Semicircular belt conveyor with deep groove and big dig

Abstract

A belt conveyer with deep semi-circular channel and big inclination up to 40 deg is composed of a machine frame, a drum group, a group of supporting rollers including central supporting rollers and side supporting rollers for rolling the conveying belt to become a deep semi-circular channel, a conveying patterned rubber belt, a carriage-type tension unit for the pull drum, and cleaning unit with brush and vibration cleaner.

Description

technical field [0001] The invention relates to a bulk material conveying device, in particular to a semicircular deep groove large-inclination belt conveyor suitable for downhill coal mining and main inclined shaft lifting in coal mines. Background technique [0002] At present, the idler rollers of ordinary belt conveyors are trough-shaped idler groups composed of three equal-length rollers. shape. When ordinary belt conveyors transport bulk materials, the maximum conveying inclination angle is 18°. For the working conditions with high lifting height and large conveying inclination angle, if the ordinary belt conveyor is still used, the method of increasing the length of the conveyor must be used to realize material conveying. This will not only increase the manufacturing cost and maintenance cost of the equipment, but also increase the floor space of the equipment and increase the investment in civil engineering. If a corrugated sidewall belt conveyor is used, although...

AI Technical Summary

Problems solved by technology

When the five-roller deep groove idler group is used, because the horizontal installation of the middle flat idler bears a large load, it is necessary to increase the shaft diameter of the idler shaft when designing the flat idler, and the parts that match the shaft The types of bearings and seals are also increased accordingly. This non-standard design increases the specifications of special parts for idlers, resulting in poor interchangeability, troublesome maintenance, and increased costs. In addition, the intermediate flat idlers bear large loads. , the damage is also faster, affecting the service life of the entire idler group

In addition, the bottom of the idler roller group is flat, and the friction between the conveyor belt and the material is small, which also limits the conveying inclination angle of this belt conveyor.

Although the four-roller U-shaped deep groove idler set has solved the shortcomings of the five-roller deep groove idler set to a certain extent, such as short service life, high cost, and limited conveying inclination angle, but because it makes the conveyor belt convey The section of the material is U-shaped, and the load on the two short rollers in the middle is larger than that on the two long rollers on the outside. The force on the four rollers is uneven, and the damage of the roller parts is different. At the same time, it also causes inconsistent wear between the conveyor belt and the short idler and long idler; in addition, the conveyor belt has a U-shaped section, and the bending curvature of each stress point of the conveyor belt is different, and the curvature of the bottom of the U-shaped section is large. The central part of the belt is prone to fatigue damage, which will affect the service life of the conveyor belt, reduce the performance of the whole machine and increase the maintenance cost, and in serious cases will endanger the production safety of the entire system

Existing car type tensioning device basically adopts three kinds of forms, and a kind of is the weight hanging type (such as Figure 8 shown), one is heavy hammer tower type (such as Figure 9 shown), the other adopts the hydraulic tensioning form (not shown), the first two car-type tensioning devices need a higher space to meet the requirements of the tensioning stroke, and the hydraulic tensioning form can save tensioning space, but the hydraulic system is more expensive and difficult to maintain

Images