RU2504138C1 - Rotary mower of design by geer-ilyichev - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: invention relates to agricultural machinery industry and can be used for mowing grass, grain and small shrubs. The rotary mower comprises a hitch, a V-belt drive, a main gearbox, a detachable beam, skis, cutting discs. The main gearbox comprises only conical pairs. The detachable beam consists of a bottom and a flat lid. The bottom and the lid form a sealed container. The removable cups of bearing assemblies are mounted on the flat lid. In the bearing assemblies the shafts are mounted. On the upper ends of the shafts the cutting discs with blades are mounted. At the lower ends of the shafts the bevel gears are located. The gears are paired with bevel gears mounted on the horizontal shafts. The horizontal shafts are mounted in the bearing assemblies mounted in the paired plates. The plates are located at a distance b from each other, and are fixedly secured in the bottom of the detachable beam with a pitch t.

EFFECT: decrease of metal consumption is provided, simplification of design, ease of maintenance and increase in service life of the mower.

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Description

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

Known rotary cutting apparatus for a rotary mower (RF patent No. 2282969), comprising gearboxes with rotors fixed to their shafts with cutting knives, made up of input, intermediate and cutting blocks, and intermediate blocks made in the form of a sleeve with shafts and coupling halves between the input and cutting blocks, as well as cutting blocks between each other, while the cutting blocks have gears containing one drive shaft and two driven shafts with rotors and cutting knives, and the transmission of torque to the rotors it is installed through a shaft and one bevel gear separate for each rotor.

The disadvantages of this cutting apparatus to a rotary mower is that the cutting apparatus is a composite assembled from separate blocks. This design significantly reduces the strength of the cutting apparatus, which is necessary during the mowing process, in addition, the task of compaction of all joints is complicated to ensure the safety of the lubricant needed to lubricate gear pairs and bearing assemblies. The design of the cutting apparatus does not provide for the ability to quickly adjust the gaps in the conical pairs as they wear. The bottom of the cutting apparatus is stepped in its lower part, which worsens the process of copying the surface of the field, especially when changing the direction of movement of the mower during the mowing process. Perhaps cutting soil with stubble. The use of cylindrical gear pairs in the drive of the cutting apparatus reduces the life of the cutting apparatus, since the cylindrical gear pairs do not provide for adjustment of the gap in them as the teeth wear.

Also known is a rotary mower (certificate for utility model of the Russian Federation No. 1595), which we adopted as a prototype, containing an attachment, a V-belt drive, a main gearbox and rotary modules mounted relative to each other with a 180º turn and made in the form of bevel gears with cutting discs mounted on top of bevel gears, and the latter are mounted on the bottom of the split beam and are interconnected by horizontal shafts through couplings.

The disadvantages of this rotary mower are that in its main gearbox a cylindrical pair of gears is used, in which the possibility of adjusting the gap as the teeth wear is not structurally incorporated. The rotation modules do not provide the ability to quickly adjust the gaps in their conical pairs as the gear teeth wear. The lubrication of all rotary modules, as well as the main gearbox, is carried out individually. The presence of separate housings of rotary modules complicates the design and leads to increased metal consumption.

The aim of the invention is to simplify the design and maintenance of a rotary mower, as well as increasing the service life and reducing metal consumption.

This goal is achieved by the fact that in the known rotary mower, which contains an attachment, a V-belt drive, a main gearbox, a split beam bottom, skis, cutting discs mounted above the split beam, cutting discs rotating in pairs towards each other are driven by horizontal shafts, connected by couplings through conical pairs, with the main gearbox having only conical pairs, the split beam consists of a bottom made in the form of a trough and a flat cover that are fastened between them with bolted joints, form an airtight container for lubrication, on a flat cover with a step t, removable cups of bearing assemblies are mounted through shims, in which shafts are installed, on the upper ends of which cutting discs with knives are mounted, and on the lower ends - bevel gears working in pairs with bevel gears installed through shims on horizontal shafts mounted in bearing units mounted in paired plates located at a distance b from each other, fixed ennyh, motionless, in the bottom of the detachable timber also step t.

The exclusion from the design of the rotary mower of the rotary modules, which are bevel gears having their own separate housings, a number of seals and an autonomous lubrication system, simplifies the design of the mower as a whole and reduces its metal consumption, and the introduction of a sealed grease container common to all bevel pairs and bearings simplifies the lubrication system of the unit, therefore, its maintenance.

In addition, the introduction to the design of a rotary mower of removable cups, with shafts installed in them, on the upper ends of which there are cutting discs, and on the lower ends - bevel gears mounted on a flat cover with a pitch t of a split bar through shims in combination with shims gaskets on horizontal shafts allows you to quickly adjust the gaps in the conical pairs when wearing teeth, as well as carry out their repair.

The elimination of the design of the main gearbox of the rotary mower of the cylindrical gear pair can significantly increase the service life of the mower, since the remaining bevel gear pair in the main gearbox structurally provides the ability to adjust the gaps in the teeth as they wear.

The design of the rotary mower is illustrated by drawings, where Fig. 1 shows a rotary mower assembly, Figs. 2, 2a, 2b, 2c show cutaway sections of a cutting apparatus with a main gearbox.

A rotary mower consists of an attachment 1, a V-belt transmission 2, a main gearbox 3, a main conical pair 4, a split beam 5, consisting of a bottom 6 made in the form of a trough, and a flat cover 7, interconnected by bolts 8 and forming an airtight container, skis 9 installed under the bottom 6 against each cutting disc 10 with knives 11, cutting discs 10 mounted on the upper ends of the shafts 12 installed in the bearing assemblies 13 of the removable cups 14, which are fastened with bolts 15 in increments of t through the shims 16 flat cover 7 of the split beam 5, bevel gears 17 are installed at the lower ends of the shafts 12, which are paired with bevel gears 18 installed through shims 19 on horizontal shafts 20 connected to each other by clutches 21, horizontal shafts 20 are mounted in bearing assemblies 22, which are mounted on paired plates 23, fixed, with a step t at a distance b from each other in the bottom 6 of the split beam 5 of the rotary mower, at the extreme end of the split beam 5 mounted field divider 24.

Rotary mower works as follows.

The rotary mower mounted on the tractor, after making the necessary adjustments, is mounted on the edge of the field, transferred to the working position, then the tractor’s PTO is turned on and after setting the rotation to stable, the rotor turns on the corresponding gear of the tractor and starts moving. In this case, the rotation from the tractor PTO is transmitted to the V-belt transmission 2, which rotates the main gearbox 3, which rotates the main conical pair 4 of the split beam 5, then the rotation from the conical pair 4 is transmitted to the horizontal shafts 20, interconnected by clutches 21, which rotate in the bearing units 22, transmit the rotation through the bevel gears 18 to the gears 17, which are mounted on the lower ends of the shafts 12, rotating in the bearing assemblies 13 of the removable cups 14. At the upper ends of the shafts 12, cutting discs 10 with knives 11 are mounted e, rotating in pairs towards each other without support, cut off the plants and transfer them through the split beam 5 of the cutting apparatus of the rotary mower, forming a swath. The flow of grass that enters the field divider 24 is shifted to the side by it, clearing the stubble of grass for the next passage of the tractor wheels.

Claims (1)

A rotary mower containing an attachment, a V-belt drive, a main gearbox, a bottom of a split beam, skis, cutting discs mounted on top of a split beam, a drive of cutting discs rotating in pairs towards each other, carried out by horizontal shafts connected by couplings through conical pairs, characterized in that the main gearbox has only tapered pairs, the split beam consists of a bottom made in the form of a trough and a flat cover, which are fastened together by bolted joints, forming a sealed container, on a flat cover with a step t, removable cups of bearing assemblies are mounted through shims, in which shafts are installed, on the upper ends of which cutting discs with knives are mounted, and on the lower ends - bevel gears working in tandem with bevel gears installed through adjusting gaskets on horizontal shafts mounted in bearing assemblies installed in paired plates located at a distance b from each other and fixed motionless in the bottom of the split beam e in increments of t.

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