RU221246U1 - TURN CUTTING DEVICE - Google Patents

Abstract

The utility model relates to devices for removing grass turf, weeds, cutting off a layer of soil without deep digging of the area and can be used in landscaping, both at the initial stage and during the care and repair of lawns and grassy areas. A device for cutting turf, which is a housing on which a gasoline engine is mounted, an eccentric shaft is also located on the housing, driven by a gasoline engine through a first belt drive located on one side of the eccentric shaft, a wheel drive shaft driven through a second belt transmission located on the other side of the eccentric shaft, through squares at the ends of the wheel shaft, while two rockers are attached to the body, driven through connecting rods located on both sides of the eccentric shaft, and a turf-cutting knife is attached to the bottom of the rockers. The technical result of the proposed technical solution is to increase the reduction of dimensions, ease of manufacture, due to the use of multifunctional parts, without loss of functionality of the device. 1 salary f-ly, 1 ill.

Description

The utility model relates to devices for removing grass turf, weeds, cutting off a layer of soil without deep digging of the area and can be used in landscaping, both at the initial stage and during the care and repair of lawns and grassy areas.

State of the art.

A turf cutting machine is known from the prior art (US20220095554A1, publ. 03/31/2022), in particular a turf cutting machine with a four-wheel drive. The lawn mower has a transmission that includes a drive belt located between a rear axle pulley and a front axle pulley, and which further includes a plurality of deflector pulleys that are located between the rear axle pulley and the front axle pulley to determine the path for the drive a belt that runs from the rear axle to the front axle and then back to the rear axle, passing through the cutting blade.

A solution is known from the prior art, a turf cutter (US20030037934A1 publ. 08.11.2005), containing a frame formed by welding the free edges of the support, frame and end plates, curved relative to one of the two side plates, to the corresponding edges of the other side plate. The axle assembly is rotated relative to the frame by means of a depth adjustment lever between an operating position in which wheels mounted on the axle assembly engage with tubular elements that are slidably and non-rotatably received. on the drive shaft and in the transport position, when the wheels are spaced from the tubular elements. The U-shaped handlebar can be positioned between a working position for gripping during operation and a storage position for lifting and moving. The U-shaped control is mounted to pivot in front of and above the U-shaped handlebar to operate the engine throttle. The threaded lock provides the connection between the handle mounting tube and the handlebar mast and is not removed from the threads by a spring pin that protrudes from the lock and receives in the gap between the mounting tube and the locking plate.

“Blade for cutting turf” is known from the prior art (US20190320597 pub. 10/24/2019). A blade assembly for use with a turf cutter including a first vertical blade, a second vertical blade, and a horizontal blade extending between and coupled to an interior surface of both the first vertical blade and the second vertical blade. Each of the first vertical knife and the second vertical knife includes a first beveled edge extending along the first forward-facing edge from a front portion to a base portion of each of the first vertical knife and the second vertical knife. In addition, each of the first vertical knife and the second vertical knife also includes a second beveled edge extending along a second forward-facing edge adjacent a mounting portion of each of the first vertical knife and the second vertical knife.

The disadvantages of these technical solutions are the relatively high complexity of the design due to more complex operating mechanisms, which also leads to an increase in the overall weight of the structure, which complicates the work with such devices.

Disclosure of utility model

The problem to be solved by the claimed utility model is to create a device for cutting turf that combines simplicity of design and smaller dimensions in comparison with existing analogues, but does not lose its functionality.

The technical result of the proposed technical solution is to reduce the size and ease of manufacture, due to the use of multifunctional parts, without loss of functionality of the device.

This is achieved by the fact that a device for cutting turf is claimed, which is a housing on which a gasoline engine is mounted, an eccentric shaft is also located on the housing, driven by a gasoline engine through a first belt drive located on one side of the eccentric shaft, a wheel drive shaft, driven through a second belt drive located on the other side of the eccentric shaft, through squares at the ends of the wheel shaft, while two rockers are attached to the body, driven through connecting rods located on both sides of the eccentric shaft, and a trimmer is attached to the bottom of the rockers sod knife.

The depth of cutting with a knife is ensured by a sector part with a stopper through two levers that change the position of the rear axle with drive wheels.

The utility model is illustrated by drawings:

Fig. 1 – general view of the device.

In the figures, the following structural elements are indicated by numbers:

1 – Gasoline engine;

2 – Eccentric shaft;

3 – Wheel drive shaft;

4 – Connecting rods;

5 – Rocking chairs;

6 – Turf cutting knife;

7 – Trimmer wheels;

8 – Levers for changing the cutting depth with a knife;

9 – Sector part with stopper.

Implementation of a utility model

The claimed turf cutter is a device for cutting turf, which allows you to quickly, accurately and accurately cut turf and lawn with minimal time, with the ability to cut straight, curved, and also with the ability to re-lay and preserve the presentation of lawn coverings of a given thickness and widths of 30 and 35 cm, depths of 0, 2, 3, 4 cm. This device for cutting turf can be used for work below the cutting level of turf, such as installing automatic watering, carrying out shallowly buried communications in the form of pipes, electrical cables, laying out flower beds on existing lawns, cutting soil when planning for lawns and simply cutting vegetation and soil of a certain thickness, without any measurements, evenly throughout the entire area. When cutting weedy grass vegetation, the roots are completely cut at a certain depth, which leads to the drying and death of the weed without the use of herbicides. There are no unweeded areas left, as is the case with the use of hoes and other tools used in weeding. One of the advantages of this trimmer is its light weight, minimum parts, compactness, and the ability to be transported in a passenger car.

The claimed technical solution works as follows. By means of a gasoline engine 1 located on the body of the device, through a belt drive, the eccentric shaft 2 is driven. This shaft 2 ensures the movement of the turf-cutting knife 6. This movement is ensured by the rockers 5 located on both sides of the body and connected to each other at the top, which drive movement of the connecting rods 4 on both sides of the mentioned eccentric shaft 2. And at the bottom of the rockers, a turf-cutting knife 6 is already attached. On the reverse side of the eccentric shaft 2, through the same belt drive, the drive shaft of the wheels 3, located in the housing, is driven through the squares at the ends of the shaft. The frequency of oscillation of the knife in the horizontal plane is 1500 per minute, with the simultaneous movement of all rotating shafts (pulleys), the drive shaft with squares pressed against the wheels, and the turf is trimmed with simultaneous movement forward. The cutting depth and transport position are provided by a sector piece with a stopper through two levers that change the position of the rear axle with drive wheels.

The depth of trimming with a knife is ensured by a part on the trimmer body, in the form of a semicircular plate with radially cut sectors at a certain distance, in which a spring stopper located on the lever handle is fixed; the second part of the lever, connected to the axis of the drive wheels and the lever handle, changes the position of the rear axle with drive wheels. Also, one of the sectors on this sector part provides a transport position in which trimming is impossible, even if the engine is running, but free rolling on the surface is ensured for delivery to the work site.

In particular, the practical productivity of the trimmer lies in the region of 200-300 m ² of cut turf per hour. The trimmer is operated by one person. The engine speed is 3000 rpm, the eccentric shaft speed is 1500 rpm, the frequency of oscillatory movements of the rockers with a knife is 1500, the speed of movement from the rotation of the wheels by the drive shaft is up to 15 m/min.

The above design capabilities achieve a technical result in reduced dimensions, ease of manufacture, through the use of multifunctional parts, without loss of functionality of the device.

Claims (2)

1. A device for cutting turf, comprising a housing on which a gasoline engine is mounted, and on the housing there is an eccentric shaft driven by the gasoline engine through a first belt drive on one side of the eccentric shaft, a wheel drive shaft driven through a second belt drive , located on the other side of the eccentric shaft, through the squares at the ends of the wheel shaft, while two rockers are attached to the body, driven through connecting rods located on both sides of the eccentric shaft, and a turf-cutting knife is attached to the bottom of the rockers. 2. A device for cutting turf according to claim 1, characterized in that the depth of cutting with a knife is provided by a sector piece with a stopper through two levers that change the position of the rear axle with drive wheels.