Material: Carbon steel, alloy steel
Specifications: 0.5T, 0.75T, 1T, 1.5T, ....... 3OT
Color: Red, Yellow, White Galvanized, Black, etc., and can also be custom-made according to customer's requirements.
The use and precautions of the ring eye hoist
When the ring eye hoist is used with the rigging, attention should be paid to the environmental conditions. At the same time, the rigging should not be twisted or knotted during use. During the hoisting process, it is strictly prohibited to allow the hoisted items to be subject to impact or collision.
Currently, the ring eye hoist hook is generally a forged single hook, and cast hooks are not allowed to be used on cranes. The ring eye hoist hook is widely made of low carbon steel and carbon alloy steel.
The hook plays a role in connecting the crane and the heavy load, and it is essential to pay attention to its maintenance and maintenance work. Therefore, when the hoisting height limit switch or the hook locking device is malfunctioning or damaged, it must not be used; as for working without a license, the leadership should be held accountable. To ensure safety, the hook must be inspected. When any of the following conditions are found, it should be immediately scrapped.
Cracks appear.
The wear amount of the dangerous section of the hook manufactured according to GB10051.2 shall not exceed 5% of the original height; for hooks manufactured according to industry standards, it should be greater than 10% of the original size.
The opening degree has increased by 15% compared to the original.
④ Twisting deformation exceeds 10 degrees.
⑤ The dangerous section or the hook neck shows plastic deformation.
When the wear of the plate hook liner reaches 50% of the original size, the core sleeve should be scrapped.
When the wear of the plate hook shaft reaches 5% of the original size, the shaft should be scrapped.
One more thing to note, the above defects on the hoist hook cannot be welded.
The main method for inspecting hoist hooks: generally, it is done visually, using a magnifying glass to carefully observe. If necessary, staining methods or non-destructive testing can be used. The wear amount of the dangerous section can be measured with calipers or a clamp; the inspection of the opening degree is as simple as comparing the measured size with the original size or the standard hook opening. Here, I introduce a simple and practical method: when a new crane hook is first used, small holes are punched on both sides of the hook opening, and the distance between the two holes is measured and recorded. This can be used for comparison with the dimensions after the hook deforms to judge the change in the opening degree. Twist deformation can be visually measured, or it can be measured with the side of a steel ruler, and when precision is required, a drawing ruler can be used on a platform to detect. Items 5, 6, and 7 can all be visually measured or checked with calipers.
