SU905082A1

SU905082A1 - Knife head for working trees

Info

Publication number: SU905082A1
Application number: SU802961584A
Authority: SU
Inventors: Виктор Федорович Минчик; Павел Григорьевич Яковлев; Евгений Гаврилович Митрофанов; Аркадий Дмитриевич Шубин; Александр Юрьевич Свиридников; Владимир Константинович Трофимов
Original assignee: Петрозаводский Станкостроительный Завод; Петрозаводский государственный университет им.О.В.Куусинена
Priority date: 1980-07-21
Filing date: 1980-07-21
Publication date: 1982-02-15

Description

(54) НОЖЕВАЯ ГОЛОВКА ДЛЯ ОБРАБОТКИ ДЕРЕВЬЕВ(54) KNIFE HEAD FOR TREATMENT OF TREES

Изобретение относитс к станкам дл обработки деревьев и может быть использовано в лесной и деревообрабатывающей промышленности.The invention relates to tree processing machines and can be used in the forest and woodworking industry.

Известны ножевые головки дл обработки деревьев, имеющие корпус и расположенные по его периметру режущие инструменты 1.Knife heads for processing trees are known, having a body and cutting tools 1 located along its perimeter.

Однако такие головки имеют низкую производительность ввиду того, что каждое дерево необходимо протаскивать полностью вместе с бессучковой зоной.However, such heads have low productivity due to the fact that each tree must be dragged completely together with a dull-free zone.

Наиболее близкой к изобретению вл етс ножева головка дл обработЙ деревьев , включающа корпус, состо щий из неподвижной части и шарнирно соединенной с ней подвижной части, режущие элементы, расположенные по периметру корпуса и выполненные в виде двуплечих рычагов, а также привод поворота подвижной части корпуса и режущих элементов 2.Closest to the invention is a tree head for woodworking, comprising a body consisting of a fixed part and a movable part hingedly connected to it, cutting elements located along the perimeter of the body and made in the form of double-arm levers, as well as driving the movable part of the body and cutting elements 2.

Недостатки этой ножевой головки - сложность привода и больща продолжительность времени раскрыти и закрыти ножевой головки. Это обусловлено наличием двух силовых цилиндров поворота подвижной части корпуса и режущих элементов .The disadvantages of this knife head are the complexity of the drive and the longer the time for opening and closing the knife head. This is due to the presence of two power cylinders turning the movable part of the body and the cutting elements.

Цель изобретени - упрощение привода и сокращение времени раскрыти и закрыти ножевой головки.The purpose of the invention is to simplify the drive and shorten the opening and closing times of the cutter head.

Цель достигаетс тем, что неподвижна часть корпуса имеет направл ющие в виде двух сопр женных дугообразных пазов разного радиуса кривизны, а конец штока силового цилиндра снабжен пальцем, который расположен в направл ющих.The goal is achieved by the fact that the fixed part of the body has guides in the form of two mating arcuate grooves of different radius of curvature, and the end of the power cylinder rod is provided with a finger, which is located in the guides.

На фиг. 1 схематически показана описываема ножева головка, рабочее положение; , на фиг. 2 - то же, в момент окончани раскрыти режущих элементов и начала раскрыти подвижной части; на фиг. 3 - то же, в открытом состо нии.FIG. 1 shows schematically the knife head described, the operating position; in FIG. 2 is the same at the time of the end of the opening of the cutting elements and the beginning of the opening of the moving part; in fig. 3 - the same, in the open state.

Claims

The knife head includes a body that has a fixed part 1 and a movable part 3 connected to it with the help of a 2 2Q hinge. On both parts 1 and 3 of the body along its perimeter are cutting elements 4, made in the form of two shoulders. The free arms of the levers of the cutting elements 4 are interconnected by means of 5. To open and close the movable part 3 of the knife head and the cutting elements 4 there is a power cylinder 6. The stationary part 1 of the body of the knife head is shaped with figured guides 7 in the form of two conjugate arc-shaped grooves 8 and 9 of different radius of curvature. The end of the stem 10 of the power cylinder 6 is mounted in guides with the ability to move in them. Knife head works as follows. With the help of the cylinder 6, the movable part 3 of the body together with the cutting elements 4 are opened. In doing so, the end of the stem 10 first moves along the arcuate groove 8, opening the cutting elements 4, and then along the arcuate slot 9, revealing the movable part 3 of the housing. A tree at the beginning of the knot zone is laid in the knife head and the movable part 3 of the body is closed, pressing the cutting elements 4 against the surface of the tree. In this case, the cutting elements 4 are arranged evenly around the entire circumference of the treated wood. When the knife head is closed, the end of the stem 10 moves in the opposite direction along the guides 7. Turning on the tree pulling drive (not shown), cutting the branch from the cutting elements 4. After processing the wood in the knife head lay the following. Due to the displacement of the ram of the ram in the guides, the opening and closing of the cutting elements and the blade head is accomplished by one movement of one ram. This greatly simplifies the drive to open and close the knife head and increases its productivity by reducing the time to open and close the head. The invention includes a tree cutter head, which includes fixed and movable parts of the body that are hinged together, made in the form of double-arm levers, cutting elements and a power cylinder for turning the movable part of the body and cutting elements, which is -g, which, with the aim simplify the drive and shorten the time of opening and closing the knife head, the fixed part of the body has guides in the form of two mating arcuate grooves of different radius of curvature, and the end of the ram of the power cylinder is equipped with finger, which is located in the guides. Sources of information taken into account in the examination 1.Patent of Germany No. 1287789, cl. 38 i 1, 1954.

2. USSR author's certificate number 564153, cl. In 27 L 1/00, 1975 (prototype).