Single girder cranes are more affordable as compared to a double girder crane. This is because a single girder crane has just one cross girder and the design of the trolley is simple as compared to the other. Also the freight for a single girder crane is lesser thus the low price. Whatever we buy, we all want to prolong the lifetime of our overhead crane. And can your single girder crane’s service life reach 25 years?

If the service life of your eot crane can not reach 25 years, nucleon crane engineer recommends you to buy the inverter overhead crane. However, the only disadvantage of inverter overhead cranes is the relatively high price. There is a saying that we all have heard: cheap things are only “cheap” one advantage, expensive things only “expensive” this one shortcoming. As a new-type crane, inverter cranes are advanced in many aspects than ordinary cranes. Let’s take a look at the four major advantages of inverter overhead cranes:

1. maintenance-free: because of good quality, fewer failures, more than three or five years do not need maintenance.
2. Long service life: The inverter used by the frequency conversion crane can protect the electric hoist and the electrical system, and can effectively extend the service life for 25 years.
3. Smooth operation and low noise: It solves the problem of large noise and unstable operation of traditional eot cranes.
4. Safety: The safety protection device of the frequency conversion crane is complete, eliminating potential safety hazards.

If you have a relatively high demand for eot cranes, then choose a variable-frequency crane. The overhead cranes usually take a long time. A good quality eot crane can save you a lot of trouble during use. The extra price is definitely worth it. Nucleon crane produces kinds of high quality overhead cranes with the most competitive prices. Welcome to visit our factory.

As we all know that bridge cranes are widely used in metalworking workshops, assembly workshops, metal mechanism workshops, maintenance workshops, various types of warehouses and other occasions. They can also be used for metallurgy and foundry workshops to assist in lifting. After considering the requirements of wind and rain protection and improving the design, it can be used in open space. However, do you know which factor is related to the service life of double girder crane?

The degree of crown on the main girder of the bridge crane is strictly required. It can be seen how heavy the crown of the girder is for the bridge crane. Also, the degree of crown of the upper girder crane is an important technical parameter of the bridge crane. The service life of the overhead crane. Therefore, the inspection of the main girder is very important.

In the bridge structural steel, the degree of gravity of the main girder of the main girder also has certain influence. According to the manufacturing process of the bridge crane girder, the main girder, end girder, walking platform, trolley track and living end beam link plate components are synthesized into a bridge. Through many years of production practice, it has been found that when the double girder eot crane is carrying out the bridge structure, the self-weight of the main beam will inevitably cause the lower deflection, and due to the difference in the position of the bracket, the lower deflection value caused by the self-weight of the main beam is different, and thus the measured main The value of the crown on the beam is also different.

Only when the bracket is placed under the center line of the span of both ends of the bridge, the measured value of the crown on the main beam is accurate and does not need to be corrected. When the bracket is located in the bridge structure in the broken beam and actually carries out the bridge structure, according to the welding process requirements for the main beam and the end beam assembly, two brackets are often placed on the main beam in order to facilitate the insertion of the main beam into the end beam.

overhead cranes are the same as automobiles. After a period of use, even if there is no obvious failure, the overhead crane still needs to be maintained. This is to ensure that the crane can be used normally in the future.

Its maintenance mainly includes daily inspection, monthly inspection and annual inspection. According to the actual use situation, most units are inspected and maintained once every 3 to 4 months. Generally, daily inspections are completed by operators, mainly to check whether the control system of the bridge crane is faulty, whether there are hidden dangers in the metal structure, protection devices, and whether each working mechanism and operating mechanism are normal.

Relatively speaking, monthly inspections should be comparatively inspected, such as whether the electrical control system has any electrical components loose, whether the lubrication points of the bridge crane need to be lubricated, whether the protection devices are sensitive and effective, etc., and find potential hazards in a timely manner and perform maintenance.

The annual inspection focuses on the performance of the crane on the basis of daily and monthly inspections, inspects the electrical components and cables of the crane for aging, and replaces vulnerable parts such as wire ropes and brake pads. Whether the metal structure is deformed, whether the track is worn or not, etc. need to be carefully investigated.

The hook is also a relatively large fetching device used in bridge cranes. It bears all the loads of the lifting. During the use, once the hook is damaged and broken, it may cause a major accident. The cause of the damage and fracture of the hook is that the hook is cracked, deformed, and damaged due to friction and overload.

In order to prevent the hook from malfunctioning, overload lifting is strictly prohibited during use. During the inspection, attention should be paid to the opening degree of the hook and the wear of the dangerous section. At the same time, the hook should be annealed regularly.

The overhead crane is a lifting device transverse to the workshop, warehouse and shell. Because its end is located on a high concrete column or metal bracket, it is shaped like a bridge. Bridge cranes are widely used in engineering and production, but there will be many problems in the process of use.

Controlling the deformation of welding is to fully understand the cause of the deformation, and it is helpful to take appropriate measures according to the specific situation, thereby reducing the degree of welding deformation to a small value, making the structure appropriate and reasonable, better improving the various properties of the crane, and providing more Good structure.

Under normal conditions, the main cause of welding deformation of bridge cranes is caused by uneven heat input. The amount of heat input is closely related to the material and structure of the welding. Material factors and structural factors affect the movement of the metal around the heat source, making it simultaneously affected by the internal and external binding forces, resulting in the production of welding materials. Stress-deformation welding deformation mainly includes shrinkage deformation (longitudinal shrinkage and lateral shrinkage), bending deformation, angular deformation, wave deformation, twisting deformation and other types. It is reflected in the external structure of the bridge crane that shows local uplift, distortion, bending and distortion.

Welding deformation mainly includes shrinkage deformation (longitudinal shrinkage, lateral shrinkage), bending, angular deformation, wave deformation, twisting deformation, etc., reflecting the external structure of the bridge crane, showing local bulging, twisting, bending and distortion.

In the welding process, these problems are caused due to many reasons, for example, the size of the weld is insufficient, the number of welds does not meet the predetermined standard, the location of the weld, and the designed location, welding material. The thermal physical properties are not strong, the construction process is not conducive to achieving a good welding state, the selection of welding parameters, etc., each specific link must be carefully mastered to effectively achieve the desired effect.

With the development of crane, all kinds of overhead cranes would be used in more and more industries, such as Single Girder Overhead Crane, double girder overhead crane with electric hoist, heavy duty double girder overhead crane, But, do you know to choose the best-matched cranes? Here, let me introduce some instructions.

Step 1: make clear the application environment

You need to know where the crane is used, workshop, open pit, subway construction, steel or iron factory, etc. You must make this clean, then you can choose the suitable cranes.

Step 2: take a look at the specifications

Specification is very important! After you make clear the application environment, you need to know the crane specifications to make sure if the crane is fit for the application environment. These specifications include span, lifting height, lifting weight, lifting speed, hoist travelling speed, working class, working voltage, ambient Temperature, crane travelling speed, total weight, rail recommended  mode, total motor power, main dimension, rail top to crane top, rail top to hook center, crane base distance, crane width, hook left limitation, hook right limitation, etc.

Step 3: pay more attention the parts

There are various parts in the overhead, and they are important. You need to check if the parts are completed, check if the parts size is suitable, and check if the mark is clear, etc. Detail is important.

Step 4: focus on the brand

Yes, the most important thing to choose an overhead to choose the brand. A good brand means good overhead crane quality and good service. Weihua group mainly deals in researching, developing and producing the lifting machinery, such as overhead crane, gantry crane, port crane, marine crane, hoist and winch, mining machinery, industrial vehicle, and various parts of cranes.