RU230120U1 - PICK-UP FINGER OF THE COMBINE HARVESTER CONVEYOR PICK-UP - Google Patents

Abstract

The utility model relates to agricultural engineering, namely to devices of a conveyor pick-up of combine harvester windrows. The essence of the utility model is that the pick-up finger of the conveyor pick-up of the combine, made in the form of two rakes with springs connected by a support part, characterized in that each of the rakes is bent mirror-like in its central part at an angle equal to 100-130°, inward, and intended for use on the conveyor pick-up. The technical result of using the utility model is a reduction in grain losses during the pick-up of a windrow by the conveyor pick-up of the combine, arising as a result of its threshing by the fingers of the pick-up.

Description

The utility model relates to agricultural engineering, namely to devices for a conveyor pick-up of combine harvester windrows.

The design of the conveyor pick-up of the Don combine is known [Grain harvesting combines "Don" / Yu.A. Peskov, I.K. Meshcheryakov, Yu.N. Yarmashev et al. - M.: Agropromizdat, 1986. - P. 40]. In the pick-up, the pick-up fingers are made in the form of two rakes with springs and a support part.

The conveyor pick-up has a number of significant disadvantages related to the design of the pick-up fingers, which can lead to crop losses.

The closest in technical essence and achieved result is a spring pick-up finger for a conveyor pick-up of a grain harvester (RU Patent No. 158040 class IPC A01D89/00, 2015), taken as a prototype and consisting of rakes, curved in the central part in the form of annular turns with springs and a support part.

The disadvantage of such a spring pick-up finger is that the finger is technologically difficult to manufacture, and, despite the reduction in losses due to the use of a ring coil, it does not facilitate the complete lifting of the grain mass roll onto the pick-up conveyor and its compaction, as a result of which the ears of corn are torn out of the grain mass roll during lifting, which leads to crop losses.

The problem is that the rakes of the pick-up finger do not facilitate the complete lifting of the swath onto the pick-up conveyor, as a result of which the ears are torn out, as a result of which the grain losses during the pick-up of the swath of grain mass by the pick-up conveyor are not reduced.

The problem is solved by the fact that in the pick-up finger of the combine harvester's conveyor pick-up, made in the form of two rakes with springs connected by a support part, each of the rakes is bent in a mirror image in its central part at an angle of 100-130°, towards the inside.

If the tines are bent closer to the support part, they will impact the ears, thereby threshing the grain, and at the same time the swath will not be combed during lifting, which will lead to clogging of the tines during lifting. If the tines are bent at the ends of the picking part, short stems will fall out of the swath when it is combed by the picking part, since the distance between the tines is very large.

If the angle in the central part of the bending surface is taken to be less than 100°, then the pick-up surfaces in the central part will run into each other, which will lead to the pick-up part becoming clogged with ears of corn.

If the angle in the central part of the bending surface is taken to be more than 130°, then short stems and ears will fall out of the swath when lifting.

The technical result of the claimed utility model is a reduction in the impact load on the ear of ear tearing due to the presence of a bending surface in the central part of the rakes and thereby a reduction in grain losses.

The drawing shows a general view of the pick-up finger of the combine harvester conveyor pick-up.

The design of the pick-up finger of the combine harvester conveyor pick-up consists of two rakes 1 (picking parts) with springs 3, connected by a support part 4. The rakes are curved in a mirror-like manner in their central part at an angle equal to 100-130°.

The picking finger works as follows.

When the combine harvester with a mounted pick-up is moving, the grain mass swath is located in the middle of the pick-up working grip during the pick-up process. Each pick-up finger, fixed on the pick-up conveyor, performs a translational motion with the harvesting machine and a rotational motion with the conveyor. When the grain mass swath interacts with the pick-up finger, its pick-up part 1, consisting of rakes, begins to comb the swath and compact it due to the presence of a bending surface 2, which prevents ears from being pulled out and short stems from falling out of the grain mass swath onto the soil, thereby reducing grain losses. Then the grain mass moves along the conveyor to the reaper auger. Then the pick-up finger is cleared of stems by a stem puller, and the grain mass is fed to the combine harvester thresher.

The proposed design, without worsening the pick-up ability of the finger, allows to reduce the impact load on the stalk and reduce grain losses.

Claims (1)

A pick-up finger of a combine harvester conveyor pick-up, made in the form of two rakes with springs connected by a support part, characterized in that each of the rakes is bent mirror-like in its central part at an angle equal to 100-130°, towards the inside.