RU2708804C1 - Mower pin for reap machine cutting device - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to the agriculture. Mower pin of reaping machine cutting device includes upper double part of pins, separate web and lower double part of pins, which are connected to each other and form assembly of double mower pins, wherein upper double part of pins has outer outline with streamlined surface and pointed faces on butts of mowing pins, and separate bridge has U-shape, on transverse part of which there is a stiffening rib, at that longitudinal parts are made flat, as well has lower double part of pins with external surface of streamlined shape, wherein overlapping between pins is located at distance 100…120 mm from pin toes and has an ellipse-like section with major axis 8…12 mm.

EFFECT: invention makes it possible to produce a design of mowing pins, which well divides a dense closed grass stand, consisting of various plants.

1 cl, 8 dwg

Description

The invention relates to the field of agricultural engineering, in particular to cutting machines for reaping machines.

Known mowing fingers (SU No. 209889 from 01/26/1968, SU No. 268061 from 04/02/1970, SU No. 1323012 from 07/15/1987) where the supply of stems to the active cutting zone to the segment blades is provided for a homogeneous stem mass with a certain moisture content, as a rule these are stems of cultivated plants. The use of these devices of mowing fingers for mowing a heterogeneous mower cover with high humidity will reduce the productivity and quality of work when mowing. These shortcomings of the constructive forms of the mowing fingers will not provide high-quality cutting of heterogeneous plant mass. And also there will be a hang of plant mass on the fingers of the mower.

Known designs of mowing fingers (DE 19734337 from 06/04/1998) where there is a beam with mowing fingers installed on it. The disadvantages of this design is the very shape of the used mowing fingers, which does not allow the separation of dense grass in front of the blade segments, which reduces the quality of the work performed. A device is known (US 2002/0035827 dated 08/03/2002) where step cutting is proposed, in which the mowing fingers also do not provide a high-quality separation of the dense grass stand. Known high-speed cutting system (US No. 6510681 from 07.28.2003) where cast mowing fingers mounted on a beam are used, and the elongated shape of the mowing fingers also does not provide high-quality work when mowing a dense grass stand.

It is known from the prior art (RU No. 2363136 publ. 08/10/2009; RU No. 2429595 publ. 09/27/2011; RU No. 2458499 publ. 08/20/2012) that mower fingers are used that do not provide low separation of dense grass for subsequent cutting by segments cutting apparatus.

A similar technical solution is known from DE patent No. 10123248 publ. 09/19/2002, in which a stamping finger is described as part of a cutting body with a stem lifter, having an upper and lower opposing plate and an arm connected to each other by welding, while there is a rectangular groove between the lower and upper opposing plates for the passage of the cutting segments of the mower knife, and coaxial holes are made on the upper opposing plate and on the bracket, while the pin is attached to the bar using two bolts with nuts.

The closest technical solution chosen as a prototype is the mowing finger assembly (patent RU No. 2512279 publ. 04/10/2014), where the mowing finger of the cutting apparatus of the reaping machine includes an upper double part, a separate jumper and a lower double part of the fingers that are connected between themselves and form a node of double mowing fingers. The disadvantages of such a design of the mower fingers are the impossibility of low separation and subsequent cutting of a closed grass stand having numerous interweaving of already dying plant stems. The latter is exacerbated when the humidity of the grass stand is increased.

The proposed technical solution allows to obtain a new technical effect associated with the possibility of a new design of the mowing fingers to well separate the dense closed grass stand, consisting of a variety of plants.

The technical effect is achieved by the fact that the upper double part of the fingers has an outer contour with a streamlined surface and pointed edges on the toes of the fingers. A separate jumper, in this case, has a U-shape, on the transverse part of which a stiffener is made, and its longitudinal parts are made flat. The lower double part of the fingers has an outer contour with a streamlined surface, while the overlap between the fingers is located at a distance of 100 ... 120 mm from the toe of the fingers and has a cross section in the form of an ellipse with a larger axis of 8 ... 12 mm. When connecting the upper double and lower double parts of the mowing fingers with each other and a separate jumper, a common pointed edge of the toes of the fingers in the longitudinally vertical plane with an edge thickness of at least 1 ... 1.5 mm and a round shape in the longitudinally vertical plane with a radius of less than 20 ... 28 mm.

In FIG. 1 side view shows the node of the double mowing fingers, where 1 is the upper double part of the fingers, 2 is a U-shaped separate jumper, 3 is the lower double part of the fingers. In FIG. 2 top view of the same position. In FIG. Figures 3 and 4 show separately the upper double part of the fingers, where 4 is the outer contour with a streamlined surface, which has 5 - pointed edges on the socks, mower fingers - 6. There is a 7 - oval arc, with a space of 8 to accommodate the cutting apparatus, 9 - stiffeners, 10 - mounting surface, with 11 - hole for mounting. In FIG. 5 and 6 show a 2 - U-shaped separate jumper, which consists of 12 - longitudinal flat parts and 13 - the transverse part with a cross section in the shape of an ellipse - 14.

In FIG. 7 and 8 are a side view and a top view of the lower double part of the fingers, where 15 - the outer contour with a streamlined surface has 16 - pointed edges on the toes of the mowing fingers - 17, there is an 18 - cavity ligament, 19 - an oval arch with 20 - space for the cutting device , 21 - stiffeners, 22 - mounting surface with 23 - holes for mounting.

When the harvesting machine is operating, the mowing fingers 17 provide a good low separation of the closed grass stand with numerous intertwined dying plant stems, while the pointed edges 5 on the socks of the mowing fingers 6, the upper double part of the fingers 1 and the pointed edges 16 on the socks of the mowing fingers 17 of the lower double part of the fingers 3 form a common pointed edge 24, providing separation of the heterogeneity of the grass structure into narrow strips, cutting with sliding along a common pointed edge 24 or breaking shadowy stems of plants. The stiffening ribs 9 of the upper double part of the fingers 1 and the stiffening ribs 21 of the lower double part of the fingers 3 form external contours with a streamlined surface 4 and 15, providing unimpeded movement of the separated grass stand at any moisture content and degree of entanglement to the cutting apparatus of the reaping machine, which is located in spaces 8 and 20 between the oval arcs 7 and 19. The transverse part 13 of the U-shaped separate jumper 2 is located at a sufficient distance from the common pointed edge 24 is made in the form of an ellipse 14, providing Vaeth unimpeded bending and moving the cut mass of plants.

Claims (2)

1. The mowing finger of the cutting apparatus of the reaper, including the upper double part of the fingers, a separate jumper and the lower double part of the fingers, which are interconnected and form a node of the double mowing fingers, characterized in that the upper double part of the fingers has an outer contour with a streamlined surface and pointed faces on the toes of the mowing fingers, and a separate jumper has a U-shape, on the transverse part of which a stiffener is made, while the longitudinal parts are made flat, also has the lower double part of the fingers with the outer surface, made streamlined, and the overlap between the fingers is located at a distance of 100 ... 120 mm from the toes of the fingers and has a cross section in the form of an ellipse with a larger axis of 8 ... 12 mm. 2. The mowing finger according to claim 1, characterized in that when connecting the upper double and lower double parts of the mowing fingers to each other and a separate jumper, a common pointed edge of the toes of the fingers in a longitudinally vertical plane with an edge thickness of not more than 1 ... 1.5 mm is provided and rounded in a longitudinally vertical plane with a radius of at least 20 ... 28 mm.

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