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High Quality Made in China Heavy Duty 50/60/70/80/90/100t Double Girder Overhead Travelling Bridge Crane with Electric Winch Trolley Factory Directly for Sale1
CraneDouble Girder Overhead Travelling CraneWinch Trolley Overhead Crane
Shanghai Hexin Crane Machinery Co., Ltd.
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Product Description Product DescriptionHigh Quality Made in China Heavy Duty 50/60/70/80/90/100t Double Girder Overhead Travelling Bridge Crane with Electric Winch Trolley Factory Directly for SaleTop running double girder cranes are cranes whose end trucks operate on fixed rails attached to the top flange of the runway beams or girders. The winch is the top running type and the trolley rides on fixed rails or tracks attached to the top flange of the bridge beams or girders. Top Running Double Girder Cranes with open winch carry the bulk of the heavy lifting. With spans of up to 45 meters and capacity to 300 Tons, these cranes can handle the most diversified application and environment. ManufacturingOpen winch cranes are used for lifting and moving heavy components, machinery, and materials within factories, assembly lines, and warehouses. ConstructionThey are employed for lifting and placing heavy structural elements, equipment, and materials on construction sites. MiningOpen winches are used for lifting and moving materials, equipment, and personnel in underground and surface mining operations. Logistics and TransportationOpen winch cranes and hoists are used for loading and unloading heavy cargo, containers, and equipment at ports, terminals, and rail yards. Power GenerationThey are used for lifting and maintaining heavy machinery, equipment, and components in power plants, including hydroelectric and nuclear facilities. Aerospace and ShipbuildingOpen winches are used for lifting and maneuvering large components, equipment, and materials during the construction and maintenance of aircraft and ships.Petrochemical IndustryOpen winches are used for lifting and moving heavy equipment, tanks, and pipelines in petrochemical plants and refineries. A winch (also called an electric winch or winch) is a mechanical device used to lift or move heavy objects. It transmits power by winding a rope or chain and is widely used in construction, mining, shipbuilding and other industrial fields.Advantages of Winch as a Lifting Mechanism:The winch trolleys are produced on demand in order to address special needs, such as those of process cranes with special features regarding capacity, safety, speed, or other requirements.In general, open winches offer higher lifting capacities, higher speeds, and are classified under higher FEM working groups.Possibility of operating with motors at speeds of 1,500 rpm, 1,000 rpm, and 750 rpm, enabling larger motor sizing.Utilization of commercial motors that conform to adequate customer standards. Using one motor, which has a lower failure probability, instead of two hoists with two motors for the same lifting capacity.Direct shaft connection from the motor to the gearbox and then to the drum, equipped with flexible and intermediate assemblies that absorb shocks during lifting.True vertical lift, with a stable hook during the lifting process. Easy access to the components facilitates easy maintenance. An external brake provides easy access and maintenance.Wire rope press roller / Wire rope anti-overlapping device. The aim of the anti-overlapping device is to prevent the wire rope from coming out of the drum hole.Product Parameters NumberItemParameters1Lifting capacity1-300 tons2Lifting height1-45m3Running speed0-50 m/min4Lifting speed0-20 m/min5Power supply3p 380v 50hz/ 220v 50hz/ customized6Control methodCab control/ Wireless remote control7Protection classIP548Work levelA4-A89ApplicationsFor double girder overhead crane and gantry crane Understanding the Structure of a Double Girder Bridge CraneThe structure of a double girder bridge crane is a compact yet robust system, designed for efficient handling of medium to heavy-duty loads. By understanding its core components-such as the main girders(bridge), hoist, and end trucks, operators can optimize crane performance, reduce wear and tear, and ensure smooth operations. A clear understanding of the crane's structure empowers users to operate safely, minimize downtime, and maximize productivity and longevity.BridgeA load-bearing beam that runs the width of the building. This is the primary structural component that connects the runways and moves the hoist forward and backward using a trolley.A bridge can be comprised of one or two beams-more often referred to as a single girder or double girder design. Girders can be made of rolled steel or can be fabricated by welding the beams into a steel box design. Trolley and Lifting MechanismThe trolley is a mobile platform that runs along the length of the main beams. It houses the hoisting mechanism, which is responsible for lifting and lowering loads. The hoisting mechanism includes a system of ropes, pulleys, and a motor-driven hoist drum that enables the lifting operation.Winch Drum and Ropes: The Winch drum winds and unwinds the steel ropes that are attached to the bulk, controlling the vertical movement of the lifted load. High-tensile ropes are used to ensure the safety and durability of the hoisting system.Trolley Motor: The trolley is powered by motors that allow it to move horizontally along the crane's main beams, positioning the hoist directly above the load being lifted or placed. End TruckLocated at each end of the crane, the end trucks enable the gantry crane to travel along the rails using a set of wheels that run smoothly on the tracks.Depending on the crane's capacity, each end truck can be equipped with 2, 4, or 8 wheels, ensuring optimal stability and performance. HookOur cranes are equipped with a variety of lifting tools designed for diverse applications.The hook is ideal for general lifting tasks, providing a reliable connection for lifting and moving loads safely.The grab bucket is perfect for handling bulk materials, allowing for efficient and secure lifting of loose or granular items.Additionally, we offer a range of other specialized lifting tools tailored to meet specific operational needs, ensuring maximum efficiency and safety for your lifting operations. Controls Control boxs are typically mounted on the crane or hoist and the pendant or remote console allows the operator to run the crane. The controls operate the drive and hoist motors, and can control Variable Frequency Drives (VFDs) to control hoist speed for precise load positioning. Power Supply SystemInsulated conductor bars, festoon systems (flat cables), or cable reels bring power to the crane. Company ProfileFounded in 2007, our company's entrepreneurial journey began in the lifting machinery industry. As the business expanded, we established a modern manufacturing facility to meet growing demand. In 2024, we launched the brand Hexin Crane and set up our office in Shanghai. Our mission remains clear: Helping to Lift World.At Hexin Crane, we specialize in the design and production of both standardized and customized lifting machinery. With extensive expertise, particularly in overhead cranes and gantry cranes, we provide tailored solutions to meet the specific needs and operational requirements of our clients. No material or design challenge is too complex for us-our team is committed to delivering innovative solutions that ensure maximum efficiency and safety.Our products are exported to over 20 countries worldwide, serving a diverse range of customers, including end-user factories, distributors, and industry peers. In addition to complete crane systems, we supply crane components and OEM services to clients abroad.With a strong international presence, it's likely we already offer our products and services in your region. Feel free to reach out-we look forward to helping you with your lifting needs.CertificationsExhibitionsOur quality and reputation attracts many customersPackaging & ShippingFAQQ1: Are you a manufacturer or a trading company?We are an integrated production and trading enterprise, with our own independent R&D team, manufacturing facility, and professional marketing department. This integrated structure allows us to offer comprehensive solutions and maintain a competitive edge in the market. Q2: Can the cranes be customized?Yes, every customer's working condition is different, all of our products can be customized depend on customers' requirements. Please give us the information as clear as you can, so we can give our best design to suit for your demands.Q3: How long is your warranty coverage?We offer a 2-year warranty on the crane itself and an 18-month warranty on electric components. Should any issues arise, our dedicated after-sales team and professional engineers will promptly assist in troubleshooting and resolving the issue. Support is available via email or video conference for efficient diagnosis. If the issue is found to be related to quality, we will swiftly send any necessary replacement parts via air freight to minimize downtime and ensure a quick resolution.Q4: Do you provide overseas installation services by engineers?While we typically provide a detailed instruction manual for self-installation, we also offer the option of overseas installation services in specific cases. Our products are carefully packaged and designed for easy installation, which helps reduce costs and streamline the setup process. If necessary, we can arrange for our engineers to assist with installation at your location.Q5: If we have an urgent need, can you arrange prompt delivery?Yes, we understand the urgency of your requirements. Once your order parameters are confirmed, we prioritize urgent orders and work diligently to expedite the production and shipping process. Our efficient production systems and logistics network ensure that you receive your products quickly and reliably, without compromising on quality.Q6: I have limited headroom in my workshops.Is it possible to install a crane in that space? Definitely. We offer specialized crane solutions designed for workshops with low headroom. Our experienced engineers will work with you to create a customized design that fits your space perfectly, ensuring both optimal performance and space efficiency.Q7: Do you supply lifting and rigging tools?Yes, we provide a full range of lifting and rigging tools, including hooks, electromagnetic devices, grab buckets, and more. Please consult with our sales team to discuss the specific tools and accessories that best suit your needs.Q8: Do you accept OEM/ODM business?Certainly. We have extensive experience in OEM/ODM manufacturing and have collaborated with leading crane brands and customers worldwide. Whether you need customized products or full OEM solutions, we are equipped to meet your specifications.Q9. What payment methods do you accept?We accept T/T, bank transfers, L/C, PayPal, and other major payment platforms.Q10: In order to offer the most suitable design solution for you, it will be great helpful if you can offer us the following information to us:1. Lifting capacity.2. Span length. (rail center to rail center)3. Lifting height. (hook center to ground)4. Have you installed the rails? Do you need us to supply the rails? How long is it?5. Power supply: Voltage.6. Working condition: What kind of material to lift? Temperature?7. It would be much better if it is possible for you to offer the drawing photo of your workshop.
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