SU1342458A1 - Cutting working member for stump puller - Google Patents

Abstract

The invention relates to forestry machinery. The purpose of the invention is to increase the service life by providing self-sharpening of the cutting edge (RK) and resistance to shock loads. The undercutting tool contains a stand 1 and a flat knife 2 with an RC 4. On the front sides of the stands and the cutting knife there are circular recesses (CU). On the outer side of the pillars and on the typny side of the flat knife, longitudinal grooves (PU) 5 are made. The formative sides of the PU are located perpendicular to the RK with a step multiple of KU. PU shifted from KU half their step. KU and PU afloat -; - lena is hard alloy. The outer sides of the racks wear faster than the front. The base metal between the PU wears out faster. As a result, metal is compressed from beneath. The cropped soil paste with roots also abrades the base metal between CU, the exposed RK. The local distribution of the alloy in the cavities of the material makes it possible to eliminate chipping of the RC. 7 il. (L

Description

The invention relates to forestry machinery engineering, in particular to working bodies of upraisers with a continuous technical process.

The purpose of the invention is to increase the service life of the undercutter of the lifting device by ensuring self-sharpening of the cutting edge and its resistance to shock loads.

Fig, 1 shows the undercutting working body of the lifter, side view; figure 2 is the same, front view; on fig.Z - section aa in figure 2; FIG. 4 is a section BB in FIG. 2; figure 5 is a view In fig 1; FIG. 6 is a view of FIG. 2; figure 7 - type D on fig.Z.

15 that the rounding of the cutting edge 4 does not exceed 0.5–0.8 mm. The local distribution of the alloy in the cavities of the material eliminates chipping of the cutting edges, since they

The pruning tool of the uplifter includes the left upright 1, the flat 2o is always placed on the underlying layer of the knife 2 and the right upright 3. On the frontal base material.

The use of the proposed technical solution will make it possible to increase the service life of the undercutting bracket of the picker 25, as well as to reduce the energy consumption during operation of the lifter, so

In the second part of the racks 1. and 3 and the flat knife 2, the blade with a cutting edge 4 is sharpened at an angle of 21 ± 2 °.

The racks 1 and 3 and the flat knife 2 are interconnected by arcs with a radius of 200 mm, forming a V-shaped bracket between them. Thickness of metal racks

1 and 3 is 25 mm, and a flat knife is 20 mm. On the outer side (as applied to the pillars 1 and 3) and the flat side of the flat knife 2 of the V-shaped clevis, there are recesses 5 with a width of 20 mm, a depth of 0.8 - 1.0 mm, and a length of 60 mm.

The formers 5 are perpendicular to the cutting edge of 4 pillars 1 and 3 and a flat knife 2. On the front sides of the pillars 1 and 3 and a flat knife

2, with a displacement from the cutting edge 4 by 1.0-1.5 mm, circular recesses 6 with a diameter of 50 mm and a depth of 0.8-1.0 mm are placed. Circular recesses

6 with respect to the recesses 5 are offset by 25 mm, i.e. half the pitch of the indentations 6.

In the process of work of the pruning tool of the uplifter, the outer sides of the uprights 1 and 3 would wear out30

35

40

45

50

as the thickness of the cutting edge does not exceed 1 mm.

Claims (1)

Invention Formula The trimming tool of the uplifter, containing the 1st strut and a flat knife with cutting edges located on the front sides of the uprights and the flat knife, is characterized in that, in order to increase the service life by providing self-sharpening of the cutting edge and its resistance to impact loads, -; the central sides of the pillars and the flat knife have circular grooves, and on the outer side of the racks and on the dark side of the flat knife, longitudinal grooves are formed, the sides of which are located perpendicular to the cutting edge with A, multiple of the circular grooves, and offset from the latter by half their pitch, with circular and longitudinal grooves directed by the hard metal. faster than facial. The base metal is located between the depressions 5, the hard alloy directional mold, wears out faster as a result This metal is compressed from under the depressions 6, sharpening the cutting edge 4. The cut soil layer with the roots, although to a lesser extent, also wears the base metal between the depressions 6, exposing the cutting edge 4. The presence of depressions 5 and 6 on the front and back the surfaces of the racks 1 and 3 and the flat knife 2 leads to that the rounding of the cutting edge 4 does not exceed 0.5-0.8 mm. The local distribution of the alloy in the cavities of the material eliminates chipping of the cutting edges, since they always placed on the underlying layer of the base material. thirty 35 40 45 50 as the thickness of the cutting edge does not exceed 1 mm. Invention Formula The trimming tool of the uplifter, containing the 1st strut and a flat knife with cutting edges located on the front sides of the uprights and the flat knife, is characterized in that, in order to increase the service life by providing self-sharpening of the cutting edge and its resistance to impact loads, -; the central sides of the pillars and the flat knife have circular grooves, and on the outer side of the racks and on the dark side of the flat knife, longitudinal grooves are formed, the sides of which are located perpendicular to the cutting edge with A, multiple of the circular grooves, and offset from the latter by half their pitch, with circular and longitudinal grooves directed by the hard metal. bb Fig.Z R five FIG. the form .four-/ FIG. 6 Vidl b - - Fig Editor P.Tereshi Compiled by TDrugova Tehred M. Didyk Proofreader S. Shekmar Order 4537/2 Circulation 627 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab, 4/5 Production and printing company, Uzhgorod, st. Project, 4