RU178644U1 - Soil mill - Google Patents

Abstract

The soil mill refers to agricultural engineering, in particular to rotary tillage machines. The soil mill contains a housing, a gearbox, a rotor with a horizontal axis of rotation, disks with knives mounted on its shaft, while the Maltese mechanism is introduced into the rotor drive, the carrier of which is driven by a chain transmission from the tractor PTO through a gearbox, and the cross is mounted on the rotor shaft together with knives, providing rotation of the rotor with a variable angular velocity equal to zero at the moments of exit of the knives from the soil. 2il.

Description

The utility model relates to agricultural machinery, in particular to rotary tillage machines (soil mills).

Known mounted on the tractor is a soil mill, consisting of a frame, a casing, a rotor with a horizontal shaft on which vertical disks with knives are mounted, and a rotor drive mechanism from the tractor’s PTO, which is a reducer with bevel wheels, cardan and chain gear [1 p. 158]. The rotor rotates at a constant angular speed; while the knives are embedded in the soil and loosen it, separating into lumps.

The closest to the proposed utility model in terms of the set of essential features is the soil type FN-1.4 mounted on a tractor mill [2].

A disadvantage of the known soil mills equipped with a rotor with a horizontal axis of rotation is the high energy intensity due to the rejection of soil lumps by knives.

From the analysis of the existing level of technology revealed that the technical problem in this area, which could not be solved in the presented analogues, is the lack of technical means with low energy consumption. The technical result provided by the utility model is to reduce the energy consumption of the cutter.

The specified result is achieved by the fact that the soil mill contains a housing, a gearbox, a rotor with a horizontal axis of rotation, on the shaft of which there are disks with L-shaped knives mounted on them. At the same time, the Maltese mechanism was introduced into the rotor drive, the carrier of which is driven by a chain transmission from the tractor's PTO through the gearbox, and the cross is mounted on the rotor shaft together with the knives, ensuring the rotation of the rotor with a variable angular velocity equal to zero at the time of exit of the knives from the soil. Thus, energy costs for communicating kinetic energy to soil lumps without changing the quality of loosening of moist soil are reduced.

The proposed IPC A01B 33 device is illustrated by drawings:

FIG. 1. Soil mill (top view);

FIG. 2. Soil mill (side view).

The soil mill contains a housing 1 (partially shown), a gearbox 2 with bevel wheels, a Maltese mechanism consisting of a carrier 3, fingers (tines) 4 and a cross 5 with radial grooves 6, a rotor with a cross 5 and disks 8 s on its shaft 7 mounted on them L-shaped knives 9 (Fig. 1, Fig. 2). Drive carrier 3 is carried out by a chain transmission 10 from the shaft of the gearbox 2 from the tractor PTO (not shown).

The soil mill works as follows. With a uniform rotation of the carrier 3, one of the tines 4 after turning the carrier to a predetermined angle enters the groove 6 of the cross 5. At the moment the tsevka enters the groove and the tsevka leaves the groove, the angular velocity of the rotor is zero. With a given depth of loosening and tuned installation of the cross, the knives 9 stop when they exit the soil.

Thus, the division of the soil into lumps by knives occurs without hitting the lumps at the moments when the knives exit the soil.

Compared with the prototype, the proposed cutter will reduce the energy consumption for tillage by 10% or more due to a significant reduction in the kinetic energy of soil lumps after impacts with knives. Information sources:

1. Barefoot E.S., Vernyaev O.V., Smirnov I.I. and others. Theory, design and calculation of agricultural machinery. - M.: Mechanical Engineering, 1978. - 567 p.

2. Mounted milling cutter ФН - 1.4 / [Electronic resource]. - Access mode: URL: http://agrosfera26.ru/index.php?option=com_content&view=article&id=67 (accessed September 20, 2017).

Claims (1)

A soil mill containing a housing, a gearbox, a rotor with a horizontal axis of rotation, on the shaft of which there are disks with L-shaped knives mounted on them, characterized in that a Maltese mechanism is introduced into the rotor drive, the carrier of which is driven by a chain transmission from the tractor PTO through gearbox, and the cross is mounted on the rotor shaft together with the knives, providing rotation of the rotor with a variable angular velocity equal to zero at the time of exit of the knives from the soil.

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