Views: 0 Author: Site Editor Publish Time: 2022-09-27 Origin: Site
1. Chain wear
a. Wear of flat ring engagement
The wear of the flat ring engagement is caused by the mutual extrusion of the vertical ring and the flat ring. As this is the connection part of the chain, the worn part is located inside the chain arc. If the worn ring chain continues to be used, the chain may break from both sides of the shoulder.
b. Flat ring straight edge engagement wear
As the friction between the chain socket and the flat ring is large, the chain and sprocket will be worn, and the worn part is located outside the arc. If the wear is severe, the flat ring will "gnaw".
c. Wear of vertical ring straight edge
During the transportation of circular chain, sliding wear will occur between vertical ring and materials, chute and sprocket. At the same time, the occurrence of wall flaking, roof caving and other phenomena will also have a greater impact on the opposite ring, which will aggravate the wear of the vertical ring.
2. Chain wheel worn
a. Worn sprocket chain socket
When the chain wheel of the scraper conveyor engages with the chain, due to poor lubrication conditions, there is a relatively large sliding movement at the engagement point. The flat ring will rub with the chain socket, causing wear. The pit in the center of the chain socket is caused by wear. At the same time, due to the existence of material abrasive particles, there will be abrasive wear, causing the surface of the chain wheel to peel off, resulting in many small holes.
b. Worn sprocket teeth
As the wear of chain wheel and chain is further aggravated, the distance between the two chain sockets is getting closer and closer, and the chain sockets of chain wheel are smoothed due to wear.
Recently, the Jining High-tech Zone General Trade Union and the Human Resources Department of Jining High-tech Zone jointly announced the 2024 'High-tech Craftsman' list. Li Zhenbo, General Manager of Information Technology at China Coal Group and General Manager of Zhongyun Group, was awarded the title of 'High-tech Craftsman' for his outstanding contributions and innovative spirit.
On September 30th, China Coal Group held a grand cultural performance to celebrate the 75th anniversary of the founding of the People's Republic of China with the theme of 'Forging Ahead to Celebrate the Birthday of the People's Republic of China' in the conference center. The chairman of China Coal Group, Mr. Qiu Qing, the general manager of China Coal Group, Mr. Han Yong, and all the members of the leadership team of China Coal Group attended the event and witnessed the grand celebration together with more than 1,000 employees on the spot. The cultural performance was conducted in the way of 'on-site + webcast', aiming to show the spirit of the cadres and workers of China Coal Group and express the love and blessing to the great motherland through colorful cultural programs.
On September 29th, in this season of autumn and fruitfulness, China Coal Group, full of joy and pride, participated in the ‘Harvest Celebration and National Day’, which was jointly organized by Jining Hi-Tech District Federation of Trade Unions and Jiezhuang Street to welcome the 75th anniversary of the founding of New China and the Farmer's Harvest Festival.
