Drivable Gantry Crane

Drivable Gantry Crane is a common lifting equipment, widely used in factories, warehouses, ports and construction sites. Its design features make it highly efficient and safe in heavy-duty handling and lifting. Drivable Gantry Crane is mainly composed of two main beams, two gantries, crossbeams (or sub-beams), lifting mechanism, operating mechanism and electrical control system. Its structural design enables it to have a large lifting capacity and a wider working range, suitable for a variety of industrial and logistics applications.

The double-beam design provides greater carrying capacity and is suitable for the lifting and handling of heavy materials. The structural design is reasonable, with good stability, reducing the risk in operation. It is suitable for use in large workshops and warehouses and can cover a larger working area. This crane can be operated in a variety of ways (manual, remote control, automation) to adapt to different working environments. Equipped with a variety of safety devices (such as limit switches, overload protection devices, sound and light alarm systems, etc.) to ensure safe operation.

3. Drivable Gantry Crane has become an indispensable equipment in modern industrial production and logistics handling due to its superior performance and wide application fields. Its structural design, technical parameters and safety performance give it obvious advantages in heavy lifting operations and can meet a variety of complex work requirements. Through reasonable selection and regular maintenance, double-girder gantry cranes can operate efficiently and safely in various working environments.

 

Warranty：2 years

Feature：Gantry Crane

Application：widely

Rated Lifting Moment：Different

Product name:double girder electric gantry crane 30 ton for sale

cantilever length:0-15m

Lifting speed:5-15M/MIN

Trolley running speed:20-40M/MIN

Crane running speed:30-50M/MIN

Control method:cabin control/wire rope remote control

Protection grade:IP54

Insulation grade:F

Power supply:3 phase 380V 50hz or request

Colour:request

 

 

1.Main beam

1) The main beam of a Drivable Gantry Crane is an important load-bearing structure of the crane, playing a core role in supporting and carrying heavy objects. I-beams usually use I-beams as the main beam, which has high bending and shear resistance. Box beams are welded from steel plates to form a closed box structure, providing better strength and rigidity, and are suitable for large spans and high loads.

2) The main beam generally uses high-strength steel (such as Q235, Q345, etc.) to ensure its strength, toughness and durability. The selection of materials should comply with relevant standards to ensure the safety of the main beam when carrying loads.

3) The design of the main beam needs to consider the maximum lifting capacity of the crane to ensure that no deformation or damage occurs when lifting heavy objects. Finite element analysis is usually performed according to the load conditions to optimize the cross-sectional shape and size of the beam. The main beam needs to have sufficient rigidity to reduce deflection during operation and ensure the stability of the crane during operation. The calculation of rigidity should follow relevant design specifications and standards to ensure safe use. In order to improve the durability of the main beam, anti-corrosion treatment is usually carried out, such as spraying anti-rust paint or hot-dip galvanizing, to prevent corrosion caused by environmental influences.

4) The main beam of the Drivable Gantry Crane is a key part to ensure the safe, stable and efficient operation of the equipment. Through reasonable design, high-quality material selection and standardized installation and commissioning, the main beam can bear heavy objects and maintain stability under various working conditions. At the same time, regular maintenance and care are also important measures to ensure the long-term safe use of the main beam.

Lifting System

Performance characteristics of the lifting system

1) Stability

The design of the lifting system should ensure good stability during the lifting and lowering of heavy objects, reduce swinging and tilting. The high-rigidity design can effectively reduce load vibration and improve operation safety.

2) Speed control

The motor speed can be adjusted through variable frequency speed regulation technology to achieve smooth lifting and lowering speeds to meet different working conditions. Reasonable speed control can improve operating efficiency and reduce the risk of material damage.

3) Safety

Equipped with limit switches, overload protection devices and other safety measures to ensure that heavy objects will not cause accidents due to unexpected circumstances during the lifting process. Regularly inspect and maintain each part of the lifting system to ensure its normal performance.

 

 

3.End carriage

1) The end beam is usually designed with a frame structure, consisting of upper and lower beams and vertical support columns. The upper beam is connected to the main beam, and the lower beam is connected to the wheel frame. The various components are connected by welding or bolts to form a whole, ensuring the stability and strength of its structure.

2) The end beam bears the weight of the main beam and disperses its load to the ground or track. The end beam provides support for the trolley running mechanism, enabling it to move smoothly on the track. By connecting the main beam and the wheel frame, it provides additional stability and reduces the lateral tilt and swing of the entire crane.

3) The design of the end beam must have sufficient strength and rigidity to withstand the various loads applied by the crane during operation. Static and dynamic loads must be considered during design to ensure safety under extreme working conditions.

4) The end beam is usually made of high-strength steel (such as Q235, Q345, etc.) to ensure its durability and load-bearing capacity. The selection of materials should comply with national or industry standards to ensure the safety and reliability of the equipment. The surface of the end beam is generally treated with anti-corrosion, such as spraying anti-rust paint or hot-dip galvanizing, to extend its service life. Regular inspection and maintenance can prevent corrosion and damage caused by environmental factors.

 

 

4.Crane travelling mechanism

Working principle of the crane running mechanism

1) Lateral movement

When the operator starts the crane running mechanism, the motor starts to run and drives the wheels to rotate through the reducer.The wheels move along the track, thereby realizing the lateral movement of the entire crane in the working area.

2) Speed control

The moving speed of the crane can be achieved by adjusting the speed of the motor to adapt to different operating requirements.The frequency conversion control system can achieve smoother acceleration and deceleration, reducing the risk of material damage.

Performance characteristics of the crane running mechanism

1) Stability

The design of the crane running mechanism should ensure good stability during operation and reduce swing and vibration. Improve the smoothness of operation through reasonable wheel frame design and wheel selection.

2) Carrying capacity

The crane running mechanism needs to be designed to be able to carry the total weight and additional load of the crane to ensure safe operation. The calculation needs to take into account various factors of the maximum load and working environment.

3) Safety

Equipped with a variety of safety devices, such as limit switches, overload protection devices, etc., to ensure safety during operation. Carry out regular inspections and maintenance to ensure that each component is working properly.

5.Trolley travelling mechanism

Components of the trolley operating mechanism

1) Trolley

The trolley is a key component of the crane, carrying the lifting mechanism and hook, and is used to move on the main beam. The trolley is usually made of high-strength materials and designed as a frame structure that can withstand various loads of the crane.

2) Running motor

Provides a power source to drive the trolley to move on the main beam. The motor can be an AC motor or a DC motor, and the appropriate model is usually selected according to the specific load requirements.

3) Reducer

After connecting to the motor, it reduces the speed of the motor and increases the torque to meet the movement requirements of the trolley. Common types of reducers are gear reducers and worm reducers. Choosing a suitable reducer can improve efficiency and reliability.

4) Running wheels

The bottom of the trolley is equipped with wheels, which contact the track on the main beam to ensure the smooth operation of the trolley. The material of the wheel is generally high-strength steel, and the design should ensure the wear resistance and load-bearing capacity of the wheel.

5) Control system

Contains an operating panel, a remote control and a control cabinet, which is responsible for starting, stopping and speed adjustment of the trolley. Modern cranes can be equipped with a wireless remote control system to improve operational flexibility.

6.Crane wheel

1) Design features of wheels

Carrying capacity: The design of the wheel needs to be able to bear the weight of the entire crane and the additional load during operation. During the design process, finite element analysis is required to ensure the strength and stability of the wheel under various working conditions.

Wear resistance: The surface of the wheel needs to have good wear resistance to reduce wear during operation. Heat treatment or surface hardening can be used to improve the wear resistance of the wheel.

Rim design: The rim design of the wheel should ensure that the wheel runs stably on the track and avoids deviation from the track. The height and width of the rim should meet the design requirements to ensure effective contact between the wheel and the track.

2) Working principle of the wheel

Supporting function: The wheel carries the weight of the crane and distributes it evenly to the track to ensure the stability of the entire equipment. During operation, the contact between the wheel and the track determines the smooth operation of the crane.

Movement mechanism: When the crane is running, the motor drives the reducer to rotate the wheel, and the wheel rolls on the track to achieve lateral movement. The rolling characteristics of the wheel reduce friction and improve operation efficiency.

7.Crane Hook

1) Materials and performance of hooks

Material: Hooks are usually made of high-strength alloy steel or forged steel to ensure their load-bearing capacity and durability. The material must meet relevant standards and have good toughness and fatigue resistance.

Load capacity: The load-bearing capacity of the hook is a key design indicator and needs to be reasonably selected according to the rated load of the crane. In general, the rated load of the hook should be greater than the maximum working load of the crane to ensure safety.

2) Working principle of the hook

Connection and lifting: The hook is connected to the steel rope, chain or sling of the lifting mechanism through its upper ring part. During the lifting operation, the lifting system transmits power to the hook, and the load is lifted or lowered through the hook.

Lifting stability: The design of the hook should ensure that the load can remain stable during the lifting process to avoid accidents caused by swinging or tilting. Proper hook design can improve the safety and efficiency of lifting.

Motor

1) Safety design of motors

Overload protection: The motor should be equipped with an overload protection device to prevent equipment damage caused by overload. The overload protection device can be implemented through a current protector or a thermal relay.

Overheat protection: Equipped with a temperature sensor to monitor the temperature of the motor to avoid damage caused by overheating. When the temperature exceeds the set value, the power supply is automatically cut off.

Short circuit protection: Ensure that the motor has a short circuit protection function to prevent the motor from being damaged due to excessive current. Usually achieved through a fuse or a protective relay.

2) Maintenance and care of the motor

Regular inspection: Regularly check the working status of the motor, including current, voltage, and temperature. Ensure that the wiring and insulation of the motor are in good condition to prevent leakage and short circuit.

Cleaning and maintenance: Regularly clean the dust and dirt on the outside of the motor and keep it well ventilated. Ensure that the vents are unobstructed to prevent overheating.

Lubrication: Regularly lubricate the bearings and other moving parts of the motor to reduce friction and improve operating efficiency. Use appropriate lubricating oil or grease to avoid too much or too little.

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Sound and light alarm system & limit switch

1) Sound and light alarm system

Function: The sound and light alarm system is used to send out sound and light signals during the operation of the crane to remind the operator and surrounding personnel to pay attention to safety. When the crane performs dangerous operations (such as overloading, lifting height exceeding the limit, etc.), the system will send out an alarm signal.

Components: The sound device is usually a buzzer or a horn, which can sound an alarm with an adjustable volume to ensure that it can be heard in a noisy environment. The light signal device is usually a flashing LED light or other light source, which can provide a visual warning at night or in a low-light environment. The control module is connected to the control system of the crane and automatically triggers the alarm according to different working conditions.

2) Limit switch

Function: The limit switch is used to monitor the range of motion of the crane to ensure that the crane operates within the specified safety range to prevent equipment damage and personal injury.

There are two main types of limit switches: lifting limit switch and lateral limit switch.

10.Safety Devices

1) Overload protection device

Function: Monitor the load of the crane to prevent overload. When overloaded, the lifting power supply is automatically cut off, the lifting operation is stopped and an alarm is sounded. The load of the hook is monitored in real time through the load sensor. When it exceeds the set value, the system will sound an alarm and cut off the power supply.

2) Limit switch

Function: The limit switch is used to limit the range of motion of the crane to ensure that the equipment is operated in a safe area. It mainly includes upper limit switch, lower limit switch and lateral limit switch. The upper limit switch is activated when the hook rises to the maximum height and cuts off the power supply; the lower limit switch cuts off the power supply when the hook drops to the lowest position; the lateral limit switch cuts off the power supply when the trolley reaches the end of the track.

3) Emergency stop device

Function: In an emergency, it can immediately stop all operations of the crane to prevent accidents. The operator can immediately cut off the power supply and stop all movements of the crane through the emergency stop button or switch.

4) Braking system

Function: The braking system is used to control the speed of lifting and moving to ensure the safe operation of the equipment. Avoid accidental falling of the hanging objects during lifting. During operation, the braking system will automatically adjust the braking force as needed to ensure load stability.

5) Safety device and alarm system

Function: including sound and light alarm devices, which are used to send sound and light signals to remind operators and surrounding personnel to pay attention to safety when the equipment fails or operates abnormally. When a fault or overload is detected, the alarm system is automatically activated to provide an immediate warning.

6) Safety lock device

Function: Prevent the hook from accidentally falling off when it is empty or loaded, and ensure the safety of the hanging objects. The hook or chain is equipped with a safety lock device to ensure that it will not be accidentally opened during operation.

7) Driving protection device

Function: Monitor the operating status of the trolley and the car to prevent deviation, collision, etc. The driving protection device will automatically stop the operation when the equipment is operating beyond the normal range.

11.Control Mode

1) Manual control: The operator directly controls the movement of the crane through buttons or rockers on the manual control panel. Simple and intuitive, suitable for small or specific lifting operations. The operator needs to be near the equipment, which poses certain safety risks.

2) Remote control: The operator uses a remote control to control the operation of the crane within a certain distance. It improves the flexibility and safety of operation, and the operator can stay away from the equipment to avoid potential dangers. The remote control usually has multiple control methods such as buttons and rockers for easy operation.

3) Automatic control: The computer control system realizes the automatic operation of the crane, and automatically completes lifting, walking and other actions according to the set program. It improves the operation efficiency and reduces human intervention. Programmable control is suitable for operation scenarios with high repetitiveness. Regular maintenance and calibration are required to ensure the stability and reliability of the system.

4) PLC control: The programmable logic controller (PLC) is used for control to realize complex logic control and real-time monitoring. It has strong adaptability and can handle multiple control logics, which is suitable for complex operation requirements. It provides real-time monitoring function and can quickly respond to faults and abnormal conditions.

5) Frequency conversion control: The speed of the motor is adjusted by the frequency converter to achieve smooth starting, acceleration and braking of the crane. It reduces mechanical shock and increases the service life of the equipment. It has high energy efficiency and can automatically adjust the operating state according to the load to save energy.

12.Sketch

Main technical

 

 

High load capacity: The double-beam design provides greater load-bearing capacity and is suitable for lifting and handling heavy materials.

Stability: Compared with single-beam cranes, Drivable Gantry Crane are more stable and can effectively avoid the risk of tilting or collapse during operation.

Wide range of applications: Suitable for a variety of environments such as factories, warehouses, construction sites, ports, etc., and can be flexibly used indoors and outdoors. The span and lifting height can be customized according to specific needs to adapt to different work scenarios.

Easy operation: Supports multiple control methods such as manual, remote control, PLC, etc., flexible operation, easy for users to choose. The control system is reasonably designed, which is convenient for operators to get started quickly.

High work efficiency: The double-beam design makes the crane faster when lifting and moving, reduces the operation time, and improves work efficiency. It is suitable for long-term continuous operation and meets high-intensity production needs.

6) Convenient maintenance: The structural design of the Drivable Gantry Crane is relatively simple, which is easy to inspect and maintain.

7) High safety: Equipped with a variety of safety devices such as overload protection, limit switch, emergency stop device, etc., effectively prevent accidents.

 

 

1) Industrial manufacturing: used to manufacture and assemble large mechanical equipment such as generators, machine tools, etc., providing efficient heavy object handling. On automobile production lines, Drivable Gantry Crane are used to lift and transport car bodies, engines and other heavy parts.

2) Construction engineering: used to lift concrete components, steel beams and other heavy building materials on construction sites, providing safe and reliable lifting operations. Participating in the construction of large bridges, it is able to lift bridge components and equipment and adapt to complex construction environments.

3) Warehousing and logistics: In warehouses and logistics centers, Drivable Gantry Crane are used to carry and stack heavy goods to improve warehousing efficiency. Suitable for container loading and unloading operations at ports, it can handle container transportation quickly and efficiently.

4) Metallurgical industry: used for heavy object handling during steel smelting, casting and molding, capable of handling high temperatures and heavy materials. In metal processing plants, it is used to carry and handle various metal products and raw materials.

5) Energy industry: used for equipment installation, maintenance and material handling in power plants to ensure the normal operation of equipment. In the construction and maintenance of wind power and solar energy facilities, equipment and components are hoisted.

6) Mining and quarrying: used in mines to transport and handle heavy ores and equipment to ensure the continuity and safety of production.

7) Waste treatment and recycling: used for the treatment and transportation of garbage and waste to ensure efficient transportation and treatment of waste. Used in recycling companies to transport recyclable materials such as metals, plastics, etc. to improve work efficiency

 

 

1) Demand analysis and design: Communicate with customers to understand their specific needs, including the specifications, load capacity, working environment, etc. of the crane. Carry out preliminary design according to the needs to determine the structural form, size, lifting height, span, etc. of the crane. Complete detailed design drawings, including the design of various components such as the main beam, end beam, lifting system, and operating mechanism.

2) Material preparation: Select appropriate materials such as steel, aluminum alloy, etc. according to the design requirements to ensure that the materials have good load-bearing capacity and corrosion resistance. Purchase the required materials from suppliers to ensure that the quality of the materials meets the design requirements.

3) Parts processing: Cut the purchased raw materials according to the design drawings and prepare them into the shapes of various parts. Weld the main beam, end beam, bracket, etc. to ensure the stability of the structure.

Mechanical processing. Perform necessary mechanical processing, such as drilling, milling, etc., to ensure the accuracy and fit of the parts.

4) Surface treatment: Clean the processed parts to remove surface dirt and grease. Perform anti-rust treatment, such as spraying anti-rust oil or electroplating, to ensure the durability of the parts in the working environment. Paint according to customer requirements to improve the appearance and protective performance of the equipment.

5) Component assembly: Preliminary assembly of components such as the main beam, end beam, walking mechanism, and lifting mechanism. Install electrical components such as motors, control systems, and limit switches to ensure that the system can operate normally. Perform final assembly of all components to ensure that the parts are tightly connected and not loose.

6) Debugging and testing: Perform no-load test on the assembled crane to check whether the motion mechanism, braking system, control system, etc. are normal. Test under rated load to confirm the stability and safety of the crane under load. Make necessary adjustments and optimizations based on the test results to ensure that the equipment performance meets the design requirements.

7) Quality inspection: Perform strict quality inspections on each component and the entire crane to ensure compliance with relevant standards and specifications. Prepare a quality inspection report to record test data and existing problems.

8) Delivery and installation: Final cleaning and packaging of the crane, ready for delivery to the customer.

On-site installation. According to customer needs, installation and debugging are carried out at the site of use to ensure that the equipment can operate normally. Train the customer's operators to teach them the use of the equipment and safety precautions.