in Overhead Traveling Cranes

1. Product introduction in overhead traveling cranes:

 

A bridge-type crane with a bridge that runs on an elevated track, also known as an overhead crane. An overhead crane is a crane with relatively stable working performance and high working efficiency. It mainly includes bridges, hoisting hoists, and lifting trolleys. For several parts such as electrical equipment and driver's cab, the bridge of the bridge crane runs longitudinally along the tracks laid on the elevated structures on both sides, and the lifting trolley runs transversely along the tracks laid on the bridge, forming a rectangular working range, which can fully The space under the bridge is used to lift materials without being hindered by ground equipment. This kind of crane is widely used in indoor and outdoor warehouses, factories, docks and open-air storage yards.

 

The Dejun brand customized in overhead traveling cranes can be equipped with grabbing devices such as hanging motor grabs and electromagnetic suction cups to meet the needs of lifting various types of materials.

 

2. Features

 

① Hoisting machinery usually has a huge metal structure and a relatively complex mechanical structure. It can complete one lifting, lowering or several horizontal movements. During the operation, there are often several movements in different directions at the same time, which is technically difficult.

 

② The materials to be hoisted are diverse, and the load also changes. The weight can range from tens of tons, or even hundreds or thousands of tons, to the light weight of tens of kilograms; the length can range from tens of meters to less than 1m; the shape is also irregular. There are also granular, hot-melt and flammable and explosive materials, making the lifting work complicated and dangerous.

 

③ Most crane equipment needs to operate within a large range, and some are equipped with rails, steel wheels or tire-type crawlers, which have large space for movement and large danger surfaces.

 

④ There are many exposed moving parts and they are often in direct contact with lifting personnel (such as hooks and ropes), so there are many risk factors.

 

⑤ The working environment is complex. There are lifting equipment in operation in industrial and mining enterprises, ports, construction sites and other places. The operation will also encounter dangerous factors such as high temperature, high pressure, flammable, explosive, power transmission lines, strong magnetic fields, etc. These disadvantages Conditions can pose significant threats to people and equipment.

 

⑥ Operations often require human cooperation and are quite difficult. Operators and commanders are required to cooperate, collaborate and take care of each other skillfully. Operators should have the ability to deal with on-site emergencies.

 

3. Applicable Environment:
 

Dejun brand customized in overhead traveling cranes equipped with hooks are suitable for lifting work in machining, assembly workshops, metal structure workshops, metallurgy and foundry workshops and various warehouses; Equipped with grab buckets, it is suitable for metallurgical, cement, chemical and other industrial sectors or open-air fixed-span handling of bulk materials.

 

Crane working class: A5 crane (For less frequent work, such as general machining and assembly workshops).
 

Crane working class: A6 crane (used for more frequent work, such as auxiliary lifting in metallurgical and foundry workshops).

4. How to operate the Dejun brand customized in overhead traveling cranes?

 

The Double girder overhead cranes has two types of operation on the ground and in the air.
 

There are two types of ground operation: wired handle operation and wireless remote control operation;
 

Aerial operation refers to cab operation. There are two types of driver's cab, open type and closed type, which can be divided into two types of left or right installation according to the actual situation.

5. Methods to prevent wire rope corrosion damage

Steel wire ropes are generally used in the open air. Exposure to the sun and rain will cause corrosion of the wire ropes. Especially for steel wire ropes used in harmful gases and harsh environments, the damage caused by corrosion will be more serious. There are differences in oxygen affinity on the surface of steel wire ropes damaged by corrosion, causing a certain local metal on the surface to become an anode, and another adjacent local metal to become a cathode, forming a large number of small batteries. Under the influence of small batteries, many circular corrosion pits are formed on the surface and gradually deepen. These pits become stress concentration points and the source of fatigue cracks. At the same time, corrosion reduces the cross-sectional area of the wire rope, its elasticity, and its ability to withstand impacts.

 

There are two ways to prevent corrosion and damage to wire ropes. One is to apply oil frequently. Oiling is essential for wire ropes that are often in motion. The hemp core of new steel wire ropes generally contains 12% to 15% of grease, while the scrapped steel wire ropes only contain 2.4% of grease in the part with the greatest loss. At the end of the same wire rope, even if it has not passed through the pulley, it still contains 12.7% to 14.5%. of grease. Tests have shown that the number of broken wires in oiled steel wire ropes in the later stages of the test is about half that of unoiled wire ropes. The initial oil content of a steel wire rope can only last 40% of its life. If it is not refueled, the number of broken wires will increase sharply. Second, special steel wire ropes such as galvanized and aluminized can be selected for steel wire ropes that are used in harsh environments and have relatively little movement. When these steel wire ropes are exposed to the atmosphere, the zinc-plated or aluminum-plated surfaces will form zinc hydroxide and aluminum hydroxide films, which can effectively prevent corrosion of the steel wire ropes.

 

Hot Tags: in overhead traveling cranes, China in overhead traveling cranes suppliers, manufacturers, factory