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XINXIANG, China – In a significant milestone for global industrial trade, Weihua Group, a world-leading crane and heavy-lifting equipment manufacturer, announced the successful shipment of a major overseas project today. The centerpiece of this shipment is a batch of its robust and reliable 30-ton crane hooks, destined for a key infrastructure project in South America.     This shipment underscores Weihua's growing influence in the international market and its commitment to delivering high-quality, precision-engineered lifting solutions to partners worldwide. The 30-ton crane hooks are a critical component for the client's operations, designed to handle heavy loads with utmost safety and efficiency in demanding industrial environments. "We are thrilled to see this important project reach the shipping stage," said a spokesperson for Weihua's International Project Department. "This consignment of 30-ton hooks represents more than just hardware; it embodies our dedication to engineering excellence and our promise to support our global clients' success. Each unit has undergone rigorous testing to meet international safety standards, ensuring reliability and durability on the job site."   The Weihua 30-ton crane hook is renowned for its superior load-bearing capacity, exceptional durability, and advanced safety features. Manufactured from high-tensile alloy steel and subjected to a stringent quality control process, these hooks are built to withstand the rigors of continuous use in sectors such as construction, shipping, logistics, and heavy manufacturing.     The timely dispatch of this order highlights Weihua's efficient supply chain management and logistical capabilities, even amidst global challenges. The company's ability to fulfill large-scale international orders on schedule has cemented its reputation as a trustworthy and dependable partner for major projects around the globe.   This latest shipment is expected to bolster the client's operational capabilities, contributing to the progress and timely completion of their development project. It also marks another step forward in Weihua's mission to connect the world with superior lifting technology.   As the containers set sail, the Weihua team is already providing comprehensive support, including detailed installation guides and remote technical assistance, ensuring a seamless integration of the equipment into the client's systems.     About Weihua Group Weihua Group is a multinational company specializing in the research, development, and manufacturing of bridge crane, gantry crane, hoists, and other material handling equipment. With a history of over 30 years, Weihua's products are trusted in more than 130 countries, known for their innovation, quality, and value.

The crane hook adopts Solidworks three-dimensional modular design and finite element analysis. The overall structure of the hook group is more reasonable, making installation and maintenance more convenient and faster. It can realize a variety of lifting combinations under different working conditions, improve work efficiency, have beautiful appearance and compact structure.     1. Reasonable force deflection is small   The installation method of the overhead crane hook and pulley is adjusted to make the overall force more reasonable, extend the service life of the wire rope, and reduce the deviation of heavy objects.   2. New anti-falling device   The new hook design and new hook anti-detachment device are adopted to make the hook force more reasonable and ensure that the lifting operation is safer and more reliable.   The hook head is made of special alloy steel such as 35CrMo and 34Cr2Ni2Mo, which has been quenched and tempered. Compared with ordinary hook heads, the yield strength is more than doubled. The hook head has undergone strict flaw detection and inspection. The beam and nut are forged from high-quality alloys. The pulley is hot-rolled from high-quality steel plates, and the overall service life is longer.     According to the IATF16949 quality management system, PFMEA failure mode and impact analysis is performed before processing, and technical documents such as process flow charts, control plans, and work instructions are prepared. Advanced equipment such as laser cutting and blanking, shot blasting machine pretreatment, robot welding, and automated unit lines are used to ensure the accuracy and consistency of processing. The main parts of hooks, beams, nuts, and pulley shafts are processed with heavy-duty CNC machine tools to ensure the quality stability of the processed products.

JAKARTA, Indonesia – In a significant move to bolster industrial capabilities, a robust 30-ton double girder crane hook system has been successfully delivered and installed at a major manufacturing facility in Indonesia. This delivery underscores a growing trend of industrial modernization and international partnership within the Southeast Asian nation's rapidly expanding economy.     The centerpiece of this upgrade is the massive, high-capacity hook assembly, engineered to serve as the critical lifting component of a new double-girder overhead crane. This equipment is destined to become the workhorse of the facility's production floor, handling heavy machinery, large raw material batches, and finished products with unparalleled precision and safety.   Engineering Excellence for Demanding Applications     The delivered hook is not a standalone product but a sophisticated system designed for extreme duty cycles. Key features that make it suitable for heavy industrial environments include:   1. High Load Capacity: Rated for 30 metric tons, the hook is built from high-tensile, forged alloy steel, heat-treated for exceptional strength and durability to prevent deformation under full load.   2. Enhanced Safety Systems: The hook is equipped with a safety latch to prevent loads from accidentally slipping off, a critical feature for ensuring workplace safety. It is also designed with a significant safety factor, exceeding its nominal rating to handle unexpected stress or dynamic loading.   3. Precision Movement: As part of a double-girder crane system, the hook provides smooth and precise travel along the bridge and hoist motions. This allows operators to position multi-ton loads with millimeter accuracy, which is essential for complex assembly and logistics operations.   4. Durability and Longevity: Designed to withstand the harsh conditions of a industrial setting, including exposure to dust, varying temperatures, and constant use, the hook assembly is built for minimal maintenance and maximum uptime.     Powering Indonesia's Industrial Ambitions   The installation of this crane system is a direct response to Indonesia's push towards enhancing its manufacturing and processing sectors. Industries such as metal fabrication, heavy machinery assembly, logistics warehousing, and infrastructure development require reliable and powerful material handling solutions.       A Symbol of Partnership and Progress   The arrival of this advanced crane hook in Indonesia symbolizes the strengthening trade and technological exchange between international engineering firms and Indonesian industry. It represents a vote of confidence in the country's economic growth and a commitment to equipping its workforce with world-class tools.   As Indonesia continues to position itself as a global manufacturing hub, the integration of robust infrastructure like this 30 ton crane hook will be instrumental in driving efficiency, competitiveness, and sustainable industrial growth for years to come.  

The hook is one of the important components of the bridge crane. When it is worn to a certain extent, it will bring serious hidden dangers to the safety production of the bridge crane and even cause personal casualties. Therefore, my country's national standards strictly stipulate that when the wear of the vertical dangerous section of the overhead crane hook reaches or exceeds 5%, it must be scrapped, and the hook is not allowed to be used after other treatments.     As we all know, cranes are busy at work and the working site conditions are harsh. The hooks of overhead cranes are generally used for about one year.   The wear amount of its vertical dangerous section exceeded the limit specified by national standards, so it had to be scrapped. Hook life is short and the resulting repair costs are high.   One of the main causes of hook wear is the friction between the hook and the wire rope during operation of the truck crane and during hoisting operations. When the truck crane is in operation, the hook is usually hung by a wire rope lock in front of the driver's cab or on the platform in front of the control room. Both ends of the wire rope that locks the hook are hung on two hooks on the chassis of the car to fix the hook and prevent it from shaking. Because truck cranes often travel at varying speeds on roads with varying road conditions, this causes relative movement between the hook and the wire rope, causing wear and tear on the hook. This wear surface happens to be on the vertical dangerous section of the hook. For this reason, the external environment of the hook must be appropriately improved to reduce or avoid wear and tear.     In addition, a wear-resistant anti-wear sheet is wrapped on the vertical dangerous section of the hook to avoid wear of the hook. The main body of the wear-resistant sheet is made of wear-resistant rubber, with an appropriate thickness of 10mm. Some thin steel wires are embedded on the wear surface to increase its wear resistance. A 4mm thick iron wire is also embedded laterally at both ends of the wear plate to fix the wear plate on the hook. Then, fix the wear plate on the vertical dangerous section of the hook. At this point, the sling can only wear the anti-wear piece fixed on the hook, which plays a role in protecting the hook.   This kind of wear protection sheet has the following characteristics:   1. The anti-wear effect is good and can effectively block the direct wear and tear of the sling on the hook.   2. Long service life, using wear-resistant rubber and fine steel wire embedded in each other to slow down wear.   3. It does not affect the stress on the hook. Due to the unique characteristics and softness of rubber, it can bend at will when stress is applied.   4. The structure is simple and easy to disassemble and assemble. Can be operated on site.   5. The manufacturing process is simple, the materials are easy to obtain, the cost is low, and it has good practical application value.   As mentioned above, after using this kind of wear-resistant sheet, the hook of a small overhead crane is protected to the maximum extent, extending its service life, reducing costs, ensuring safe production in hoisting operations, and achieving considerable economic benefits.

The preparation work for medium repair and overhaul is carried out within 5-6 months from the preparation of the damage report form to the shutdown of the double-girder crane for repair.   The damage report form is prepared based on the records made during the inspection of the double girder crane. In order to fill in these records, there is a special row in the maintenance and inspection book for repairs to be made. Manufacture and obtain necessary reserve parts according to damage report form.     When a double-girder crane is stopped for repair, its mechanism and steel structure must be inspected. At this time, special attention must be paid to:   a. The wheel positions of both the double-girder crane and the trolley to determine whether they are installed correctly and whether their spindle centers must be corrected;   b. Radial clearance in the gear transmission of the double-girder crane, whether the gears have full meshing and whether the rotating shaft has no deflection;   c. Whether the rotating shaft of the double-girder crane mechanism jumps and whether the axis of the rotating shaft connected by the coupling coincides;   d. The status of the lubrication system of the double-girder crane and whether there is no oil leakage;   e. The condition of the steel structure of the double-girder crane.   f. Double girder crane hook wear degree.   Safety inspection specifications for double girder cranes Safety Inspection of Double-Girder Overhead Crane In order to ensure the safe operation of the overhead crane, some routine safety inspections need to be carried out during the operation of the crane. The inspection items and key points are as follows:   1. The lifting height limiter, travel limit switch and various interlocking mechanisms have normal performance and are safe and reliable.   2. All main components meet safety requirements: the opening increase is less than 15% of the original size, the torsional deformation is less than 10%; the plate hook bushing wear is less than 50% of the original size, the plate hook spindle wear is less than 5%, and there is no peeling, burr, or welding repair. There are no obvious defects in the crane hook hanger and pulley. The amount of steel wire wear and corrosion on the surface of the steel wire rope is less than 40% of the steel wire diameter, and the broken wires within one lay pitch are less than 10% of the total number of wires. There are no broken ends, no obvious thinning, and no core protrusion, dead corner twisting, extrusion deformation, annealing, and burning. The clips, pressure plates, and wedges that connect and fix the ends of the wire rope are in good condition and are not loose. There are no less than 2 pressure plates and no less than 3 clips. The drum has no cracks, and the connection and fixation are not loose; the drum wall wear is less than 20% of the original wall thickness; the safety roll is no less than 2 turns, and the diameter ratio of the drum to the wire rope meets the requirements. The balance wheel is well fixed and the wire rope should meet the requirements. The brake has no cracks, looseness, or serious wear. The brake gap is of equal size on both sides and has sufficient braking force. The wear of the brake band is less than 50% of the original thickness.

Crane hook material The crane hook material is made of high-quality low-carbon killed steel or low-carbon alloy, which is annealed after forging. Only when the hook is subjected to impact loads at work can the hook set have sufficient strength and toughness.   Crane hook production process The hook head is made by forging and then heat treatment. The forging process is a method in the metal thermal processing process. The forging process is the process of refining the metal structure and arranging the metal fibers. The heat treatment is to eliminate internal stress and further improve the mechanical properties of the metal (it can be simply understood as making the internal structure of the metal more compact). Disadvantages of repair welding of hook group It is difficult to meet the principle quality standards for hook repair welding. Repair welding is the entire process of partial melting, fusion, and solidification of metal. During repair welding, part of the basic metal of the hook parent body close to the repair welding is heated and cooled to varying degrees due to heat conduction. It is like a heat treatment on this part, which changes the structure and performance of this part. Most of the welding is for the wear and depression of the crane hook, and the depression is on the same straight line as the vertical dangerous section. Repair welding refines the metal structure of the hook and destroys the sequential arrangement of metal fibers, destroying the toughness of the hook, thereby reducing the performance of the hook.

In addition to the rising failure, there are safety risks such as the hook cannot be lowered, the hook is inflexible, and the hook has cracks. As a common fault in single-girder crane failures, it is important to have a correct understanding of hook failures.     The hook is the most common retrieval device on single-girder bridge cranes. It bears the load of heavy objects during lifting. Once the crane hook is damaged and broken during operation, the consequences will be disastrous. Cause cracks and breaks in the hook. In order to ensure safe use, it must be operated in strict accordance with the regulations and overloading is strictly prohibited. During the inspection, the opening degree, wear and tear of the hook and the corresponding safety devices should be scientifically analyzed and processed. If cracks are found in the hook, handle them in accordance with GB10051---88 standards.   Single girder crane hook maintenance precautions 1. When repairing the crane, disassemble and inspect the hook, shaft, horizontal single-girder bridge crane, pulley, and bearings and clean and lubricate them. There should be no cracks in the hook, otherwise they will be handled according to regulations. The threaded parts should be tight and the bearings not damaged. When the pulley is rotated and knife marks or cracks appear at the thread relief groove, it should be scrapped and replaced.   2. Check the wear status of dangerous sections. When the wear degree is greater than 10% of the original height, it will be considered scrapped and replaced.   3. After overhaul, test the hook and suspend it for more than 10 minutes at 1.25 times the rated load. The elastic opening of the hook mouth shall not be higher than 0.25% of the original size, and there will be no deformation or cracks after lifting.   4.  After the plate hooks are riveted, the gap between the plates shall not be greater than 0.3mm.

Safety protection devices are essential measures to prevent accidents involving cranes. These include devices that limit travel and working positions, devices to prevent crane overload, devices to prevent crane tipping and slipping, and interlocking protection devices. These devices ensure the safe and normal operation of cranes. Today, we'll introduce the common safety protection devices used on bridge cranes during daily production operations.     1. Lifting height (lowering depth) limiter   When the spreader reaches the limit of lifting (lowering), it can automatically cut off the power source and stop the bridge crane hook. It mainly controls the safe position of the crane hook to prevent the hook from hitting the top and causing the hook to fall and other safety accidents.   2. Running stroke limiter   Cranes and trolleys (except for suspended electric hoist trolleys) must be equipped with travel limiters in each direction of travel. These automatically cut off the forward power supply when the specified limit position is reached. These limiters primarily consist of limit switches and safety-bar-style impact blocks, ensuring the crane trolley or crane remains within its travel limits.   3. Lifting Capacity Limiters   The load limiter maintains the load 100mm to 200mm above the ground and gradually increases the load without impact to 1.05 times the rated load. This device cuts off upward movement, but allows downward movement. Also known as an overload protector, it primarily prevents cranes from exceeding their rated load capacity. Electrical load limiters are common, typically consisting of a load sensor and a secondary instrument. Short-circuiting is strictly prohibited.   4. Anti-collision device   When two or more cranes or trolleys are operating on the same track, or when they are not on the same track and there is a risk of collision, an anti-collision device should be installed to prevent collisions. When the two vehicles approach, an electrical switch is triggered, cutting off the power supply and stopping the cranes. This is because, in complex operating conditions and high speeds, it is difficult for the operator to avoid accidents solely through judgment.   5. Interlocking Protection Devices   Doors for access to and from the lifting machinery, and doors connecting the operator's cab to the bridge, must be equipped with interlocking devices unless the manual specifically states that the doors must be opened and safe operation can be guaranteed. When the doors are open, the power supply cannot be connected. If the machinery is in operation, the power supply must be disconnected and all mechanisms must cease operation when the doors are opened.   6. Other Safety and Protection Devices   Other safety and protection devices primarily include buffers and end stops, wind and anti-skid devices, alarms, emergency stop switches, track sweepers, protective covers, and guardrails.   Safety Reminder Finally, we remind users of cranes that although cranes are equipped with various safety protection devices at the factory, accidents can still occur if the company's safety management is inadequate and personnel violate regulations, even if the equipment has technical protection measures.   Users of cranes should effectively implement their primary responsibility for safety, establish and effectively implement a safety management system, actively conduct safety education and training, conduct regular maintenance and self-inspections of cranes based on their characteristics and usage, and conduct hazard detection and control according to the hazard detection and control system. This ensures that safety protection devices remain safe and effective, that cranes operate safely, and that the company's production and operations are safe.

What types of crane hooks are there? There are many categories of hooks. Generally speaking, they can be divided into forged crane hook and laminated hooks according to different manufacturing methods; and they can be divided into single hooks and double hooks according to different shapes.     Plate hook   There are two types of hooks: single hook and double hook. This type of hook has a simple structure, reliable operation and easy maintenance. Single hook is mostly used on casting cranes, while double hook is mostly used on general cranes with a capacity of more than 100 tons.   Forged hook   Forged hooks are divided into single hooks and double hooks. Because the single hook will be offset when subjected to force, it is not as advantageous as the symmetrical force of the double hook. Therefore, small and medium-sized cranes below 75 tons mostly use single hooks, and large-tonnage cranes above 75 tons mostly use double hooks.   How can the user carry out daily maintenance of the hook? The safety and stability of the hook plays an important role in production safety. The user unit should regularly conduct daily safety inspections and maintenance on the hook to ensure production safety. Generally speaking, the daily inspection and maintenance of the hook includes the following:   (1) Clean the crane hook assembly body with a non-corrosive organic solvent, wipe it dry and inspect it with a magnifying glass. If cracks are found, replace it immediately and do not perform repair welding.   (2) Check the hook opening and the wear of the dangerous section.   (3) Check whether the pulley groove and rim are evenly worn, whether the wire rope matches the groove, and whether the pulley is loose or shaking.   (4) Ensure that the hook rotating part rotates freely and the clearance is not too large. If it is difficult to rotate or it is stuck, check whether the bearing or sleeve is damaged or not lubricated enough.   (5) Check the main hook for overload damage.   (6) Check the hook guard, crossbeam and other parts. If the guard is severely worn, it can be repaired by welding and then re-bored. If a new part is replaced, it is necessary to ensure that the mechanical properties of the material meet the requirements.   (7) Check the anti-unhooking device. How to conduct regular inspections on hooks? Cranes need to undergo regular inspection once every two years: cranes used to lift molten metal, tower cranes, elevators, and mobile cranes need to undergo regular inspection once a year, and this inspection must be performed by dedicated inspectors.   ① Perform nondestructive testing on areas of the workpiece where stress is concentrated. If cracks are detected, immediately stop using the hook and replace it.   ② Regularly inspect the wear or corrosion of the hook's critical sections. If the actual dimensions are less than 95% of the original basic dimensions, replace the hook.   ③ If the hook's twist angle exceeds 10°, replace the hook.   ④ If the hook's opening is deformed by 10% of the original basic dimensions, replace the hook.   ⑤ Repair welding is not permitted on hook defects.   ⑥ Plastic deformation of the critical sections or hook handle is prohibited.

Wire rope electric hoists are used in ports, docks, logistics transportation, and lifting and handling. Port freight electric hoists are equipped with cantilever cranes to complete up, down, left, and right lifting, such as ship material loading and unloading, vehicle material loading and unloading, etc.   1. To transport ordinary materials, you can choose the CD1 wire rope electric hoist for single-speed lifting, with a lifting capacity of 0.5-10 tons, single-speed lifting, a lifting speed of 8m/min, an operating speed of 20m/min, and a lifting height of 6-30 meters. There are many options.   2. To transport heavy objects that cannot produce sparks, use stainless steel electric hoists, explosion-proof electric hoists, gas explosion-proof, dust explosion-proof, no sparks, and a high safety factor.

The reasons why the electric hoist cannot be lowered may be as follows:     1. Brake pad failure: Seriously worn brake pads or improper installation may cause the electric hoist to fail to descend normally.   2. Motor or transmission failure: The motor is fatigued or the transmission is stuck, which may cause the lowering function to fail.   3. Contactor or control circuit failure: Problems with the lowering button or contactor may prevent the lowering function from starting.   4. Wiring problems: Aged, loose, or damaged wires may prevent current from flowing properly to the wires that control the motor.     5. Overload protection starts: If the electric hoist detects that the load exceeds the safe load, it may automatically stop descending.   6. Braking system problems: Brake ring wear, insufficient spring pressure, or oil stains on the braking surface may cause unreliable braking and affect the descending function.   7. Voltage problem: The voltage is too low or fluctuates too much, which may cause the electric hoist to fail to lower normally.   It is recommended that when encountering a situation where the electric hoist cannot be lowered, first check the above possible reasons and take corresponding maintenance measures according to the specific situation. If you cannot solve it by yourself, it is recommended to contact professional maintenance personnel for inspection.   Article reference: https://www.weihualargecrane.com  

The working principle of the electric hoist is to use an electric motor to drive the hoist winch to rotate and lift or lower the load through the winch.     Electric hoists are generally composed of motors, winches, cables, cable control systems, operating panels and safety protection devices. During use, the motor drives the winch to rotate, and the cable passes through the winch winding. The cable control system can control the length and direction of the cable to lift or lower the load. During operation, the electric hoist will also automatically monitor the load to ensure the safety of operation.     Electric hoists have the advantages of simple structure, convenient operation and high lifting efficiency. They are widely used in industrial production, warehousing and logistics, construction engineering and other fields.

As a kind of lifting tool, the lifting pulley is widely used in lifting and hoisting in the fields of construction sites, power construction, bridge construction, highway construction, etc. So what kind of accident will occur when the pulley hook breaks? Let's take an example:   A truck overturned on a highway, and a crane was called in to lift it. However, during the lifting and straightening process, the wire rope or the lifting pulley hook was suspected to be broken, causing the truck to fall suddenly. The people below were not evacuated in time, resulting in casualties.     According to the case, it can be judged that the accident occurred due to two major factors. First, the crowd was not evacuated in time during the lifting process, resulting in casualties. Second, the problem of the lifting equipment (hook, wire rope, pulley body, etc.) caused the truck to fall suddenly and cause an accident. Therefore, before using the lifting tools in daily life, you should first check whether there are any abnormalities in the lifting tools. If there are any, replace or repair them in time to avoid danger during the lifting process.   Crane hook manufacturer Hama recommends that you regularly maintain your lifting tools to extend their service life.

The Weihua crane hook is the most commonly used fetching device in lifting operations. It bears the entire load of lifting. Once routine inspections are not done and problems such as damage or unreliable fixation occur, it is easy to cause safety accidents.   What types of hooks are there? Crane hooks are widely classified. Generally speaking, according to different manufacturing methods, they can be divided into forged hooks and laminated hooks; according to different shapes, they can be divided into single hooks and double hooks.   Today I will introduce to you the two most common ones:   Chip hook   There are two types of chip hooks: single hook and double hook. This kind of hook has a simple structure, reliable operation and easy maintenance. Single hooks are mostly used in casting cranes, while double hooks are mostly used in general-purpose cranes over 100 tons.     Forged hook   Forged hooks are divided into single hooks and double hooks. Because the force of a single hook will deflect, it is not as beneficial as the symmetrical force of a double hook. Therefore, single hooks are mostly used for small and medium-sized cranes below 75 tons, and double hooks are mostly used for large-tonnage cranes above 75 tons.   Routine maintenance of crane hook? The safety and stability of the hook plays an important role in safe production. Daily safety inspection and maintenance of the hook should be carried out frequently during use to ensure safe production. Generally speaking, routine inspection and maintenance of hooks include the following:   (1) Clean the crane hook group body with a non-corrosive organic solvent, dry it and inspect it with a magnifying glass. If cracks are found, replace them immediately and no repair welding is allowed.   (2) Check the hook opening and the wear amount of the dangerous section.   (3) Check whether the pulley groove and rim are evenly worn, whether the wire rope matches the wheel groove, and whether the pulley is loose or shaking.   (4) Ensure that the rotating part of the hook can rotate freely and the gap cannot be too large. If it is difficult to rotate or stuck, you should check whether the bearings, bushings are damaged or there is insufficient lubrication.   (5) Check the main hook for overload damage.   (6) Check the hook guard plate, beam and other parts. If the guard plate is seriously worn, it can be repaired and re-bored after welding. If new parts are replaced, it is necessary to ensure that the mechanical properties of the material meet the requirements.   (7) Check the anti-unhooking device. www.globalweihua.com

Orbital crane, also known as rail-mounted container gantry crane, is generally a lifting equipment used in ports for container loading, unloading, transportation and stacking in container railway transfer yards and large container storage yards. Track cranes, like tire cranes, belong to the field bridge. Common container specifications and dimensions, how much volume and tons can a container hold? There are four main types of commonly used standard containers, 20GP, 40GP, 40HQ and 45HQ.   1. 20GP: 20-foot standard container, internal dimensions are L5898*W2352*H2393mm, weight limit is 20-24.95 tons. 2. 40GP: 40-foot standard container, internal dimensions are L12192*W2352*H2393mm, weight limit is 20-26.50 tons. 3. 45GP: 45-foot standard container, internal dimensions are L13556*W2352*H2393mm, weight limit is 20-26.50 tons. 4. 40HQ: 40 feet high box, internal dimensions are L12192*W2352*H2698mm, weight limit is 20-26.50 tons. 5. 45HQ: 45 feet high box, internal dimensions are L13556*W2352*H2698mm, weight limit is 20-26.50 tons. At present, the most common types of cranes used in ports are 20 ft electric cable hoist and 40 ft electric cable hoist. The 20 ft electric cable hoist is a special machine for stacking, loading and unloading containers at container terminals. The electric hoist is mainly composed of two double-cantilevered gantry frames. The door legs on both sides are connected with lower beams. They are supported on the walking wheel platform and can walk on the track. The main advantage of this machine is that it can stack 4 to 5 layers of containers and can span multiple rows of containers and one lane. Therefore, it has high storage capacity and high utilization rate of the yard area. Due to its simple structure, it is easy to operate, easy to maintain, and easy to realize automation. The main disadvantage is that it has poor flexibility because it has to run along the track; due to the large span, it is difficult to extract the bottom box. It is often used in container terminals with insufficient land area and large throughput. Mechanical structure The components of the rail crane mainly include hoisting, trolley, cart, power room, driver's cab, etc. Most of the mechanical structure is similar to that of a tire crane, but the difference is the traveling mechanism of the cart. The components of the orbital hoisting mechanism mainly include motors, reducers, brakes, high-speed shaft couplings, low-speed shaft couplings, wire rope drums and drum bearing seats, etc. Spreaders generally have 4 ropes and 8 ropes, and their usage is similar to tire cranes. The trolley mechanism of the track crane is generally large in number and fixed on the track. It can only move forward or backward in a straight line, and cannot change the direction of the trolley on its own, nor can it raise its height. https://www.weihualargecrane.com

In the production workshops of various factories and enterprises, most of them can see electric chain hoists. They are small in size, low in weight, simple to operate, easy to use, safe and durable, and are ideal tools for loading and unloading goods and repairing equipment. It is widely used in all walks of life in docks, factories, warehouses, construction and assembly line production work. As a lucky assistant, it must have advantages that other crane equipment does not have. Of course, an inch is good and a ruler is short, but the emphasis is different. The following are the advantages and characteristics of electric chain hoists: The electric chain hoist motor has good comprehensive performance, better safety and reliability, and reduces the probability of risks. The overall body structure of the electric chain hoist is very simple. Easy to install, disassemble and maintain for easy repair. The available space is high, effectively saving space, and the multiple styles (fixed, low available space, and operating) are not limited by small spaces. The lightweight aluminum alloy shell is lightweight, strong and has high heat dissipation rate. The fully enclosed design is suitable for environments with poor working conditions. Three-in-one transmission technology provides excellent performance. The lifting reducer made of high-quality alloy steel can achieve three-level deceleration. It operates very smoothly, has a long service life and reliable performance, and avoids many shortcomings of long-distance transmission of the hoist's central shaft. More unique innovations, appearance, beautiful appearance, exquisite structure, lightweight, humanized design (limit switch, double brake system, scientific switch, chain, chain bag, etc.). Of course, people are imperfect, gold is naked, and nothing is perfect. Gap comparison. It cannot be expected that the electric chain hoist has no shortcomings. Compared with the hand chain hoist, one of the major disadvantages of the electric chain hoist is that it cannot be used outdoors and other situations where there is no power supply. The only options are hand chain hoists and prototype hoists. Compared with the wire rope electric hoist, it is mainly reflected in the stability, failure rate and noise of the wire rope electric hoist. The wire rope electric hoist below 5 ton electric chain hoist is basically similar to the chain electric hoist, but the rising speed, productivity and maintenance cost of the wire rope electric hoist below 5 ton electric chain hoist are better than the chain electric hoist. In general, the electric chain hoist can be said to be a very good crane equipment. Its starting weight is usually 0.1~60 tons and the lifting height is 4~20 meters. It is suitable for almost all places. Everyone can choose the appropriate electric hoist according to the working environment and needs. https://www.weihualargecrane.com

Due to the particularity of the application environment and the high requirements for its own safety, explosion proof electric hoist must undergo strict testing before leaving the factory. The test contents of explosion proof electric hoists mainly include type test, routine test, medium test, sampling test, life test, and endurance test. These are the tests that must be conducted before each qualified explosion-proof electric hoist leaves the factory. Type test: A test conducted on an explosion proof electric hoist manufactured according to a certain design requirement to check whether the design requirement meets certain specifications. Routine test: Also called factory test, it is a test conducted on each component or equipment of an explosion proof electric hoist during manufacturing or after completion to determine whether the component or equipment meets a certain standard. Dielectric test: It is a general term for various tests that test the electrical characteristics of media, including: insulation, static electricity, withstand voltage, etc. Sampling test: Testing a number of randomly selected samples from the explosion-proof electric hoist is also used to determine whether the sample meets a certain standard. Life test: A test to determine the possible life span of an explosion-proof electric hoist under specified conditions, or a test conducted to evaluate and analyze the life characteristics of the product, which is a destructive test. Withstand test: Tests conducted on explosion-proof electric hoists under specified conditions including specific operations for a certain purpose within a certain period of time, such as repeated operations, short circuit, overvoltage, vibration, impact, etc., are destructive tests. https://www.weihualargecrane.com  

Weihua is proud to announce that we have successfully designed and produced over 70 intelligent overhead crane for a leading brewing company. We are excited to provide top-of-the-line equipment that will be instrumental in their brewing and production processes.     To enhance our customers' installation experience, we have pre-installed, tested, and debugged our products with all cables and electrical control systems in place before leaving our factory. Our cutting-edge technology enables heavy-duty connectors with aviation plugs that can be easily connected on-site, reducing installation time significantly.     Furthermore, this batch of cranes includes Weihua's anti-swing control system, which reduces swing by over 95%. This sophisticated system ensures lifting accuracy and streamlines brewing operations. We are confident that our customers will be satisfied with our superior equipment and unparalleled customer service.     Weihua is a leading lifting solutions provider in China. Main products: project overhead crane, gantry crane, portal crane, jib crane, sts, RMG, RTG, etc.

Weihua has yet again broken a new world record with their latest innovation, an ultra-high lift height gantry crane for vertical shaft construction. As a leader in the industry, Weihua has already made their name with the previous world record for a 400m gantry crane used in the Beijing Olympics.     The 658m lifting height of this new gantry crane is not only impressive, but it also offers a game-changing solution for vertical construction projects. It allows for efficient vertical shaft excavation, support, and lifting of pressure steel pipes, as well as equipment maintenance. With Weihua's multiple related invention patents for high lift height gantry cranes, it's clear that their product research and design is top-notch.     This groundbreaking project speaks volumes about Weihua's competence, technical strength, and continuous innovation. Their exceptional track record of delivering reliable and high-quality equipment has earned them the recognition and trust of their customers. The world's first 658-meter ultra-high lift vertical construction dedicated crane project is a testament to Weihua's technical excellence and their unwavering commitment to customer satisfaction.   Weihua is a leading lifting solutions provider in China. Main products: project overhead crane, gantry crane, portal crane, jib crane, sts, RMG, RTG, etc.

Currently, 23 cranes from Weihua are proudly serving the construction of the Future New City (NEOM) project in the northwest of the Saudi Arabian Peninsula. This monumental initiative, led by Crown Prince Mohammed of Saudi Arabia and boasting a total investment of 500 billion dollars, focuses on nine key industries and will solely rely on renewable energy for its energy supply. Divided into four parts, NEOM is set to feature magnificent elements ranging from a linear city to a clean industry center, a mountain tourist destination, and a luxury island resort. NEOM's remarkable development emphasizes the implementation of high-tech empowerment for green development transformation, which has garnered significant international recognition. As such, Crown Prince Mohammed refers to it as the "land of global dream chasers." At Weihua, we take immense pride in our green and low-carbon product performance and holistic service guarantee. As a result, we've earned the unanimous praise of clients supporting NEOM's development. We firmly believe that our continued contributions will assist Saudi Arabia in establishing itself as a "global dream chaser's land." With a surge of new orders, we remain a resolute choice for all customers aspiring to meet the demanding Weihua standards. Weihua is a leading lifting solutions provider in China. Main products: project overhead crane, gantry crane, portal crane, jib crane, sts, RMG, RTG, etc.