Apron feeder is a continuous transport machine widely used in mining, gold, building materials, port, coal and chemical industry and mining enterprises. It is mainly used for the continuous and uniform supply and transfer of various large weights and abrasive bulk materials from the storage bin or transfer funnel to the crusher, batching device or transportation equipment. It is one of the important and essential equipment in the ore and raw material processing and continuous production process. Apron feeder adopts a high strength dozer die forging chain with a pitch of 228.6mm(9 hours) as the traction component. Two chains bypass a pair of driving sprockets installed at the head of the apron feeder and a pair of tensioning wheels at the tail of the apron feeder to form a closed loop. Each link of the two rows of chains is equipped with an overlapping, heavy-duty conveyor groove to form a continuous conveyor line capable of carrying materials. Its own weight and the weight of the material are supported by multiple rows of support wheels, chain support wheels and slide beams mounted on the body. The transmission system is connected to the reducer by the ac frequency conversion speed regulating motor, and then the carrier mechanism is directly connected by the expansion sleeve and the driving device to drive the low-speed operation. The material discharged into the tail bin is transported to the front of the body along the conveying line to achieve the purpose of continuous and uniform feeding to the working machinery below. At present, apron feeder return support wheel has no anti-falling measures, which is easy to break due to excessive wear limit or abnormal bearing shaft, causing it to fall. Due to the large weight of the support wheel, it is easy to smash the other parts of the lower part, if it is found to be less than it will be transported to the coal transport system by the lower overflow scraper, and even lead to its entry into the screening machinery causing damage to the original and other serious consequences. To solve the above technical problems, we provide an apron feeder return wheel support anti-drop device, which prevents the wheel from falling through the frame structure and fixed seat. In order to achieve the above purpose, our design is achieved through the following technical solutions: apron feeder return wheel support anti-fall device, including a frame structure, the frame structure includes a plurality of curved rods and 2 cross rods, each of which is parallel to each other, and a plurality of curved rods are located on the same virtual line. The lower part of the bend rod is connected with a support frame, and the support frame is fixed with a plurality of bend rods. The frame structure is used to prevent the wheel from falling and damaging. The left end of the support frame is connected with a span beam, and the span beam is arranged above the support frame. Both ends of the span beam are connected with a column, and the top surface of the column is welded with the side wall of the span beam. The upper surface of the span beam is provided with a fixed seat, the section of the fixed seat is inverted "concave" font, and the inner surface of the fixed seat is connected with the upper surface of the span beam. Compared with the prior art, the utility model has the following advantages: in the application, the apron feeder return supporting wheel is equipped with an anti-fall device, and the supporting wheel is supported by the bending bar and cross bar of the frame structure, and the supporting frame is framed, which can effectively avoid the falling of the supporting wheel due to excessive wear limit or the fracture of the abnormal bearing shaft. The anti-fall device of the support wheel is installed by the installation position of the support wheel, without installing other auxiliary facilities, and its structural strength is high, which can fully withstand the force generated when the support wheel falls, and prevent other losses caused by the fall of the support wheel.
Preferably: the inner surface of the fixed seat is bolted to the upper surface of the span beam. Using the above technical solution, the fixed seat and the span beam are firmly connected through this connection mode, and the role of supporting the wheel is very good, and the internal width of the fixed seat is equal to the thickness of the span beam. The fixed seat is just connected to the span beam to ensure the fixed connection between the fixed seat and the span beam. The column is used to support the wheel. The above technical scheme is adopted to ensure that the anti-fall device is supported by the column. The material of the curved rod is round steel. Using the above technical scheme, the round steel has a good strength and ensures the structural strength of the anti-falling device. The diameter of the round steel is 20mm. Using the above technical scheme, such round steel is thicker and has good strength to ensure the structural strength of the apron feeder anti-drop device. The material of the fixed seat is steel plate. The steel plate has good strength to ensure the structural strength of the anti-fall device. The thickness of the steel plate is 30mm. The thickness of the steel plate has a good strength to ensure the structural strength of the anti-fall device. The material of the column is steel plate, and the thickness of the steel plate is 12mm. The thickness of the steel plate has a good strength to ensure the structural strength of the anti-fall device.