In view of the application status of the chain scraper conveyor in our factory, we have innovated our working ideas and independently designed some new special protections specifically for the chain scraper conveyor.
Chain Scraper Conveyor Broken Chain Protection: It is mainly due to the blockage or foreign objects in the transportation of materials that will cause the chain or scraper to break. If it is not found in time, it will cause serious mechanical accidents and affect production. After continuous innovation and research, a special scraper conveyor broken chain monitoring device was designed and produced. Open a rectangular window in the upper part of the tank of the scraper conveyor, weld a support frame with angle steel next to the window, install a proximity switch at the upper hole, install a roller next to the lower position, and simmer a circular arc on the roller Welded on the roller, a small monitoring piece is welded on the flat iron, a piece of leather is installed in the hole under the flat steel, the scraper conveyor will drive the leather movement during normal operation, so that the proximity switch will receive a stable pulse signal, Return to PLC, the principle is consistent with underspeed protection. When the scraper breaks, this signal will be sent back to the PLC, the program will be shut down to reduce losses, and personnel can quickly handle the fault in a shorter time.
Chain scraper conveyor chain jump protection: mainly used to detect the misalignment of the chain on both sides of the machine head or other reasons during the operation. Accident. Therefore, on the basis of drawing on the principle of chain breaking protection, it is innovative to propose two chain breaking detection devices at the two ends of the upper scraper near the head wheel of the scraper to detect the operation of the scraper against the horseshoe ring connection. After using the scraper to jump the chain, it will tilt. The two detection devices that are on the same line after tilting will detect the arrival of the scraper and there will be a time difference. .
Drawer in-position indication protection in the power distribution room: because the scraper chain conveyor must withdraw the drawer, there is a case where the power transmission personnel cannot push the drawer in place during power transmission, but serious problems will occur if the drawer is not pushed in place In order to eliminate this hidden danger, a proximity switch was installed on the back frame of the drawer, and an in-position indicator was installed on the door of the power distribution cabinet. If the drawer did not push into place, the indicator would not light, reminding the power transmission operator to pay attention.
