SU952697A1 - Block of driving sprockets for conveyers with chain traction member - Google Patents

Description

one

The invention relates to a scraper conveyor, in particular, to the design of a drive sprocket unit for conveyors with a chain linkage.

The closest to the invention to the technical essence and the achieved result is a block of drive sprockets for conveyors with a chain linkage body, consisting of a drum, two sprockets, each of which is independently mounted on a cantilever half mounted on the side of the drive frame, and power pins, diametrically located between the ends of the stars and the drum 1.

A disadvantage of the known device is that it does not provide a rigid power connection between the sides of the drive frame at the installation site of the drive sprocket unit, therefore under the influence of the thrust forces arising during the transportation of cargo, especially large-sized pieces of rock mass, the sidewall TC in the direction of the action of the spacer forces and deformed. This increases the distance between the sprockets, which must be equal to the calculated distance between the chains, the engagement of the sprockets with the chains is broken, the drum falls out, the sprocket teeth break, the whole drive fails. This is because the drive frame providing strength and rigidity, sheets welded between sidewalls or other rigid connections between these sidewalls cannot be installed at the location of the drive sprocket unit, so the sidewalls are not connected to each other and are located console.

ten

This disadvantage is aggravated by the continuous growth of installed capacities on conveyor drives, since this proportionally increases the power of the thrust force and, accordingly, the expansion forces increase, the length of the console of the loose ends of the sidewalls relative to the sheets increases.

The aim of the invention is to increase the reliability and durability of the drive sprocket unit by providing a rigid force connection between the sidewalls.

Claims (2)

This goal is achieved by the fact that in the drive sprocket unit for conveyors with a chain pulling device consisting of a drum, two stars, each of which is independently mounted on a cantilever half-wheel mounted on the side of the drive frame, and power splines diametrically located between the ends of the stars and the drum, the drum is made in the form of split axle couplings with protrusions, and the hubs of the stars are made with annular grooves to accommodate the protrusions of the coupling halves. FIG. 1 shows a block diagram of the drive sprockets on the scraper conveyor drive frame; in fig. 2 - the proposed device, a general view; in fig. 3 shows section A-A in FIG. 2. The drive sprocket unit for conveyors with a chain linkage body is arranged as follows. On the semi-shafts 1, fixed on the sidewalls 2, the drive frames are mounted and fixed with the help of washers 3 and bolts 4, independently of one another, integral drive sprockets 5 with diametral grooves 6 in the front part of the hubs for power springs 7. On the outer surface of the hubs of the asterisks are closed perimeter of the hubs are annular grooves (grooves) 8. Between the sprockets there is a split axially disposed drum consisting of coupling halves 9 interconnected by fasteners 10. In the end parts of the drum there are diametrical grooves 11 for power drills 7. On the inner surfaces of the drum half coupling there are annular protrusions closed around the inner perimeter of the drum 12. Between the ends of the sprockets 5 and the drum consisting of the half couplings 9, diameters 6 and 11 are made at the ends of the sprockets and the drum, and have power pins 7 having protrusions 13, with the help of which they are fixed (from falling out of slots 6 and 11) on the internal cavity 14 sprockets 5. The assembly of the drive sprocket unit is carried out in the following order. Solid sprockets 1 mounted on the side frames 2 of the drive half are put on one-piece sprockets 5, which are then fixed on the half-bins by thrust washers 3 and bolts 4, maintaining the distance S between the sprockets' axes. In the diametrical grooves 6 on the end of the hubs of the sprockets, the power arms 7 are fixed, fixing them from moving along the groove by the projections 13, which are inserted into the cylindrical hole of the sprockets 5. Turning the sprockets around their own axis to the position at which the power tongs 7 are parallel to each other, the half coupling 9, putting their diametrical grooves 11 on the power keys 7 so that the annular projections 12 on the inner surfaces of the half couplings 9 fit into the annular grooves (grooves) 8 on the outer surfaces of the hubs vezdochek 5. Thereafter, the coupling halves 9 are combined and secured together by fasteners 10 (e.g., bolts and nuts samotormoz schimis). The use of the invention on scraper conveyors operating in underground conditions, for example, in the coal industry, will give a significant national effect, as it allows, without increasing the metal intensity of the conveyor drive frames, to increase their strength and rigidity and, consequently, the reliability and durability of the drives in approximately 1 , 5 times, and eliminate downtime due to the failure of the downhole scraper conveyor due to the deformation and the “separation of the sides of the drive frame during transport (pulling) between the sides us material, especially large pieces of rock. Claims The drive sprocket unit for conveyors with a chain linkage body consisting of a drum, two stars, each independently mounted on a cantilever half-wheel mounted on the side of the drive frame, and power keys diametrically located between the ends of the sprockets and the drum, differing in that, in order to increase the reliability and durability of the drive sprocket unit by providing a rigid power connection between the sidewalls, the drum is made in the form of split axle couplings with protrusions, and Stars pizza made with annular grooves for receiving therein the projections of the coupling halves. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 280308, cl. B 65 G 23/00, 1967 (prototype).