​Correct support method of screw jack

Correct support method of screw jack
 The main frame is the most important part of the screw jack. It consists of five parts: the upper cover, the outer cover, the nameplate, the handle and the base. Today we will give a brief introduction to the main frame, hoping to be helpful for your future use!           
 Main frame material: mainly made of low carbon high quality alloy steel, but there  are some exceptions, such as: nameplate made of aluminum;           
 Main frame position: The main frame is responsible for the main position of the load-bearing, occupying most of the position of the screw jack;           
 The role of the main frame:           
 1.  Protecting internal threaded rods and other components will not be easily damaged under severe impact.           
 2.  Display the rated load of screw jack, brand, model, date of leaving factory, manufacturer and other information;           
 3.  The design of the handle part makes it more convenient to move the position, so that it can be carried directly.           
 4.  The base area is large, and it is very stable after loading, and it will not tilt or fall down.
 The screw jack can be used in the replacement of automobile tyres, so how to use it correctly when changing tyres?
 According to the relevant understanding, each car has a special support point at the bottom of the jack, which is about 20 centimeters in front of the rear wheel, that is, 20 centimeters behind the front wheel. This part can withstand high pressure, if the jack is supported in other places, it may damage the chassis of the car, and other places bear less pressure. When using the jack, we must pay attention not to slip the vehicle, which will seriously damage the chassis  of the car.           
 When using jacks, we should choose a firm and flat ground to place jacks, so as to prevent jacks from falling into soft soil, which is easy to cause damage to jacks.
 Screw jack is a commonly used supporting and lifting tool for heavy objects. It is easy to operate, easy to carry and widely used. How does the jack complete the lifting operation?            

 The lifting of screw jack mainly depends on the jack rod, and the lifting and falling of the jack rod are coordinated by many parts. It is carried out by applying the principle of force transmission screw. Simply, the operation between parts makes the jack rod screw, so that the weight on the jack rod can also be lifted to a certain extent, so as to achieve the purpose of heavy lifting operation.
 Many friends who have used screw jacks will encounter this situation: the jack can not continue to rise up to half of what to do? I believe that everyone will be more annoyed, even if we are in a hurry, we should calm down to solve the problem, not blindly operate.             

 When the screw jack can not continue to rise, we must stop first, not to  operate the handle, not to use force to move the handle, which is likely to  damage the jack, making the problem more difficult.           
 The screw jack can be safely removed from the car. You can lay a few hard boards under the car, straighten the car up, instead of the jack to bear the pressure of the car, and then take the jack out. After taking it out, you can check whether the jack has broken down. If you can't find it out, you'd better find a specialty. The repairman will check it.