RU208477U1 - ROTARY MOUNTED MOWER - Google Patents

Abstract

The utility model relates to agricultural engineering, namely to attachments of walk-behind tractors, and can be used in the design of a mounted rotary mower designed for mowing grass, cereals/cereals, etc. agricultural crops, as well as a small single shrub in the conditions of peasants, farms, etc. The technical result of the claimed technical solution is to increase the reliability of the device. The technical result is achieved by the fact that the mounted rotary mower, containing a frame contour in the form of a structure open around the perimeter of the lower, side and upper parts made of pipes, the contour of the additional element, consisting of the lower, side and upper parts made of pipes, is parallel to the frame contour and has its dimensions; horizontal plane, the lower horizontal pipes of the frame contour and the additional element are closed to each other by a rounded element on the side opposite to the location of the pipes, made at an angle to the horizontal plane, one shaft is made inside the lower pipe of the frame contour, simultaneously transmitting rotation to two rotors with disks and knives, each from the rotors installed en on a shortened shaft rotating on two adjacent bearings, made in the upper part of the gearbox containing two toothed gears, two support skis are attached to one external horizontal tube of the frame contour of the device. 1 z.p. f-ly, 6 ill.

Description

The utility model relates to agricultural engineering, namely to the hinged devices of walk-behind tractors and can be used in the design of a mounted rotary mower, intended for mowing grasses, cereals / cereals, etc., agricultural crops, as well as small single shrubs in the conditions of peasant farms etc.

The closest technical solution (prototype) is a rotary mounted mower (Patent No. 171946, A01D 34/63, publ. 06/21/2017 Bul. No. 18), containing a frame contour in the form of an open structure along the perimeter of the lower, side and upper parts, made made of pipes, the contour of the additional element, consisting of the lower, side and upper parts made of pipes, is parallel to the frame contour and has its dimensions, the mechanism for transferring rotation from the walk-behind tractor to the cutting device containing two rotors with discs and knives is located, including , inside the pipes of the frame contour, there are also support skis.

Disadvantages of the prototype: reduced reliability of the device due to the fact that:

- the side pipe of the mower is vertical;

- the lower horizontal pipes of the frame contour and the additional element are made open-ended;

- two lower (horizontal) shafts are used inside the lower tube of the frame contour;

- the number of structural elements in the lower gears has been increased;

- support skis are simultaneously attached to the two lower (horizontal) pipes of the device.

The technical problem solved by the creation of a new device is that when mowing grass (especially wavy and tall vegetation) using a mounted rotary mower, the consumer often faces the problem of breakage of device elements and the entire structure as a whole, which occurs due to "clogging" with grass the space between horizontal pipes, winding vegetation on the shafts of the device, getting it into the bearings of the gearboxes, etc., causing breakage of the shafts, jamming of bearings, breakage of knives, etc., which together reduces the reliability of the rotary mounted mower during its operation.

The technical result of the claimed utility model is the creation of an improved device with a new set of structural elements, which makes it possible to increase the reliability of the mounted rotary mower.

The technical result is achieved by the fact that a rotary mounted mower containing a frame contour in the form of an open structure along the perimeter of the lower, side and upper parts made of pipes, the contour of an additional element, consisting of the lower, side and upper parts made of pipes, is parallel to the frame contour and has its dimensions, the mechanism for transferring rotation from the walk-behind tractor to the cutting device, containing two rotors with discs and knives, is located, including the side pipes of the frame contour and the additional element are made at an angle to the horizontal plane, the lower horizontal pipes of the frame contour and the additional element are closed to each other by a rounded element on the side opposite to the arrangement of the pipes made at an angle to the horizontal plane, one shaft is made inside the lower pipe of the frame contour, transmitting rotation simultaneously to two rotors with discs and knives, each of the rotors is mounted on a shortened shaft rotating on two adjacent bearings made in the upper part of the gearbox containing two gears, two support skis are attached to one outer horizontal pipe of the frame contour of the device. In this case, the length of the upper horizontal part of the frame contour is less than the length of its lower part.

New essential distinguishing features of the proposed technical solution are the following features:

- the side pipes of the frame contour and the additional element are made at an angle to the horizontal plane;

- the lower horizontal pipes of the frame contour and the additional element are closed to each other by a rounded element on the side opposite to the arrangement of pipes made at an angle to the horizontal surface;

- inside the lower tube of the frame contour, one shaft is made, transmitting the rotation simultaneously to two rotors with disks and knives;

- each of the rotors is mounted on a shortened shaft rotating on two adjacent bearings made in the upper part of the gearbox containing two gears;

- two support skis are attached to one external horizontal pipe of the lower part of the frame contour of the device.

The set of new essential distinctive features, along with the features known from the prior art, is sufficient to solve this technical problem and to obtain the technical result provided by the utility model - the creation of an improved device that makes it possible to increase its reliability.

The essence of the proposed utility model, its feasibility and the possibility of industrial application are illustrated by drawings (Figs. 1, 2, 3, 4, 5, 6), where:

in FIG. 1 - kinematic diagram of a mounted rotary mower;

figure 2 - mounted rotor mower (front view);

figure 3 - rotary mower (top view, rotated);

in FIG. 4 - mounted rotary mower (right side view);

Fig. 5 - mounted rotary mower (left side view);

in FIG. 6 - mounted rotary mower in axonometric projection.

The drawings have the following symbols:

1 - frame contour;

2 - lower (horizontal) part of the frame contour;

3 - side part of the frame contour;

4 - upper (horizontal) part of the frame contour;

5 - pipe of the lower part of the frame contour;

6 - pipe of the side part of the frame contour;

7 - pipe of the upper part of the frame contour;

8 - pipe shaft of the lower part of the frame contour;

9 - pipe shaft of the lateral part of the frame contour;

10 - upper shaft;

11 - lower gearbox;

12 - lower gearbox;

13 - shortened gearbox shaft 11

14 - shortened shaft of the gearbox 12 ;;

15 - disk (rotor);

16 - disk (rotor);

17 - cutting elements (knives);

18 - support ski

19 - support ski;

20 - intermediate gearbox;

21 - intermediate gearbox;

22 - pulley;

23 - pulley;

24 - belt drive;

25 - motoblock;

26 - docking unit;

27 - additional element;

28 - the lower tube of the additional element;

29 - side pipe of an additional element;

30 - docking unit pipe;

31 - closed element;

32 – driven gear wheel;

33 - driven gear wheel;

34 - a leading gear wheel;

35 - a leading gear wheel;

36 - double bearing;

37 - double bearing;

38 - pulley;

39 - the upper tube of the additional element.

The rotor mounted mower, shown in Figs. 1, 2, 3, 4, 5, 6 (hereinafter referred to as the mower) is made in the form of a frame contour 1 (Fig. 3, 4), open around its perimeter and welded from pipes. Frame contour 1 is a structure consisting of a lower (horizontal) part 2 (Fig. 3), a side part 3 (Fig. 4) and an upper part 4 (Fig. 3). The lower part 2 (Fig. 3) and the upper part 3 (Fig. 4) of the frame contour 1 (Fig. 3,4) are made parallel to the horizontal plane and parallel to each other.

The length of the upper (horizontal) part 4 (Fig. 3) of the frame contour 1 (Fig. 3.4) is less than the length of the lower part 2 (Fig. 3) of the frame contour 1 (Fig. 3.4).

The side tube 6 (Fig. 3.4) of the frame contour 1 (Fig. 3.4) and the side tube 29 of the additional element 27 are made at an angle, for example, 45 ° to the horizontal plane (surface). In this case, the side pipe 6 (Fig. 3.4) of the frame contour 1 (Fig. 3.4) of the device is made at right angles to the lower (horizontal) pipe 2 (Fig. 3) of the frame contour 1 (Fig. 3.4). The side pipe 29 (Fig. 4) of the additional element 27 (Fig. 3) is made at right angles to the lower (horizontal) pipe 28 (Fig. 3) of the additional element 27.

Pipes 2.6 (Fig. 3.4) of the frame contour 1 (Fig. 3.4) are made docked through the gearbox housing 21 (Figs. 1, 2, 3, 4). The plane of the gearbox housing 21, in which the pipes 2,6 included in it are located (Fig. 3.4), is inclined at an angle, for example, 45º to the horizontal plane (surface).

Inside pipes 5, 6, 7 (Fig. 2, 4, 3), respectively, lower 2 (Fig. 3), lateral 3 (Fig. 4) and upper 4 (Fig. 3) parts of the frame contour 1 (Fig. 3.4 ) the shafts 8,9,10 are located (Fig. 1). Shafts 8,9,10 transmit rotation from the walk-behind tractor 25 (Fig. 1.4) to the cutting device of the device.

On the lower horizontal pipe 5 (Fig. 2.3) of the lower part 2 (Fig. 3) of the frame contour 1 (Fig. 3.4), two gearboxes 11.12 (Fig. 1) are installed with fixed on short output shafts 13.14 gearboxes 11,12 discs (rotors) 15,16 (Figs. 1, 2, 3, 4) with cutting elements (knives) 17 (Fig. 1.3).

Inside the lower (horizontal) pipe 5 of the lower part 2 of the frame contour 1, one (single) shaft 8 is made, transmitting the torque from the lower intermediate gearbox 21 simultaneously to both lower gearboxes 11,12.

Two support skis 18,19 (Fig. 1,3,4) of the device are fixed on one lower horizontal pipe 5 (Fig. 2,3) of the lower part 2 (Fig. 3) of the frame contour 1 (Fig. 3,4).

On the side pipe 6 (Fig. 3.4) of the side part 3 (Fig. 4) of the frame contour 1 (Fig. 3.4), two intermediate gearboxes 20.21 (Fig. 1.3.4) are installed.

The upper shaft 10 (Fig. 1) connects the pulley 23 with the upper intermediate gearbox 20 (Figs. 1, 2, 3, 4).

The side shaft 9 (Fig. 1) connects the upper intermediate gearbox 20 (Figs. 1,2,3,4) with the lower intermediate gearbox 21.

The lower shaft 8 (Fig. 1) connects the lower intermediate gearbox 21 (Figs. 1,2,3,4) with two (lower) gearboxes 11,12 (Fig. 1).

The pulley 23 is designed to take power from the pulley 22 of the engine of the walk-behind tractor 25 (Fig. 1, 4) using a belt drive 24 (Fig. 1).

Pulley 38 is designed for tensioning belt drive 24.

Intermediate gearboxes 20,21 (Fig. 1, 3, 4) transmit torque from the pulley 23 (Fig. 1) to the shaft 8, followed by the transmission of torque to the short output shafts 13,14 of the gearboxes 11,12, which transmit rotation to the disks ( rotors) 15, 16 (Fig. 1, 2, 3, 4) with knives 17 (Fig. 1, 3).

The mechanism for transferring rotation from the motoblock 25 (Fig. 1.4) to the cutting device of the mower (discs - rotors with knives) contains pulleys 22, 23, 38, a belt drive 24, a shaft 10, two intermediate gearboxes 20.21 (Fig. 1, 2,3), side shaft 9 (Fig. 1), gearboxes 11,12. Pulley 22 is part of the walk-behind tractor 25 (Fig. 1.4).

The docking unit 26 (Figs. 1,3,4) is designed to connect the frame contour 1 (Fig. 3.4) of the mower with the walk-behind tractor 25 (Fig. 1.4).

The mower device has an additional element 27 (Fig. 3), which is installed parallel to the frame contour 1 (Fig. 3.4) so that in the working position of the device, the lower pipe 5 (Fig. 2.3) of the lower part 2 (Fig. 3 ) of the frame contour 1 (Fig. 3,4) and the lower (horizontal) pipe 28 (Fig. 3) of the additional element 27 (Fig. 3) are located in the same horizontal plane at the same distance from the ground surface and are parallel to each other.

The docking unit 26 (Figs. 1,3,4) is made connected to the side pipe 6 (Fig. 3.4) of the frame contour 1 and is located parallel to the horizontal surface (plane), and also parallel to the lower pipe 5 (Fig. 2.3) frame contour 1 (Fig. 3,4) and the lower pipe 28 (Fig. 3) of the additional element 27 (Fig. 3).

The side pipe 29 (Fig. 4) of the additional element 27 (Fig. 3), made parallel to the pipe 6 (Fig. 3.4) of the side part 3 (Fig. 4) of the frame contour 1 (Fig. 3.4), is located at an angle 45º to the horizontal plane (surface).

The upper tube 39 (Fig. 2.3) of the additional element 27 (Fig. 3) is made parallel to the upper tube 7 (Fig. 2.3) of the frame contour 1 (Fig. 3.4).

The lower tube 5 (Fig. 2.3) of the frame contour 1 (Fig. 3.4) and the lower tube 28 (Fig. 3) of the additional element 27 are closed (connected) to each other element 31 (Fig. 3) located on the side of the device, which is opposite to pipes 6.29 (Fig. 3.4), made at an angle to the horizontal surface (plane), that is, with an inclination. The element 31 (Fig. 3) is made rounded, i.e. bent into a semicircle from a pipe, the diameter of which is equal to the diameter of the lower pipe 5 of the frame contour 1 and the diameter of the lower pipe 28 of the additional element 27.

The mower works as follows: The torque from the pulley 22 (Fig. 1) of the walk-behind tractor 25 (Fig. 1.4) is transmitted by the belt drive 24 (Fig. 1) to the pulley 23, which is kinematically connected to the intermediate gearbox 20 (Fig. 1.2) , while the necessary tension of the belt transmission is carried out by the pulley 38 (Fig. 1.3).

Further, by the shafts 10,9,8 (Fig. 1) and intermediate upper and lower gearboxes 20,21 (Fig. 1, 2, 3), the torque is transmitted to the driven gears 32,33 (Fig. 1) of the gearboxes 11,12 by means of driving gears 34.35 located on the horizontal shaft 8 of the lower part of the frame contour 1 (Fig. 3.4).

Driven gears 32.33 (Fig. 1) of gearboxes 11.12 transmit torque to the associated shortened shafts 13.14 installed in adjacent (double) bearings 36.37, respectively, and further directly connected to the shortened shafts 13.14 discs 15.16 (Fig. 1, 2, 3, 4) with knives 17 (Fig. 1, 3).

When moving forward a walk-behind tractor 25 (Fig. 1.4) with a mower, counter-rotating discs (rotors) 15.16 (Fig. 1, 2, 3, 4) mow the grass in front of them with cutting elements 17 (Fig. 1.3). fits it into a roll.

In contrast to the prototype, where the side tube of the frame is made vertical, which leads to a decrease in the reliability of the mower operation due to the fact that the distance between the cutting elements of the device and the walk-behind tractor is reduced, and this does not allow the mowed grass to normally fit into the swath, because the mowed grass gets stuck between the mower and the walk-behind tractor, contributing to the breakdown of the device elements; in the proposed technical solution, the side part of the frame contour is made at an angle to the horizontal surface and at right angles to the lower pipe of the frame contour of the device, which increases the distance between the cutting elements of the device and the walk-behind tractor, increasing reliability the operation of the elements of the device.

Unlike the prototype, where the lower horizontal pipes of the frame contour and the additional element are not closed with each other, which leads to the seizure of the mowed grass by this end of the device and causes periodic interruption of the mower operation to remove the captured grass by the user, in the proposed technical solution the lower pipes are closed to each other a rounded element, which eliminates the winding of grass on this end of the mower and ensures its continuous operation without breakdowns, increasing reliability.

The transmissions transmitting torque to the discs with knives (including gear drives) of the proposed technical solution and the prototype differ from each other. Unlike the prototype, where two separate shafts are made inside the lower tube of the frame contour, and rotation to the second shaft is transmitted from the first shaft through the first lower gearbox containing three gears (i.e. the first shaft transfers rotation from the lower intermediate gearbox to the first lower a gearbox containing three gears, and then through it, the rotation is transmitted to the second lower shaft and then to the second lower gearbox containing two gears, in the proposed technical solution, only one shaft is made inside the lower pipe of the frame contour, which transmits rotation from the lower intermediate reducer simultaneously on both lower gearboxes containing two toothed gears, which increases the reliability of the device by reducing the number of elements (shafts and gears) of the device.

Unlike the prototype, where elongated shafts are used in gearboxes and, accordingly, spaced bearing assemblies on elongated shafts are used, which structurally complicates the gearbox due to the large number of bearing assemblies and increased shaft length, reducing the reliability of gearboxes due to the complexity of their design and low shaft stiffness, in the proposed technical solution uses shortened shafts in gearboxes, respectively, one bearing unit with a double bearing in each gearbox is used, which structurally simplifies each gearbox due to a reduced number of bearing units and a reduced shaft length, increasing the reliability of gearboxes and the entire device by simplifying the design of gearboxes and greater rigidity of the lower (horizontal) shaft of the frame contour of the device.

Unlike the prototype, where the two lower (horizontal) shafts of the device are closed through the support skis, which does not provide the rigidity of the support skis and the lower part of the mower, in the proposed technical solution, the support skis are attached to the lower (front) shaft of the frame contour of the device connected to an additional element with the help of a closing element (pipe), which provides a more reliable (durable) contour of the lower part of the mower, on the lower pipe of which the support skis are fixed, therefore, when the mower is operating (moving it over the surface of the post with vegetation), the load on the support skis is reduced, their breakage is excluded due to by removing the load on the skis, which increases the reliability of the support skis, the lower contour and the device as a whole.

All components of the claimed technical solution are interconnected by assembly operations, i.e. are in functional and constructive unity.

Implementation of the proposed utility model allows solving the claimed technical problem and ensuring the achievement of the claimed technical result.

The proposed technical solution, which has a constructive unity, implements a common functional purpose (functional unity).

The prior art has not found an analogue characterized by features identical to all essential features of the claimed utility model.

Claims (2)

1. Mounted rotary mower, containing a frame contour in the form of an open structure along the perimeter of the lower, side and upper parts made of pipes, the contour of an additional element, consisting of the lower, side and upper parts made of pipes, parallel to the frame contour and having it dimensions, a mechanism for transferring rotation from a walk-behind tractor to a cutting device containing two rotors with discs and knives, located, including inside the pipes of the frame contour, and support skis, characterized in that the side pipes of the frame contour and the additional element are made at an angle to the horizontal plane, and the lower horizontal pipes of the frame contour and the additional element are closed to each other by a rounded element on the side opposite to the arrangement of pipes made at an angle to the horizontal plane, while inside the lower pipe of the frame contour one shaft is made, transmitting rotation simultaneously to two rotors with discs and knives , and each of the two The rotors are mounted on a shortened shaft rotating on two adjacent bearings made in the upper part of the gearbox containing two toothed gears, and the two support skis are attached to one outer horizontal pipe of the frame contour. 2. A mower according to claim 1, characterized in that the length of the upper horizontal part of the frame contour is less than the length of its lower part.

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