As a key piece of equipment in the heavy industry sector, the 32-ton gantry crane, with its exceptional load capacity and stable operational performance, is an indispensable lifting asset in modern manufacturing, port logistics, and construction projects. This equipment adopts a modular design philosophy, integrating high-strength structural steel with intelligent control systems to achieve efficient material handling while ensuring safety and reliability. Its standardized production process and strict quality control system endow the product with excellent durability and environmental adaptability, capable of meeting operational demands under various working conditions.
The 32-ton gantry crane is a heavy-duty industrial lifting device designed with a double-girder gantry structure, possessing robust lifting capabilities. This equipment consists of key components including the main girder, legs, gantry travel mechanism, lifting trolley, and electrical control system. The main girder and legs are manufactured from high-quality steel, providing sufficient strength and stability to ensure safe and reliable operation under prolonged, high-intensity use. Both the gantry travel mechanism and the lifting trolley employ advanced design and manufacturing processes, enabling fast and precise positioning and lifting operations. The electrical control system features intelligent design, offering high automation, simple operation, and safety reliability. The span of this equipment can be customized according to actual requirements, and the duty class is divided into three grades, A5-A7, meeting usage requirements under different working conditions. The complete machine complies with the GB/T14406-2017 “General Gantry Cranes” standard, boasting high-performance indicators and use value, and is widely applied in material handling needs within the heavy industry sector.
The 32-ton gantry crane is primarily used for lifting operations involving steel materials, containers, and large equipment components in locations such as port terminals, steel plants, and heavy machinery manufacturing. It demonstrates efficient and stable lifting performance in scenarios like wind power equipment assembly and bridge precast component handling, supporting bidirectional movement and precise positioning functions.
The operating environment temperature range for the 32-ton gantry crane is -20°C to +50°C, with relative humidity not exceeding 90%. For the installation site, the foundation bearing capacity should be ≥150 kPa, and the maximum wind resistance is Level 6 (Level 10 in non-operational state). This equipment is not suitable for special environments such as flammable, explosive, strongly corrosive, or those with severe electromagnetic interference. In flammable and explosive environments, it may cause fires or explosions, posing a threat to the safety of equipment and personnel. In strongly corrosive environments, the metal components of the equipment may corrode, leading to reduced strength and shortened service life. In environments with severe electromagnetic interference, the normal operation of the equipment may be affected, causing misoperation or failure.
Span: 18m-35m (Customizable)
Lifting Height: 9m-18m
Lifting Speed: 0.5-8 m/min (Variable Frequency Speed Control)
Gantry Travel Speed: 20-30 m/min
Duty Class: A5-A7
Power Supply: AC380V±10% 50Hz
Table: Main Technical Parameters of the 32 Ton Gantry Crane
| Parameter Category | Technical Parameter | Performance Indicator / Description | Key Component / Material Configuration | Safety / Efficiency Characteristic |
|---|---|---|---|---|
| Basic Parameters | Span | 18m-35m (Customizable) | _ | Adapts to different site requirements |
| Lifting Height | 9m-18m | _ | Flexibly covers multiple work scenarios | |
| Rated Lifting Capacity | 32 Tons | Q345B Low-Alloy Steel Main Girder | Reliable structural load capacity | |
| Performance | Lifting Speed | 0.5-8 m/min (VFD) | SEW Reducer + Taiwan Brake | Dual-brake redundancy design |
| Gantry Travel Speed | 20-30 m/min | ZG340-640 Cast Steel Wheel (HRC45-50) | Quenching treatment improves wear resistance | |
| Positioning Accuracy | ±5mm | Variable Frequency Control System | Reduces energy consumption by 15% | |
| Structural | Main Girder Stiffness Coeff. | 1/800 | Box Structure + Ultrasonic Tested Welds | Finite Element Optimized Design |
| Leg Structure | Variable Section Box | Adjustable Anchor Bolts | Adapts to uneven ground | |
| Electrical System | Control System | Schneider PLC | Siemens 7.5-inch Touchscreen | Overload/Limit/Phase Sequence Triple Protection |
| Power Requirement | AC380V±10% 50Hz | IP54 Rated Electrical Components | Oil-Resistant Rubber Sheathed Cable | |
| Duty Class | Standard Grade | A5-A7 | _ | Suitable for Medium-High Intensity Work |
Table: 32 Ton Gantry Crane Core Component Technical Specifications
| Component Name | Technical Specification | Performance Advantage | Manufacturer / Material Standard | Quality Inspection Standard |
|---|---|---|---|---|
| Main Girder Structure | Q345B Low-Alloy Steel | High Strength (Yield Strength ≥345MPa) | Complies with GB/T1591 Standard | 100% Weld Ultrasonic Inspection |
| Lifting Mechanism | Dual Brake System | Redundant Safety Design | SEW Reducer + Taiwan Brake | EN15011 Certification |
| Travel Mechanism | ZG340-640 Cast Steel Wheel | Surface Hardness HRC45-50 after Quenching | Complies with GB/T11352 Standard | Radial Runout ≤0.1mm |
| Electrical Control | Schneider PLC | Integrated Fault Self-Diagnosis Function | Schneider Telemecanique Series | IEC61131-3 Programming Standard |
| VFD System | Vector Control Technology | Positioning Accuracy ±5mm | Siemens G120 Series | Supports PROFIBUS Communication Protocol |
| Steel Structure Connectors | 10.9 Grade High-Strength Bolts | Tensile Strength ≥1040MPa | Complies with GB/T1228 Standard | Torque Coefficient Test Passed |
| Safety Devices | Multiple Protection System | Overload/Limit/Phase Sequence/Emergency Stop | Schneider Safety Relay | SIL3 Safety Level Certification |
| Cable System | YC Oil-Resistant Rubber Sheathed Cable | Oil-Resistant, Anti-Mechanical Damage | Complies with GB5013 Standard | Insulation Resistance ≥10MΩ |
The double-girder box structure main girder is optimized through finite element analysis, possessing excellent stiffness performance with a stiffness coefficient reaching 1/800, ensuring stability and reliability during operation. To further enhance operational efficiency, we selected reducers from the renowned German brand SEW and high-quality brakes manufactured in Taiwan, both providing excellent performance assurance. Notably, the lifting mechanism employs a dual-brake redundancy design, ensuring safety and stability even under extreme conditions. We also utilize advanced variable frequency drive control system technology, resulting in smooth, shock-free operation and extremely high positioning accuracy with an error of only ±5mm. The application of this technology makes equipment operation smoother and more efficient while significantly improving productivity. Furthermore, compared to traditional control systems, this VFD system reduces energy consumption by up to 15%, achieving dual goals of energy saving and environmental protection.
The main girder is welded from Q345B low-alloy steel, a material known for its high strength, good plasticity, and toughness, ensuring sufficient load-bearing capacity and stability when handling heavy loads. Critical welds undergo 100% ultrasonic non-destructive testing to ensure reliable weld quality, free from any defects. The legs feature a variable-section box structure, a design that enhances equipment stability and is equipped with adjustable anchor bolts for easy installation and adjustment on uneven ground. The gantry travel wheels are made of ZG340-640 cast steel, a material with high hardness and wear resistance, ensuring the wheels maintain good performance and longevity under prolonged use. The surface quenching hardness reaches HRC45-50; after quenching treatment, the hardness and wear resistance of the travel wheels are further improved, making them more suitable for high-intensity, high-wear working environments.
The Schneider PLC control system integrates overload protection, limit protection, and phase sequence protection functions, collectively ensuring safe and reliable equipment operation. It is equipped with a Siemens 7.5-inch touchscreen for status monitoring and supports fault self-diagnosis. All electrical components have an IP54 protection rating, and cables are oil-resistant rubber sheathed types. These configurations not only improve the level of automation and operational efficiency but also make equipment operation and maintenance simpler and more convenient.
Before commencing any equipment installation, ensure the site has completed concrete foundation construction and has undergone the proper curing period, typically 28 days or more. Check the position of embedded parts to ensure their deviation does not exceed 5mm, preventing installation failures or safety hazards due to incorrect positioning. Simultaneously, prepare necessary construction equipment, such as two mobile cranes of 50 tons or greater capacity, and inspection tools like laser levels, to ensure the smooth progress of the installation process. Verifying the equipment component list is also crucial, with special attention to key parts like high-strength bolts, ensuring their torque coefficient meets requirements.
Begin installation by first assembling the legs and the lower cross beam. Use inspection tools like a laser level to ensure the verticality deviation of the assembled legs and lower cross beam does not exceed 1/1000. For segmented hoisting of the main girder, temporary support frames must be set up to maintain stability. When aligning welds, the groove angle should be precisely controlled at 35°±5° to ensure weld quality and strength. The installation of the gantry rails also has strict requirements: the track gauge tolerance range is ±5mm, and the rail joint gap should be maintained between 4-6mm. The execution of these steps and requirements directly impacts the overall installation quality and subsequent performance of the equipment.
After equipment installation is complete, perform a no-load test run. The equipment should run continuously for 2 hours, during which the motor temperature rise is measured, ensuring it does not exceed 65K. Next, conduct a rated load test, checking if the main girder deflection meets the requirement, i.e., the deflection should be less than Span/700 (where S is the span). Finally, perform a heavy-load test lift, loading to 110% of the rated load. At this point, all mechanisms should show no abnormal vibration, ensuring equipment stability and safety under normal and extreme working conditions.
During equipment installation and commissioning, a series of safety precautions must be strictly observed. First, establish a restricted area with a radius of 20 meters around the installation area to prevent unauthorized personnel entry and potential safety incidents. Second, pay close attention to weather conditions; when wind speed exceeds 8 m/s, immediately stop work to prevent accidents. For tightening high-strength bolts, a torque wrench must be used, applying torque in three stages, ensuring the final torque deviation does not exceed ±5%. Implementing these measures will ensure the safety of operating personnel and the proper functioning of the equipment.
The operator must perform a comprehensive safety check before starting the equipment. First, ensure there are no obstacles on the rails to prevent accidental collisions or damage during crane operation. Check the wear condition of the wire rope, a critical aspect for ensuring safety. If the number of broken wires is found to exceed 10% of the total wires, the wire rope must be replaced immediately to ensure safety under load. The oil level of the hydraulic brake is also a mandatory pre-start check; the level should be at 2/3 of the sight glass to ensure the brake system functions correctly during operation. Testing the effectiveness of the emergency stop button is another crucial pre-start step to ensure the equipment can be stopped quickly and effectively in an emergency.
The operator must start the equipment in the correct sequence: first the main power, then the control power, and finally enable the individual mechanisms. During lifting operations, the load must be kept stable, and slanted and tilted is prohibited to prevent load imbalance and potential hazards. During coordinated gantry travel, the operator should closely monitor the current difference between the two drive motors, ensuring it remains below 15% to guarantee normal equipment operation.
In the event of a sudden power outage, the operator should immediately press the emergency stop button to ensure equipment safety. If manual brake release is necessary, it must be performed by two persons working together to ensure safety during the release process. If load swinging occurs, the operator should place the load on the ground at low speed;Forced braking is forbidden to avoid equipment damage or safety incidents.
At the end of each workday, the operator should clean accumulated dust from the rails and check the lubrication status of the wire ropes. Weekly, regularly lubricate the sheave group bearings with No. 3 lithium-based grease to ensure proper equipment operation. Monthly, measure the insulation resistance, ensuring it is ≥1 MΩ, to safeguard electrical safety during operation.
All operators must strictly adhere to safe operating procedures, especially during lifting operations, ensuring certified operators and loads maintain a safe distance of at least 2 meters; staying or directing under or above a suspended load is strictly prohibited. To ensure operational safety, when wind speed reaches 12 meters per second, all outdoor lifting operations must cease immediately to prevent load swinging or falling due to wind influence. Furthermore, for night lifting operations, adequate workplace illumination must be ensured, with illuminance not less than 50 lux, guaranteeing good visibility and operational safety.
During daily use, overloading the equipment is strictly prohibited for any personnel. Removal of limit devices or modification of electrical circuits without authorization is not allowed to ensure safe and reliable equipment operation. Regarding the use of the hook block, directly slinging loads by wrapping the rope around the hook is strictly prohibited to prevent safety hazards caused by uneven force distribution. Additionally, using the gantry travel mechanism for pulling or towing operations is strictly forbidden to prevent equipment damage or safety accidents.
For the weight-type height limiter, its adjustment range should ensure effective operation within a 0.5-meter buffer distance. Infrared anti-collision devices should have an effective detection distance of at least 10 meters to provide early warning and prevent potential collisions. To ensure equipment reliability and safety, the accuracy of the load limiter should be tested monthly, ensuring its alarm function is accurate, with a precision error controlled within ±3%.
Quarterly, conduct detailed inspections of the equipment’s steel structure to detect and promptly address any potential cracks or wear issues. Annually, perform a comprehensive load test to verify the equipment’s load-bearing capacity and stability under extreme working conditions. For reducer lubricating oil management, the initial replacement should occur at 500 operating hours, with subsequent regular replacements every 2000 hours. As for the wire rope, a key component, its service life should be strictly controlled not to exceed two years, or it should be replaced upon meeting the national standard discard criteria.
For the crane, slipping of the hoisting mechanism is usually caused by severe wear of the brake linings. When the thickness of the brake linings falls below 50% of the original value, their braking effectiveness decreases significantly, leading to slipping. Additionally, gantry deviation (crabbing) may stem from the rail elevation difference exceeding the allowable range, causing the trolley to tilt during operation. Differing speeds of the drive motors is another potential cause of gantry deviation.
Table: Crane Common Faults and Solutions Reference Table
| Fault Phenomenon | Possible Cause | Solution | Key Parameter / Standard | Technical Support Information |
|---|---|---|---|---|
| Hoist Slipping | Severe Brake Lining Wear | Replace Brake Linings | Replace if thickness <50% of original | 24hr Hotline: 400-810-8866 |
| Gantry Deviation | Rail Elevation Difference Out of Tol. | Adjust Rail Levelness | Elevation difference must be within tolerance | 48hr On-site Response (Major Fault) |
| Gantry Deviation | Drive Motor Speed Out of Sync | Check Motor Control System & Synchronize Speeds | _ | Lifetime Paid Technical Service |
| Electrical Fault | Contactor Contact Arcing/Erosion | Clean or Replace Contactor Contacts | Contact Resistance ≤0.1Ω | Free replacement for non-human damage within warranty |
| Mechanical Noise | Excessive Bearing Clearance | Replace Bearing | Axial Clearance ≤0.3mm | Genuine Parts Recommended |
| Inverter Alarm E008 | Excessive Mechanical Drive Resistance | Check Drive System Lubrication & Mechanics | _ | Maintain 3-month key part inventory |
| Wire Rope Wear | Natural Wear or Overload Use | Replace Wire Rope (Spec: 6×37+FC-32mm) | Replace if broken wires exceed standard | Procurement Lead Time ~15 workdays |
Table: Crane Maintenance Services and Spare Parts Management Guide
| Service Type | Service Content | Response Time / Cycle | Applicable Conditions | Remarks |
|---|---|---|---|---|
| Technical Hotline | 24/7 Fault Consultation & Remote Guidance | Immediate Response | All Users | Phone: 400-810-8866 |
| On-site Response | Engineer On-site for Major Faults | ≤48 Hours | Critical faults affecting safety | Provide Equipment ID & Fault Description |
| Warranty Service | Free Replacement for Non-Human Damage Parts | Depends on Parts Stock | Within Warranty Period (Typically 1yr) | Provide Purchase Proof |
| Paid Technical Service | Lifetime Professional Repair & Tech Support | Per Contract Agreement | All Users | Includes System Upgrade Services |
| Spare Parts Procurement | Genuine Parts Supply (e.g., Wire Rope, VFD) | ~15 Working Days | Advance Booking Recommended | Recommended Spec: 6×37+FC-32mm |
| Inventory Management | Minimum Key Parts Inventory Level | Continuous Supply | High-Frequency Wear Parts | Recommend 3-month stock for VFDs, etc. |
| Preventive Maintenance | Regular Inspection of Wear Parts (Linings, Bearings) | Every 500 Operating Hrs | All Equipment | Inspection Standards per OEM Manual |
When facing electrical faults, technicians should prioritize checking the status of contactor contacts, ensuring good contact and no signs of arcing or erosion. For mechanical noise issues, carefully investigate bearing clearance; generally, axial clearance should not exceed 0.3mm to ensure normal equipment operation. When the inverter displays an E008 overload alarm, focus on checking the mechanical drive system for excessive resistance.
To better serve our users, for major faults, we promise on-site response service within 48 hours, ensuring timely and effective problem resolution. Within the warranty period, we will replace non-human damaged parts free of charge, demonstrating our confidence in quality and respect for users. Additionally, we provide lifetime paid technical service, ensuring users have no worries.
To ensure efficient and stable equipment operation, we recommend using genuine factory parts for replacement. For the wire rope, a critical component, we recommend using a high-quality product with the specification 6×37+FC-32mm. Furthermore, for inventory management of key components like inverters, we recommend users maintain a stock of at least 3 months’ usage to ensure quick replacement when needed. Considering the procurement lead time is typically around 15 working days, planning and preparing for spare parts in advance is crucial.
Operator training consists of two parts: theoretical training and practical training. The theoretical part covers 8 credit hours, focusing on a comprehensive and detailed explanation of the operating principles, basic structure, functional characteristics, and safety operating procedures of special equipment, ensuring trainees have a deep theoretical understanding as a foundation for subsequent practical operation. Practical training accounts for 16 credit hours, aiming to allow trainees to gain hands-on experience in equipment operation through simulated real environments, mastering practical skills and improving their ability to handle various work situations. After training, trainees will be assessed on subjects including load estimation and emergency handling, aiming to comprehensively evaluate their theoretical knowledge and practical operational ability. Trainees who pass the assessment will be awarded a “Special Equipment Operation Certificate,” proving their qualification to operate such equipment. Additionally, to maintain the professional skill level of operators in sync with equipment updates, it is stipulated that retraining must be attended every two years. Through continuous training and learning, operators can stay proficient with the latest operating methods and safety regulations, better serving production operations.
We provide comprehensive technical support services, including remote diagnostics, on-site commissioning, and optimization modifications. When equipment malfunctions or issues arise, our professional team can quickly locate and resolve problems through remote diagnostic tools, reducing unnecessary downtime. We can also arrange engineers for on-site equipment commissioning, ensuring correct installation and stable operation, and perform optimization modifications based on user needs to enhance equipment performance and usage efficiency. To meet the needs of different users, we also offer customized PLC program upgrade services, developing tailored solutions based on the user’s production process to maximize compatibility with user requirements.
Contact our crane specialists
Send us a message and we will get back to you as soon as possible.
