SU923441A1 - Thrashing apparatus - Google Patents

Description

(5) MOL (GGILNAYA DEVICE

I

The invention relates to agricultural machinery, in particular, to threshing devices and can be used in rice and grain harvesters.

A threshing device is known, including a deck composed of hinged-fixed sections, which oscillate under the action of the scourges of drum 1.

 The closest in technical essence is a threshing device containing a deck hinged under the drum and making forced harmschic vibrations under the action of an eccentric drive 21.

The disadvantages of the known devices are the low cleaning efficiency of the deck cells from sticking and the complexity of the design.

The purpose of the invention is to increase the cleaning efficiency of the deck by imparting a shock pulse to it.

This goal is achieved by the fact that the drum and the deck are equipped with cams located in the same radial plane and installed with the possibility of interaction, and the deck is equipped with rubber shock absorbers placed at the place of its connection with the rods.

The drawing schematically shows a threshing device.

The threshing drum 1 and deck 2 are provided with impact cams 3 and, the amount of overlap of which during the collision is determined by the necessary

15 value acceleration shaking deck. Deck 2 is installed through adjustment bolts on rubber shock absorbers 5 and 6 placed on the thrust bars 7 and 8. The deck is moved in the vertical direction by the adjustment mechanism 9.

Claims (2)

Threshing device operates as follows. 39 In the threshing process, if there are normal threshing gaps between the deck and the drum, the cams and 4 do not collide and the deck remains stationary. When blocking deck cells with a threshing mass, the combiner moves the concave lever to the extreme position and fixes it. At the same time, by means of the adjustment mechanism, the deck 9 is shifted upward to a position where the overlap of the impact cams 3 and 4 has a predetermined value. The threshing drum 1 rotating at high speed with its cams 3 strikes the cams k of deck 2. The deck receives a shock impulse and, with an acceleration of 10–20 g, oscillates on rubber dampers until the next impact of the cams. Due to the shock pulse, the adhered mass separates from the deck and is carried along with the threshed mass to the straw walker. After cleaning the deck, the combiner lowers the deck to the normal position at which threshing continues. The proposed threshing device design provides effective cleaning of the deck from sticking, as it allows to get npft collisions of cams. Acceleration is about 10-20 days. The design is simple to manufacture and operation due to the absence of a special drive for the vibration of the deck. The use of shock pulses to excite deck vibrations eliminates the possibility of resonance in the system, and rubber dampers limit the dynamic loads on the frame of the combine and vibration of the cab. The stiffness of the shock absorbers is chosen so that when the deck is oscillated, the change in the threshing gap is insignificant. The use of the device will significantly reduce the loss of grain and reduce the downtime of the combine for cleaning the deck, especially when threshing VL, as well as the stalk mass. Claims of the invention A threshing device comprising a drum and a deck suspended on the threshing mechanism of the threshing gap, characterized in that, in order to increase the cleaning efficiency of the deck by imparting a shock pulse, the drum and the deck are provided with cams located in a perpendicular axis of the drum plane The deck is equipped with rubber shock absorbers, which are located between the deck and the drags. Sources of information taken into account in the examination 1. USSR author's certificate number Cl. A 01 F 12/26, 19/8. 2. USSR author's certificate number 521866, cl. A. 01 F 12/18, 197 (prototype),