How to distinguish the quality of screw jack

How to distinguish the quality of screw jack
 Today we talk about screw jacks. When it comes to screw jacks, we can know that they are the general name of screw jacks and rack jacks. When it comes to the quality identification of screw jacks, we have to distinguish them from each other. Let's give you a brief introduction.
 Screw jack is a common lifting equipment. It is easy to operate, easy to carry and  widely used. Some people think that as long as the screw jack can lift the weight, it can be used arbitrarily. This view is wrong. As the saying goes, there are specialties in the art industry. Although screw jacks can lift weights widely, they can not be used in any occasion to work. If they are not used properly, they will be dangerous.           
 The screw jack operates purely screwly and closely interlocking rings. It is simple  and compact in structure, small in volume and light in weight, easy to carry, simple in operation and can lift heavy objects easily. It is suitable for factory warehouse, bridge wharf, vehicle overhaul, construction engineering and other work sites. It is not suitable for automobile tyre replacement and cutting. The jack is compact, convenient and easy to operate. It is more suitable for the replacement of automobile tyres.
 Rack jack of screw jack, rack jack is a kind of simple structure, lighter jack, rack jack is divided into scissors jack and L vertical jack. The only disadvantage of these two jacks is low weight, but for the maintenance of small cars, the use is still very large. Because it is a manual jack, it depends on the quality of the rocker and the material of the body, as well as whether the surface is rough, the color is bright and so on. This is the quality problem we can test  with the naked eye.           
 The screw jacks have a higher weight than rack jacks. It is especially concerned that the true and false screw jacks on the market are difficult to distinguish. Because you can't recognize many renovated jacks on the market now, we still need to go to regular manufacturers to buy them so as not to buy substandard products. Products affect our construction.           
 For this screw jack, the best way to distinguish between good and bad is to look at their manufacturers, production dates, production numbers, anti-counterfeiting signs. If these are not aware of the high quality conditions, then it is one of the three non-products, we must not buy.
 Last but not least, you may think that the helical Jack fuselage is cast iron, so in the absence of hammer, you can use the downward helical Jack to do knocking operation. This method is obviously wrong. Why can't the jack knock?
 Screw jack is used for lifting operation. Please use it according to its working principle and performance. Many people ignore the existence of this problem and cause damage to the machine. But if you use the wrong way and cause damage, please communicate with the technician and take reasonable maintenance to remedy your damage. Here comes the jack.            

In peacetime work, we are responsible for mastering our responsibilities and doing well the work we undertake. Everyone tries his best to do it. Screw jack is no exception. It shows his talent according to his own performance, instead of adding more unnecessary burdens to it.