SU1687086A1 - Tea-leaf harvesing apparatus operating tool - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to agricultural machinery and can be used to harvest tea leaves. The aim of the invention is to increase the efficiency of technological implementation of G 5 6 & fi $ .1 of the tea leaf picking process. Rollers 2 and 3 are successively placed on frame 1 perpendicular to the direction of movement. The front roller 2 is located above the rear roller 3. Each of the rollers 2 and 3 is equipped with L-shaped grippers 6. Each working element of the grippers 6 is located at an obtuse angle to the base and directed in the direction opposite to the suction nozzle. The grippers 6 of the rollers 2 and 3 are arranged with the possibility of interaction of their working elements in the collection zone. The working bodies immersed in the crown of the tea bush rotate the rollers 2 and 3 and clamp the tea leaves with the working elements of the grippers 6 and, with further rotation, tear them off. The harvested leaves are then fed to the tea bin. 6 Il. w Ё О 00 4J О 00 о

Description

FIELD OF THE INVENTION The invention relates to agricultural machinery and can be used to harvest tea leaves.

The purpose of the invention is to increase the efficiency of the tea leaf harvesting process.

Figure 1 shows the working body of the tea-cleaning apparatus, the axes of the rollers are conventionally located in the same horizontal plane, a general view; figure 2 - tea harvester; fig.Z - the same in the process of collecting leaves; 4 shows elastic grippers of L-shaped forms; Fig. 5 is a diagram of the distribution of the gripping contact areas on the surface of the squeezed tea leaf; Fig. 6 is a diagram of the distribution of the tearing forces transmitted by the grippers over the surface of the squeezed tea leaf.

The working body of the tea-harvesting machine contains rollers installed perpendicular to the direction of movement, each of which is made in the form of rollers 2 and 3 successively placed on frame 1, mounted rotatably on axes 4 and 5. In so doing, axis 4 of the front roller

2 is placed on frame 1 above axis 5 of rear roller 3.

In order to capture and detach the leaves from the stem of the flush on the surfaces of rollers 2 and

3 there are elastic L-shaped grippers 6 installed in the radial direction relative to the surface of the rollers 2 and 3 in rows around the circumference of the rollers with the possibility of interaction of their working elements 7 in the collection zone.

The distance between the rows of elastic grippers 6 is approximately equal to the diameter of the stem of the flush (1.9-2.2 mm), and the distance between the rollers 2 and 3 is larger than this size,

In order to increase the contact area of the elastic grippers 6 with the tea leaves, as well as to prevent rupture and perforation of the leaves, their working elements 7 (approximately 0.2-0.3 length) are located at an obtuse angle to the base 8 and are directed to the side, opposite to the suction nozzle 9 mounted on the frame 1 above the rollers 2 and 3 for moving the collected sheet to a hopper (not shown).

The grippers 6 are made of equal length, so that in the zone of their elastic interaction there is a force to clamp the leaves and stems, sufficient for separation of the leaves from the stem and not exceeding the force of destruction of the stem.

The grippers 6 are made of a chemically neutral material that prevents contamination of the tea leaf. The diameters of the rollers 2 and 3 together with the grips 6 are the same and comparable with the width of the collection zone of about 6-8 cm. The half-gap between the axes 4 and 5 of the rollers 2 and 3 is slightly smaller than their diameter, which ensures a continuous elastic contact of the grips 6 in the process of collecting cha. The density and distribution of the grippers 6 on the surface of the rollers 2 and 3 are such that, when they rotate, the flare stem passes relatively freely between the elements 6.

On the frame 1, above the rollers 2 and 3, to prevent losses, the plates are rigidly mounted with plates 10 and 11 with longitudinal grooves for the passage of the grippers of 6 corresponding rollers.

The working body tea-cleaning apparatus works as follows.

Submerged in the crown of the tea bush to collect the upper layer of leaves, the working bodies of the tea-harvesting apparatus are moved

along the trellis. In this case, the rollers 2 and 3 are driven into counter-rotation with equal speed in the directions indicated in FIG. 2 from the drive of the tea-collecting apparatus. China flush under the action of gripping elastic grippers 6 is drawn into the space between rollers 2 and 3 and clamped by working elements 7 of grips 6. Rounded and relatively hard stem of flush due to the flexibility of elastic grippers

6 falls between their rows and is freed from possible clamping due to the geometrical dimensions and the interposition of the rows of grippers 6, as well as rollers 2 and 3. As a result of the clamping force differences

leaves and stems of flush tea leaves, due to their larger than those of the stem, the surface areas clamped by the interacting rows of grippers 6, with further rotation of the rollers 2 and 3, break and fall

then, on plates 10 and 11 and further, under the action of an upward air flow, they are transferred to the bunker of the tea-cleaning apparatus.

45

Claims (1)

Invention Formula The working body of the tea-harvesting apparatus contains rollers installed perpendicular to the direction of movement, in order to increase the efficiency of the technological process of collecting tea, it is equipped with a suction nozzle, the rollers are mounted sequentially in the direction of movement of the apparatus, the front of them is located above back, and each of the rollers is equipped with L-shaped grippers, each working element of which is located at an obtuse angle to the base and is directed to the side opposite to the suction nozzle, with the interaction of their working elements, the grippers of the rollers are located with the possible in the collection zone. x fO FIG. 2 fiez & .. Ј FIG. five & ig.v