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cap locking bolts for cone crusher
cone crusher, locking in accordance with the upper support ring 12 of the cylinder and the piston, high pressure oil into the lock after the tank so that the piston to rise into the lock nut and adjust the ring slightly from the top to make zigzag thread bevel closefit to complete. dust particles and dust from the guard to enter the high pressure oil the locking fuel tank surface wear, piston oil seal can not seal the high pressure oil, as well as oil leaks caused by locking can not be completed, the hydraulic oil spills outside the body to cause pollution, oil liquid into the powder ore and then affect the recovery rates. replacement of the support ring to solve the problem, but because of its high prices, due to the replacement time is too long, affecting production in about a week, can not be adopted.
that we wedge in between the lock nut and adjust the ring, although a short period of time to resolve locking problems, but the adjustment ring can not be adjusted after the crushing chamber over iron caused by the wear of the wedge lock failure. locking device to consider not only normal locking and easy to adjust, but also to consider the instantaneous tension in the crushing chamber over iron. in considering the circumstances, we decided to uniform welding of the adjustment ring 8 hole 150 mm × 220 mmδ50 steel plate, 8 φ60 holes in the corresponding cut on the dust cover system, processing eight m56 bolts, 8 diameter φ20 φ80 in diameter of the cylindrical helical compression springs and 16 springs gland.
as the model spring of each work load up to 21 947 n, 8 the root can reach 175 576 n load to meet the adjustment ring weight and normal breaking force, the specific assembly of figure 1. bolt through the plate and dust cover, spring up and down the gland bearing spring and then tighten the nut. the dust cover the lower part close to the support ring on, tighten the nut may be brought to the adjustment ring, to make the adjustment ring and support ring serrated threaded slant close together to prevent loosening over the iron, the spring can buffer tension to protect the bolts buzhi yu pulled off. the rotation of the adjustment ring, loosen the nut, the adjusting ring to decline.
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