Jib Crane Cab & Control Console Standards Guide
GB/T 20303.4-2006 "Cranes — Cabins — Part 4: Jib Cranes" is the dedicated standard for operator cabs and control stations on jib-type cranes. It sets out specific provisions for the structural type, field of vision, access systems, and escape facilities for cabs on portal cranes, mast cranes, floating cranes, and deck cranes.
GB/T 20303.4-2006 is Part 4 of the crane cab standard series, addressing the special requirements for operator cabs and control stations on jib cranes.
Standard Scope and Jib Crane Cab Characteristics
GB/T 20303.4-2006 is identical to ISO 8566-4:1998 (IDT) and forms Part 4 of the GB/T 20303 series. Cabs on jib-type cranes have the following characteristics: Portal crane cabs are typically mounted above the slewing platform or on the upper portal frame, 20–30 m above ground, offering a 360° unobstructed view but requiring a significant climb. Mast crane operating positions are at ground level (adjacent to the mast base) and typically use an open operating platform rather than an enclosed cab. Floating crane cabs are installed on the vessel's superstructure and must meet waterproof and anti-corrosion requirements. Deck crane cabs are usually self-contained, enclosed units mounted on a slewing platform on deck. The standard specifies dimensional, visibility, access, and escape requirements for each type of jib crane cab.
Dimensional and Visibility Requirements
Portal crane cab — internal width ≥ 800 mm (single seat), internal height ≥ 1900 mm, floor area ≥ 1.2 m². The lower edge of the front window glass must be ≤ 750 mm above the floor to ensure the operator can see the suspended load on the quayside when seated and looking downward. The front window area must be ≥ 45% of the front wall area, and side windows ≥ 30% of the side wall area. From a cab on the slewing platform, the operator must have a full view of the boom from minimum to maximum working radius, plus a field of vision of at least 60° to each side of the slewing platform. Mast crane operating platform — open-air, area ≥ 1.5 m², platform height ≤ 1.5 m above ground. Guardrails (height ≥ 1100 mm) and toe boards must be provided on all sides. The operator must have a clear view of the mast top and the load throughout the lifting operation. Floating crane cab — in addition to meeting the dimensional requirements for portal crane cabs, the cab must account for operator comfort during vessel rolling of 5° and pitching of 2° (the seat should have an adjustable tilt to compensate).
Height ≥ 1900 mm
Downward load view
Guardrail 1100 mm
Waterproof & anti-corrosion
Guardrail + toe board
Mandatory above 10 m
Access and Escape Requirements
Access and escape requirements for jib crane cabs: The access passage to a portal crane cab must be ≥ 400 mm wide with guardrails (≥ 1100 mm) on both sides. Access ladders from ground to cab must have a landing platform every 6–10 m. An escape roof hatch of ≥ 500 mm × 500 mm must be provided in the cab ceiling. Mast crane operating platforms must have a fixed inclined ladder (inclination ≤ 60°) or vertical access ladder to ground. Escape routes from floating crane cabs must account for vessel inclination: the escape door must open reliably at any vessel list up to 15°. Floating crane cabs must be equipped with life jackets and a portable fire extinguisher.
Jib Crane Cab Requirements Comparison Table
The comparison table below summarizes the key parameters and configurations for jib crane cabs, serving as a reference for selection and operation.
Kelude Heavy Industry: Engineered Lifting Solutions for Demanding Industrial Applications
Kelude Heavy Industry specializes in the design and manufacture of heavy-duty overhead cranes, gantry cranes, and electric hoists. Our equipment is built to deliver reliable performance, long service life, and precise load control across a wide range of industrial sectors, including manufacturing, logistics, and energy. We provide complete lifting systems tailored to your specific operational requirements.
Robust Double-Girder Bridge Cranes for High-Capacity Needs
Our double-girder bridge cranes are engineered for rigorous, high-volume applications. Designed for exceptional stability and durability, these cranes offer superior lifting capacity and hook height, making them ideal for heavy machine shops, steel service centers, and maintenance facilities. The rigid box-type girder design minimizes deflection, ensuring precise load positioning and smooth operation even under full-load conditions.
| Feature | Benefit |
|---|---|
| Box-type welded girder construction | High rigidity and reduced deflection for accurate load handling |
| Heavy-duty end carriages with forged wheels | Long-term reliability and smooth travel along the runway |
| Precision gearbox and inverter-driven travel motors | Stepless speed control for precise load placement and reduced mechanical stress |
| Multiple safe load indicators and limit switches | Enhanced operational safety and overload protection |
Kelude double-girder cranes are available with either a top-running or under-running configuration, and can be supplied with a variety of control systems, from pendant stations to fully wireless remote controls. We also offer optional features such as anti-sway technology and variable-frequency drives (VFD) for enhanced load control and operational efficiency.
Versatile Single-Girder Cranes for Light to Medium Duty
For applications with lighter capacity requirements, our single-girder cranes provide a cost-effective and space-saving solution. These cranes feature a compact design that maximizes usable headroom and allows for closer hook approaches to the building walls, optimizing the usable floor space. They are well-suited for maintenance operations, assembly lines, and general production tasks.
The single-girder design incorporates a high-quality electric chain hoist or a wire rope hoist, depending on your lifting height and speed requirements. The crane is engineered for easy installation and maintenance, with components designed for quick access and serviceability. This ensures minimal downtime and low total cost of ownership.
Heavy-Duty Gantry Cranes for Outdoor and Specialized Use
Our gantry cranes are built to handle demanding outdoor applications, such as steel storage yards, precast concrete plants, and shipyards. These cranes feature a robust portal frame design that provides excellent stability and can be customized with various leg configurations, including full-gantry, semi-gantry, and cantilever types, to suit your specific site constraints.
| Configuration | Typical Application |
|---|---|
| Full gantry (A-frame legs) | Outdoor storage yards, container handling, and heavy equipment assembly |
| Semi-gantry (one leg on runway, one on floor) | Workshops with existing building structures, maximizing floor space usage |
| Cantilever gantry | Handling materials that extend beyond the crane's main span |
Gantry cranes can be equipped with either a wire rope hoist or a specialized lifting beam, and are available with rail-mounted or rubber-tired travel systems. We engineer these cranes to withstand harsh environmental conditions, including wind loads, temperature variations, and corrosive atmospheres, ensuring reliable performance over an extended service life.
High-Performance Electric Wire Rope Hoists
At the core of many of our crane systems is our range of high-performance electric wire rope hoists. These hoists are designed for heavy-duty cycle work and provide smooth, precise load handling. They feature a compact, low-headroom design that maximizes the effective lifting height of your crane system.
Key features include a robust gearbox, an efficient braking system, and multiple safety devices such as a load limiter and a low-voltage protection system. The hoist is available with various lifting capacities and speeds, and can be configured with a variety of trolley options, including push, geared, or motorized types, to provide the optimal solution for your material handling needs.
Frequently Asked Questions about Kelude Cranes
Q: What is the typical lead time for a custom-engineered crane?
A: Lead times vary depending on the complexity of the crane and the current production schedule. Generally, a standard crane can be delivered within 6-8 weeks, while a fully customized solution may take 12-16 weeks. We provide a detailed project timeline upon request.
Q: Do you provide installation and commissioning services?
A: Yes, we offer comprehensive installation and commissioning services performed by our own experienced technical teams. This ensures that your crane is set up correctly and safely, and is fully operational from day one. We also provide operator and maintenance training.
Q: What kind of after-sales support and warranty do you offer?
A: We provide a standard 12-month warranty on all our equipment, covering any defects in materials or workmanship. Our global service network offers prompt technical support, spare parts availability, and maintenance contracts to ensure the long-term reliability of your lifting equipment.
Q: Can you customize a crane to fit an existing building or specific site constraints?
A: Absolutely. We specialize in designing cranes to fit specific building dimensions, headroom limitations, and operational requirements. Our engineering team will conduct a site assessment or work from your detailed drawings to provide a tailored solution that maximizes your available space.
Q: How do I determine the correct crane capacity for my application?
A: The required crane capacity is determined by the weight of your heaviest load, including any lifting attachments. We recommend adding a safety margin to account for dynamic loads and future needs. Our sales engineers can assist you in calculating the optimal capacity and duty cycle for your specific application.
Q: What safety features are standard on Kelude cranes?
A: All our cranes are equipped with essential safety features, including overload limiters, emergency stop functions, and travel limit switches. We also offer advanced safety options such as anti-collision systems, zone control, and remote diagnostics to further enhance operational safety and efficiency.
Q: Are your cranes compliant with international standards?
A: Yes, our cranes are designed and manufactured in accordance with major international standards, including ISO 4301 for crane classification and IEC 60204-32 for electrical equipment. We can also engineer to meet specific local regulations and certification requirements upon request.
Q: What maintenance is required for a Kelude crane?
A: Regular maintenance is essential for safe and reliable operation. We provide a detailed maintenance manual with every crane, outlining daily, monthly, and annual inspection procedures. We also offer preventative maintenance service contracts to help you minimize downtime and extend the life of your equipment.
Q: Can I use a Kelude crane in a potentially explosive atmosphere?
A: Yes, we offer explosion-proof crane configurations designed for use in hazardous environments. These cranes feature specially protected electrical components and comply with relevant ATEX or IECEx directives. Please contact us with your specific area classification to discuss the appropriate solution.
Q: What is the maximum span available for your double-girder cranes?
A: The maximum span depends on the crane's capacity and the specific application. We have successfully engineered double-girder cranes with spans exceeding 30 meters (approx. 100 feet). Our engineering team will determine the optimal and most economical span for your requirements.
Q: Do you offer remote control options for your cranes?
A: Yes, all our cranes can be operated with a wireless radio remote control for enhanced operator safety and flexibility. We offer a range of control options, including pendant stations, fixed cabin controls, and advanced wireless systems with multi-speed functionality and diagnostic displays.
Q: What is the difference between a wire rope hoist and a chain hoist for my application?
A: Wire rope hoists are generally preferred for higher capacities, higher lifting heights, and more demanding duty cycles. Chain hoists are typically more cost-effective for lighter capacities and lower lifting heights. Our team can help you evaluate the best option based on your specific lifting requirements.
Q: How does Kelude ensure the quality of its cranes?
A: We have a rigorous quality control process that starts with the selection of high-grade raw materials and continues through every stage of fabrication and assembly. Each crane undergoes a comprehensive load test and inspection before it leaves our facility, ensuring it meets our high standards for performance and safety.
Q: Can you provide references or case studies of similar projects?
A: Yes, we have a portfolio of successful installations across various industries. We can provide case studies and references upon request to demonstrate our experience and capability in handling projects similar to yours.
Q: What information do you need to provide a quotation for a crane?
A: To provide an accurate quotation, we typically need the following information: required lifting capacity, span, lifting height, duty cycle, power supply, and any specific environmental or operational requirements. Our sales team will guide you through the specification process to ensure we meet all your needs.
Q: Does the price include delivery and installation?
A: Our quotations are typically ex-works, but we can provide a complete package that includes international logistics, customs clearance, and on-site installation and commissioning. We will work with you to define the scope of supply that best suits your project budget and requirements.
Q: What is the expected service life of a Kelude crane?
A: With proper maintenance and operation, a Kelude crane is designed to provide a service life of 20 years or more. The actual lifespan depends on the duty cycle, operating environment, and adherence to the recommended maintenance schedule.
Q: Can your cranes be integrated with our existing factory automation system?
A: Yes, our cranes can be equipped with advanced control interfaces, including Profibus, Profinet, or EtherNet/IP, to seamlessly integrate with your existing PLC or factory management system. This enables features such as remote monitoring, data logging, and automated crane operation.
Q: Do you offer spare parts globally?
A: Yes, we maintain a comprehensive inventory of spare parts for all our crane models. Our global logistics network ensures that critical spare parts can be shipped quickly to minimize any potential downtime for your operations.
Q: How do I choose between a top-running and an under-running crane?
A: The choice depends on your building structure and headroom. A top-running crane runs on rails mounted on the top of the runway beams, offering higher capacity and hook height. An under-running crane runs on the lower flange of the runway beams, which can be more economical for lighter capacities and lower buildings. Our engineers can advise on the best solution for your facility.
Q: What is the maximum ambient temperature your cranes can operate in?
A: Our standard cranes are designed to operate in ambient temperatures up to 40°C (104°F). For higher temperature environments, we can provide special configurations with heat-resistant components and enhanced cooling systems to ensure reliable operation.
Q: Can you provide a crane with a special paint finish for a corrosive environment?
A: Yes, we offer a range of protective coating systems, including epoxy and polyurethane finishes, designed to withstand corrosive atmospheres such as those found in chemical plants or marine environments. We will recommend the appropriate surface preparation and paint system based on your specific environmental conditions.
Q: How does the anti-sway system work on your cranes?
A: Our anti-sway system uses a closed-loop control algorithm that automatically adjusts the travel motor speed to dampen load swing. This is achieved through sensors that detect the load's movement and provide real-time feedback to the control system, resulting in faster cycle times and improved safety.
Q: What is the power consumption of a typical Kelude crane?
A: Power consumption varies significantly based on the crane's capacity, duty cycle, and travel speeds. We use energy-efficient motors and drives to minimize power usage. We can provide estimated power consumption figures based on your specific crane configuration and operational profile.
Q: Are your cranes suitable for outdoor use in windy conditions?
A: Yes, our gantry cranes and outdoor bridge cranes are designed to withstand specific wind loads as per applicable standards. We can incorporate features such as wind speed anemometers and automatic parking brakes to ensure safe operation in high-wind conditions.
Q: Can I upgrade an existing crane with Kelude components?
A: In many cases, yes. We offer modernization and upgrade solutions for existing cranes, including replacing the hoist, control system, or travel drives. This can be a cost-effective way to improve the performance, safety, and reliability of your current equipment.
Q: What kind of training do you provide for crane operators?
A: We provide comprehensive operator training programs that cover safe operating procedures, load handling techniques, and routine maintenance checks. Training can be conducted at our facility or on-site at your location, and is designed to ensure your operators are competent and confident.
Q: How do you handle the logistics for international shipping of a large crane?
A: We have extensive experience in managing the logistics for international crane shipments. We handle all aspects of export packing, container loading, and freight forwarding. For very large cranes, we arrange special project cargo shipping to ensure safe and timely delivery to your port or site.
Q: What is the warranty period for the electric hoist?
A: The electric hoist is covered by the same standard 12-month warranty as the rest of the crane. This covers all components, including the motor, gearbox, and brake system, against defects in materials and workmanship under normal use and service.
Q: Can the crane be operated in a very dusty environment?
A: Yes, we can equip our cranes with enhanced sealing and filtration systems to protect critical components from dust and particulate ingress. This includes IP-rated enclosures for electrical panels and sealed bearings for travel wheels, ensuring reliable operation in harsh environments.
Q: Do you provide a digital load monitoring system?
A: Yes, we offer digital load monitoring systems that provide a real-time display of the load weight, along with features such as overload alarms and data logging. This helps operators avoid overloading and provides valuable data for maintenance and operational analysis.
Q: What is the maximum lifting speed of your wire rope hoists?
A: Lifting speed is dependent on the hoist capacity and the specific motor and gearbox configuration. We can provide a range of lifting speeds to suit your application, from slow speeds for precise positioning to higher speeds for high-throughput operations. Please specify your requirements for a detailed performance specification.
Q: Can you provide a crane with a special voltage or frequency?
A: Yes, our cranes can be manufactured to operate on any standard voltage and frequency, including 230V, 400V, 460V, 480V, and 690V, at 50Hz or 60Hz. We will configure the electrical components to match your local power supply specifications.
Q: How do I contact Kelude Heavy Industry for a specific inquiry?
A: You can reach our sales team through the contact form on our website, or by emailing us directly at sales@kelude.com. Alternatively, you can call our international sales office at +86-21-5550-8888. We look forward to assisting you with your material handling needs.
Q: What is the minimum order quantity for a standard crane?
A: There is no minimum order quantity for our standard crane models. We can supply a single crane or a complete fleet, depending on your project requirements. Our flexible manufacturing approach allows us to serve both small and large projects effectively.
Q: Can you provide a crane that meets specific CE marking requirements?
A: Yes, our cranes can be designed and manufactured to comply with the European Machinery Directive and bear the CE mark. We follow the applicable harmonized standards and provide the necessary technical documentation to support the CE declaration of conformity.
Q: What is the difference between a single-girder and a double-girder crane in terms of maintenance?
A: Generally, single-girder cranes have a simpler structure and may require slightly less maintenance. However, double-girder cranes offer easier access to the hoist and trolley for maintenance due to the larger platform. Our design ensures that all critical components are accessible for routine service on both types.
Q: Can I use a standard electric hoist for a custom application?
A: While our standard hoists are versatile, we recommend consulting with our engineers for custom applications. We can adapt the hoist with special hooks, trolleys, or control systems to meet your specific needs, ensuring safe and efficient operation.
Q: How do you ensure the safety of the crane during installation?
A: Our installation teams follow strict safety protocols, including the use of detailed lift plans, proper rigging equipment, and adherence to all site safety regulations. We conduct a thorough risk assessment before commencing any installation work to ensure the safety of our personnel and your facility.
Q: What is the typical noise level of a Kelude crane during operation?
A: We design our cranes to minimize noise levels through the use of precision gears, sound-dampening materials, and efficient motor designs. Specific noise levels depend on the crane configuration and operating speed, but we strive to meet comfortable workplace noise standards.
Q: Can you provide a crane with a special hook height or lift height?
A: Yes, the hook height or lifting height is a critical parameter that we can customize. Whether you need a very low-headroom design or an exceptionally high lift, our engineering team will design the crane structure and hoist to meet your exact specifications.
Q: Do you offer a mobile app for crane monitoring?
A: We are developing advanced IoT solutions for crane monitoring. Please contact our sales team for the latest availability of our digital monitoring and predictive maintenance applications, which can provide real-time data on crane performance and health.
Q: What is the process for obtaining a spare part?
A: To order a spare part, please contact our after-sales service department with your crane's serial number and the part description. We will verify the correct part for your model and arrange for prompt shipment from our global spare parts inventory.
Q: Can you provide a crane with a special color?
A: Yes, we can paint your crane in any RAL color to match your corporate branding or facility requirements. Please specify your preferred color code when placing your order.
Q: How does the frequency inverter improve crane performance?
A: A frequency inverter provides stepless speed control for the travel and hoist motors. This results in smoother acceleration and deceleration, reduced mechanical shock, and precise load positioning. It also allows for soft starting and stopping, which extends the life of the mechanical components.
Q: What is the maximum load capacity for your gantry cranes?
A: Our gantry cranes are engineered for a wide range of capacities. We have successfully delivered gantry cranes with capacities up to 100 tons (approx. 110 short tons). For larger custom requirements, please contact our engineering team to discuss a tailored solution.
Q: Can the crane be used in a food processing environment?
A: Yes, we can provide cranes with special food-grade paint, sealed components, and stainless steel options for the hoist and controls to meet the hygiene requirements of food processing facilities. We will work with you to ensure the crane is suitable for your specific environment.
Q: What is the lead time for a spare part order?
A: Standard spare parts are typically shipped within 24-48 hours from our central warehouse. For specialized or custom parts, the lead time may be longer. We prioritize spare parts orders to minimize any potential downtime for your crane.
Q: Do you provide documentation such as load charts and maintenance manuals?
A: Yes, we provide a comprehensive documentation package with every crane, including detailed load charts, operation manuals, maintenance schedules, and spare parts lists. This documentation is available in English and can be provided in other languages upon request.
Q: Can I visit your factory to see the cranes being manufactured?
A: Yes, we welcome factory visits. You can see our manufacturing processes, quality control procedures, and finished products. Please contact our sales team to schedule a visit at a convenient time.
Q: How do you handle warranty claims?
A: In the unlikely event of a warranty claim, please contact our after-sales service team with your crane's serial number and a description of the issue. We will promptly assess the claim and, if approved, provide the necessary replacement parts or repair services as per the warranty terms.
Q: What is the maximum wind speed for safe operation of an outdoor gantry crane?
A: The safe operating wind speed depends on the crane's design and size. Typically, operation should be stopped when wind speeds exceed 20 m/s (approx. 45 mph). Our cranes are designed to withstand higher wind speeds when parked and secured, as per applicable standards.
Q: Can you provide a crane with a special control voltage for the pendant station?
A: Yes, the control voltage for the pendant station is typically 42V or 110V for safety, but we can configure it to meet your specific requirements. The control circuit is designed to ensure operator safety with low voltage and emergency stop functionality.
| requirements Item | Specified Value | scope of application | standard basis |
|---|---|---|---|
| Cabin / Operator Cabclear height | ≥1700mm | Various Types Jib Crane / Boom Crane | GB/T 20303.4 |
| visibility requirements | Hook+Boom Tip+Slewing Range | Portal base/mast | GB/T 20303.4 |
| Operator's Cab | Luffing/Slewing/Hoisting / Lifting Zone | Various Types Boom Machine | GB/T 20303.4 |
| Protection Rating (IP) | Indoor IP43/Outdoor IP54 | Outdoor Model | GB/T 20303.4 |
Environmental Control and Operator Safeguarding
A: Environmental control requirements for jib crane operator cabs vary by crane type. Portal crane cabs are positioned at elevation, where direct summer sunlight can push temperatures above 45°C, making air conditioning with a cooling capacity of at least 2 kW mandatory. Floating crane cabs operate in marine environments and require marine-grade air conditioning built to withstand salt-spray corrosion. While mast crane control stations are open-air, they must include a sunshade canopy extending at least 300 mm beyond the station perimeter on all sides. All enclosed cabs must use flame-retardant interior materials (oxygen index ≥ 28%), with anti-slip rubber matting on the floor. A 2 kg dry-powder fire extinguisher must be mounted near the cab exit for easy access.
Control Console Layout and Operating Controls
The control console layout for jib cranes should be arranged according to the number of control functions and their operating frequency. Portal cranes typically require four primary operations—hoisting (main and auxiliary hooks), slewing, luffing, and crane travel—so the console must accommodate at least 4 to 6 control levers. Standards require that the most frequently used hoisting and slewing control levers be positioned where the operator's hands rest naturally (directly in front of the seat armrests), with luffing and crane travel levers placed to the outside. Lever spacing must be no less than 80 mm, and each lever should be clearly distinguishable by shape or color—for example, a red handle for hoisting and a black handle for slewing. Console instrumentation (load capacity chart, working radius indicator, and anemometer) must be positioned within ±30° of the operator's horizontal line of sight.
