Tension device for belt conveyer

Abstract

The invention discloses a tension device for a belt conveyer, which comprises a movable bracket which is suitable for mounting a turnabout drum of the belt conveyer, fixed base frames which are fixedly arranged behind and on two sides of the movable bracket, a first reversing pulley and a second reversing pulley which are arranged on the fixed base frames horizontally along the axial line and positioned on two sides of the movable bracket respectively, a first movable pulley which is arranged on the back end face of the movable bracket vertically along the axial line, a first fixed pulley anda second fixed pulley which are arranged on the fixed base frames vertically along the axial line respectively, and a rope, of which a first end is connected with a balance weight and a second end rounds over the first reversing pulley, the first fixed pulley, the first movable pulley, the second fixed pulley and the second reversing pulley and then is connected with the balance weight. The tension device has the advantages of small space, large and stable tension range, and simple structure.

Description

technical field [0001] The invention relates to a tensioning device for a belt conveyor, in particular to a tensioning device for a belt conveyor which can reduce the space required for installation, has a large and stable tension range and a simple structure. Background technique [0002] Belt conveyors are widely used in mining, metallurgy and other fields. The tensioning device is an important part of the belt conveyor. The tensioning device is used to ensure sufficient tension of the conveyor belt, and to ensure sufficient friction between the drive rollers during the startup, braking, and normal operation of the conveyor. Prevent slipping etc. In addition, the sag of the conveyor belt is limited to prevent material from falling off the conveyor belt. [0003] Usually the form of the tensioning device is a screw tensioning device, a vertical weight tensioning device, etc. These tensioning devices have their limitations. For example, the screw tensioning device is onl...

AI Technical Summary

Problems solved by technology

[0005] However, in the above-mentioned patent application, since a hydraulic cylinder is used to generate tension, the range of tension is small and large tension cannot be generated.

For example, in mining, the force of the material in the intermediate silo on the conveyor belt can reach tens to tens of tons. Therefore, the required tension cannot be generated with a hydraulic cylinder.

In addition, under poor working conditions, such as an environment with a lot of dust, the components of the hydraulic system are prone to failure

At the same time, the control of the hydraulic system is very complicated, the tension adjustment is complicated, and the tension is unstable, which leads to the complex structure of the entire tension device, which leads to increased costs and high failure rates

[0006] Secondly, for the use of hydraulic cylinders and hydraulic valves, the strength of hydraulic cylinders such as pistons is required to be very large. A failure of a hydraulic valve may cause the entire tensioning device to fail to generate tension. Therefore, the reliability of hydraulic cylinders and hydraulic valves is very high. High, high production cost, frequent maintenance

[0007] In addition, the hydraulic system used in the above patent application requires a separate hydraulic station. During the operation of the conveyor, the hydraulic system needs to work all the time, so the cost is high

Moreover, the hydraulic station requires a lot of space to be set behind the conveyor, which leads to the entire tensioning device occupying a very large space

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