The tape is the same as the principle of selecting ordinary tape. The width of the tape is first determined by the load on its section, ie the hourly volume and operating speed. In addition, consideration should be given to factors such as maximum block size, hardness and density of the material. In order to ensure that the material does not slip or overflow when transported at a large dip angle, the design is to enclose the material between the two tapes and to have their edges adhere to each other, so the width of the two sides should be included in the calculation of the tape width.
When a multi-stage transportation system is used, a large radius of curvature leads to an increase in the amount of excavation work. The minimum radius of curvature of the vertical curve of the HAC machine can be calculated by calculation. The design must ensure that all points at the cross-section of the tape are not subject to bending or overstressing, the working conditions of the tape (transportability, lifting height, maximum inclination, etc.) and the material properties of the tape (allowing maximum working tension, elastic mode) Number, etc.).
The upper tape covered by the theoretical analysis of the upper and lower tape structure is also a traction belt, and runs at a synchronous speed with the lower tape. The advantages are as follows: Firstly, the material can be moved without any relative movement between the upper and lower tapes, thereby maximizing the effect of the pressing force and the friction force, and keeping the material from falling when the material is transported; second, the belt can be used as a traction belt to share part of the traction force. To reduce the force of the lower tape, it is also possible to use a lower strength tape or to increase the lifting height of the conveyor when the tape size is constant. Only in a few cases where the volume is small and the lifting height is not large, the single tape single pulling method is adopted.
The machine is driven by the upper and lower tapes. The upper belt is a 3-layer nylon fiber reinforced tape, and the lower belt is a 7-layer nylon fiber reinforced belt. If a single tape drive is used, it must be satisfied with high strength steel cord tape of ST400O or higher. Hard texture metallic ore, may be covered with a rubber layer outside the nylon core layer to enhance the abrasion resistance and the impact is buffered by the loading point ore induced by. Roller and Holder The carrier belt of the HAC machine is generally supported by a trough-shaped idler set consisting of three equal-length rolls. The groove angle of the roller set at the vertical curve is easy to adjust and can be gradually increased or decreased to obtain a smooth transition.
A V-shaped bracket consisting of two rollers is used on the straight section of the back tape, and a rubber buffer roller is usually used in the loading section. The eight rollers are divided into two rows, four rollers in each row are pressed along the full width of the tape, and the hinged balance bar structure is used in the lateral direction between the rollers, and a rotatable pressure is applied in the longitudinal direction between the front and rear rows. The rod balances the pressure along the length of the tape.
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