EA000647B1 - Working wheel of rotary rake with fingers - Google Patents

Abstract

A working wheel of rotary rake with fingers comprising a hub connected to a rim with spokes and spring fingers passing through holes in the rim, their free ends extending downwards and inner ends are fastened, characterized in that said inner ends of said fingers are pivotally connected to the ends of rocking arms fixed on said spokes enabling the fingers to move in radial direction and to rock arms in the wheel plane.

Description

The invention relates to the field of agricultural engineering.

In the known designs of impellers, including the rim, hub and spring fingers in the form of studs, the outer bent ends of which pass through the through holes of the rim, the inner ends are fastened with buckles on the bend of the spokes fixedly in the radial direction. (DVR patent 1022040 dated 3.09.59)

Also known are the impellers selected as a prototype, in which for fastening the inner ends of the fingers in the disks welded between the spokes, cuts are made along its radius and, as the fingers wear out (I once a season) at the point of contact with the rim, change the place of attachment of the inner ends of the fingers. (ed. St. USSR № 556746 from 01.02.74)

The disadvantage of the above wheels is insufficient width. This disadvantage is due to the fact that the inner ends of the fingers are rigidly fixed and do not move in the radial direction, and no more than 6 fingers (1/3 of the wheel diameter) participate in the process of combing the material, depending on the height of the stubble. The distance between the axles and the planes of the wheels, providing overlapping and raking quality, is determined from the condition that the exit point from the stubble of the thumb of the first wheel should be the entry point of the finger in the stubble of the second wheel.

The purpose of the invention is to increase the width of the impeller and as a result: reducing the number of impellers in the rake.

This goal is achieved by the fact that the inner ends of the working fingers are hinged at the ends of the rocker arms mounted on the spokes, with the possibility of displacement, in the process of the wheel, fingers in the radial direction and swing of the rocker arms in the plane of the wheel.

Comparative analysis with the prototype allows us to conclude that the claimed wheel is different in that the inner ends of the working fingers are hinged at the ends of the rockers mounted on the spokes, with the possibility of displacement, during operation of the wheel, of the fingers in the radial direction and swing of the rocker arms in the wheel plane.

Thus, the claimed technical solution meets the criterion of Novelty.

Analysis of the known technical solutions (analogues) allows us to conclude that there are no signs in them that are similar to the salient features of the proposed wheel, and to recognize the proposed technical solution meets the criterion Significant differences.

The invention is illustrated by drawings, where in FIG. 1 and 5 show the impeller; in fig. 2 - section aa of FIG. in fig. 3 section bb FIG. one; in fig. 4 shows a section bb of FIG. 1, in FIG. 6 - part of the needle with a hole; Fig.7 rocker with grooves.

The impeller includes the hub 1, the spokes 2 with drop-shaped holes 3 and the yoke 4 with slots 5 and 6. The rim 7 is fixed to the needles with through holes 8 in which the bent ends of the outer fingers 9 and the inner 10 are missed, the inner ends of the fingers are inserted into the grooves 6 of the rocker arm 4 and secured against falling out of the brackets 11.

In the holes 3 of the spokes 2, the rocker arm 4 is installed, the grooves 5 of which limit their swing and movement, and the inner ends of the fingers inserted into the grooves 6 prevent the rocker arm from turning around the longitudinal axis.

The wheel assembly is as follows.

The beam 4 is inserted into the hole 3 of the needle 2, aligning the jumper 5 of the rocker arm 4 with the hole 3 of the needle 2, rotate the beam at an angle of 90 °, fingers 9 and 10 with free ends pass through the holes 8 of the rim 7, and the inner ends are inserted into the slots 6 of the rocker arm 4, brackets 11 are inserted into the formed hole and bend them.

The wheel works as follows: from the weight of the wheel, the finger in contact with the soil and the end of the link on which it is fixed moves to the center of the wheel, and the second end of the link moves with fixed fingers from the center of the wheel to the stubble.

In addition, when turning the wheel, the group of fingers that have already been extended first come into contact with the stubble.

This ensures an increase in the width of the grip wheel due to the inclusion in the work of the extended fingers.

Conducted state tests of Vladimir IIA (protocol No. 03-20-96) confirmed the effectiveness of the proposed technical solution, reducing the number of impellers from 13 to 11 on the GVK-6.0A rake did not affect the quality of the technological process (the loss was 0.54% with permissible 2%).

Claims (1)

CLAIM Impeller wheel-finger rake, comprising a hub and a rim with holes, connected by spokes, and spring fingers, free bent ends passing through the holes of the rim, and the inner ends are fixed, characterized in that the inner ends of the working fingers are hinged on the ends of the rocker arms mounted on knitting needles, with the ability to move the fingers in the radial direction and swing the rocker arms in the plane of the wheel.