Intermediate bearing installation process and requirements

1. Intermediate bearing frame and welding pad are welded
 1.1 Before the cable is illuminated, the intermediate bearing frame is pre-positioned according to the hull reinforcement, and a pole is mounted at a distance of about 1 m from the frame to determine the front and rear position of the frame. When the cable is illuminated, the axis is sampled at the front and rear positions of the frame. The front and rear positions are positioned based on the benchmark
 1.2 After the wire is illuminated, measure the distance between the axis and the floor, determine the margin in the height direction of the intermediate bearing frame, and then cut, and then position the welding intermediate bearing frame according to the size requirements of the drawing.
 1.3 According to the requirements of the drawings, the welding gaskets shall be spot-welded and fixed on the middle bearing frame. After the process is confirmed, the welding may be carried out. When welding, pay attention to the inclination direction of the welding gasket, and then weld the gasket to achieve Matching process requirements
2. The intermediate bearing is temporarily fixed
2.1 Before the main shafting system is centered, pre-install four top-lifting top wire sockets at appropriate positions on the middle bearing frame panel, then install the intermediate bearing at the journal of the intermediate shaft, and pay attention to the center of the intermediate bearing housing to Distance requirement for the end face of the rear flange of the intermediate bearing
2.2 After the initial centering of the main machine, the front and rear left and right sides of the welding intermediate bearing are temporarily adjusted to the top wire seat and the card, code tooling
3 main shaft shaft load adjustment before the initial installation of the intermediate bearing
3.1 After the shafting is verified and the bolts are installed, the bearing cap is opened, the height of the four top wires of the bearing base is adjusted, and the top wire is temporarily adjusted. The gap between the bearing bush and the shaft neck is zero, and the left and right gaps are equal.
3.2 After the bearing is assembled with the journal, check whether the gap between the hole at the two ends and the journal is uniform.
3.3 Clean the joint surface and the upper inner control and apply clean lubricating oil.
3.4 Wipe the copper gasket of the intermediate bearing and place it correctly on the bearing joint surface.
3.5 Place the bearing cap on the bearing housing as a whole and position the bearing cap correctly with two taper pins
3.6 Insert the bearing cap and the fastening bolt on the bearing housing and tighten
4. Protection of intermediate bearing during main shaft load adjustment
The bearing cover is about 2mm high, and the gap between the bearing cover and the bearing housing must be covered with a color belt. The front and rear end faces are sealed with white buckle cloth to prevent dust, welding slag, water vapor and other impurities from entering the bearing housing. Inside
5. Installation of the intermediate bearing after the main body is glued
5.1 After the main machine is glued for 24 hours, according to the above requirements, the relevant parameters of the middle bearing installation of the accessory, after meeting the process requirements, the intermediate bearing is re-tested and must meet the process requirements.
5.2 No. Hole and Drilling of Intermediate Bearing Frame
5.3 Measure the gap between the bottom of the bearing seat and the welding pad at the four corners of each gasket. According to the experience, plus the gasket and the remaining amount, the thickness of the positive gasket is processed and the adjustment gasket is matched and matched. The inspection gasket can move the adjustment gasket out of the drill hole. After drilling, the adjustment gasket can be inserted between the bottom of the bearing seat and the welding gasket. Finally, the intermediate bearing anchor bolt is installed.
5.4 After the intermediate bearing anchor bolt is tightened, remove the four top-lifting top wires of the intermediate bearing base, and re-test the intermediate bearing load. After meeting the process requirements, the positioning pin can be processed and punched into the pin hole.
5.5 Remove the intermediate bearing before and after the temporary fixed top wire
5.6 Open the bearing cap and install the oil pan on the intermediate shaft in the oil cavity at the end of the bearing housing to adjust the distance between the sharp angle of the oil pan and the sharp angle of the bearing body to meet the technical requirements of the drawings.
5.7 Check whether the left and right clearances of the intermediate bearing are uniform, and check whether the total clearance meets the drawing requirements by using the lead wire method.
5.8 Thorough cleaning of the inner cavity of the bearing on the intermediate bearing
5.9 Place the bearing cap on the bearing housing and position the bearing cap correctly with two taper pins, install the fastening bolts and tighten them to ensure the integrity of the intermediate bearing installation.
5.10 Install rubber on the gap between the front and rear ends of the intermediate bearing and the intermediate shaft to prevent dust from entering the intermediate bearing.