There are many types of aluminum ladders made by steel ladder manufacturers currently popular, such as ladders that lean against objects, free-standing ladders, ladders that can be hung with hooks, aluminum folding ladders, etc. All kinds of ladders have their advantages, and they are used for ladders that lean against objects. It is very convenient and easy to manufacture, and this kind of ladder is used daily. It is widely used in factories and rural areas. Free-standing ladders with vertical pillars are used in factories, and most of them are used in the repair of aerial electrical appliances. Ladders that can be hung by hooks are used in firefighting or military training, and are relatively common. Folding ladders are more flexible ladders developed in recent years. They have the advantages of the above various ladders. However, the aluminum folding ladders currently sold on the market also have shortcomings, for example, the structure is complicated, the manufacturing is difficult, the weight is large, and it is inconvenient to move and use.
The purpose of the invention of the Multi purpose lightweight aluminum folding ladder is to improve the most complex hinge part of the folding ladder, simplify the structure, make it easy to manufacture, reduce the weight, and improve the handling and use.
How to operate a aluminum folding ladder?
1. Unfold the ladder column outwards by locking, and when you hear a "click" sound, the lock block enters the position, indicating that the hinge has locked this position.
2. Unlock Turn the handle to open the lock, and at the same time the lock block retracts to the position, indicating that the hinge has been unlocked. At this time, you can change the angle of the ladder column or fold the ladder.
*If the handle cannot be moved and the lock cannot be unlocked, this is because the hinge is pressed against the lock block. At this time, the ladder column can be pulled and shaken to release the external force.
3. After checking the expanded state of the ladder, please carefully confirm that all hinges are in the locked position before using it. If there is a hinge with the lock block in position, open its symmetrical hinge, and then fold the ladder column inward about 40 degrees, and then Expand outward to lock the pair of hinges.
a. A ladder with a total length of less than or equal to 4 meters can be used as a straight ladder. At this time, the angle between the ladder and the ground should be greater than 75 degrees, and the hinge in the middle of the lightweight aluminum folding ladder should face the wall;
b. When the four-folding ladder is used as a platform, a flat plate with a thickness of at least 1 cm must be used;
c. When someone is working on the ladder, it is strictly prohibited for others to pull the handle to change the locking state of the hinge.