The forestry industry, like any other, has its own characteristics. In particular, for the full implementation of work related to the loading, unloading and transportation of wood, special equipment is required that is adapted to perform these operations. One of such universal machines is the TT-4M skidder , the features of which will be discussed 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 the TT-4M is the export of large and medium-sized wood to the warehouse from the forest belt, as well as loading it onto platforms or trains in the form of large packages.
Tractor production took place in Altai. In the series, this car went in 1969 already far from us. As a basis for the machine, the rather popular tractor TDT-75 served. At the same time, a modernization was carried out, which allowed the use of newer parts, which significantly increased productivity.
Technical details
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:
- Engine power - 95.5 kW.
- The specific fuel consumption rate is 235 g / kWh.
- Movement speed - 0.634 –2.284 m / s.
- Bollard pull - 116.1 kN.
- The clearance between the machine and the road surface is 537 mm.
- The maximum angle of elevation that the tractor overcomes is 25 degrees.
- The maximum height of overcome obstacles is 0.6 m.
- The depth indicator of ford overcoming is 0.8 m.
- The average ground pressure of a non-refueling machine is 38 kPa.
- The height of the tractor is 2957 mm.
- Width - 2700 mm.
- Length –6070 mm.
- Weight - 14400 kg.
- The maximum load rating is 68.7 kN.
- The maximum weight of the trawl packet is 15,000 kg.
- Winch pull (maximum) - 112.3 kN.
Structural elements
TT-4M is equipped with a double cabin with seats, which are located to the left of the engine. At the same time, the tractor driver feels quite comfortable at the workplace, since the cab has openable doors and windows, and can also be heated. In addition, glass cleaners and a fan are available. The driver's seat, equipped with hydraulic shock absorbers, is easily adjustable in the horizontal plane. In the cabin there is a place for a container with drinking water and a first aid kit. In stock a peak for protection against sunshine. A well-thought-out lighting system that allows the tractor to work even at night deserves special attention.
The engine of the machine, in addition to impressive power, also has optimal capabilities for working even in harsh climatic conditions, and therefore tractors are often used in the northern regions of Russia and Siberia.
The bottom of the machine was also improved and was subjected to the application of a protective layer. This innovation 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-sided winch, with a pulling force of 122.3 kN. A well-thought-out arrangement makes it possible to skid wood as well as load it as conveniently as possible. 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. There are mechanisms nearby that allow the operator to operate the radiator curtains. At the rear of the cab is a lever that activates, if necessary, the drum of the working winch.
Technical features
Unlike its predecessors, the TT-4M received some reinforcement of the loading units and frame. 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 specialized equipment, the gearboxes located on the frame were equipped with special auxiliary devices. If necessary, you can attach to the tractor uprooter, rear linkage, pusher, bulldozer, drilling rig, cultivator.
The tractor transmission was designed in such a way that it provided four speeds of movement back and eight speeds forward.
A few words about the cost of the machine and spare parts
Spare parts TT-4M can not be called cheap. This is largely due to the fact that the machine has very impressive dimensions and power of its own. It is worth saying that just replacing the motor may well cost 400-600 thousand Russian rubles. The tractor itself, produced before 2000, will cost about 07-1.1 million rubles. The new model has a cost of almost 2.5 million rubles.