RU2282969C1 - Rotary cutter bar - Google Patents

Abstract

FIELD: agricultural engineering, in particular, plant mowing equipment.

SUBSTANCE: rotary cutter bar has input, intermediate and cutting units. Intermediate units are made in the form of sleeve with shaft and half-couplings and are adapted for transmitting torque and connecting input and cutting units with one another, as well as for connecting cutting units with one another. Cutting units have reducers with one driving shaft and two driven shafts on which rotors with cutting knives are fixed. Torque is transmitted to each rotor through shaft and one individual conical gear transmission associated therewith.

EFFECT: unitized construction, which simplifies and intensifies assembling of cutter bar and reduces standing time spent for repair.

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Description

The invention relates to agricultural machinery and can be used in road, agriculture, forestry, land reclamation and utilities for mowing crops, grasses and small bushes.

Known rotary mower (patent RU No. 2213441, A 01 D 34/63, 34/64, 34/66, 2003), the rotary cutting apparatus of which contains two gearboxes with rotors with cutting knives fixed to their shafts.

The disadvantages of the rotary cutting apparatus of the known rotary mowers are:

- low efficiency of the mechanism, since the transmission of torque to the subsequent rotor is carried out through the gear transmission of the previous rotor and the intermediate bevel gear;

- the complexity of the design and lack of technical reliability due to heavy loads in the gears;

- limited grip width, since with an increase in the number of rotors, the loads in the gears of previous rotors will increase by a multiple of the number of rotors.

The problem to which the invention is directed, is to increase efficiency, operational reliability, reduce metal consumption and expand technological capabilities.

This is achieved by the fact that the proposed rotary cutting apparatus is made of separate blocks (nodes), and the gearboxes contain one drive shaft and two driven shafts with rotors and cutting knives, and torque is transmitted to the rotors through the shaft and one gear separately for each rotor bevel gear. The rotational design of the rotary cutting machine expands its technological capabilities, facilitates and accelerates assembly and reduces downtime during repairs, and the transmission of torque to each rotor through the shaft and one separate pair of bevel gears increases efficiency and reliability.

The invention is illustrated by the kinematic diagram shown in the drawing.

Rotary cutting apparatus includes input, intermediate and cutting units.

The input unit is a gearbox (multiplier) 1, the diagram shows a cylindrical one (it may be a gearbox or a multiplier of another type or direct transmission), and serves to coordinate the cutting apparatus with the machine on which it will be installed. The intermediate unit is a sleeve 2 and a shaft 3 with half couplings 4 and is used to connect the input and cutting, as well as cutting blocks together and transmitting torque.

The cutting unit is a bevel branched gear (multiplier), comprising a housing 5, a drive shaft 6 with half couplings 7, two drive 8 and two driven 9 bevel gears with driven shafts 10, on which rotors 11 with cutting knives 12 are fixed. The number of intermediate and cutting blocks are set depending on the required width of the cutting apparatus. All blocks are interconnected and locked. Possible misalignment of the shafts is compensated by couplings.

Rotary cutting device operates as follows.

The torque applied to the input shaft 1 input shaft through its gear and secondary shaft, as well as through compensating couplings 4 and shafts 3 of the intermediate blocks is transmitted to the drive shafts 6 of the cutting blocks, then through the leading 8 and driven 9 bevel gears and driven shafts 10, the torque is transmitted to the rotors 11. When the rotary cutting apparatus moves forward, the rotating rotors 11 with cutting knives 12 mow the vegetation in front of them and dump them into rolls.

Claims (1)

A rotary cutting apparatus comprising gears with rotors with cutting knives fixed on their shafts, characterized in that it is made up of input, intermediate and cutting blocks, the intermediate blocks being made in the form of a sleeve with a shaft and half couplings and connecting the input and cutting blocks to each other , as well as cutting blocks with each other, while the cutting blocks have gears containing one drive and two driven shafts with rotors and cutting knives, and the transmission of torque to the rotors is carried out through the shaft and one tdelnuyu for each rotor bevel gear.