Tractor TT-4M: description, features, price

The forestry sector, like any other, has its own characteristics. In particular, for the full execution of works related to the loading, unloading and transport of timber, special equipment is required, adapted to the performance of these operations. One of such universal machines is the skidder TT-4M tractor, the features of which will be considered in this article.

Appointment

This unit is a truly unique and high-quality product of Soviet engineering, which belongs to the fourth class. The main purpose of TT-4M is the removal of large and medium-length wood to the warehouse from the forest belt, as well as loading it onto platforms or railway trains in the form of large packages.

The tractor was produced in Altai. In the series, this car went to a place far from us in 1969. As a basis for the car was a rather popular tractor TDT-75. At the same time, modernization was carried out, which allowed using newer details, which significantly increased the productivity.

Technical data

TT-4M, the technical characteristics of which are given below, is unified with another tractor - T-4A, which, in turn, is used in agriculture.

The skidder has the following parameters:

• The engine output is 95.5 kW.
• The specific fuel consumption rate is 235 g / kWh.
• The speed of movement is 0,634 -2,284 m / s.
• Traction effort - 116,1 kN.
• The clearance between the machine and the road surface is 537 mm.
• The maximum lifting angle that the tractor overcomes is 25 degrees.
• The maximum height of obstacles to be overcome is 0.6 m.
• The index of the depth of ford crossing is 0.8 m.
• The average ground pressure of a non-refueled machine is 38 kPa.
• The height of the tractor is 2957 mm.
• The width is 2700 mm.
• The length is -6070 mm.
• Weight - 14,400 kg.
• The maximum indicator of carrying capacity is 68.7 kN.
• The maximum weight of the package is 15 000 kg.
• Tractive effort of the winch (maximum) - 112,3 kN.

Constructive elements

TT-4M is equipped with a double cabin with seats that are located to the left of the engine. At the same time, the driver of the tractor feels comfortable in the workplace, as the cabin has open doors and windows that open open and can be heated. In addition, there are glass cleaners and a fan. The driver's seat equipped with hydraulic shock absorbers can be easily adjusted in a horizontal plane. In the cockpit there is a place for a container with drinking water and first-aid kits. In the presence of a visor for protection from sunlight. Particular attention deserves a well-designed lighting system, which allows the tractor to work even at night.

The engine of the machine, in addition to its impressive capacity, also has the best opportunities for operation even in harsh climatic conditions, and therefore tractors are often used in northern regions of Russia and Siberia.

The bottom of the machine was also improved and subjected to a protective layer. This innovation has made it possible to protect individual parts and components of the tractor from extremely negative abrasive and mechanical wear.

TT-4M was equipped with a loading shield and a double-side winch with a tractive force of 122.3 kN. A well-thought-out arrangement makes it possible to maximize the convenience of skidding of timber, as well as its loading. The maximum permissible load on the shield should not exceed six tons.

On the front wall of the tractor cab there is a shield equipped with devices for performing the required list of operations and quality control over the movement of the machine itself. Nearby there are mechanisms that allow the operator to activate the radiator curtains. At the rear of the cab is a lever, which activates the drum of the working winch if necessary.

Technical features

Unlike its predecessors, the TT-4M got some reinforcement of loading units and frames. For example, the load projected onto the shield did not put pressure on the transmission and other connecting parts due to the presence of sufficiently powerful rear supports. To fix the specialized equipment, the gearboxes of the gearboxes located on the frame were equipped with special auxiliary devices. If necessary, attach to the tractor can be a rootkit, rear hitch, pusher, bulldozer, drilling rig, ripper.

The transmission of the tractor was designed in such a way that it provided it with four speeds of backward movement and eight speeds ahead.

A few words about the cost of the car and spare parts

TT-4M spare parts can not be called cheap. In many respects this is due to the fact that the machine has very impressive own size and power. It is worth mentioning that the motor replacement alone can well cost 400-600 thousand Russian rubles. The very same tractor, produced in the period until 2000, will cost about 07 - 1.1 million rubles. The new model has a cost of almost 2.5 million rubles.