and it takes much less time to clean and store rolls than bales (one bale weighs about 15-20 kg). Farmers note: even if the weather turns bad and rain clouds appear, you can quickly remove and roll up windrows of hay or straw from a large area with a roller pick-up and save them from dampness. This trick won't work with bales.

A haystack loads finished rolls of hay.

Among the disadvantages of the PRF-180 pick-up, it is necessary to make the windrows uniform and uniform for clean, high-quality harvesting. Therefore, sometimes preliminary preparation and alignment of the windrows is required. Not everyone likes the size and weight of the rolls (too large). Almost all owners of the “PRF-180” talk about the low quality of the metal from which it is made, nostalgically recalling the high-grade metal that agricultural machinery was made of during the Soviet era. However, the quality and integrity of the assembly of the Bobruisk plant does not raise any complaints.

It is significantly superior to “PRF-110”, “PRF-145”, “PRF-150”, etc. baler models. Within an hour you can roll up to 25-30 rolls of hay or straw. In general, the “PRF-180” is characterized as an unpretentious and reliable agricultural machine for large farms, or for the production of feed in large volumes for sale.

New and used PRF-180 balers on the market

This baler model is supported by the fact that Bobruiskagromash supplies it not only to Russia and other republics of the former Soviet Union, but also to more than 20 countries around the world (including most former socialist countries, Finland, Sweden and Denmark; countries of Central and South America). "PRF-180" demonstrates a very good combination of price and quality.

There are dealers of the Bobruisk plant in all agricultural regions of Russia and the CIS, so there are no problems with purchasing PRF-180 balers and spare parts for them. The new “PRF-180” costs 400-480 thousand rubles (plus/minus several tens of thousands, depending on the region). The price for used balers of this model, produced in 2000, varies from 220 to 320 thousand rubles.

Mechanism design

This conveyor is an improved baler PRF-750. Its distinctive features are:

• changes in the safety, main clutch, frontal clutch;
• replacement of support skis with support wheels;
• use of tire 10.00-16 Bel PT-5.

Materials at PRF comply with all norms, standards and requirements. High-quality production of spare parts for the PRF-180 baler ensures that all parts have high strength, wear resistance and durability in use. The peculiarity of this device is that it is very simple, but at the same time reliable. This results in a reduction in losses of harvested feed, repair costs, replacement of spare parts, components and uninterrupted operation.

Wrapping device Front and rear chamber Lobovina wheel devices Pressing mechanism diagram No. 1 Pressing mechanism diagram No. 2 Tensioning device of the driven shaft Chamber base Pick-up diagram

The main elements of the unit are considered to be the following parts of the structure:

• forehead;
• picker;
• pressing chamber;
• camera base;
• wrapping apparatus;
• hydraulic system;
• electrical equipment.

The lobovina is the most important part of the unit. Inside it there is a drive, which consists of a PTO, safety and cam clutches, a bevel gearbox, drive shafts, and rollers. At the front there is a loop for coupling with the tractor. A box for twine and a wrapping apparatus are attached to the front.

The pick-up machine is designed to select the pressed material and supply it to a special chamber. A safety clutch is installed on the drive shaft of the PRF pick-up, which limits the torque transmitted to the unit.

Hydraulic cylinders ensure that the pick-up is raised, and it is lowered under the force of the mechanism’s own weight. When lowering, the conveyor rests on the ground with wheels, and when lifting, it is fixed with latches. When the PTO is engaged, the unit is moved to the working position.