A thread anti-loosening device adopting tooth-shaped limit

Abstract

The invention discloses a thread anti-loosening device adopting a tooth-shaped limit block, which comprises a tooth-shaped limit block, a movable block, a stop bolt and a lock nut, and the surface of the tooth-shaped limit block and the bottom surface of the movable block are both formed There are tooth grooves, the middle part of the tooth-shaped limit block has a square through groove, and the bottom of the tooth-shaped limit block is formed with convex teeth. The movable block is fixed on the square through groove of the tooth-shaped limit block through the stop bolt. The tightening nut is set on one side of the shaft sleeve, and the joint bearing is installed on the other side of the shaft sleeve. The shaft sleeve is sleeved on the rotating shaft. The limit block is engaged, and the stop bolt is aligned and locked with the pre-opened threaded hole on the lock nut. Through the tooth-shaped limit block and the movable block, the position between the lock nut and the shaft sleeve is limited, so that there is no relative movement between the two, and the thread is prevented from loosening. Fine-tuning plays a key role in the precise limit of the lock nut during the installation of the shaft, and the adjustment is convenient and the limit is accurate.

Description

technical field [0001] The invention relates to a thread anti-loosening device, in particular to a thread anti-loosening device adopting tooth-shaped limit. Background technique [0002] In the usual bolt (nail) connection design, a variety of thread anti-loosening forms can be selected. Standard anti-loosening methods such as cotter pin anti-loosening, punch point insurance anti-loosening, stop washer anti-loosening and fuse anti-loosening. These simple anti-loosening methods have been proven to be effective for common bolt (nail) and nut connections, but not necessarily applicable for some unconventional large-diameter threaded connections (such as the connection between the full-motion horizontal tail shaft and the lock nut of the bearing) . [0003] Due to the large-diameter threaded connection will generate greater friction, and due to the special structural form and limited space, it can only be prevented from loosening by appropriately improving the stop washer in t...

AI Technical Summary

Problems solved by technology

However, in fact, these two methods are not ideal, and their common disadvantage is that the rotation angle of the nut needs to be adjusted during the installation process to ensure that the curved teeth of the stop washer or the screw holes of the limit block and the limit groove on the nut Or screw holes aligned

[0004] The above-mentioned operation is sometimes very difficult, and the adjustment accuracy is limited by the number of limit grooves or holes. In fact, this problem also exists in conventional anti-loosening threads. Generally, it can be solved by adding gaskets, and the degree of tightness is easy to control.

However, for large-diameter threaded connections, especially the anti-loosening of the shaft sleeve thread between the full-motion horizontal tail shaft and the bearing, it is necessary to overcome the limitations of many factors such as the inability to add pads, high clearance requirements, precise positioning, and easy operation. A new type of anti-loosening device

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