The bucket wheel excavator does not travel when excavating the materials. The compound motion of rotating of bucket wheel and cantilever crane helps to excavate the materials. The materials would drop to the conveyor belt receiving the materials. And then the materials would be transported to conveyor belt to the transport machines. In general, the bucket wheel excavator has a long distance in aspect of technology, manufacturing level compared with advanced countries. The types and quantities could not meet the demands of open mining industry. The following problems exist.
The bucket wheel excavator and its supporting auxiliary equipment are complex. There are some limitations in the usage. The equipment is bulky. The low mobility and poor flexibility are main problems. The digging force is small. For the large and hard rock, the direct operation is more difficult, generally not suitable for use in hard rock. The initial investment cost of bucket wheel excavator is large with long preparing time, complex design. The bucket wheel excavator belongs series operation. If the system could not guarantee the stability and reliability, continuous mining process system will lose its advantages, failing to achieve the desired goal. Bucket wheel excavator is special equipment. The work devices generally could not be replaced. At present, as the bucket wheel excavator design, manufacturing level and the use of experience continue to improve, the structure of the bucket wheel excavator has also been improved.
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The bucket wheel stacker reclaimer is an important equipment for the continuous loading and unloading of bulk materials in modern industry. It is mainly used in ports, docks, metallurgy, cement, steel mills, coking plants, coal storage plants, power plants and other large bulk materials such as ore, coal, coke, gravel and other storage in the storage yard. The traveling device is to support the weight of the important parts of the whole equipment. Traveling device includes drive trolley, driven trolley, balance beam, drive device, clip rail, anchor, clear rail, balance beam pin, buffer and other components. In the actual application process, there will be different faults. Sometimes the travelling device would rock in reclaiming process. In the normal work, the rocking degree is small. However, if the amount of shaking is too large, we should check it timely. Bucket wheel withstands the relatively large vertical force in the direction of the cantilever direction, that is, lateral force. This force is transmitted to the travelling device is a relatively large horizontal direction of the repulsive moment, and this torque is ultimately supported by the travelling device. The counter torque has two parts. One part is supported by the drive wheel because the drive wheel is in the braking state. The other part is supported by all the wheels. Therefore, in the choice of joint bearings, we need to pay special attention to the form of a reasonable design of the body. In this way, the travel device can be a good transmission of the bucket wheel lateral force generated in the horizontal plane perpendicular to the direction of the load. In the following articles, the other equipment will be introduced such as stone crusher, automated warehouse, apron feeder. The belt conveyor transports the materials through friction drive. We should pay attention to the working of maintenance. The maintenance contents are as follows: 1. After usage for a long time, the belt will become loose. At this time, we should adjust tighten screw or balancing weight. 2. If the heart of belt exposes, we should fix it timely. 3. If the belt breaks, we should get rid of the broken area. 4. The regular checking on the conveying belt joint is very necessary. 5. The rubber face's wear pattern should be checked timely, avoiding the unnecessary loss. 6. If the wear conditions is bad, we could consider that the old belt coordinates with new belt. The operating method is as follows: First, the new conveyor belt should be transported to the tail of equipment. Then one stick should be set on the carrier. On the other side of conveyor belt, the carrier and coiling block are prepared to used by old conveyor belts. We should use knife to cut the old belt and bring the top layer to the coiling block. For the lower layer, we use punch to create holes which are connected with bolts. Then the motor is started in interval, making the old belt reach the pulley and new belt reach bond place. Besides, we should also pay attention to the checking for other equipment such as stone crusher, conveyor components and etc. |