But as long as your crusher is not a Dahongli brand, it is not recommended that you buy it, so there is no guarantee after sale.
Pay attention to the following items during replacement:
Replace broken walls and mortar walls.
7. 1 overview
Don't break through the crushing wall and mortar wall, otherwise it will damage the crusher frame and the surface of the moving cone; When the surface is damaged, it can only be repaired by machining after surfacing. (See 7.2 for wear degree of broken wall and mortar wall)
See the vulnerable parts index diagram for the vulnerable parts needed to replace the broken wall and mortar wall. When installing the broken wall and mortar wall, remove the rust inhibitor on the machined surface first.
7.2 Crushing crusher
Remove the gravel from the slip ring cover so that the spindle can fall freely. Open the manual valve of the regulating device and lower the spindle (see Lubrication and Regulation 3.2). When the spindle reaches the lowest point (observed from the inspection hole of the lower frame), close the valve.
Remove the bolts on the feed hopper and lift the feed hopper. The standard feed hopper is equipped with M 16 bolts (7.2. 1) (wrench opening is 24 mm).
Remove M20 bolt (wrench opening 30mm) on the top bearing cover, lift the bearing cover and remove grease from the top.
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Figure 7.2. 1
Remove the M48 fastening bolt (wrench opening 75mm) between the upper and lower frames. Use four M48 bolts (wrench opening 75mm) to separate the upper and lower frames l0-20mm, and lift the upper frame. (See Figure 7.2.2. Lift the upper frame together with the fixed cone, and put the upper frame on the platform to remove the mortar wall. (See Figure 7.2.3)
Figure 7.2.3
7.3 Replace mortar wall
Remove the bolt M24/M30 nut (wrench opening is 36/46mm) for fixing the rolled mortar wall.
Wedge iron is placed between the bottom edge of the mortar wall and the frame, and the mortar wall is wedged from the upper frame. Watch out for mortar wall sliding! Be careful not to damage the mating surface between the fixed cone and the frame. Be careful to slide the mortar wall during the process! And pay attention to your own safety!
Clean and check the mating surface of the mortar wall of the upper frame and the tapered mating surface between the two frames. If the wear is serious, it must be repaired by surfacing and machining.
Clean the mating surface of the mortar wall, hoist the upper frame to the upper part of the mortar wall, and align the connecting bolt holes. Guide and position the bolt hole with two bolts.
Tighten two bolts and insert the remaining bolts into the screw holes to tighten the mortar wall. M24/ M30 nuts need to be tightened evenly by the cross method, and the tightening torque is 662/1300 n.m. There should be no gap between the mortar wall and the lower end of the upper frame. Knock the mortar wall to make it fit closely. If the mortar wall can move relative to the frame, it will reduce the service life and damage the frame.
7.4 Replace the damaged wall
After removing the upper frame, the broken wall can be replaced without removing the spindle. In order to check the upper and lower bronze plates, it is sometimes necessary to lift the spindle from the crusher. The upper and lower bronze plates shall be inspected at least once every six months. See section 9.4 for operation.
If the spindle is to be disassembled, screw the eyebolt M36/M48/M56 in the toolbox into the screw hole at the top of the spindle, then carefully lift it, and support the spindle assembly on the platform with a moving cone or broken wall instead of a dust seal ring. Or placed on the steering side, the main consideration is not to damage the surface of the spindle bearing, nor to make the surface of the thrust bearing contact with the ground, and it should be protected with rubber plates (Figure 7.4. 1).
Figure 7.4. 1
Gas cutting or grinding off the welding ring between the lock nut and the moving cone, carefully remove the broken wall (see Figure 7.4.2), and loosen the lock nut counterclockwise with a sledgehammer. If necessary, weld the impact block on the nut. If the nut won't loosen, it will be cut by gas. Be careful not to damage the thread on the spindle.
Figure 7.4.2
Lift the broken wall and nut away, ensure that the hook is firm before lifting it, and repair it by welding if necessary. If the broken wall won't unscrew, knock it down with a sledgehammer. Clean and check the mounting surface on the moving cone and smooth it.
Check the condition of the dust seal ring and replace it if necessary. As mentioned in Section 9.3, the gap between the dust seal ring and the slip ring cover shall not be greater than 2mm.
If the spindle has been removed, check the upper and lower bronze plates again. If the wear depth of the upper and lower bronze plates is less than 2mm, they must be replaced.
Add oil to the nut thread and tighten it clockwise. When assembling, knock the broken wall with a sledgehammer to close it. After tightening, weld the nut, cutting ring and crushing wall together (see 3.5 for welding method).
If the spindle has been removed:
Before putting down the spindle, move the medium-thick steel plate to the position aligned with the hole on the eccentric shaft sleeve, so as to install the upper and lower copper plates as well as possible. Carefully hoist the spindle into the crusher. Note that the hole of eccentric shaft sleeve is inclined. Be careful not to damage the sleeve surface. When it slides over the slip ring cover, the dust seal ring must be prevented from being damaged.
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Figure 7.4.3