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The fault diagnosis and maintenance of overhead crane mainly include the following aspects: 1.Electrical fault: The electrical system of overhead crane is an important part of it. Common electrical faults include cable aging, poor contact, motor overload, etc. For these faults, first check whether the cable is damaged. If damaged, it needs to be replaced in time; secondly, check whether the contactor and relay are working properly. If there is a problem, they need to be repaired or replaced; in addition, check whether the load of the motor exceeds the rated load. If it exceeds, the load needs to be reduced or the motor needs to be replaced. 2.Mechanical fault: The mechanical part of the overhead crane is also prone to failure. Common mechanical faults include gear wear, bearing damage, brake failure, etc. For these faults, first check and clean the mechanical parts. If the gear is found to be severely worn, it needs to be replaced; secondly, check whether the bearing is working properly. If there is a problem, it needs to be lubricated or replaced; in addition, check whether the brake is flexible and reliable. If it fails, it needs to be repaired or replaced. 3.Operation problem: Operation…
In recent years, the field of overhead crane has experienced significant technological advancements. These innovations are designed to improve efficiency, safety and sustainability, making overhead crane more intelligent and versatile in various industrial applications. Here are a few key areas of technological innovation: 1.Automation and intelligent control One of the most transformative changes in overhead crane is the introduction of automation and intelligent control systems. Modern overhead crane are equipped with advanced sensors and software that enable autonomous or semi-autonomous operation, enabling precise movement and reducing human error. Through the integration of the Internet of Things (IoT), crane can provide data on real-time performance, usage patterns and maintenance needs, significantly reducing downtime.For example, smart crane are equipped with remote monitoring systems that allow operators to operate from a distance, ensuring safe operations in hazardous environments. Automatic features like anti-sway control also help maintain stability when lifting heavy loads, even in difficult environments. 2.Energy-saving design Sustainability has become an important concern and overhead crane are no exception. The application of energy-saving motors and regenerative braking technology enables the crane to recover energy during the braking process. The recovered energy can be used for other operations or fed back into the grid,…
Crane pulley is an important part of the crane. Its main function is to change the direction of the crane’s running rope and increase or decrease the mechanical advantage of the crane as needed. Specifically, the functions of the crane pulley include the following aspects: In terms of manufacturing and process, crane pulleys need to go through a rigorous design and material selection process. The key processes include:Material selection: Select wear-resistant and corrosion-resistant materials, such as steel, alloy steel or special coating materials, to ensure that the pulley is not damaged during long-term use.Manufacturing accuracy: The manufacturing accuracy of the pulley is high, especially the geometric dimensions, surface finish and running matching accuracy of the rim and flange, which directly affect the stability and safety of the crane operation.Surface treatment: The pulley surface is specially treated, such as heat treatment, plating or spraying, to enhance its wear resistance and corrosion resistance.Assembly and commissioning: The assembly and commissioning process of the pulley needs to be strictly controlled to ensure that the various components are well matched, the pulley can operate smoothly, and achieve the service life and safety performance required by the design.In general, the crane pulley not only plays a…
1. Choose according to the requirements of the workplace. Because pneumatic hoists are explosion-proof and corrosion-resistant, pneumatic hoists should be the first choice in some flammable, explosive, high-temperature, high-dust, and highly corrosive industries, such as the chemical industry, petroleum coal mines, and oil storage. When the environmental requirements are not so high, electric hoists can be selected in mining engineering, general equipment manufacturing, maintenance, and logistics industries. 2. Choose according to the weight range of the load. The minimum load capacity of pneumatic hoists is 250kg, and the maximum load capacity can reach 100 tons. The minimum load capacity of electric hoists is 490kg, and the maximum load capacity can reach 30 tons. Therefore, it is more appropriate to choose pneumatic hoists when the load range is larger. If you choose electric hoists, there may be mismatches for later production lines or product upgrades. 3. Choose according to the working frequency. Conventional electric hoists have a fixed speed and are relatively slow, while pneumatic hoists have adjustable speeds and are relatively fast, so pneumatic hoists should be preferred in situations where variable speed operation and high-frequency operations are required. 4. Choose according to the accuracy of the operation. The positioning…
The setting and calculation method of the guy rope of the Gantry Crane is crucial to ensure the stability of the crane under wind load. The following are some key points about the setting and calculation of the guy rope of the gantry crane: 1. Setting of guy rope 1.1. Setting position The guy rope is usually set on the top of the upper beam or leg of the gantry crane to help stabilize the structure and reduce the impact of wind load on the crane. The installation position of the guy rope should be determined according to the design of the gantry crane and the actual working environment. It is usually set in a symmetrical position to ensure balanced force. 1.2. Number of guy ropesUsually, the number of guy ropes of the gantry crane is determined by the design requirements and the results of wind load calculation. Common settings have two or more guy ropes.1.3. Guy rope specificationsThe specifications of the guy rope should be selected according to the required strength and durability. Commonly used materials include high-strength steel wire rope or synthetic fiber rope. The diameter and strength of the wire rope should meet the design specifications.1.4. Installation…
The factors to consider when choosing a semi gantry crane also apply to a gantry crane. 1.Selection of single girder and double girder semi gantry craneIn general, the lifting capacity of a semi gantry crane is below 50t and the span is within 35m. If there are no special usage requirements, it is recommended to use a single main beam type. If the width of the door legs is required to be large, the working speed is high, or heavy or long items are frequently lifted, it is advisable to choose a double beam semi gantry crane. 2.Span and cantilever length of semi gantry craneThe span of a semi gantry crane is an important factor affecting the quality of the crane itself. In the selection process, while meeting the equipment usage conditions and complying with the span series standards, the span should be minimized as much as possible. 3.Principles for determining the wheelbase of semi gantry crane (a) Can meet the stability requirements of the gantry along the direction of the crane track;(b) The external dimensions of the goods should be able to smoothly pass through the leg flat steel frame;(c) Pay attention to making the wheelbase B proportional to…
I Possible impacts of typhoons on outdoor cranes II Precautions and key points for response and prevention III Disposal measures during and after the event
In the construction of power plants, overhead crane are a widely used lifting machinery. They are frequently used, have a large workload and large vibrations, so the failure rate is high, which brings many adverse effects to the construction. During the electrical installation and commissioning of overhead crane, scientific and reasonable construction methods are the key to ensuring the quality of installation. The installation of electrical equipment and the laying of wires of overhead crane should be carried out strictly in accordance with the attached electrical schematics, wiring diagrams, electrical equipment general diagrams and corresponding specifications. Before the electrical installation of overhead crane, you should be familiar with the relevant electrical diagrams and technical conditions in detail, understand the interaction and operation principles of each component, so as to quickly deal with problems that occur during installation and commissioning. All electrical equipment and components should be cleaned and checked before installation. All electrical equipment and components should be free of defects, should operate flexibly, and should not be stuck or loose. The models, specifications, and closing order of contacts of electrical equipment and components must comply with the drawings. 1.1. Motor First, make a general appearance inspection, turn the coupling…
Double girder overhead crane has superior performance, compact structure, light weight, reliable and easy operation, and can meet various working conditions. It can reduce the overall investment of the plant, improve production efficiency, reduce maintenance costs, and save operating energy consumption. 1. The structure of double girder overhead crane 2.Transmission principle of double girder overhead craneThe movement of the general overhead crane is composed of three movements: the longitudinal movement of the trolley, the transverse movement of the trolley and the up and down movement of the hook.
In the first half of 2024, China’s main export countries of overhead cranes and gantry cranes include India, Vietnam, Thailand, the United Arab Emirates, Russia and other emerging markets. In the process of infrastructure construction and industrialization, these countries have a strong demand for overhead cranes and gantry cranes. demand has increased significantly. Export products mainly include single-girder overhead cranes and gantry cranes, double-girder overhead cranes and gantry cranes, and container overhead cranes and gantry cranes. Among them, single-girder overhead cranes and gantry cranes are due to their simple structure and low price. Relatively cheap, they have become the main products for export. Double-girder overhead cranes and gantry cranes are favored by some large-scale engineering projects because of their high load-bearing capacity and wide range of applications. Container overhead cranes and gantry cranes are mainly used. For container handling in ports and logistics parks, market demand is growing steadily. According to customs data, in the first half of 2024, China’s export volume of overhead cranes and gantry cranes reached 3,500 units, a year-on-year increase of 15%. Export volume reached US$1.2 billion, a year-on-year increase of 20%. Among them, the demand in the Indian market is very strong, with export volume…
1. First installation of overhead traveling crane 2. Installation of rails before installation of overhead traveling crane 3. Lifting of overhead traveling cranes The overhead traveling crane (not equipped with electric hoist) is unloaded at the user’s equipment site, and the electric hoist is installed by the assembler. When installing the electric trolley and the two-wheel trolley, the adjustment pad should be installed on the bolts between the two wall panels according to the width of the I-beam rail to ensure that the gap between the side surface of the lower fender of the I-beam and the edge of the wheels on both sides is 3-5mm. After adjustment, the electric hoist is fixed to the midpoint of the main beam with a rope.Professional lifting personnel use the structure of the other workshop for lifting or use the mast for lifting. Lift the tread of the end beam of the overhead crane to 30mm from the top of the rail. The crane slowly descends and moves left and right to align the center line of the four-wheel tread with the center line of the rail. 4. On-site equipment commissioning of overhead traveling cranes 5. Trial operation of overhead traveling crane Newly installed cranes…
In order to ensure the stability of the crane, the following are some common measures: In short, in order to ensure the stability of the crane, it is necessary to take corresponding measures from the aspects of foundation, installation, use, inspection and safety protection devices.
Crane brakes are a crucial safety component in cranes that play a vital role in ensuring accurate stopping or holding of the crane at a desired position. The performance of the crane brake directly affects the safety and reliability of the crane, making selecting, using and maintaining the correct brake an essential consideration. The most common types of crane brakes and their characteristics are: 1. Electromagnetic brakes: Electromagnetic brakes use the principle of electromagnetic fields to achieve braking. They have the advantages of simple structure, quick braking and easy control, making them the most widely used type of crane brakes. 2. Hydraulic brakes: Hydraulic brakes use hydraulic oil pressure to operate. They offer large braking force, smooth braking, low noise and are suitable for large cranes. 3. Manual brakes: Manual brakes are operated manually and have the advantages of simple structure and ease of use, making them suitable for small cranes. 4. Safety brakes: Safety brakes are automatic braking devices that activation during emergencies to quickly stop the crane to protect the safety of workers. The selection of a crane brake should take into account the type and size of the crane, working environment, braking torque, braking speed and reliability. During use, correct installation,…
In February 2020, Henan FLAG Crane Company was selected by the EPC to provide an overhead crane for the Azito’s phase IV power Plant, located in the Yopougon district of Abidjan in Cóte d’lvoire. In March 2024, AZITO ENERGIE had the plan to remove the rotor of the Gas Turbine (GT) for repair works the first time since in operation. Due to the highly sensitive requirements of this activity. AZITO ENERGIE requested FLAG Crane to send an engineer to fully restore the functionalities of the crane. and to assist till the rotor is removed from the GT casing. On May 13th, 2024, AZITO ENERGIE tested the FLAG Crane’s 95t overhead Crane in all aspects along, with Azito’s subcontractor GE’s team responsible for the removal of the rotor. and the crane worked fully in accordance with the requirements and at the satisfaction of all parties. On May 14, 2024, AZITO ENERGIE successfully removed the Gas Turbine rotor. which enables us to be on the right track, to contribute to the security and the stability of the country’s power sector.
The main models of bridge cranes are: double beam bridge cranes, single beam bridge cranes, and European bridge cranes.
Jib cranes are characterized by high efficiency, flexibility, and multi-function, and can meet the needs of various complex industrial operations. This article will introduce several important areas of jib cranes in industrial applications to demonstrate their outstanding advantages and practical application value. 1. Construction field: Jib cranes are widely used in building construction. It can efficiently carry out various lifting tasks, such as handling concrete, steel bars, building materials, etc. Through the flexible operation of the cantilever crane, a wide range of operations can be realized in a small construction site space, improving construction efficiency and reducing labor costs. 2. Port and logistics field: Jib cranes play a key role in ports and logistics. It can realize accurate positioning and efficient loading and unloading of large cargo. The large lifting capacity and cantilever length of the cantilever crane enable it to meet the needs of heavy-duty operations such as loading and unloading ships in ports and container stacking, and improve logistics efficiency. 3. Energy and mining fields: Jib cranes have a wide range of applications in the energy and mining sectors. It can be used to install and maintain wind turbines, solar panels, and more. At the same time, in…
How much does use an overhead crane power? The power usage of an overhead crane can vary depending on several factors, including its capacity, operating conditions, and the specific design and efficiency of the crane. Generally, the power consumption of an overhead crane is measured in kilowatts (kW) or kilowatt-hours (kWh).
How to repair the 10 ton single beam overhead crane is a complex and critical process. It requires experience professional technical personnel to operate. The following are general repair steps for reference
When it comes to purchasing a single girder bridge crane. When purchasing a single girder bridge crane to ensure that select the right equipment and meet project needs. the following is what to consideration for purchasing a single girder bridge crane: 1. Determine the lifting capacity: Lifting capacity is a key factor in choosing a single girder bridge crane. Evaluate the maximum lifting capacity need to ensure that the crane can safely and efficiently carry out the job tasks. It is also important to leave some margin for potential future growth needs. 2. Consider the operating environment: Understanding the operating environment of the crane is crucial in the procurement process. Factors such as indoor or outdoor usage, temperature, humidity, etc. It should be taken into account. If the crane will be used in special environments. such as high-temperature or humid conditions, the appropriate model must be selected. 3. Select an appropriate span: The span of the single girder bridge crane determines its coverage area. When selecting a crane. make sure that its span can cover the workspace and provide sufficient lateral travel range. 4. Consider the height of the beam: The height of the beam depends on the required lifting height and minimum lifting…
Crane is mainly use in industrial production fields. There are many kinds of cranes. such as Tower crane, Overhead crane, Gantry crane, etc. During the operation of equipment, it may directly endanger personal safety and public safety, or cause significant harm to the environment. The following are tips for safe operation of cranes: Flagcrane have a professional technical team. which can design and produce standard and non-standard crane hoist and spare parts. If there are other special requirements. it can be customize according to user needs and negotiate by both parties.
The electric hoist is applicable to the mechanical equipment for infrastructure construction projects such as civil construction works of construction and installation companies, factories and mines, bridge construction, power, ship, automobile production, construction, highway, bridge, metallurgy, mines, slope tunnels, shaft management and protection. The following are precautions for electric hoists.
Double girder overhead crane is a relatively common type of crane, mainly use with electric winch trolley. The main performance parameters of double girder overhead crane generally include: lifting height, lifting capacity, span, working class, wheel pressure, etc. The specific explanation is as follows：
traveling crane busbar is a device that provides power to the traveling crane. How to use the traveling crane busbar as follow
Pneumatic hoist is an upgraded product called electric hoist and manual hoist, because it has the following advantages compared with electric hoist and manual hoist
Overhead crane transport cost is very high, and the main girder takes the most parts of it. If we can reduce this part, things will be different. So, here comes two crane sale plan: Complete overhead crane and overhead crane kits.
Crane pulleys are divided into single pulleys, double pulleys and multiple pulleys according to the number of wheels. According to the connection mode of the pulley and the hanging object, it can be divided into four types: hook type pulley, chain ring type pulley, ring type pulley and hanger type pulley.There are two main methods of winding steel wires for crane pulleys: “cross-cutting method and threading method” a, Cross-cutting MethodWhen the number of pulleys in the pulley block is large, and a winch or crane is used for traction, the cross-cutting method can be used to improve the working conditions of the pulley block and reduce the pulling force. It can also ensure that the pulley block is evenly stressed and hoisted smoothly.b, Threading MethodThe threading method is a simple method of threading one end of the rope around the fixed pulley and the movable pulley one by one in sequence. According to the number of cranes or winches, a single end can be drawn out, or a double end can be drawn out with a non-rotating balance pulley. , The single-end straight-through method will increase the stress on each section of the rope, and the leading end will bear…
The ld-type electric single girder overhead crane adopts a running electric hoist installed on the main girder as the lifting mechanism of the crane. The product is simple in structure, light in weight and cheap in price. It is mainly used for general lifting operations in machinery manufacturing workshops, warehouses, assembly, and maintenance of hydropower stations. So what are the components of the LD electric single girder overhead crane?
The main crane systems include: lifting system, operating system, luffing system, and rotating system, which are known as the four major systems of cranes.
“Rules for Periodic Inspection of Crane Machinery” Article 5 The regular inspection cycle of crane machinery in use is as follows: 1. Tower cranes, lifts, and mobile cranes are inspected once a year; among them, tire-type container gantry cranes are inspected once every two years. 2. Light and small lifting equipment, bridge cranes, gantry cranes, portal cranes, cable cranes, mast cranes, railway cranes, jib cranes, and mechanical parking equipment once every 2 years, in which molten metal and hot Metal cranes once a year. Flagcrane have a professional technical team, which can design and produce standard and non-standard crane hoist and spare parts. If there are other special requirements. it can be customize according to user needs and negotiate by both parties.
Happy Eid Mubarak 2023! May the blessings of joy flow to you! Ramadan honors you with endless gifts and rewards.
There are different classifications of steel, the following is the main steel classification
The working class of a crane refers to the degree of circulation and full load that the crane is allowed to allow during working hours. The working class of the hook crane is divided into three levels and seven items: A1-A3 (light level); A4-A5 (intermediate level); A6-A7 (heavy level).
How to judge whether the wire rope is scrapped or not? It’s to be use or scrappe is mainly based on the degree of broken wire of the wire rope and some other conditions. The scrapping standard is as follows: The number of broken wires in a twist pitch of the wire rope reaches 10% of the total number of wire ropes. Such as rope 6 × 19 = 114 wires, when the number of broken wires reaches 12 wires, it should be scrapped and renewed, such as rope 6 × 37 = 222 wires, when the number of broken wires reaches 22 wires, it should be scrapped and renewed. For a wire rope composed of thick and thin wires, the number of broken wires is calculated as one for each thin wire and 1.7 for each thick wire. If the radial wear or corrosion of the wire rope exceeds 40% of the original diameter, it should be scrapped. When it is less than 40%, the number of broken wires can be reduced and scrapped according to regulations. The number of scrapped wires of steel wire ropes for lifting hot metal or dangerous goods shall be half of the scrapping…
The traditional bridge crane consists of four parts: bridge frame (Figure 1-1), crane travelling mechanism (Figure 1-2), trolley assembly (Figure 1-3), and electrical appliances. These components and mechanisms all have a notable feature: planar layout, loose mechanism, larger space occupation, heavy structure, all parts of the mechanism have independent special-purpose bearing supports, and the appearance is ugly. The bridge structure design of the traditional bridge crane is relatively complicated, and the manufacturing process is simple. The main girder mainly adopts the middle rail box girder structure. Only for large-tonnage cranes, the full-deviation rail or half-deviation rail box girder structure is used. The effective gauge of the trolley is relatively smaller. , will increase the self-weight of the trolley, and the track of the trolley adopts special steel rails, which are generally fixed and welded on the upper cover of the main beam by a pressure plate. The end beam is inserted between the upper and lower cover plates at both ends of the main beam, and connected by welding, so that the end beam and the main beam become an integral rigid structure, which can bear large bending moment and shear force. The end girder not only bears the…
The above describes what is the crane wheel gnawing rail, this article introduces the measures to prevent the crane wheel gnawing rail as follows： Reduce crane wheel diameter difference:If the diameter difference of a pair of driving wheels exceeds 0.2% of its diameter, and if the diameter of the passive wheels exceeds 0.5%, it should be reprocessed to the same basic size, and the diameter difference between the driving wheels and the passive wheels should not exceed 3mm. Adjustment of crane wheel span, diagonal and alignment:The deviation of the wheel span and diagonal of the cart should not exceed ±7mm; the deviation of the wheel span and diagonal of the trolley should not exceed ±3mm, and the same position difference of the crane wheel should not exceed 2mm. During adjustment, the method of reducing one side of the spacer ring of the wheel bearing and increasing the other side correspondingly can be used to move the wheel. Or install the end beam on the boardThe bolt hole of the bearing box is enlarged, and the positioning key is moved to adjust the span, diagonal and alignment difference of the wheel. Adjustment of the transmission mechanism of the cart:The crane wheels…
Usually there is a certain gap between the crane wheel flange and the side of the rail, and they will not touch under normal operating conditions. As a result, the phenomenon of crane wheel gnawing rail occurs. Manifestations of Crane Wheel Gnawing Rail Phenomenon There are spots on the side of the crane rail or the inner side of the wheel rim, and in severe cases, there are burrs or iron filings on the marks. When the crane is running, the gap between the wheel flange and the rail changes significantly in a short distance. During the operation of the crane, the crane is skewed and the wheels are deflected. When the crane is running, it will make a louder “hiss~” rail gnawing sound. When the crane wheel gnaws the rails very seriously, the crane will make a “squeak~” impact sound when it is running, and even rail climbing will occur. Consequences of Crane Wheel Gnawing Rail 1. Shorten the life of the crane wheel. Under normal circumstances, the crane wheels of intermediate (A4~A5) working level cranes can be used for more than 15 years; the wheels of heavy (A6~A8) and metallurgical cranes can be used for about 8 years.…
How to distinguish between a flat sling and a flexible sling? Why are flexible slings cheaper than flat slings in the market with the same length of 1m and load of 1 ton, and they are all single eye rings? In terms of actual use, which sling is safer? 1. When moving the sling, do not drag the sling to avoid the load on the sling caused by robbery or shock. 2. Each sling must be carefully check before use. 3. Polyester has the function of resisting inorganic acid, but it is easy to be damage by organic acid. 4. Fiber is suitable for places with the most resistance to chemicals. 5. Nylon has the ability to withstand strong mechanical acid, and it is vulnerable to acid damage. When it is damp, its strength loss can reach 15%. 6. If the sling is pollute by chemicals or used at high temperature, you should seek reference from the supplier. Flat sling: light weight, easy to use, can provide a wide bearing surface, does not hurt the surface of the suspended object, stable lifting, high safety and strength, bright colors, improved labor efficiency, cost saving, good corrosion resistance and wear resistance, and…
The power supply system of a crane is usually composed of Sliding Wire and collector, which is an important part of the crane. Incorrect use can cause some malfunctions. The following is solutions to common failures
The operating environment of cranes is very harsh. Safety points that need to be paid attention to during operation.
As a relatively common crane category, jib crane mainly include three forms: fixed column cantilever crane, walking cantilever crane, and wall-mounted crane. This article describes different types of jib crane.
Overhead crane is also called bridge crane or eot crane, which is usually divided into single girder overhead crane and double girder overhead crane. The main differences between single girder overhead crane and double girder overhead crane are as follows.
Single girder crane has two modes of operation on the ground and in the air. There are two types of ground operations: wired handle operation and remote control handle operation; air operation refers to cab operation. The driver’s cab has two types: open type and closed type. It can be divided into two types of left or right installation according to the actual situation. Reasons for single girder crane shaking:1. The transmission parts produce wear gaps. For example, the gears of the gear coupling, the gears of the reducer and their joint keys are loose, and the gap between the connecting bolts and the holes of the drive shaft is worn out.2. The wheel binding key is loose.3. A certain wheel does not turn well. Because the backing plate fixing the wheel bearing seat is not correct, the bearing is not clamped flexibly, and the wheel stops first when parking.4. The braking torque of the brakes on both sides of the separately driven cranes is inconsistent. When parking, one brake wheel has stopped, and the other is still rotating.Due to the twisting of the crane, the wheels on both sides rotate accordingly, so that the transmission parts of the crane…
lifting tongs are mainly composition of parts: hanging beam, connecting plate, opening and closing mechanism, synchronizer, clamp arm, support plate and clamp teeth.
Safety monitoring of metallurgical crane in steel mills
Overhead cranes and gantry cranes are used in different working conditions and are widely used in the material handling industry.
The standardized use and daily maintenance of the crane lifting beam can increase its service life and reduce the occurrence of safety accidents.
European style crane is base on the introduction and digestion of internoal advance technologies, guid by the modular design theory, using modern computer technology as a means, introducing optimize design and reliability design methods, and using imported configuration, new materials, and new processes. It is a new type of crane with light weight, generalization, energy saving and environmental protection, maintenance-free and high-tech content.
How to clear the crane sludge is one of the important procedures in the maintenance of lifting equipment. Crane sludge is the sludge formed in the area where dust encounters oil vapor or water vapor during crane operation. There is a risk of spontaneous combustion if the sludge adheres to the crane, as well as accelerated damage or aging of crane components.
Overhead crane is usually use in indoor workshop, warehous, etc. and It is a relatively common hoisting and handling equipment. The working conditions of the workshop will greatly affect the selection of overhead crane. so how to choose an overhead crane suitable for plant conditions? The following Flagcrane will introduce some selection items of overhead crane for you. For workshops without power supply, Flagcrane recommends manual bridge crane. If the height from corbel to house edge is limited, Flagcrane recommends LX electric single girder suspension crane, LD electric single girder overhead crane and LH double girder electric hoist overhead crane. For the corbels with low pressure, Flagcrane recommends LD electric single girder crane, LX electric single girder suspension crane, and LH electric hoist bridge crane. And if the corbels have low pressure and want a larger lifting capacity of the crane, you can choose Trackless overhead crane. So the above is only the influence of plant conditions on the selection of overhead crane. The specific selection should also refer to factors such as the use environment and the type of lifting materials, so that a more suitable bridge crane can be selected.
The parameters of bridge crane mainly are: lifting capacity, span, lifting height, travelling speed, lifting speed, working class, etc.
Safety Instructions for Overhead Cranes and Gantry Cranes
Cranes belong to special equipment, so safe operation training of cranes can minimize the risk of accidents and protect personal and property safety.
The metallurgical crane is a overhead crane, It mainly includes: casting crane, slab crane, stripping crane, clamping crane, forging crane, quenching crane, electrolysis crane, rake crane, etc. Due to the harsh working environment of metallurgical crane, in order to avoid the failure of metallurgical crane, the following safety measures are designed for metallurgical crane to ensure the safety of users’ personal and property.
In order to further implement the Group’s quality strategy and comprehensively improve product quality, Flag Crane has formulated a series of measures to improve product quality to better serve customers and lay a solid foundation for product quality improvement. First, it is necessary to strengthen the quality awareness of employees ideologically, and secondly, continue to maintain the pretreatment of steel and profile shot blasting to improve the appearance quality of materials and the adhesion of paint. Thirdly, do a good job of self-inspection. When cutting materials, carefully follow the work order and the drawings; after cutting, check the drawings first, and then carry out appearance treatment such as slag cleaning, so that each piece of material can be Meet the quality requirements. Finally, carry out random inspection or special inspection on the materials. In this way, every layer of material used in the production is a qualified product, and the quality improvement work of the first process is done for the team. In fact, no matter what the situation and conditions are, Employee is a key factor, the staff is the main body of the machine management , the human determines the quality, and the quality is a kind of responsibility cultivation. As…
Over the years, Flagcrane has continuously increased its transformation and upgrading efforts, broadened its product business scope, and improved its R&D and manufacturing capabilities for high-end and non-standard products such as European-style products, large-tonnage, heavy-duty road overhead cranes and gantry cranes, breaking the previous single product type in one fell swoop. , R&D and design lag and other inherent modes of low-end manufacturing. The company’s Europe Type Double Girder Crane adopts an integrated control cabinet. All external wiring adopts aviation plugs. Siemens SMART200PLC communicates with touch screen for status monitoring and fault display. The whole vehicle adopts Europe style structure. Frequency conversion control and hoisting closed loop achieve high-precision control, four-speed rocker control, etc. In addition, Europe Type Double Girder are accepted by the market due to their relative advantages such as small occupied space, light weight, overall flexibility, high work ability, low failure rate, convenient maintenance, safe operation, and advanced technology. When using Europe Type cranes, the hook upper limit has been greatly improved . The size of the hook to the top edge is infinitely compressed, which greatly reduces the distance from the hook head to the bottom of the workshop, increases the lifting height, and reduces energy loss. Double rim…
New motivation! New upgrade! With the large-scale introduction of high-precision equipment by Henan Flag Crane Production and R&D strength continues to increase Several automatic drum tooth production lines were put into use “Drum Gear Coupling” Innovation in a small accessory Greatly improve the quality and service life of crane products 01 product description: The drum gear coupling belongs to the rigid-flexible coupling, which has the ability to compensate the axial deviation of radial, axial and angular directions. Drum-shaped tooth couplings are widely used at home and abroad as a common coupling for heavy-duty shaft transmission. 02 Features: 1. Strong carrying capacity. Under the same outer diameter of the inner gear sleeve and the maximum outer diameter of the coupling, the bearing capacity of the drum gear coupling is on average 15-20% higher than that of the straight gear coupling. 2. Large amount of angular displacement compensation. Under the same modulus, number of teeth, and tooth width, the angular displacement of the drum teeth is larger than that of the straight teeth. 3. The drum-shaped tooth surface improves the contact conditions of the inner and outer teeth, improves the friction and wear conditions of the tooth surface, reduces the noise, and…
This 360t Foundry crane is one of the “large Capacity” crane products of Henan Flag Crane, and it is the Foundry crane with the largest lifting capacity at present. The bridge frame and trolley frame of this crane product are integrally processed by the company’s large-scale processing equipment, which effectively improves the assembly accuracy and performance; It has the functions of fault self-diagnosis and precise operation positioning; all mechanisms are redundantly designed, and cooperate with the safety monitoring system to ensure and improve the reliability and stability of the crane operation. At present, Flag Crane firmly establishes the production concept of strict quality control, and comprehensively guarantees quality and production safety in all aspects of production and operation such as products, services, technology, supply, safety and hygiene, and delivers satisfactory to customers and the market. The 250t gantry crane of a hydro-power station, the 160t double girder Foundry crane, the Maanshan Iron and Steel 200t four girder Foundry crane, and the Chengdu Metallurgical 280t four girder Foundry crane are high-quality cranes of large Capacity and large projects, which are widely used in major industrial fields such as hydro-power stations, metallurgy and steel, etc. It demonstrates the strength of the company’s technology research and development and manufacturing. In…
Recently,we have equipped 3 automatically welding line for single girder crane main girder.
The profits we can get for installing these lines:Higher output, With the help of these lines,we will be able to fabricate 140 sets single girder cranes daily….
Recently, it was learned from Henan Quality Association that in 2018, the list of Henan Province’s quality credit system construction A and other industrial enterprises came out. Henan FLAG Crane Co., Ltd. was recognized as “Henan Province’s quality credit system construction AAA-level industrial enterprises”, which is the only one company in crane industries…
This workstation is mainly used to realize the automatic welding of the inner seam of the double girder main beam. After the manual feeding is basically centered, the workpiece is turned over by the L-arm hydraulic turning machine, and the robot can locate and weld automatically….
