RU209646U1 - DEVICE FOR CUTTING SHRUBS AND SUBSHRUBS - Google Patents

Abstract

The utility model relates to agriculture and forestry and can be used for clearing areas from bushes and shrubs. The technical result of the utility model is to reduce energy consumption while improving the quality of work and the maximum allowable diameter of the stems of cut shrubs and trunks of young tree shoots. The technical result is achieved due to the fact that each blade has slit-like slots of rectangular cross-section along the entire length in the front and rear planes, connected from the peripheral end of the blade with cavities into which sprockets are inserted, freely rotating on vertical axes, fixed in blades with longitudinal screw devices. movement in elongated holes, and from the inner end of the blades with cavities into which sprockets are inserted, having hubs inserted into bearings pressed into the blades, driven by the blades fixed on the surface and driven from the hydraulic system of the power tool by hydraulic motors, the cutting devices are an endless chain with cutting, guiding and connecting elements, similar to the chainsaw chain, dressed on sprockets and tucked with their guide elements into the slot-like grooves of the blades. A device for cutting shrubs and semi-shrubs, comprising a frame with two blades located at an angle of 60°, on the lower edges of which knife cutting devices are mounted, each blade having along its entire length in the front and rear planes slit-like grooves of rectangular section, from the peripheral end of the blade connected with cavities into which sprockets are inserted, freely rotating on vertical axes, fixed in blades with screw devices for longitudinal movement in oblong holes, and from the inner end of the blades with cavities into which sprockets are inserted, having hubs inserted into the bearings pressed into the blades, having a drive from blades fixed on the surface and hydraulic motors driven from the hydraulic system of the power tool, the cutting devices are an endless chain with cutting, guiding and connecting elements, similar to the chainsaw chain, dressed on sprockets and filled with their guide elements in sh eloid grooves of dumps.

Description

The utility model relates to agriculture and forestry and can be used for clearing areas from bushes and shrubs.

A device for cutting shrubs and shrubs [Author's certificate RU patent No. 2151491, IPC class. A01G 23/02, A01G 23/06, A01G 23/08, A01G 23/087, 2000], containing a frame with two blades located at an angle of 60 °, on the lower edges of which knives are mounted, made in the form of a stepped shape, and the cutting edges knives are located at an angle to the perpendicular to the direction of movement of the device, equal to the angle of friction of wood on steel.

The disadvantage of this device is the high energy consumption, insufficiently high quality of work and the limitation on the maximum allowable diameter of the stems of cut shrubs and trunks of young tree shoots.

The closest analogue to the claimed is a device for cutting shrubs and shrubs [Author's certificate RU patent No. 141131, IPC class. A01G 23/00, 2014], containing a frame with two blades located at an angle of 60°, on the lower edges of which a knife cutting device is mounted.

The execution in this design of the cutting device in the form of a number of individual teeth, bolted directly to the blade, makes it possible to simplify the repair of the structure and reduce the time for maintenance of the device. However, such shortcomings as high energy intensity, insufficiently high quality of work and limitation on the maximum allowable diameter of stems of cut shrubs and trunks of young tree shoots remain. The speed of movement of passive teeth relative to the cut objects during the cutting process in this design is low, and the slip coefficient is not high, which does not reduce the energy intensity of cutting, causes crushing of plants, pressing them into the soil with slipping under the working body or uprooting.

The technical result of the utility model is to reduce energy consumption while improving the quality of work and the maximum allowable diameter of the stems of cut shrubs and trunks of young tree shoots.

The technical result is achieved due to the fact that each blade has slit-like slots of rectangular cross-section along the entire length in the front and rear planes, connected from the peripheral end of the blade with cavities into which sprockets are inserted, freely rotating on vertical axes, fixed in blades with longitudinal screw devices. movement in elongated holes, and from the inner end of the blades with cavities into which sprockets are inserted, having hubs inserted into bearings pressed into the blades, driven by blades fixed on the surface and driven from the hydraulic system of the power tool by hydraulic motors, the cutting devices are an endless chain with cutting, guiding and connecting elements, similar to the chainsaw chain, dressed on sprockets and tucked with their guide elements into the slot-like grooves of the blades.

The specified set of essential features ensures the appearance of the proposed device for cutting shrubs and subshrubs of new properties that are different from the prototype.

Thus, the claimed features of the utility model meet the criterion of "novelty".

In FIG. 1 shows a diagram of a device for cutting shrubs and semi-shrubs, top view, in Fig. 2 - section A-A in Fig. one.

A device for cutting shrubs and semi-shrubs, containing a frame 23 with two blades 22, 24 located at an angle of 60°, on the lower edges of which knife cutting devices are mounted, each blade having slot-like grooves 21, 25 of rectangular section along its entire length in the front and rear planes , from the peripheral end of the blade, connected with cavities 3, 20, into which sprockets 1, 19 are inserted, freely rotating on vertical axes 2, 18, fixed in blades 22, 24, with screw devices for longitudinal movement 16, 26 in oblong holes 17, 27 , and from the inner end of the dumps with cavities 7, 12, into which sprockets 8, 10 are inserted, having hubs inserted into bearings pressed into the dumps 22, 24, having a drive from the dumps fixed on the surface and driven from the hydraulic system of the power tool by hydraulic motors 9, 11 , cutting devices are an endless chain with cutting 4, 13, guides 5, 15 and connecting 6, 14 elements, a similar chainsaw chain, dressed on sprockets 10, 19 and 1, 8 and filled with their guide elements in the slot-like grooves 21, 25 of the dumps.

The operation of the device for cutting shrubs and semi-shrubs is carried out as follows.

The device is hung on the front attachment of the power tool. Hydraulic motors 9, 11 are connected by hoses to the hydraulic system of the power tool, not shown. Before the working movement, the device is lowered until the dumps 22, 24 come into contact with the soil, the handle of the hydraulic distributor of the power tool is set to the “floating” position, the drive of the hydraulic motors 9, 11 and the working gear are switched on.

During the movement, the hydraulic motors 9, 11 drive the chains of cutting devices with a relative speed that is much higher than the forward speed of the unit. This results in a high cutting speed. The drive power and the rotational speed of the shaft of the hydraulic motors 9, 11 are designed so as to ensure the possible speed of cutting the trunks of shoots of young trees in the direction of movement of the unit, which is 1.1 ... 1.2 times higher than the speed of the unit itself. When meeting with a stalk of semi-shrubs of small diameter, it is cut by one cutting element. Due to the high cutting speed, a clean cut occurs without crushing the plants, pressing them into the soil with slipping under the working body or uprooting.

When meeting with the trunk of a young shoot of a tree, due to the high speed of the chain, a plurality of cutting elements 4 or 13 are sequentially involved in cutting it. trees in the direction of movement of the unit, 1.1 ... 1.2 times the speed of the movement of the unit itself, prevents breakage of dumps.

To remove, put on or optimally tension the chain of knife cutting devices, screw devices 16, 25 for the longitudinal movement of sprockets 1, 19 are used.

Thus, the claimed technical result is achieved.

Sources of information

1. Author's certificate RU patent No. 2151491, IPC class. A01G 23/02, A01G 23/06, A01G 23/08, A01G 23/087, 2000.

2. Author's certificate RU patent No. 141131, IPC class. A01G 23/00, 2014.

Claims (1)

A device for cutting bushes and semi-shrubs, containing a frame with two blades located at an angle of 60°, on the lower edges of which knife cutting devices are mounted, characterized in that each blade has slot-like grooves of rectangular section along its entire length in the front and rear planes, from the peripheral end dumps connected with cavities into which sprockets are inserted, freely rotating on vertical axes fixed in dumps, with screw devices for longitudinal movement in oblong holes, and from the inner end of the dumps with cavities into which sprockets are inserted, having hubs inserted into pressed into dumps bearings driven by blades fixed on the surface and hydraulic motors driven by the hydraulic power system, cutting devices are an endless chain with cutting, guiding and connecting elements, similar to a chainsaw chain, dressed on sprockets and refueled with their guides and elements into the slot-like grooves of the dumps.

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