What preparations should be done before using the ladder. 1. Make sure that all rivets, bolts, nuts and movable parts are tightly connected, the ladder column and step are firm and reliable, and the extension circlips and hinges are in good working condition; 2. Keep the ladder clean and free of slippery substances such as grease, oil, wet paint, mud, and snow; 3. The operator’s shoes are kept clean, and leather-soled shoes are prohibited.
Aluminum alloy ladder Do not stand within 1 meter from the top of the ladder during operation On the steps of the ladder, always keep a safety height of 1 meter, let alone climb the high support point at the top; when climbing, people face the ladder, hold both hands firmly, and keep the center of gravity in the center of the two ladder columns.
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. 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. When this is , you can pull the ladder column and shake to release it. external force.
Generally, it can be judged by checking the glossiness of the profile surface by the material, if it is a ladder made of recycled materials The surface is dull or pale, with no gloss (basically non-reflective), the touch feel is relatively rough, the surface made from the new material has very good gloss, the touch feel is relatively smooth and delicate; you can also see the toughness of the material, qualified aluminum The alloy material should be able to return to its original state immediately after being squeezed by the allowable external force. If it cannot be restored immediately, then this kind of ladder has a great safety hazard.
First open the ladder to take a look. If the ladder creaks as soon as it is opened, it is definitely not a good ladder. When a good ladder is opened and closed, there is no sound. When the ladder is opened, whether the level can be put upright, such as shaking, check whether it has long or short feet, and also check the materials and workmanship of the accessories.