Hole cutting apparatus
FIELD: horticultural equipment, in particular, devices for cutting holes in soil for planting of agricultural and decorative flower crops.
SUBSTANCE: apparatus has pushing-out device, which may be withdrawn from soil during operation without applying of substantial muscular force by user. Apparatus is formed as ring made from pipe section and coil-type spring attached to ring with its lower coil. Ring is adapted for placing onto soil. Inner diameter of ring is equal to outer diameter of larger base of conical blade and inner diameter of spring exceeds outer diameter of said larger base. Upper coil of spring is attached to lower ends of carriers and lower and upper coils of spring are biased. Ratio of spring wire diameter to outer diameter of section of supporting ring is 0.35:0.44. Lower surfaces of blade cutting edge and supporting ring are lying in single plane.
EFFECT: provision for applying of minimal muscular force to apparatus by user and increased efficiency.
2 dwg
The invention relates to lawn and garden equipment, in particular for the formation of holes in the soil when planting agricultural and ornamental (flower) cultures.
Widely known various constructions of spades applied at planting agricultural and flower crops, and, in particular, hand hoe Zemlyakov NV [1].
However, their use in the work expended considerable muscular effort at relatively low productivity of labor.
It is also known tool for forming holes in the soil closest in technical essence to the proposed [2], however, it partially has the same disadvantages.
The purpose of the invention is the creation of such design tools for forming holes in the soil, which would ensure it is the minimum cost of the muscular effort of the user while maximizing productivity of his labor.
This objective is achieved in that the tool for forming holes in the soil containing the blade, in the form of a hollow truncated cone, the right shape, smaller base of which has a cutting edge, two holders of the same length, and symmetrically fixed on the outer diameter of the upper edge of the blade, the support bar for the feet of the user for insertion of the blade into the soil, etc is what strap is located between the tool holders on the distance from the top edge of the blade on the value of its height and is attached along the entire length of the bottom side of the strap wedge-shaped knife for cutting and removal of soil, recoverable when the gun is equipped with a buoyancy device to extract it from the soil in the process without the cost of a muscular effort of the user, which is performed in the form of made of pipe rings for bearing on the soil and attached to its lower cylindrical coil spring, and the inner diameter of the ring is, and the inner spring diameter greater than the outer diameter of the larger base of the cone blade, while the top turn of the spring is attached to the lower ends of the holders, and the lower and upper coils of the springs are tightened, moreover, the ratio of wire diameter of the spring to the outer cross-sectional diameter of the support ring is equal to 0.35:0,44, and the bottom surface of the cutting edge of the blade and anvil rings lie in the same plane.
1 shows a tool for forming holes in the soil, figure 2 - cross section A-a in figure 1.
The tool includes a blade 1, a holder 2, arm 3, the support bar 4 with a wedge-shaped knife 5, the pushing device comprising a supporting ring 6 and springs 7, attached Elektroprivreda 8 to the ring 6 and the tool holders 2.
Figure 1 is conventionally not shown a quarter of the blade 1, the support ring 6 and springs 7 for a more complete view of the design tools.
The proposed instrument is as follows.
In the initial position the instrument for its support what olicom 6 and the cutting edge of the blade 1 is placed on the soil perpendicular to its surface, the user then presses his foot on the support bar 4 and both hands on the handle 3, thereby ensuring that the introduction of the blade 1 in the soil to the full height of the blade 1 minus the sum of the sizes of the diameter of the supporting ring and the diameter of the compressed until it touches turns of the spring 7, and then through wound spring 7 without the use of muscular power user tool is extracted from the soil and, as previously, is set to a new place, where you need to do next hole, and so consistently performed above motion. After the introduction into the soil of the blade 1 to perform the second hole, the soil is first hole is ejected from the blade 1 second soil pit and meeting with wedge-shaped blade of the knife 5, is cut into two parts and is removed away from the guns. The described sequence of operation is performed on all treated areas of soil.
Manufacturing and pilot operation of instruments proposed design is fully ensured the achievement of the objectives of the invention.
Sources of information:
1. USSR author's certificate N 1256703, class. And 01 1/00, 1986.
2. RF patent N 2198486, class. And 01 1/00, 2003.
A tool for forming holes in the soil containing the blade in the form of a hollow truncated cone, the right shape, smaller base of which is R. the driving edge, two holders of the same length, and symmetrically fixed on the outer diameter of the upper edge of the blade, the support bar for the feet of the user for the introduction of the blade in the soil, and the strap is located between the tool holders on the distance from the top edge of the blade on the value of its height and is attached along the entire length of the bottom side of the strap wedge-shaped knife for cutting and removal of soil extracted during operation of the gun, wherein the gun is equipped with a buoyancy device to extract it from the soil in the process without the cost of a muscular effort of the user, which is performed in the form of made of a pipe ring, for bearing on the soil and attached to its lower cylindrical coil spring, and the inner diameter of the ring is, and the inner spring diameter greater than the outer diameter of the larger base of the cone blade, while the top turn of the spring is attached to the lower ends of the holders, and the lower and upper coils of the springs are tightened, moreover, the ratio of wire diameter of the spring to the outer cross-sectional diameter of the support ring is equal to 0.35:0,44, and the bottom surface of the cutting edge of the blade and anvil rings lie in the same plane.