SU1423043A1 - Cotton picker - Google Patents

Abstract

The invention relates to agricultural machinery, in particular cotton harvesting machines, and reduces the metal intensity by rational redistribution of the process load between the front and rear pairs of spindle drums and increasing the efficiency of work. A cotton harvester consists of a front 1 and a rear 2 pairs of spindle drums, symmetrically set about the axis of a row of cotton. On the front spindle drums, the width of the tape with teeth wound on the rod is 1.1–1.5 times larger than on the rear pair. After passing the front pair 1 of the spindle drums, the remaining cotton boxes meet the rear pair 2 of the spindle drums that the kx collect. 3 il. s g SL

Description

FIELD OF THE INVENTION The invention relates to agricultural machinery and can be used in cotton harvesting machines.

The purpose of the invention is to reduce the metal capacity of the cotton-picking machine by means of radial redistribution of the technological load between the front and rear pairs of spindle drums and the efficiency of the work.

Figure 1 schematically shows a cotton picker, top view; FIG. 2 is a view A of FIG. 1; on fig.Z - view B on fig.I.

The cotton harvester consists of a front I and a rear 2 pairs of spindle drums symmetrically arranged with respect to the axis of a row of cotton 3. Spindle drums 1 have composite spindles 4 with a larger width of the gripping element than on the spindle x 4 and the back pair of drums 2. At the same time the ratio of the tape width of the gripping element of the spindles 4 to the spindle m 5 is in the range of 1.1-1.5.

In operation, the counter-rotating front spindle drums I contact with cotton bolls and collect up to 70% of the total yield. The length of the cotton lobules slices wound on the front spindles of the 4 drums is 100-130 mm. The diameter of the lobules is 22 mm. After the passage of the front pairs of drums 1, the remaining cotton sticks with torn segments meet with spindles 5 with a smaller width of the tape of the exciting elements of the rear pairs of drums 2, and the length of the torn segments is 1.1-1.5 times less than the normally stretched lobules and the diameter of the ball-shaped stud is within 15-20 mm,

To increase the probability of meeting the teeth of the spindle of the rear drum with broken lobules and cotton pickers, the width of the gripping element tape must be reduced, and to ensure equal strength with the gripping elements of the front pair of drums, the width of the gripping element of the spindles of the rear pair of drums must be increased.

The tape width of the gripping element is determined from the expression

0

five

0

five

0

five

:

M.5

1 - G (1) L sina - b ,, D (G),

where 1 is the width of the exciting tape

element along the edge: teeth; - the relative elongation of the lobule, equal on the basis of experiments 0.5-1.1; the initial length of the lobule; the winding angle of the turns of the gripping element of the composite spindle, o (-7 the gap between the loops of the gripping element; D is the diameter of the lobule. For the spindles of the front pair of drums, the width of the tape of the gripping element with the following data: (+) L5 100-130 mm, 0 / - 2, 5 mm; DJ ° 22 mm, corresponding to the value of. „(100-130) sin 12 ° -2.5- -18-24.5 mm.

The first value satisfies the formula (I) with the condition 1 D | j, and the second exceeds the value D and therefore, to maintain the effectiveness of the spindles of the front pair, you must comply with the condition 1 DJ, then you can accept

-1 21 mm. Based on this calculation, the tape width is 1 to 18-21 mm.

The width of the tape for the spindles of the rear pair of drums for the parameters of the cotton slice: (1 +) L 87-118 mm; DJ - 15-20 mm or D-I 16 mm; about

 2

then

22 Li mm.

(87-100) sin 12-2,5 14

Here, the upper limit exceeds the value of D., taking into account the restriction on 1, 1 3 6 m can be taken, then 15 14-16 mm.

Hence, the ratio of the width of the tape of the exciting elements of the front drums to the rear is

- -G - 1 1-1; I ,, - The use of exciting elements of greater width on the front drums will reduce both the number of working turns and the thickness of the tape itself in each turn, this will ensure a decrease in the metal intensity of the drums of the front pair and the apparatus as a whole.

The number of turns when changing the tape width is determined from the ratio

TO

where 1 nt 33-37.

the number of working turns of the gripping element; working spindle length (N

610 mm);

step winding each turn T 1 b.j).

After substituting the values of H and T formula (2) the number of turns

    2 - then at t 16, 5 mm 610

  TeTs-TsTs

A similar analysis of the drum parameters confirms the fact that with an increase in the tape width of the gripping element, the number of turns and the mass of each spindle in the drum, as well as the mass of the apparatus, decrease.

The technical and economic advantage of the proposed technical solution in comparison with the base (prototype) is obvious, since it is aimed at increasing the efficiency of the cotton harvesting machine.

The essence of the invention lies in the fact that, in order to change the metal intensity by rational redistribution of the technological load between the spindle drums, the width

at

T

. five

in sh

the ribbons of the gripping element of the spindles of the front pair of drums are made larger than the rear pair, and the ratio of the width is 1.1-1.5.

Such a technical solution allows increasing the productivity of the cotton picker and reducing its metal intensity.

Claims (1)

Invention Formula A cotton harvester containing two pairs of spindle drums installed vertically and sequentially to form a working slot for the passage of cotton pieces, each drum spindle is made in the form of a rod and a tape wound on its surface with teeth bent in an arc-like shape, characterized by in order to reduce metal consumption Trying to rationally redistribute the technological load between the front and rear pairs of spindle drums and increase the operating efficiency, the width of the wound tape of the front pair of drums is larger than the width of the rear pair, and the ratio of the widths is in the range 1.1-1.5. ffuf / t efrue.Z Fig.z