Treatment of broken joint bolts of hollow shaft and cylinder flange of ball mill

The ball mill hollow shaft and the barrel flange bolt breakage treatment Xie Xianke Guangzhou Yingzhou Cement Co., Ltd. Our company's ball mill often has the problem of the breakage of the hollow shaft and the barrel flange coupling bolt, and the following measures have achieved good results.

1 After positioning the 6.4m mill hollow shaft and the barrel flange coupling bolts, it is found that the two are matched with the stop wear deformation, and the center line deviation is large. Therefore, we first use the sleeper and jack to lift the cylinder to make it reset, and then use the hollow shaft and the flange of the cylinder to connect the screw holes to process three taper holes of 1:100, and prepare the positioning pin to ensure the end face of the cylinder. It has a good position with the end face of the hollow shaft, and the center of the two is on the same center line, which is conducive to the installation and fastening of the connecting bolt.

2 Trim the bolt hole and replace the new bolt. According to the bolt breakage, the excessive rounding of the bolt shoulder is changed from lmm to 2mm, and the thread is matched with fine teeth. When installing the twisted hole bolts, the actual measurement is prepared, and the H7A6 is used for the standard installation, careful inspection, and improved assembly quality.

Correctly strengthen the bolts to prevent loosening and strictly regulate the force and operation method to ensure even tightening.

Regular inspection during use, the time interval depends on whether the nut is loose: or I~2h, or a shift, or a working day, or a week, until the bolts are in good tightness, can be regarded as a maintenance End.

Adjust the center line of the mill reducer to adjust the normal meshing of the small tooth and the large ring gear. Based on the center line of the small pinion, use the dial indicator to determine the error, and gradually correct the reducer and motor so that the center line deviation is allowed. Within the range of values, to reduce the vibration of the mill operation and reduce the load on the coupling bolt.

After the above measures, the problem of the fracture of the hollow shaft of the mill and the flange of the cylinder flange is solved fundamentally, which ensures the normal and safe operation of the mill.

(:2002-01 I "衿 灰 灰 徐 》 》 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 The new art, new technology, new equipment and new achievements of comprehensive utilization of coal ash, introduce the research results and advanced experience of comprehensive utilization of fly ash at home and abroad. The publication includes: special discussion, new products, new technology development, scientific experiment More than 10 columns, such as policies and regulations, applied research, experience introduction, research review, management forum, wall reform and energy conservation.

Welcome to advertise, price concessions, beautifully printed, and thoughtful service. Advertising price: cover 2500 yuan / period, seal 1 * 2200 yuan / period, seal 2, seal three 2000 yuan / period, color insert per page 1500 yuan, black and white inserts per page 1000 yuan, 1/2 page 500 yuan, 1 /4 pages 300 yuan, 200 words below the short message 100 yuan.

The 16th issue of the bimonthly publication, published on the 25th of the month, 10 yuan per issue, 60 yuan for the whole year.

-1187/TU Address: No. 46, East Street, Shijiazhuang City (inside the Provincial Library) Zip Code: 050011 -6061348 (Fax) Bank: Shijiazhuang Commercial Bank Changan Branch Account Receiving Unit: Fly Ash Comprehensive Utilization Editorial Department

Oil Equipment

Oil drilling equipment includes various kinds of oil drill strings and Oil Drilling Tools, such as drill bits, drill collars, drill pipe, elevator links, spinning wrenches, drilling casing slips, drilling manual tongs, and more. Being highly reliable and safe, the petroleum equipment is widely used in the oil industry.