The chain wheel and chain of the scraper are the main drive accessories of various scraper machines, which together constitute the drive mechanism of scraper machines. The chain wheel and chain of the scraper machine of Shandong Jinxin Chain Factory are pulled by the scraper chain to transport bulk materials in the trough, which is stable and durable. The scraper can be used for horizontal and inclined transportation. The sprocket shaft assembly of the scraper, also known as the sprocket assembly, is a component of the fully mechanized scraper and loader head. In coal mining, the chain wheel drives the chain through the reducer to drive the scraper in the middle slot to transport coal and other materials. The chain wheel components of the scraper are also divided into different models according to the main dimensions.
The chain wheel of the scraper is made of structural alloy steel. The chain wheel of the scraper is processed through multiple processes. The scraper sprocket has the characteristics of high strength and strong wear resistance. The scraper chain wheels have complete models and are suitable for various types of scraper conveyors.
The scraper chain wheel has high strength, and wear resistance, can withstand pulse combination and impact load, and has certain toughness; The design of tooth size parameters is accurate, the machining accuracy is high, and the chain matching is good.
At present, the number of sprocket teeth is generally 6-8.
Scraper chain wheel material
Most scraper sprockets are made of 42CrMo or 45CrMnMo. The sprocket is forged and quenched to improve its wear resistance. First, the forging surface shall be free of cracks, interlayers, folds, developmental damage, and slag inclusion. After 20 processing and forming processes, put the sprocket into the head and tail of the machine.
Working principle of scraper conveyor
The working principle of the scraper conveyor is to use the open chute as the bearing part of coal, gangue, or materials, and the scraper is fixed on the chain (forming the scraper chain) as the traction part. When the head drive part's conveyor gearbox starts, the wheel on the belt conveyor's head shaft rotates to circulate the scraper chain and move the animal material along the chute until it is unloaded at the head. The scraper chain bypasses the chain wheel and operates in a stepless closed cycle to complete the transportation of materials.
Precautions for using scraper sprocket
FU scraper conveyor casting chain wheel
The chain wheel shall have proper tightness. Too tight will increase power consumption, and the bearing is easy to wear; The chain wheel is too loose and easy to jump off. The tightness of the sprocket is: it is lifted or pressed from the middle of the sprocket, about 2~3% of the center distance between the two sprockets.
The chain wheel shall be installed on the shaft and shall not swing or skew. In the same drive assembly, the end faces of two sprockets should be in the same plane. When the center distance of the sprocket is less than 0.5m, the deviation can be 1mm; When the center distance of the sprocket is greater than 0.5m, the deviation can be 2mm. However, the friction on the tooth side of the chain is not allowed. If the two wheels are offset too much, it is easy to cause chain fracture and accelerated wear. When replacing the chain, check and adjust the offset.
When the sprocket is seriously worn, replace it with a new one to ensure good engagement. It is not allowed to replace the sprocket with a new one. Otherwise, it will cause poor engagement and accelerate the wear of new sprocket or chain.
other sprockets
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