When exactly can spring washers be used and racking application scenarios Industrial Solutions

Spring washers can generally be used on the following occasions:

1. They are generally used on occasions where the bolt's preload force is not required to be high, and the dynamic load is small.

2. When the thickness of the plate fixes the clamping length of the bolt being relatively short, the bolt stress relaxation is more prominent, and spring washers can compensate for the stress relaxation. Simply put, that is, when the bolt has no preload installation torque requirements, only needs to tighten, and is fixed plate is relatively thin, spring washers still have a role to play a specific anti-loosening effect once the bolt is installed with the torque requirements, then the spring washer is not applicable.

Shelf in the end, whether to use washers

1. Flat washers are generally required and can be used to protect the workpiece and improve the reliability of the connection. Usually used in the nut end 1, when the need to protect the surface of the workpiece, the bolt head end and then add a; in the long hole or oversized holes, the general use of thickened flat washers or multiple shims, which need to look at different situations;

2, Spring pads need to be needed according to the specific circumstances; when the bolt has precise tightening torque preload needs, do not need to spring pads, such as base fixing, anchor bolt fixing, and other necessary plate fixing, do not need to add spring pads; when the connection is in a non-critical point, the bolt can be tightened to the position or due to the shelf of the cold-formed thin-walled particular structure leads to can not be tightened to the position, tightening will destroy the connected components The cross-sectional shape of the connecting member, can be used for anti-loosening bullet washers;

3, flange surface nuts, bolts, and other special anti-loosening nuts do not need washers;

4. If a shelf is directly under frequent dynamic load connection, from the point of view of the reliability of the connection, the degree of fastening, and the effect of anti-loosening, the best solution is to use a high-strength bolt friction-type connection design, which can achieve a similar effect to welding.

Nuts and bolts, in what case will be loose

1、The typical coil spring washer plays the role of spring when the bolt is tightened. But when the bolt is completely tightened, the washer is generally flattened; at this time, it can be treated as a one-piece flat washer, and its locking function does not exist.

2, only from the point of view of anti-loosening, under the nut with a spring washer is not as good as adding a flat washer; adding a flat washer is not as good as not adding a washer.

Spring washers anti-loosening.

1. Although spring washers are more commonly used in the field of anti-loosening, their anti-loosening effect is very unsatisfactory, as proved by experiments in the case of transverse vibration. Plus, the spring washer nut loosened more quickly than a separate use of the nut.

2. Using spring washers can improve the connection's fatigue strength, but it is not conducive to its reliability and anti-loosening.

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