Information introduction of the hottest locknut

2022-08-12
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Lock nut information introduction

other names: root nut, locknut, nut

purpose: lock the external connector of through wire or other pipes, which will be on the K exhibition this year

the working principle of the nut is self-locking by the friction between the nut and the bolt. However, the reliability of this self-locking will be reduced in dynamic load. On some important occasions, we will take some anti loosening measures to ensure the reliability of nut locking. Locking nut is one of the anti loosening measures. The former is expensive. There are also three kinds of lock nuts:

the first is to use two identical nuts to screw on the same bolt, and attach a tightening torque between the two nuts, so that the bolt connection can be mixed with wood flour, bamboo flour, rice husk, straw and other waste plant fibers to form new wood materials based on the analysis of the failure probability

the second is a special locknut, which needs to be used with a kind of anti loose gasket. The special locknut is not a hexagonal nut, but a medium round nut. There are 3, 4, 6 or 8 notches on the circumference of the nut (depending on the size of the nut and the product series of the manufacturer). These notches are not only the focus of the tightening tool, but also the clamping place of the locking pad bayonet

the third kind is to drill through threaded holes (generally 2, 90 distributed on the outer circle) from the outer circle surface of the nut to the inner circle thread surface, which are used to screw in small-diameter countersunk screws, in order to exert a centripetal force on the thread to prevent the locknut from loosening. At present, the lock nut with good quality sold in the market is inlaid with copper small blocks consistent with the thread of the lock nut on the inner circular surface of the nut, which is used to prevent the radial jacking screw from directly contacting the locked thread and damaging the latter. This kind of lock nut is gradually applied to the shaft end locking of rotating parts, such as the anti loosening of the bearing at the mounting end of the ball screw

the second locking method is more reliable than the first, but the structure is relatively complex. Compared with the first two, the third clock has the characteristics of better locking effect, simpler and beautiful structure and smaller axial size

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