5 Ton Double Beam Eot Crane with Double Trolley Hook

1. Product Introduction:

5 ton Double Beam Eot Crane with Double Trolley Hook is the basic type of overhead crane, the crane consists of two parallel girders held together by cross members, creating a strong and stable base for lifting and transporting heavy items. The beams are made of high-quality steel, ensuring that they can withstand the stress of heavy lifting and long-term use. 

Large-tonnage overhead cranes generally have two hoisting systems: the main hoisting system and the auxiliary hoisting system, which can also be called the main hook and the auxiliary hook.

The double trolley hook system is another outstanding feature of this crane. It consists of two independently controllable trolley hooks, allowing the user to lift and move two items simultaneously. This greatly increases the efficiency of lifting and moving heavy loads, allowing bigger jobs to be done in less time.

In general, the main hook has a large lifting tonnage, a slow lifting speed and low efficiency; the auxiliary hook has small lifting tonnage, fast lifting speed and high efficiency; the two hooks of the crane are generally operated independently. In special cases, the main and auxiliary hooks can also be used together to complete the operation process. The working Class is different according to the working conditions: A5-A8.

2. Component:

The hoisting action of the crane, the operation of the trolley and the operation of the trolley work together to form a three-dimensional space, so that the material can be hoisted to any position in the hoisting workspace.

Large-tonnage overhead cranes generally have two sets of hoisting systems, which are mainly composed of box bridges, hoisting trolleys, cart operating mechanisms and electrical control systems. The retrieval device is the two hooks on the lifting trolley.

The trolley runs left and right on the girder, which is mainly used to move the lifted weight to a more precise position. The operation of the trolley is the same as that of the cart, but the directions that can be run are different. The running directions of the trolley and the cart are just perpendicular to each other.

The main hook is the main hook, which has the following characteristics: large lifting capacity and slow lifting speed. Most of the work of the crane is done by the main hook, especially when lifting heavy materials. After the rated lifting capacity of the auxiliary hook is exceeded, it can only be lifted by the main hook for safety reasons.

The auxiliary hook plays an auxiliary role and can also be used to lift heavy objects alone. The lifting speed is faster than the main hook, which can improve the lifting efficiency of light goods. But the lifting weight is lower than the main hook, about 1/5~1/3 of the main hook. Generally, it is a better choice to use the auxiliary hook when the hoisting weight is relatively light and the speed requirement is relatively high.

3. Applicable Environment:

The Double Beam Eot Crane with Double Trolley Hook is 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.

In addition to being suitable for the loading, unloading and handling of ordinary heavy objects, the double-girder overhead crane can also be equipped with a variety of spreaders for special operations.

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

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

When used in the open air with rain-proof equipment, the total weight and wheel pressure of the outdoor crane will increase by about 5%. The crane is divided into two working systems: intermediate (A5) and heavy (A6) according to the busyness of use. When selecting, the technical requirements such as working system, working environment, temperature and type of power supply should be indicated.

4. Operation skills of double hook crane

Whether the main hook or the auxiliary hook is used in the lifting operation mainly depends on the weight of the heavy object, which requires the driver to accurately estimate the weight of the lifting object to avoid overloading the auxiliary hook or the main hook being too light.

When the main and auxiliary hooks lift a heavy object at the same time, it should be noted that the auxiliary hooks cannot be overloaded, and one hook should be operated one by one during operation. Because the main and auxiliary hooks have different speeds and start at the same time, it is easy to cause accidents such as instability or overturning of the hoisted weight; and because of the fast speed of the auxiliary hook, the auxiliary hook will lift the entire heavy object first, resulting in overloading of the auxiliary hook.

When the auxiliary hook lifts a heavy object at the same time, when it is falling, the balance of the heavy object should be kept, and the descending speed of the auxiliary hook should be controlled to prevent the heavy object being lifted from being unstable or turning over.

5. Operation taboo of double hook crane

When the main and auxiliary hooks of the double-hook crane are replaced, the two hooks are not allowed to start the two hooks at the same height, otherwise the driver only pays attention to the falling hook and ignores the rising hook. It will pass the winch, causing the "hook going to the sky" accident.

It is not allowed to start the main and auxiliary hooks at the same time, and start the large and small trucks at the same time, otherwise the rising hook will swing severely. If the lifting height limiter is a heavy hammer type, and the swing exceeds the lever of the heavy hammer, even if the height limiter works normally at this time, since the hook pulley block does not touch the lever of the heavy hammer, it may cause "" Hook up to the sky" accident.

It is forbidden to pursue fast and efficient lifting operations without replacing the hook in time, resulting in overloading of the auxiliary hook.

It is forbidden to lift two heavy objects at the same time with the main and auxiliary hooks. Due to the distraction of energy, the operation becomes more difficult and accidents are likely to occur.

6. Transportation:

Shipping way: by sea, air, land, and Express such as DHL, TNT, UPS, FEDEX. We will choose the suitable shipping method according to your requirements.

7. Frequently Asked Questions

What's your warranty period?

12 months from cranes accepted;

Could your winches drag inclined?

No.

8. Eot Crane use and maintenance

Before the lifting equipment leaves the factory, identity records must be kept. Safety inspection and maintenance before equipment installation: Check the integrity of the performance of each main mechanism of the equipment, check the visible defects of the main steel structure and connecting parts and their pins and bolts, check the anti-corrosion condition of the equipment surface, form a record, and issue installation opinions.

Lifting and hoisting equipment must be maintained by dedicated personnel. After the equipment is delivered for use, daily maintenance shall be the responsibility of the equipment operating driver or full-time personnel of the user unit. The installation and  maintenance unit shall be responsible for the supervision and inspection of daily maintenance content. The main content of daily maintenance can be summarized as the "cross operation method": cleaning, tightening, lubrication, adjustment, and anti-corrosion. 10 to 30 minutes before and at the end of the shift every day, inspect all parts and parts of the equipment to see if they are normal, refuel and lubricate according to regulations, pay attention to whether the sound of mechanical operation is normal, and do a good job of cleaning and shift handover to ensure that the equipment looks tidy and operates normally. For this purpose, daily maintenance records and shift handover records should be made into fixed forms and managed as files.

Lifting and hoisting equipment must undergo regular professional physical examinations. Regular inspection and maintenance during the use of the equipment: Carry out several maintenance and repairs on the mechanical equipment within the specified time, focusing on cleaning, lubrication, adjustment, disassembly and overhaul. This is usually done by maintenance personnel and operators.

After the Eot Crane leaves the factory, there is generally a running-in period of about 60 hours (some are called the run-in period), which is stipulated by the manufacturing factory based on the technical characteristics of the crane in the early stages of use. The running-in period is an important step to ensure the normal operation of the crane, reduce the failure rate, and extend its service life. However, some users ignore the special technical requirements of the new machine's running-in period due to lack of common sense in using Eot Crane, tight construction schedule, or wanting to get benefits as soon as possible. Some users even believe that the manufacturer has a warranty period anyway, and the manufacturer is responsible for repairing the machine if it breaks down. Therefore, the machine is overloaded for a long time during the running-in period, resulting in frequent early failures of the machine. This not only affects the normal use of the machine, but also The service life of the machine is shortened, and the progress of the project is also affected due to damage to the machine. Therefore, full attention should be paid to the use and maintenance of the Eot Crane during the running-in period.

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