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How to use expansion screws
First of all, we need to understand the principle and performance of expansion screws. Expansion screws generally refer to metal expansion screws, in fact, there are plastic expansion screws, but they are not commonly used, so we generally think that they are metal.
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How to maintain hexagon bolts
① When running 12000km each time for secondary maintenance, the engine oil sump should be assembled to check the use of the engine bearing bush. If it is found that the clearance of the individual bearing bush is too large, it should be replaced, and the connecting rod bolts should be replaced at the same time. In normal operation, if the engine is found to run unsmoothly and there is abnormal sound, it should also stop in time to check.
Fastener bolted connection, how to make the washer play a better value
Bolt as a common connection parts, commonly used in mechanical equipment, cars, trains and building structures, according to different requirements to choose the appropriate type of bolt.
What are the materials of U-bolt
The general production of U-bolt materials are :Q235 steel, 45# steel, 40 boron steel, 20 manganese titanium boron steel. More than 90% of them are Q235 steel as raw material production.
Why did the bolt come loose?
To prevent spontaneous bolt loosening, the sliding between the connecting parts needs to be eliminated or at least reduced below the critical level. This can be achieved by increasing the axial tension, increasing friction between clamping components or reducing the cyclic load (e.g., shock, vibration or cyclic heat load).
High strength bolt tightening method
High strength bolt is a common fastening part of us. Tightening is an important link we value in the process of use. Therefore, many people will demand: how to tighten high strength bolt? What are the ways to tighten high strength bolts? This series of questions, the Chinese standard parts network according to years of experience to give you a good answer.
Cause and solution of expansion screw loosening
The expansion bolt was not fixed for a long time before it fell off. At that time, the person who decorated the house said that your house was hollow brick, so the expansion bolt must not be fixed well. It is recommended to cut holes in the lower expansion bolts and fill them with concrete. That is to say, the point needs to be changed into a concrete wall, in this part of the eye expansion bolt, so that the expansion bolt can be installed. You can hang very heavy things in the future and it won't be a problem.
The secret principle of bolts and nuts
According to the connection mode of bolts and nuts, the working principle of the ring can adhere to not loose in harsh conditions, the Chinese standard parts network summed up a nut loose principle, hoping to help you. 其主要结构是一种双螺母反向螺纹防松动紧固装置
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