ML-135 --- a new development of CNSIME
Tree Length Logging System circa 1972
(Система машин заготовки хлыстов)
| chain saw feller-buncher bunch skidder to drag landing forwarder delimber machine limb slasher machine length to stack pile truck rut skidding trail | цепная пила валочно-пакетирующая машина пакет, пачка (деревьев, хлыстов) трелевочник подтаскивать, тащить склад, погрузочная площадка, лесопогрузочный пункт форвардер (самозагружающийся трактор для трелевки лесоматериалов в погруженном положении) сучкорезка сучок, ветка машина для раскряжевки хлыст штабелевать, складывать штабелем штабель грузовик колея, борозда трелевочный волок |
Around 1972, the tree length logging system was introduced and was a major advancement over the chain saw logging system. It uses several major pieces of equipment, needing only one labor r for each machine. One machine is a feller-buncher, which cuts trees at ground level and places them in bunches.
Another machine is a Skidder which drags the bunches to the landing. In most cases, two were needed to keep up with the feller-buncher. Alternatively, a forwarder machine (photo) could be used. At the landing, a delimber machine removes limbs from the trees. A slasher machine cuts the trees to appropriate lengths and stacks the logs in piles for truck transport.
The tree length system can be very productive, but only if the labourers are there for each machine, each machine was working, and the weather was not severe. If a labourer was missing or a machine down, production was brought to a halt. If the weather was severe, the different machines would cause ruts in the ground making it hard for the machines to move around. This was particularly problematic since the tree length logging system requires a network of roads, skidding trails, and landings.
Task 1 Назовите виды Лесных машин, перечисленных в этом тексте.
Task 2 Укажите функции Лесных машин.
Feller buncher
(Валочно-пакетирующая машина)
ML-135 --- a new development of CNSIME
| to attend perfection capacity manipulator reach ground clearance ground pressure shear-and-grapple device good resource propulsion turntable clearance positioning lattice fatigue conoluits (зд.) | заботиться совершенствование мощность вылет стрелы манипулятора дорожный просвет давление на грунт захватно-срезающее устройство повышенный ресурс сила тяги, движущая сила поворотный стол, поворотная платформа расчистка, просека, вырубка установка решётка усталость насосы |
CNSIME traditionally attends to creation and perfection of the feller-bunching machines. The machine, which is carrying out the most dangerous and labor-intensive operation on cutting area, is worthy of it. All process of timber cuttings depends on its efficiency and an opportunity to realize the technical parameters.
CNSIME has developed and produced the first pre-production model of this machine. The main parameters are following:
b Capacity, h.p. – 225
b Productivity, trees / hour – 170
b Maximal diameter of the tree cut, sm – 56
b Maximal manipulator’ reach, m – 8…9,4
b Ground clearance under the chassis, mm – 600
b Ground pressure, kg/sm2 – 0,39
Dynamical, manipulating machine with a low ground pressure is focused on the consumers working with the trees of not large diameter. An opportunity to collect in shear-and-grapple device up to five trees of 20 sm in diameter provides the machine’ productivity up to 170 trees/h.
Powerful diesel AMZ-238 with a good resource, blocked with pump group provides good dynamics and propulsion performance characteristics of the machine. The integration of the turntable allows carrying out rotation with the working equipment and cutting trees in a corridor “on clearance” 5 m. The machine is equipped with one of the best in the world proportional electrohydraulic control system produced by “Danfoss”. Softness and accuracy of the positioning do not demand significant efforts of the operator.
The comfortable, well-protected cabin with the increased visibility and without “traditional” lattices reduces of the operator. The modern supervising and diagnostic equipment blocked in a monoblock with display of the current data to the liquid – crystalline display provides the operator with the necessary information.
The hydrosystem of the machine is produced with application of conduits for ultrahigh pressure.
The modern technologies of mechanical engineering provide good quality of the machine.
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