RU217401U1 - Manual mechanical chain cultivator - Google Patents

Abstract

The utility model relates to hand garden tools for loosening the soil and removing weeds and can be used in farming in home gardens and garden plots. Manual mechanical chain cultivator, consisting of a handle 1 with a fixed fork 2, in which a drive wheel 3 with a roller chain 12 with lugs is rotatably fixed on the axis and consisting of a movable fork 4, with a working body 5 mounted on a shaft 14 with the possibility of rotation , characterized in that the working body 5 has a mechanical drive from the drive wheel 3 with a fixed roller chain with a gear ratio for accelerated rotation of the working body in the opposite direction in order to ensure an orderly, effective loosening of the soil and weed removal. 5 ill.

Description

The utility model relates to farming in household plots, namely, hand gardening tools for loosening the soil and removing weeds.

Known manual harvester-ripper (patent RU No. 193648 U1, IPC A01V 1/00, 11.07. 2019), containing a rotatably passive working body in the form of a drum and placed on the frame behind the drum plate with a blade for cutting weed roots and loosening soil. The disadvantage of this harvester-ripper is the disordered loosening of the soil by a passive metal drum, cutting the weeds under the root with a blade or cutting the weeds along the stem without removing the cut roots and stems to the soil surface, which leaves the possibility of repeated rapid growth of weeds from the roots remaining in the soil or remaining stems in soil. In addition, when cultivating the soil, the user is required to reciprocate the combine-ripper to achieve a certain quality of soil cultivation, which reduces labor productivity and requires additional labor costs. At the same time, significant labor and effort are required to move passive elements in the soil for cutting weeds and loosening the soil in the form of a fixed plate with a blade.

A manual tillage tool is known (patent FROM RU2098931 C1 MPK A01B 1/20), containing a frame with loosening disks fixed on it, cutting the working body, made in the form of a knife, installed with the possibility of adjusting the depth of processing and the angle of penetration into the soil.

The disadvantage of such well-known devices is also the disordered loosening of the soil with passive loosening discs, the implementation of cutting weeds under the root with a knife or cutting weeds along the stem without extracting the cut roots and stems to the soil surface, which leaves the possibility of repeated rapid growth of weeds from the roots remaining in the soil or remaining in stem soil. In addition, when cultivating the soil, the user is required to reciprocate the cultivator to achieve a certain quality of soil cultivation, which reduces labor productivity and requires additional labor costs. At the same time, in order to move passive elements in the soil for cutting weeds and crushing the soil in the form of fixed knives, significant labor costs and efforts are required.

Close in technical essence is the combisystem cultivators "GARDEHA" (Yandex. Garden cultivators manual 9.48 HD) manual star with a weeder, containing a handle, a frame, a knife and a working body made in the form of stars mounted on the axis of the frame.

The disadvantage of such well-known devices is also disordered loosening of the soil with metal teeth of passive stars, cutting weeds at the root or cutting weeds along the stem with a knife without extracting the cut roots and stems to the soil surface, which leaves the possibility of repeated rapid growth of weeds from the roots remaining in the soil or remaining in stem soil. In addition, when tilling the soil, the user is required to reciprocate the cultivator to achieve a certain quality of tillage, which reduces labor productivity. At the same time, in order to move passive elements in the soil for cutting weeds and crushing the soil in the form of fixed knives, significant labor costs and efforts are required.

A manual mechanical cultivator is known (patent No. 200717 dated 11/06/2020, the author-applicant), consisting of a handle with a fixed fork, in which a drive wheel-pulley with grouser is fixed on the axis with the possibility of rotation and consisting of a movable fork, in which on axis with the possibility of rotation, a working body with pin blades is installed, the working body during the translational movement of the cultivator receives a mechanical drive with a cross V-belt transmission from the drive wheel-pulley and is brought into counter rotation, in which the pin blades carry out an orderly loosening of the soil to a given depth, regulated by the support wheels, as well as sifting the soil and extracting weeds with roots to the surface of the soil.

The disadvantage of this cultivator is the use of a drive wheel-pulley of large diameter to obtain the optimal gear ratio for driving the working body, the creation of a limited gear ratio between the drive wheel-pulley and the pulley of the working body, the risk of slipping of the belt if it is insufficiently tensioned, as well as the difficulty of replacing the working body to change the width of tillage.

The utility model is aimed at improving the quality of tillage, increasing productivity, as well as simplifying the design and operational characteristics of the cultivator and increasing the limits of the gear ratio of the mechanical drive.

The technical result is achieved by the fact that in a manual chain mechanical cultivator, consisting of a handle with a fixed fork, in which a drive wheel with a roller chain is rotatably fixed on the axis and consisting of a movable fork, in which a working body with pin blades, the working body during the translational movement of the cultivator receives a mechanical drive from the roller chain of the drive wheel and is brought into counter rotation, in which the pin blades carry out an orderly loosening of the soil to a predetermined depth, adjustable by the support wheels, as well as sifting the soil and extracting weeds with roots to the soil surface .

The utility model is illustrated by drawings:

In FIG. 1 shows a general view of a manual mechanical cultivator;

in fig. 2 is a side view;

in fig. 3 shows a top view;

in fig. 4 is a rear view;

in fig. 5 shows a fragment of a roller chain with special plates (attachments) for attachment to the drive wheel.

Rotating by a chain transmission in the direction opposite to the movement of the cultivator, the working body with pin blades in uniform parts, due to the forced accelerated rotational movement, loosens the soil, destroys soil clods, uproots weeds, sifts the soil and throws weeds with roots onto the surface of the soil. The width of the processing strip is up to 30 cm, and the depth is up to 8 cm.

The chain mechanical cultivator includes a handle 1, a fixed fork 2 with a drive wheel 3 and a movable fork 4 with an active working body 5 rotating on bearings, having an asterisk 6 and pin blades 7. The drive wheel 3 has lugs 10 designed to prevent the drive wheel from slipping on the soil , increasing its adhesion to the soil and creating a torque to the drive wheel. Grousers are long bolts 17 up to 50 mm long and up to 5 mm in diameter, inserted into holes drilled in the drive wheel rim on both sides of the roller chain and simultaneously fastening special chain plates (attachments) 16 and the chain itself to the drive wheel 3.

Roller chain 12, supported by attachments 16, is fixed on the outer side of the drive wheel. The presence of attachments (racks) allows the teeth of the sprocket to freely penetrate between the chain rollers during rotation, and if the space between the chain rollers is clogged with damp soil, freely push the soil out of the chain. Chains with attachments having a different pitch are produced by the industry.

The movable fork 4 to the axis of the drive wheel 8 and has a chain drive gap adjuster 9, made in the form of a bolt with two adjusting nuts and serving to move the driven sprocket away (approach) to the chain. The position of the sprocket 6 and the working body 5 relative to the drive wheel is fixed by the rack 11.

The working body 5 is made in the form of two parts, each of which consists of two metal circles connected by a tube and plates, on which the pins are fixed.

The driven sprocket 6 is fixed on the shaft 14, which rotates in two bearings mounted in metal plates 13. The ends of the shaft 14 go out to the sides of the metal plates 13. The tubes of the working body are put on the ends of the shaft 14 and parts of the working body are fixed.

Manual mechanical chain cultivator with an active working body works as follows.

The user, holding the handles 15 of the handle 1 of the cultivator at a level convenient for him, moves the cultivator forward. The drive wheel 3 due to the adhesion of the lugs 10 to the soil rotates, bringing the roller chain 12 located on it into counter rotation of the chain sprocket 6 with the shaft 14, on which the working body 5 is located.

The working body 5, due to the large gear ratio of the chain drive, forcibly rotates at a high angular speed in the opposite direction with respect to the translational movement of the cultivator and with the pins of 10 blades in uniform parts captures the soil, destroys soil clods, pulls out weeds with roots from the soil, sifts the soil and throws weeds with roots on the soil surface. The cultivated soil is loosened and cleared of weeds.

The depth of tillage is set by moving in the grooves of the racks with support wheels on the axis of the working body in a vertical plane.

The proposed manual mechanical cultivator achieves high productivity with high-quality loosening of the soil and removal of weeds, as well as a reduction in the efforts applied for tillage due to the absence of passive elements for crushing the soil and cutting weeds in the form of knives and plates, which require significant physical movement under the soil layer. efforts.

Thus, the claimed utility model reduces the cost of labor and energy of the user when performing work, is efficient and easy to use, simple and reliable in design.

Claims (1)

Manual mechanical chain cultivator, consisting of a handle with a fixed fork, in which a drive wheel with a roller chain and lugs is rotatably fixed on the axle, a movable fork with a working body mounted on a shaft with the possibility of rotation, characterized in that the working body has a mechanical drive from a roller chain fixed on the drive wheel with a gear ratio for accelerated rotation of the working body in the opposite direction.

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