SU1250199A2 - Arrangement for thrashing standing farm crops - Google Patents

Description

The invention relates to agricultural machinery, namely, devices for threshing agricultural crops at the root, mainly rice,

The purpose of the invention is to reduce the loss of grain yield and improve the quality of threshing.

Fig, 1 shows the proposed device, side view in section; in fig. 2 - the same, section A-A in FIG. . The device for threshing agricultural crops at the root consists of enclosing the drive threshing drum 2 in the casing 1, on the outer surface of which threshing working bodies are located in the form of pointed flat teeth 3. The top dividers 3 have annular dividers 4, eccentric offset relative to each other and the axis of rotation of the drum 2 (in Fig. 1, the center of each adjacent ring of the divider 4 is offset in the plane of rotation by 120). In this case, the teeth 3 mounted along the drum core 2 are arranged next to the ledges and form the outer 5 and inner 6 threshing gaps. The outer threshing gap 5 is larger than the internal clearance 6.

The device works as follows.

The threshing drum 2, with its rotation and movement across the field, with its annular dividers 4 acts on the stems of the harvested crop. Under the action of the resulting friction forces, the stems are entrained in the direction of movement of the dividers 4, enter the space between the dividers 4 and are affected by the threshing teeth 3, the edges of the teeth 3, strike the ears of the panicles, destroy the link - the stem and the free colossus; thrown to the front

the casing shield 1, along which the free spike is diverted to the grain receiver (not shown).

As the device moves along

. The threshing stems go away, threshed under the drum 2 and out of it.

The faster the threshing of the stems from the moment of their interaction

with dividers 4, the greater the likelihood of severed spikelets on the front shield of casing 1 and their entry into the grain container.

If the threshing process occurs

at the bottom of the drum 2, the torn off spikelets fly out from under the shield of the casing 1 on the field.

Under the action of) the vibration of the peripheral edge of the ring dividers 4

(radial vibration of dividers 4 is due to their eccentric displacement relative to the axis of rotation of the drum 2) they are accelerated into the mass of stems and the stems penetrate into the threshing gaps between teeth 3. First, the stems enter the widest external threshing gap 5, which is the preliminary partial

threshing panicles. Due to the slight narrowing of the flow of the stems in the gap 5, they are not pinched between adjacent teeth 3, which eliminates the detachment of the panicles and their parts from the stem.

In addition, during the pre-threshing process, the grain mass decreases and the stems are flattened, which has a positive effect on the insertion of the stems into subsequent narrower ones.

internal threshing gaps 6, in which the final domolot occurs, i.e. in this case, a two-step process of threshing of standing plants is taking place.

With an appropriate arrangement of the ring dividers 4, three more possible threshing process is possible.

Compiled by G. Borisov Editor A. Revin Tekhred O. Sopko Proofreader M. Sharoshi

Order 4352/2 Circulation 679 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

Phi1,2

Claims (1)

DEVICE FOR THRESHING AGRICULTURAL CROPS AT THE ROOT by ed. St. No. 628843, characterized in that, in order to reduce losses of grain yield and improve the quality of threshing, adjacent dividers are eccentric relative to each other and to the axis of rotation of the drum. with CO> TO)