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How to safely operate the belt conveyor brake?

by:YiFan Conveyor     2021-06-14
The braking problem of belt conveyors has always been an important issue for the safe operation of conveying equipment, especially for belt conveyors. In addition to meeting the needs of normal parking, the braking device is installed on the belt conveyor, and more importantly, it is emergency braking. Play a role at times to prevent the occurrence of speed accidents. The chain conveyor is a transmission device that uses standard chain plates as the bearing surface and is driven by a motor reducer. The chain loading conveyor is composed of a power unit, a drive shaft, a roller, a tensioning device, a sprocket, a chain, a bearing, a lubricant, a chain plate, etc. The mesh belt conveyor transportation machine can not only complete the transportation of bulk materials, but also It is used to transport finished materials, but depending on the place of use, working environment, and the type of materials to be transported, there will be big differences in its design and application. Belt conveyors have universal mobile, underground selection, and open-pit fixed. , Special structure, removable conveyor, loader special reprinting function, large inclination conveyor, etc. Generally speaking, the short-distance in-plant conveyor can complete horizontal, upward or downward transportation, and the reversible pattern belt conveyor can be used The double-speed chain assembly line for two-way conveying materials is usually called: self-flow conveying system double-speed chain conveyor is mainly used for material conveying in assembly and processing production lines. Its conveying principle is to use the speed-increasing function of the double-speed chain to carry the goods on the tooling The board runs quickly and stops at the corresponding operating position through the stopper; or through the corresponding instructions to complete the accumulation and release action, shifting, shifting, and dedicated lines. The temperature of the delivered material is less than 60°C. The captain and assembly form can be determined according to user requirements, and the drive can be an electric drum or a drive device with a drive frame. The effective combination of man and machine in the assembly line fully reflects the flexibility of the equipment. It organically combines the conveying system, the accompanying fixture, the online special machine, and the testing equipment to meet the assembly requirements of a variety of products. The hydraulic speed control braking system converts the inertia generated when the conveyor brakes and decelerates into the pressure energy of the liquid, and then converts the hydraulic energy into the temperature rise of the oil, which is cooled and distributed to the surrounding space to make the belt running speed smooth The curve drops until it stops, so as to achieve the purpose of soft braking. It adopts a closed-loop control loop, and the system judges the running status of the conveyor by itself according to the speed feedback signal and reacts, and automatically adjusts the magnitude of the braking torque. During the entire braking process, there are higher requirements for the detection accuracy (precision) of the conveyor speed. At the same time, considering the harsh environment of the system, this article introduces a special speed detection method, and many experiments The research results show that the speed detection method has high detection accuracy and reliability. The speed feed system composed of programmable controller (PLC) can analyze the speed detection feedback system of the belt conveyor. The signals processed by the speed sensor and subsequent circuits are processed by the number of pulse trains collected by the speed sensor and the high-speed counter. After setting the feedback signal measured by the counting frequency measurement method (M method), compare the feedback signal measured by the counting frequency measurement method with the set speed signal to obtain the deviation signal e, which is then used by the digital PID regulator Get the desired output value. Because the brake device is installed on the high-speed shaft of the conveyor, the multi-tooth detection disk is installed on the coupling of the high-speed shaft, and the speed sensor is fixed, so that the teeth of the detection disk can smoothly pass through the induction magnetic groove, and the teeth of the detection disk can be Through the induction magnetic slot. Rotation speed can be measured. The sensor includes a high-frequency oscillation circuit, a shaping detection circuit and a signal processing circuit. Then the signal is converted into a switch output. It has the characteristics of high reliability, simple peripheral circuit, and direct matching of output and controller.
With technology speeding up in lighting speed, have created quite a name for itself amidst container loading machine and it happens to have a lot of benefits as well.
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The trend toward using container loading machine flexible conveyor system to ease container loading machine, once established, soon extended into such additional fields as container loading machine and container loading machine.
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