RU96108132A - DEVICE FOR FASTENING KNITTED KNIVES KNIVES - Google Patents

Claims (11)

1. A device for attaching a knife (1) of a wood chopper to a rotating disk 4 or a drum of a wood chopper, comprising a fastener (5), a clip (2) of the knife and a spacer (3) of the knife, which are moved relative to each other to support the back surface (b) of the knife ( 1) on the clamp (2) of the knife, characterized in that the clamp (2) of the knife is provided with supporting surfaces (11 and 12), on which the back surface (6) of the knife (1) must be supported by at least two spaced surfaces (11 'and 12'), moreover, the spacer (3) of the knife has a supporting surface (13) acting on the front surface (14) knife (1) with the force acting between the supporting surfaces (11 and 12) of the clamp (2) of the knife to bend the knife (1) between the supporting surfaces (11 and 12) of the clamp of the knife (2) towards the clamp (2) of the knife to create compressive force in an unsupported portion of the front surface (16) of the knife (1).  2. The device according to claim 1, characterized in that the free distance between the supporting surface (13) of the spacer (3) of the knife and the blade (15) of the knife (1) is greater than the distance measured in the direction of the front surface (16) of the knife (1) between the supporting surface (11) of the clamp (2) of the knife near the blade (15) of the knife (1) and the blade (15) of the knife (1).  3. The device according to p. 1 or 2, characterized in that the knife (1) is made in the form of a rotary knife from a material having an essentially flat cross section.  4. The device according to claim 1 or 2, characterized in that the knife (1) is made in the form of a rotary knife made of a material having a slightly Z-shaped cross-section.  5. The device according to claim 4, characterized in that the front surface (16) of the knife (1) consists of the surface of the protruding part (19) of the Z-shaped profile extending from the middle part (18) of the Z-shaped profile.  b. The device according to PP. 4 and 5, characterized in that the knife (1) having a Z-shaped cross section is made and fixed so that the clamping forces of the knife (1) straighten the knife (1) and increase the angle between the protruding part (19), which forms a true knife (1), and the middle part (18).  7. The device according to any one of paragraphs. 4 - 6, characterized in that the knife (1) having a Z-shaped cross section is made and fixed so that the clamping forces of the knife (1) are designed to reduce the angle between the middle part (18) through the support surfaces (26 and 27) knife and the protruding part (28) located inside the device.  8. The device according to claim 1 or 2, characterized in that the knife (1) is provided with a bulge (17) adjacent to the supporting surface (13) of the spacer (3) of the knife on the free front surface (16).  9. The device according to any one of paragraphs. 1 to 8, characterized in that the knife clamp contains an element (2 ') of the body and the clamp (2) of the knife, the spacer (3) of the knife contains the element (3') of the body and the spacer of the knife (3), the clamp (2) of the knife and the spacer (3) the knife, as well as the knife (1) installed between them, are made as an element of the assembly unit, which is a single unit and is designed to be installed between the knife clamp case element (2 ') and the knife strut case element (3') .  10. The device according to claim 9, characterized in that the element of the assembly unit is provided with at least one guide surface (20) for the adjustable installation of the element of the assembly unit between the element (2 ') of the knife clamp housing and the element (3') of the knife strut housing and for applying compressive force to the element of the assembly unit through the mediation of the elements (2 and 3 ') of the housings.  11. The device according to claim 9 or 10, characterized in that the clamp (2) of the knife and the spacer (3) of the knife of the assembly unit element are provided with mutually guide surfaces (29 and 30), and these surfaces guide the spacer (3) of the knife and the clamp ( 2) the knife relative to each other so that when compressing the spacer (3) of the knife and the clamp (2) of the knife of the assembly unit element between the flat surfaces of the elements (3 'and 2') of the strut housing and the clamp of the knife, the supporting surfaces of the clamp (2) of the knife and strut (3) the knife element assembly unit, abutting the knife, create the force required to clamp and the knife and the bending force for the knife.