Bolted joint anti-loose parts summary

First of all, I am very happy to wish you all a happy May Day, I hope everyone has a wonderful holiday. Let's start learning today.

Once the bolt connection in the mechanical equipment is loose, it will cause the bolt to fall off and cause a major safety hazard, or the bolt loosening preload will decrease and the fatigue life of the bolt connection will be greatly shortened. Therefore, appropriate anti-loose measures should be taken in the design to ensure that the bolts are not loosened during actual use. There are several ways to connect the anti-loose components commonly used in design:

Double nut

Double nut anti-loose is also called anti-loose of the top nut. When the two top nuts are tightened, there is always interaction pressure between the two opposite nuts. Any one of the two nuts needs to be rotated to overcome the screwing thread. Friction between. Even if the external load changes, the pressure between the counter nut is always present, so it can relax.

2. Self-locking nut

The self-locking nut is generally frictional. The principle is that the embossing tooth is pressed into the preset hole of the sheet metal. Generally, the diameter of the pre-positioning hole is slightly smaller than that of the rivet nut. The nut is connected to the locking mechanism, and when the nut is tightened, the locking mechanism locks the bolt thread.

Built-in nylon self-locking nut

Deformed thread locknut

Wedge action lock nut

3. Threadlocking glue

Threadlocking glue is an adhesive composed of (meth) acrylate, initiator, co-promoter, stabilizer (polymerization inhibitor), dye and filler in a certain proportion.

4. Cotter pin

After the nut is tightened, insert the split pin into the nut groove and the tail hole of the bolt, and open the tail of the split pin to prevent the relative rotation of the nut and the bolt.

5. Slotted nut

The slotted nut is used with the screwed hole bolt and the split pin to prevent the bolt and the nut from rotating relative to each other.

6. Series wire anti-loose

The anti-loose steel wire is inserted into the hole of the bolt head, and the bolts are connected in series to prevent each other. This way of relaxing is very reliable, but disassembly is cumbersome.

7. Preload

High-strength bolted joints generally do not require additional anti-loosening measures, because high-strength bolts generally require a relatively large pre-tightening force. Such a large pre-tightening force creates a strong pressure between the nut and the connected part. This pressure creates a frictional torque that prevents the nut from rotating, so the nut does not come loose.

8. Stop washer

9. Spring washer

Open spring washer

Tapered elastic washer

10. Double stack self-locking washer

Double stack self-locking washer DIN25201

The environment-friendly protective cover type Optical Fiber Laser Cutting Machine adopts international advanced optical fiber lasers, has stable performance, can reduce environmental pollution, can cut various metal plates, and is mainly suitable for fast cutting of stainless steel, carbon steel, manganese steel, copper plate, galvanized plate, various alloy plates, rare metals and other materials. Applicable industries: sheet metal, mechanical equipment, precision instruments, metal molds, auto parts, kitchen and toilet products, lighting, mobile phone communication, digital products, electronic components, clocks and watches, computer accessories, instruments, jewelry, glasses, craft gifts, etc

Fully Enclosed Fiber Laser Ctting Machine

Fiber Laser Cnc Machine,Iron Sheet Laser Cutting Machine,Fiber Metal Laser Cutting Machine,Fiber Sheet Laser Cutting Machine

Buluoer Intelligent Technology Co., Ltd. , http://www.buluoercuttingmachine.com