SU1650039A1 - Scissors for cutting plant stems - Google Patents

Abstract

The invention relates to a technique for harvesting agricultural crops and is intended for cutting round stalks of small diameter, mainly the stalks of bunches of grapes. The purpose of the invention is to increase productivity and simplify the design. The scissors contain a handle with a spring-loaded stem installed in it, on which knives with hinged ends are rounded. The knives are equipped with means for breeding them in the form of springs and means for mixing them in the form of supporting surfaces interacting with the knives mounted on an element rigidly connected to the handle, and reducing the knives during relative movement of the rod and the impact on the blade at the point of their connection being cut off stalk. In this case, the thrust surfaces interact with the blades through the sides of the blades, the working area of the blades is located between the knife hinge and the thrust knives, which restrain the knives, and the spring-loaded stem returns the knives to their original open position at the moment of cutting the stem. On one blade of the knife there is a notch fixing the stem in the knife solution. 4 il.

Description

The invention relates to a technique for harvesting agricultural crops and is intended for cutting round stalks of small diameter, mainly the stalks of bunches of grapes.

The purpose of the invention is to increase productivity and simplify the design.

Figure 1 is a diagram of scissors for cutting fruits; figure 2 - section aa in figure 1; on fig.Z - section BB in figure 1; figure 4 - section bb In figure 2.

Two knives 1 are pivotally mounted on axis 2 in a fork 3 of the stem consisting of a fork and a rod 4 rigidly connected with it. Between the cheeks of the fork 3 and the knives 1, a washer 5 is installed on one side and a torsion spring coil 6 on the other side which is threaded into the holes 7 of the knives 1. A cap 8 is put on the rod 4 of the stem, into which the screw spring 9 rests at one end, the other end of the spring 9 rests on the washer 10 rigidly mounted in the hollow handle 11 with the help of the spacer 12 and the stopper 13. At the end of the rod 4 is threaded and installed nuts 14 and washer 15 for limiting the magnitude of the stroke.

The knives are mounted on supporting elements 16 formed by the bottom edge of the groove 17. The supporting elements 16 are rigidly connected to the handle 11 and are in contact with the surfaces of the knives located opposite the blades, wherein the area

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the intersection of the blades of the knives is located between the supporting elements 16 and the spine of the hinge. Between the supporting elements 16 in the housing there is a longitudinal groove 18, which allows unrestricted movement of the object being cut along with the knives 1.

The ends of 19 knives from the side opposite to the working area should be bent so that they do not rest against the body when the skin opens to its original position before cutting.

In order to fix the object of cutting in the knife solution, a semicircular recess 20 is made at one of the blades near the top of the angle between them.

Scissors work as follows.

Scissors with diluted blades lead to the peduncle and press on it. At the expense of resistance, the peduncle pushes the blades together with the spring-loaded stem in the direction of the handle. In contact with the supporting elements 16, the knives are buried in the housing, and the angle between them is constantly reduced until the time of the cut. Spring-loaded stem, the throttle body together with the knives, compresses

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the coil spring 9 and at the same time the torsion spring 6 is compressed by the knives.

At the moment of cutting the stalk, as soon as it ceases to resist, the knives are thrown into the starting position. The stroke of the knives is determined by the position of the washer 15 on the rod 4.

Claims (1)

Formula of Invention Scissors for cutting plant stalks containing a handle in which a spring-loaded stem is installed, associated with hinged knives, equipped with a means for their dilution and contacting with supporting elements of the handle, in order to reduce operator fatigue and simplify the design , the supporting elements are in contact with the surfaces of the knives located opposite the blades, while the blade crossing zone is located between the supporting elements and the hinge axis, and between the supporting elements in p This is a groove for placing the stem to be cut. Aa Fy fig 2 Fy