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Qingyuan Belt Conveyor
Detailed Introduction
Qingyuan Belt Conveyor
It is also known as the belt conveyor belt conveyor. It is a machine that transports various materials by the continuous movement of tape. It can transport bulk materials such as raw coal, ore, sand, cement, flour, etc. It can also transport individual items such as sacking equipment.
Qingyuan belt conveyor
has the following advantages
(A simple structure, only a few major components such as the belt support roller drive device. At the same time, except for the belt, all small and medium-sized enterprises can make their own components. .The length of the belt structure can also be long or short, which should be determined according to the size and weight of your materials and products.
[Easy to use and can be installed and used in various places in the open air or underground. Safe to operate.
> (Third, it is easy to maintain. Only the rollers need regular maintenance. The tape has a long service life and little wear.
(Four, large transportation volume and small power consumption. Only the tape and materials are dragged. The moving parts only need to overcome the Compared with other conveyors, the frictional resistance of rollers and belts consumes less power when transporting the same goods. At the same time, due to continuous movement, the transportation volume is large, and the transportation slope is also larger than that of cars and roads.
( 5. Saving manpower. Due to the simple operation and easy maintenance, fewer management personnel are required. Generally, only one operator and one maintenance worker are needed for a pulley. At the same time, it is also easy to implement centralized operations and automatic protection.
(6 Freight is low. Due to low power consumption, large volume transportation, and fewer management personnel, unit freight is cheaper. In recent years, it has developed in the direction of long-distance, large-volume, and high-speed transportation. The advantage of low freight is more prominent. Single-belt assembly line transportation The machine is kilometers long and can transport tons of ore per hour. Norfolk Port in the United States uses a belt conveyor to load tons of coal per hour.
But things are always divided into two. It also has the following shortcomings
(First, the cost of the tape is high, such as glue and nylon cloth, etc. are relatively expensive, and the initial investment is large. The price of the belt accounts for about half of the total investment (Second, when the powder is transported upward, it generally cannot be crossed Even if the above angle correction measures are taken, the inclination angle cannot be exceeded. When the inclination angle is within the inclination angle, the economic effect of the belt assembly line is most significant.
Driving principle of Qingyuan belt conveyor
Qingyuan belt conveyor
Qingyuan belt conveyor< br/>The belt can move because the pulling force transmitted to it by the driving roller is used to overcome various resistances it encounters during movement. This pulling force is generated by the conveyor belt being close to the surface of the driving roller with sufficient pressure. , so that the friction between the tape and the roller transfers the circumferential force of the transmission roller to the tape, causing the pulling force and resistance to act on the belt at the same time, resulting in the internal force of the tape elongation, which is called tension. The tension changes along the direction of the tape transportation, so each point is subjected to Tension is not mutually exclusive. The design and calculation of the belt conveyor is based on the calculation of the tension. In other words, it is the calculation of the circumferential force and movement resistance of the transmission roller.
Obviously, in order to ensure that the belt is in the transmission The tension at the entry point of the non-slip transmission roller on the roller is greater than the tension at the abandonment point. The difference between the two is the circumferential force, which is the tension of the conveyor belt. This tension should be greater than the running resistance of the belt, so the efficiency of the transmission roller The mounting system margin and wrapping angle should be large. The relationship between the tension and the friction system wrapping angle of the transmission roller
Structure and manufacturing of Qingyuan belt conveyor
The quality of the conveyor belt determines the quality of the assembly line The performance is good or bad, so the conveyor belt should be selected well.
Currently, countries around the world are committed to research on the quality of conveyor belts to improve strength, bending fatigue resistance and impact resistance. The types of tapes that have been trial-produced and officially produced in my country include wire rope core tapes, nylon tapes, vinylon tapes, rayon tapes, cotton canvas tapes, plastic tapes and plastic rubber tapes. The first few are not produced in large quantities, while the latter ones have been produced in large quantities. Nowadays, all major enterprises can produce plastic tape, and the cotton sail tape has created conditions for the large-scale promotion of belt conveyors in our country
Qingyuan Belt Conveyor
The reasons for belt slippage are many and common, including the following
br /> (The initial tension is too small and not enough, causing the belt to slip. This situation usually occurs at startup. The solution is to adjust the tightening device and increase the initial tension.
(The two rollers are the same as the belt. Insufficient friction causes slipping. Most of the reasons are that there is moisture on the tape, or the ground is too humid. You can add some rosin powder on the roller. But be careful not to throw by hand, but use insulating equipment (such as Pihu compressed air spray) To avoid personal accidents, stop the production and check whether the distance between the belt and the roller is too far.
"The bearing of the third tail roller is damaged and does not rotate, or the upper and lower support rods cannot rotate. The bearing is damaged and cannot rotate too much. The reason for the damage is that there is too much floating dust at the tail of the machine. The lower supporting rod near the tail of the machine is buried in materials or the dust swept out by the cleaner is not removed in time and piles up above the belt below. , causing too much dust in the no-load section or water droplets on the wet roller, causing the belt to slip.
"The four belts are too slack and the upper and lower belts rub against each other with greater force, and the circumferential force on the drum cannot be overcome, causing slipping.
In addition to insufficient initial tension, belt slippage is an automatic protection function that can prevent damage and tearing of the belt. Belt assembly line slippage is often caused by products blocking the tail or loading points on the way. Generally, it looks like Electronic products that are too small often cause the product to get stuck in the belt. Therefore, if the belt slips, you should first check from the tail of the machine to the head of the machine to determine whether the initial tension is insufficient.
(5. Under normal circumstances, it is appropriate to When starting at a set speed, it is less likely to slip. Use a squirrel-cage type motor, which can be inched twice before starting, which can effectively overcome the slipping phenomenon.
(The maximum tension of the six-belt is too large, and the corresponding loose edge tension also becomes larger. Single roller Simple transmission has more slippage than double rollers. Therefore, the multi-roller transmission method can better overcome the slipping phenomenon.
(7) If the load of the belt is too large and exceeds the capacity of the motor, it will inevitably slip. This is especially true on deep groove belt conveyors.
Therefore, to overcome the slipping phenomenon, we should first find out the cause of the slipping and prescribe the right medicine. However, in terms of design, we should start from the following aspects to obtain a fundamental solution
The circumferential force of the transmission drum should be greater than the total resistance to reduce the friction coefficient. Value , use a large wrapping angle to increase the speed of the transmission roller.
(b Use multi-roller transmission to reduce the maximum tension of the belt, reduce the loose edge tension, increase the diameter of the roller, and reduce the speed ratio.
The tightening device The initial tension can change with the size of the load. The use of hydraulic double-sag tightening devices is promoted to ensure a small initial tension. The maximum tension during operation can also be adjusted at any time.
Qingyuan Belt Conveyor
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