RU2803244C2 - Screw auger for planting seedlings on a film coating - Google Patents

Abstract

FIELD: agriculture.

SUBSTANCE: screw auger is proposed for planting seedlings on a film cover, containing a carrier pipe, on the lower part of which a screw is installed, and a rotation handle is attached to the upper end. The screw is double-threaded, the upper end of the guide rod of circular cross-section is attached to the lower end of the carrier pipe, the lower end of the rod is sharpened into a cone, the axis of the rod coincides with the axis of the drill. Between the outer rims of the cutting edges of the drill and the upper points of the lower half-turns of the screw, two cutter knives with metal cases and replaceable 9 mm blades are installed. The lower points of the knife bodies are attached to the outer ends of the cutting edges of the screw, and the remaining points of attachment of the bodies coincide with the contact points of the knife bodies and the outer edges of the screw spirals. On the front edges of the screw, two segments of replaceable 19 mm trapezoidal blades for technical knives are installed, the segments are fastened to the surfaces of the screw in such a way that the cutting edges of the blades are ahead of its cutting edges of the screw in the direction of rotation of the screw. The lines connecting the upper and outer edges of the screw spirals are in the form of curved raised lines.

EFFECT: improved weed suppression and creation of more favourable conditions for plant growth.

1 cl, 1 dwg

Description

The invention relates to the field of agriculture and can be used in gardening.

Growing vegetable and berry crops in film-covered areas solves the problems of controlling weeds and those diseases that are transmitted through contact of fragments of the above-ground parts of plants with the ground.

There are advertisements on the Internet for many examples of garden augers. But these drills are not suitable for planting seedlings on a film covering, since they cannot keep the axes of the drill and the well aligned during the drilling process and do not cut off plant roots. The roots are wound around the auger, destroy the walls of the well, and dislodge the axis of the drill from the axis of the well.

The closest to the proposed device in terms of the set of features is the device according to application for invention No. RU 2022127196 A. They differ only in the shape of the replaceable blades mounted on the front surfaces of the auger. Trapezoidal-shaped blades provide a greater width of soil gripping by the blades, which provides an additional benefit in reducing the effort when drilling a well.

Before planting seedlings on the film covering, cross cuts equal to the diameter of the auger are made at the planting points.

The problem to which this invention is aimed is to prevent the increase in the size of these cuts and reduce the effort when drilling landing wells.

The technical result that can be obtained from its implementation is to improve weed suppression and create more favorable conditions for plant growth.

The technical result is achieved by the fact that a guide rod of round cross-section is added to an auger drill containing a supporting pipe, at the lower end of which a double-entry auger is installed, and a rotation handle is attached to the upper end, the upper end of the rod is attached to the lower end of the pipe, the lower end of the rod sharpened to a cone, the axis of the rod coincides with the axis of the drill, two stationery knives with metal bodies and replaceable 9 mm blades are installed between the outer edges of the cutting edges of the drill and the upper points of the lower half-turns of the auger, the lower points of the knife bodies are attached to the outer ends of the cutting edges of the auger, the axis of the housings parallel to the drill axis, the remaining attachment points of the housings coincide with the points of contact of the knife bodies and the outer edges of the auger spirals, and on the front edges of the auger two sections of replaceable 19 mm trapezoidal blades for technical knives are installed; the sections are fastened to the surfaces of the auger using four stapler staples through holes in the front edges of the auger. At the junctions of the upper and outer edges of the auger spirals, sharp protrusions are formed that damage the film coating when lifting the drill from the well. They must be removed (ground down) in such a way that the lines connecting these edges have the shape of curved convex lines. In fig. 1 shows a general view of the device.

The device consists of a supporting pipe 1, to the upper end of which a drill 3 rotation handle is attached by a pipeline tee 2. An auger 4 is installed on the lower part of the supporting pipe, and a guide rod of circular cross-section 5 is attached to the lower end of the pipe 1. The axis of the rod coincides with the axis of the drill. The lower end of the rod is sharpened to a cone. Locknut 6 provides rigid fastening of rod 5 to pipe 1.

Between the outer ends of the cutting edges of the auger 7 and the upper points of the lower half-turns of the auger, metal housings of stationery knives 8 with replaceable 9 mm blades are installed, the axes of the housings are parallel to the axis of the drill. These knives are necessary for cutting roots along the walls of the well. The lower points of the housings 8 are attached to the outer ends of the cutting edges of the drill 7, and the remaining attachment points 9 of the housings 8 coincide with the points of contact of the knife bodies and the outer edges of the auger spirals.

To reduce the effort when drilling wells and eliminate the need to sharpen the cutting edges of the auger, 2 pieces of replaceable 19 mm trapezoidal blades for technical knives 10 are installed on the front surfaces of the auger. They are attached to the surfaces of the auger using four stapler staples 11 passing through holes 12 in the front surfaces of the auger in such a way that the cutting edges of the blades are ahead of its cutting edges 7 in the direction of rotation of the auger. When securing the blades 11, the ends of the brackets 11 are bent in the direction opposite to the direction of rotation of the drill, so that when drilling a well there are no forces that bend them.

The device works as follows. Before starting to drill a well, the blades of the knives 8 are extended from the housings by approximately half the pitch of the auger turns. (After finishing the work, to prevent accidental injuries, the blades must be pushed inside the housings.) Then the sharp end of the rod 5 is installed in the center of the cross cut, the sectors of the cut are tucked under the coating, the rod 5 and the protruding blades of the knives 8 are pressed into the ground. After this, the well is drilled in the usual way. The guide rod and the double-thrust design of the auger prevent the axis of the drill from deviating from the axis of the well, the blades of the knives 8 cut the roots along the walls of the well, the blades 10 reduce the effort when drilling the well.

Water is poured into planting wells 25-30 cm deep, then they are filled with compost or other nutrient composition and seedlings are planted. Loose and more nutritious soil inside the well creates conditions for root growth in the well and reduces competition between neighboring plants.

Approximate dimensions of the drill parts when the operator is working in a sitting position: pipe diameter 1 - 20 mm, length - 400 mm, auger diameter - 84 mm, rod diameter 5-6 mm, length - 140 mm.

The length of the drill can be increased by using a piece of pipe with a diameter of 20 mm with threads on the ends and a pipeline coupling. This drill can be used to drill holes for metal supports for trellises and fences.

Claims (1)

An auger drill for planting seedlings on a film covering, containing a supporting pipe, on the lower part of which an auger is installed, and a rotation handle is attached to the upper end, characterized in that the auger is made of two-thread, the upper end of a guide rod of round section is attached to the lower end of the supporting pipe, the lower the end of the rod is sharpened into a cone, the axis of the rod coincides with the axis of the drill, and between the outer edges of the cutting edges of the drill and the upper points of the lower half-turns of the auger, two stationery knives with metal bodies and replaceable 9 mm blades are installed, the lower points of the knife bodies are attached to the outer ends of the cutting edges of the auger , the axes of the housings are parallel to the axis of the drill, and the remaining points of attachment of the housings coincide with the points of contact of the knife bodies and the outer edges of the auger spirals; on the front edges of the auger there are two sections of replaceable 19 mm trapezoidal blades for technical knives; the sections are fastened to the surfaces of the auger using four staplers through holes in the front edges of the auger so that the cutting edges of the blades are ahead of its cutting edges as the auger rotates, and the lines connecting the upper and outer edges of the auger spirals are in the form of curved convex lines.

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