Cause and solution of expansion screw loosening
Release time:
2023-05-18 14:32
Source:
Reasons and solutions for the loosening of expansion screws:
One, fixed to the hollow turn on
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.
Two, the installation is not in place, resulting in nut loosening.
If you are not always installing expansion screws, you may miss a point, that is, when the expansion screw should be completely expanded, has to be screwed until it can not be screwed, some people are afraid of screwing the buckle, it is recommended not to buy inferior expansion screws, with pure national standard expansion screws installation need not be afraid of, must be screwed to the unscrewed position ah!
Three, product quality problems, caused by sliding buckle.
This kind of problem is too common, work delay time, the same is 10 cents of expansion screws, non-standard installation of a slip button, but also install two times, the cost of materials, time and wages can be more than 30 cents, cogreedy cheap to buy inferior products, the solution is very simple, buy pure national standard expansion screws once done!
Warm tip: Push the expansion bolt into the hole on the ground or wall, tighten the nut on the expansion bolt with a wrench, the bolt goes out, but the outer metal sleeve does not move, so the big head under the bolt will expand the metal sleeve, so that it fills the whole hole, at this time, the expansion bolt can not be pulled out.
Previous page
Next page
Related news
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.
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.
Service hotline：13731005599
Tel：13513109909
E-mail：ann@mzfastener.com
E-mail：William@mzfastener.com
Factory address: East Road 107, West Hebeipu Village, Linmingguan Town, Yongnian District, Handan City, Hebei Province
Share with