RU35834U1 - Shearer Executive Body of the Combine Harvester - Google Patents

Description

2003126676

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SCREW EXECUTIVE BODY OF THE CLEANER

The screw executive body of the shearer is designed to destroy the coal mass and load it onto the conveyor.

The executive bodies of combines are known (see The driver of mining excavation machines, A.A. Toporkov. M., Nedra, 1991, p. 192), containing a housing with a hub, a set of mortise fists with cutters and a cover. The disadvantages of this design is that the arrangement of mortise fists with incisors requires an increased step of their location along the blades and frontal, which reduces the destruction efficiency of the coal mass, and the flat design of the frontal side increases the specific energy consumption during notching and cleaning recess, since the friction of the executive body on the bottomhole surface occurs along the entire plane of the forehead, while the cover located at a small distance from the surface of the face intensively wears out.

A screw executive body of a shearer is also known (see JSfe 21063 Utility Model Certificate for Application No. 2001116067), comprising a screw housing with a centering cylindrical bore and a square hole associated with it for accommodating a stepped slotted sleeve. The disadvantages of this design are the same as ordered above.

The essence of the utility model: expanding the range of regulation of cutting lines by reducing the pitch of the fists with cutters, reducing the specific energy consumption during notching and cleaning recess and increasing the life of the cutters.

The utility model is dry by the fact that the screw executive body of the shearer contains a spline sleeve, a cover and a housing including a shell, a hub, a forehead, blades and false fists with cutters mounted along the perimeters of the forehead and blades with a reduced pitch; in this case, the lobovin is made in the form of a truncated cone with a drill of a larger diameter towards the bottom, the dimensions of the windows radially located on the front of the windows are larger than the maximum size of the pieces of the destroyed coal mass, the cover of the scutellum is recessed from the bottom plane by an amount greater than the maximum thickness of the pieces of the destroyed coal mass, and the end docking of the fist body, replaceable sleeve and cutter is made in the form of a labyrinth seal.

A useful model of a screw executive body is illustrated by drawings, where Fig. 1 shows an axial section of a screw; figure 2 is a view of figure 1; on figs - section BB in fig. 1.

The auger actuator consists of the following main components and parts: a spigot sleeve 1 (Fig. 1), a cover 2 and a housing including a forehead 4, a shell 6, blades 7, a hub 9, and overhead fists 8 (Figs. 1 and 2) with cutters 11 (figure 2).

rotates with simultaneous translational movement of the harvester along the racks of the scraper conveyor. When cutting and clearing coal, the cutters 11 (Fig. 2) installed in overhead fists 8 (Fig. 1 and 2) located along the perimeters of the forehead 4 (Fig. 1) and blades 7, destroy the coal mass along the cutting lines, while , the use of overhead fists allows, due to the reduction of the pitch of their arrangement, to expand the range of regulation of cutting lines (based on the geological conditions of the coal seam), which cannot be done using mortise fists. The execution of the fronted shell in the form of a truncated cone allows to reduce energy consumption during the notch and the cleaning recess, since the shell 6 (Fig. 1) with the cover 2 is recessed to a greater distance from the bottom surface than for flat-sided screws, and it also reduces the intensity of the cover wear. Windows 5 (FIGS. 1 and 2) allow pieces of coal crushed along the face to fall onto the blade and loaded onto the conveyor, while performing the end fitting of the fist body 8 (FIGS. 1, 2 and 3), replaceable sleeve 12 (FIG. 3), and the cutter 11 in the form of a labyrinth seal 10 allows to reduce the degree of pinching of the gap between the sleeve and the shank of the cutter, thereby ensuring constant rotation and self-sharpening of the cutter during cutting and prolonging its service life.

Thus, a screw executive body made according to the inventive utility model allows to expand the range of regulation of cutting lines, reduce energy consumption during notching and cleaning recess and increase the service life of the cutters.

The proposed utility model of a screw-type executive body is missing safety review, industrial tests and is recommended by the Gosgortekhnadzor of Russia for mass production (Resolution No. РРС 04-7112 of 12.11.02).

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Claims (4)

1. The screw executive body of the shearer comprising a splined sleeve, a cover and a casing consisting of a forearm, blades, a shell, a hub and an overhead fist with incisors, characterized in that the installation of overhead fists with incisors along the perimeters of the forehead and vanes is performed with a reduced pitch. 2. The screw executive body according to claim 1, characterized in that the lobovina is made in the form of a truncated cone with a larger diameter towards the bottom, and the dimensions of the windows radially located on the lobovina are larger than the maximum size of the pieces of the destroyed coal mass. 3. The screw executive body according to claim 1, characterized in that the screw cover is recessed from the face plane by an amount greater than the maximum thickness of the pieces of the destroyed coal mass. 4. The screw executive body according to claim 1, characterized in that the end-coupling of the fist body, replaceable sleeve and cutter is made in the form of a labyrinth seal.