Types and classification of agricultural

"Selsnab" LLC

Types and classification of agricultural machine-tractor aggregates based on the BELARUS tractors

The agricultural aggregates operated on the basis of the BELARUS tractors are classified according to the following operational signs: Kind of the process to be carried-out: ploughing, sowing, planting, soil-cultivating, harvesting and others.

Method of performing the works: mobile (performing the work in the process of mo- tion; stationary-mobile (performing the work in the stationary or moving state); stationary (performing the work under stationary conditions, when the tractor does not move). Type of driving the tools of the machine: tractional, tractional and driven and driven. The tractor-based tractional aggregates utilize the whole useful power through a traction hitch mechanism or mounted attachment.

The useful power of the tractional-and-driven MTA is utilized simultaneously by traction via traction hitch mechanism of the tractor and through mechanical and/or hydraulic power intake via PTO shaft and free hydraulic outlets of the tractor. The driven MTA’s per- form the work under stationary conditions (the tractor does not move) through mechanical and/or hydraulic power intake via PTO shaft and free hydraulic outlets of the tractor. A transport MTA is a particular example of the tractional aggregate.

The number of machines within the MTA: single- and multi-machine aggregates. A machine performing several working functions, the process modules of which are not intended for using as separate technical mean, is considered to be a single machine. Arrangement of the tools relatively to the longitudinal plane of the tractor:

symmetrical and asymmetrical.

Arrangement relatively to the rear wheels and longitudinal plane of the tractor:

rear, left- and right-side (in the interaxle clearance between the front and rear wheels), front and combined.

Quantity of the jobs to be performed: similar tractor-based aggregates performing a single job; combined or complex ones performing two and more jobs simultaneously by means of several machines; combined ones performing several jobs be means of a single machine; universal ones equipped with replaceable tools capable of performing different op- erations in different time.

According to the method of aggregating with the tractor, the agricultural machines are divided into the following types:

1. MOUNTED: to be fastened to the joints of the upper and lower rods of the traction hitch mechanism at three points. The weight of the machine in the transport position is perceived completely by the tractor. The constructional elements of the machine in the transport position have no contact with the bearing area. When re-arranging the machine from the working position to the transport one, the point of connecting the machine with the tractor is moved forcedly to a new height.

2. SEMI-MOUNTED: to be fastened at three points to the joints of the upper and lower rods of the traction hitch mechanism, but at only two points – to the joints of the lower roads of the traction hitch mechanism. The weight of the machine in the transport position is per- ceived partially by the tractor and, to a greater extent, by its own transport wheels (usually one or two). When re-arranging the machine from the working position to the transport one, the point of connecting the machine with the tractor is moved forcedly to a new height. The two-point articulated joint is implemented by fastening the link pins of the machine mounting axle with the joints of the lower rods of the traction hitch mechanism (the upper rod is not used). The option of use of a cross-bar from the equipment of the tractor or machine is also possible.

3. SEMI-TRAILED: to be fastened commonly to the hitching mechanism at one point by means of a hitching loop. The option of the two-point articulated joint with the mounted attachment (without using the upper rod) is also possible. The weight of the machine in the transport position is perceived partially by the tractor and, to a greater extent, by its own transport wheels (usually at least two). When re-arranging the machine from the working position to the transport one, the point of connecting the machine with the tractor is not repositioned. The semi-trailed machines include also various general- and special-purpose transport facilities, such as general-purpose semitrailers, tank semitrailers, dump semitrailers and special semi-trailed transport facilities for mechanization of jobs in the agriculture. Transportation facilities aggregated by means of saddle-type coupling arrangement are particular examples of semi-trailed machines.

4. TRAILED: to be coupled usually by means of a hitching loop to the hitching mechanism. The option of the two-point articulated joint with the mounted attachment (without using the upper rod) is also possible. The weight of the machine in the transport position is perceived completely by the machine’s running gear, only the load from the weight of the machine’s coupling arrangement is born by the traction hitch mechanism (or mounted attachment) of the tractor. When re-arranging the machine from the working position to the transport one, the point of connecting the machine with the tractor is not repositioned.

The trailed machines include also various general- and special-purpose transport facilities, such as general-purpose trailers, tank trailers, dump trailers and special semi-trailed transport facilities for mechanization of jobs in the agriculture. Transportation facilities aggregated by means of saddle-type coupling arrangement are particular examples of semitrailed machines. When aggregating the mounted, trailed, semi-mounted and semi-trailed machines, it is allowed to fasten their individual components (automatic control system boards, markers, limit rods, connecting accessories, brackets, etc.) subject to observation of all the guidelines of the Operating Manual.

5. ATTACHED: to be fastened by fixing the assembly units (usually connecting frame) from the complete set of the machine to the mounting holes of the tractor. The joints of the mounted attachment roads fixed at the top position against spontaneous lowering can serve as connecting accessories; in this case, the required position of the machine relatively to the bearing area may be achieved by extending the braces or attaching the special braces from the complete set of the machine. The weight of the attached technical facility is perceived completely by the tractor.

The equipment of this type includes the attached front and grab loaders. It is allowed to use the holes of the semiframe and rear-axle tube for fastening the auxiliary components (tension buckles, brackets, markers and hitches) included in the agricultural machines aggregated by means of three-point mounted attachments and traction hitch mechanisms of the tractor without special permit.

Selsnab LLC, Masyukovschina 2v, Minsk, Republic of Belarus, Fax: +375 17 509-60-46, +375 17 509-64-51;phone for receiving applications.: +375 29 610 20 37 ,
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