SU1765076A1 - Shaft-sprocket for conveyor - Google Patents

Abstract

Usage: in drives of endless conveyors intended for uniform dispensing of bulk lump materials from receiving bins to large primary crushing crushers. SUMMARY OF THE INVENTION: The sprocket shaft for conveyors has a faceted shaft surface and teeth rims located along it. Increased reliability and durability is ensured by the fact that the number of teeth located along each face of the shaft surface is 1.5–2 times less than the number of crowns, while the teeth in the crown located at one end of the shaft are offset from the teeth of the crown located at the other end shaft, on a circle on one side of the shaft. 4 il. Yo

Description

The invention relates to transport devices, and more specifically to drives for endless conveyors, intended to evenly dispense bulk lump materials (ore or other minerals) from receiving bins to large primary crushing crushers.

A known drive sprocket interacts with traction endless chains consisting of a large number of hinge links rigidly connected to the working web of the plate conveyor.

The disadvantage of such an asterisk is its insufficient strength and rigidity for use in drives of conveyors of the mining industry.

The closest in technical essence is an asterisk shaft, including

the cut surface of the shaft and the teeth crowns located along it.

The sprocket has six faces, on which teeth are located along the length with displacement relative to each other on each face, with four teeth on one face, and two teeth on the next, i.e. the number of teeth on the grain is not the same. As a result, there is an uneven distribution of pulling force on the teeth and, as a result, excessive wear of the teeth is observed on the faces with fewer teeth. This reduces reliability and durability.

The uneven number of teeth on the facets causes the asymmetry of the load transfer circuit from the teeth of the sprocket shaft to the elements of the working plate plate

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of the conveyor, which causes a distortion of the web and the destruction of its individual links

The purpose of the invention is to increase reliability and durability.

The goal is achieved by the fact that in the sprocket shaft for conveyors, which includes the cut surface of the shaft and the teeth crowns along it, the number of teeth located along each side of the shaft surface is 1.5–2 times smaller than the number of crowns, at one end of the shaft, offset relative to the teeth of the crown, located at the other end of the shaft circumferentially on one side of the shaft

It was established by experiments that if the number of teeth located along each face of the shaft surface is less than 1.5 times or more than 2 times the number of crowns, in that and in the other case the number of teeth along the length of each face becomes different. symmetry is violated in the scheme of transferring the load from the sprocket shaft teeth to the elements of the working conveyor belt and consequently, excessive wear of the sprocket shaft teeth on the faces with their smaller quantity is observed, which leads to a decrease in reliability and durability of the star shaft glasses

FIG. 1 shows the sprocket for conveyors, general view; FIG. 2 shows a plate conveyor with the proposed sprocket shaft; Fig. 3 shows the node I in Fig. 2 in Fig. 4; the diagram of the interaction of the sprocket shaft with the links of the working blade of the plate conveyor;

The sprocket has a faceted surface, for example, six faces 1, and teeth crowns along it. The number of teeth 2 located along each side of the surface shaft is less than 1.5-2 times the number of crowns. The tooth 2 in the crown located at one end of the shaft, 2 crowns are shifted relative to the teeth,

on the other end of the shaft, circumferentially on one side of the shaft.

The sprocket is used in the drive of a plate conveyor consisting of frame 3, sprocket drive shaft 4, idle shaft 5, which is also an element of the tensioning device, upper 6 and lower 7 support rollers, vertically closed working blade 8.

From the drive sprocket 4, the vertically closed working web 8 moves and transports coarse bulk material, such as ore, from the receiving hopper to the crusher. In this case, the tooth 2, located on one side of the sprocket 4, interacts with links 8 and 9 s eyelets 10, in which holes 11 are made under axis 12, connecting links 8 and 9 between them

Due to the uniform number of teeth on each face, their uniform wear is observed, reliability and durability are increased. This ensures uniform loads on the axle 12, as a result of which the possibility of web skewing from interaction with the sprocket is excluded and, consequently, the destruction of individual parts of the working belt of the conveyor, as a result of which the reliability and durability of the conveyor is also increased

Claims (1)

Invention Formula Shaft sprocket for conveyors, including a faceted shaft surface and teeth crowns located along it, characterized in that in order to increase reliability and durability, the number of teeth in the crowns located along each side of the shaft surface is 1.5-2 times smaller than the number of crowns while the teeth in the crown, located at one end of the shaft, are offset relative to the teeth of the crown, located at the other end of the shaft, circumferentially on one side of the shaft Fig / 10IIB FIG $ ; i. „Jjtrb. „I.-xiurv -1 -. -o., "l j. .--- - -rt. v -. “- Fig-u