Application and classification of hardware rigging
My country's hardware rigging industry has developed rapidly in recent years. Rigging refers to the equipment used in conjunction with ropes, and slings are auxiliary materials for production and construction. The development of the sling market is closely related to economic development. The Chinese sling market has always been the coexistence of European and American companies and domestic private enterprises, and the coexistence of high, medium and low producers.
Rigging is widely used in ports, electric power, steel, shipbuilding, petrochemical, mining, railway, construction, metallurgy and chemical industry, automobile manufacturing, construction machinery, paper machinery, industrial control, logistics, large-scale transportation, pipeline auxiliary equipment, marine rescue, Marine engineering, airport construction, bridges, aviation, aerospace, venues and other important industries.
Hardware rigging products mainly include the following:
The lifting ring nut refers to the part that the nut and the bolt or the screw are screwed together for fastening, and it is an original part that all production machinery must use. The lifting ring nut is a commonly used fixing pendant in engineering. There is a thread under the nut, which can be drilled according to its different specifications and fixed by the screw.
The lifting ring nut is a part that tightly connects the mechanical equipment. It can be connected together through the inner thread, the lifting ring nut and the screw of the same specification. Lifting ring nuts are often used in conjunction with externally threaded columns to lift various equipment, such as molds, chassis, motors, etc.
Shackles are detachable annular metal members used to connect various rope eye loops, chain links and other rigging. The shackle consists of two parts: the body and the cross bolt. Some horizontal bolts have threads, some have pins, and there are two common types of straight shackles and round shackles. Shackles are often named according to the parts used, such as the anchor shackle used on the anchor rod; the anchor chain shackle used on the anchor chain; the rope head shackle used on the rope head.
The chain rope is a chain composed of no gear links. It is often used on ships as rudder chains, short chains for lifting cargo, heavy chains, and adjusting links for safety cables. It is also used for pulling and binding. The size of the chain cable is expressed in terms of the diameter of the chain link in millimeters (mm). Its weight can be calculated from the weight per meter of length.
When using the chain cable, the chain ring should be adjusted first to avoid lateral force, and sudden force should be avoided to prevent the chain cable from breaking. Chains should be checked and maintained frequently to maintain good technical condition. The contact part between the chain ring and the chain ring, the chain ring and the shackle is easy to wear and rust. Pay attention to the degree of wear and rust. If it exceeds 1/10 of the original diameter, it cannot be used. You should also pay attention to check whether the chain is damaged or not for cracks. When checking, you should not only check from the appearance, but use a hammer to hit the chain links one by one to see if the sound is crisp and loud.
The rope clip of the wire rope is mainly used for the temporary connection of the wire rope and the fixing of the rear hand rope when the wire rope is passed through the pulley, and the fixing of the rope head of the wind rope on the pick rod, etc., including phosphating coated wire rope, galvanized wire rope, stainless steel wire rope Wire rope and smooth wire rope. It is the most widely used wire rope clamp in hoisting operations.
A hook is a tool used to hang goods or equipment and is made of steel. The hook is divided into three parts: the hook handle, the hook back and the hook tip. According to the direction of the upper eye ring of the hook handle, it is divided into front hook and side hook. The hook tip of the front hook is perpendicular to the plane of the upper eye ring of the hook handle, and the hook tip of the side hook is on the same plane as the upper eye ring of the hook handle. . Ordinary cargo hooks mostly use broken side hooks.
Commonly used metal slings mainly include: wire rope slings, chain slings, shackles, hooks, slings (clamps), magnetic slings, etc. Rigging includes: D-rings, safety hooks, snap hooks, tight riggings, link double-ring buckles, American style, lifting ring bolts, etc. They need to be stored after use to ensure the service life of hardware rigging.