Box Type Electric Hoist Gantry Crane Supplier

Box type electric hoist gantry crane

Product Introduction

Single-beam gantry crane is a common material handling equipment, widely used in factories, freight yards, ports and construction sites. It consists of a single main beam and two supporting legs on both sides. It can move horizontally on two tracks, and the hook can be lifted and lowered vertically by a trolley.

The design of single-beam gantry crane is relatively simple. The main beam crosses the working area through the supporting legs on both sides, which is suitable for the handling of light and medium-sized materials. Compared with double-beam gantry crane, single-beam gantry crane has lower cost and relatively less maintenance cost, which is particularly suitable for small and medium-sized enterprises or low-intensity operation requirements. Single-beam gantry crane is more flexible in structure and suitable for small-space working environment. It can be designed as mobile or fixed as needed, and can be adjusted according to the changes in the work site when in use. The operating system usually includes ground manual control, remote control operation or cab operation. The user can choose the appropriate operation mode to improve work efficiency. Modern single-beam gantry crane is equipped with a variety of safety protection devices, such as limit switches, overload protection and emergency stop buttons, to ensure safe operation.

3. The single beam is usually made of steel and carries the main load of the crane. It is designed as a box-type or I-shaped structure with high strength and good torsion resistance. The support legs are installed at both ends of the main beam to evenly distribute the weight of the crane on the track or the ground. The lifting mechanism includes an electric hoist or winch, which is responsible for the vertical lifting of materials and is equipped with transmission devices such as wire ropes or chains. The operating mechanism is responsible for the forward and backward movement of the crane along the horizontal track and is driven by an electric motor. The electronic control system provides power control to ensure the normal operation of the equipment, and is equipped with a variety of protection measures, such as overload protection, phase sequence protection, etc.

Warranty of core components：1 Year

Core Components：PLC, Bearing, Gearbox, Motor, Gear

Condition：New

Warranty：1 Year

Weight (KG)：500 kg

Feature：Gantry Crane

Product name：Single Girder Gantry Crane

Color：Customized

Capacity：1-20t

Type：Single Girder

Power supply：110V/220V/230V/380V/440V

Control Method：Ground Control+ Remote Control (customized)

Lifting mechanism：Eliectric Hoist

Work Duty：A3-A4

 

Pictures & Components

1.Main beam

1) Common forms:

I-beam: This structure is simple and easy to manufacture, and is often used in medium and light cranes. The upper and lower flanges of the I-beam provide sufficient bending strength, while the middle web provides shear strength.

Box beam: The box-type main beam has higher strength and stability and is usually used in situations where a larger load-bearing capacity is required. It consists of two upper and lower steel plates (flanges) and two left and right webs to form a closed box structure with better torsion resistance and higher strength.

2) Material: The main beam is generally made of high-quality steel, such as Q235, Q345, etc., with good load-bearing capacity and durability. Choosing the right material can ensure the strength of the main beam while reducing its own weight, thereby improving the overall performance of the crane.

3) Span and length: The length and span of the main beam are usually customized according to the specific work site and needs. The span usually depends on the distance between the support legs to ensure that the crane can cover the entire working area. The design of the main beam must ensure that no obvious deformation or bending occurs within the span.

4) Installation method: The main beam is fixed to the supporting legs by welding or bolting. There are usually trolley tracks at both ends of the main beam, and the electric hoist or other lifting equipment runs on the tracks on the main beam to achieve lateral movement.

Lifting System

Working principle of lifting system

1. Power transmission: The lifting system is powered by an electric motor, which converts the high-speed rotating motor output into a low-speed, high-torque motion suitable for lifting through a reducer. The power output of the reducer is transmitted to the drum, which drives the wire rope or chain to lift or lower the load.

2. Load lifting and lowering: When the lifting motor rotates forward, the drum begins to wind the wire rope and the load is lifted; when the motor rotates reversely, the drum releases the wire rope and the load is lowered. The entire process is precisely controlled by the electronic control system to ensure smooth and safe lifting.

3. Safety monitoring: The safety protection device of the lifting system will monitor in real time during the operation of the equipment to ensure that when the load exceeds the set range and the hook reaches the upper and lower limits, the system can automatically shut down and sound an alarm to ensure the safety of operators and equipment.

 

3.End carriage

Structural design:

1) The end beam is usually designed as a box structure or I-beam structure, which has high bending and torsion resistance. The box structure is stronger and suitable for larger loads and complex working environments, while the I-beam structure is lighter and suitable for small and medium-sized cranes.

2) Wheel sets are installed at both ends of the end beam, which are driven by motors to move the crane horizontally along the track. These wheels are usually installed at the bottom of the end beam and use rolling bearings to reduce friction.

3) The design of the end beam must ensure that the crane remains horizontal during operation to reduce tilting and instability caused by heavy loads.

 

 

4.Crane travelling mechanism

Working principle of the crane running mechanism

1) Power transmission:

When the operator starts the crane running, the motor starts to rotate after being energized, and transmits power to the reducer through the coupling. The reducer reduces the output speed of the motor and transmits power to the driving wheel to drive the crane to move on the track.

2) Wheel operation:

The driving wheel rotates along the track driven by the motor, and the entire crane moves forward or backward along the preset track. The driven wheel cooperates with the driving wheel to keep the crane balanced and move smoothly.

3) Braking and limiting:

When the operator issues a stop command or triggers the limit switch, the motor stops running, and the brake is activated at the same time, quickly stopping the rotation of the wheel to ensure that the crane stops at the predetermined position.

5.Trolley travelling mechanism

Features of the trolley operating mechanism

1) Flexible lateral movement:

The trolley operating mechanism is designed to move quickly and flexibly along the main beam, providing precise positioning of the hoisted objects. Through variable frequency speed regulation technology, the trolley can run smoothly at different speeds, which is particularly suitable for working environments that require high-precision positioning.

2) Compact structure and light weight:

The trolley operating mechanism is usually designed to be very compact and has a light deadweight, thereby reducing the load on the main beam. The compact design also makes it suitable for work occasions with limited space, improving the overall adaptability of the crane.

3) Efficient transmission:

The trolley works with efficient reducers, wheel sets and motors to quickly respond to operating instructions and complete efficient material handling tasks.

4) Smooth operation:

The trolley operating mechanism ensures that the trolley is stable and vibration-free during operation through the smooth power output of the motor and reducer, combined with the high-precision design of the wheel set, reducing the impact on the material.

Safe and reliable: The trolley operating mechanism is equipped with complete safety devices, including brakes, limit switches, etc., to ensure that every operation link of the trolley is safe and controllable, effectively reducing the risk of accidents.

6.Crane wheel

The operation principle of the wheel

1) Power transmission:

When the motor of the trolley or car is started, the driving wheel starts to rotate under the drive of the motor. The driving wheel pushes the crane forward or backward along the track through the friction with the track.

2) Rolling operation:

The wheel rolls through the contact surface between its outer edge and the track. The design of the wheel ensures smooth operation under moderate friction and reduces vibration and noise during operation.

3) Track restriction:

The wheel rim and the track are used together to effectively prevent the crane from derailing during operation. The rim limits the lateral movement of the wheel when the wheel is running, so that it always runs along the straight or curved track.

7.Crane Hook

Precautions for the use of hooks

1) Avoid overloading:

When using the hook, it must be hoisted strictly according to its rated load. Overloading will cause the hook to deform or even break, causing serious safety accidents.

2) Regular inspection and maintenance:

The hook should be inspected regularly, especially the hook body, hook tongue and connection parts. The inspection content includes whether the hook has cracks, deformation, excessive wear or corrosion.

The wire rope or chain connected to the hook also needs to be inspected and lubricated regularly to ensure that its connection with the hook is safe and reliable.

3) Avoid side pull of the hook:

When using the hook, the load should be kept in the vertical direction to avoid side pull or eccentric load to prevent uneven force on the hook, causing twisting or damage.

4) Be careful when rotating:

When rotating the hook, ensure smooth operation to avoid rotating too fast or too hard to cause the wire rope to be entangled or knotted, affecting the safety of lifting.

 

Motor

Working principle of electric motor

1) Conversion of electrical energy into mechanical energy: The electric motor is energized through the stator winding to generate a rotating magnetic field. The rotating magnetic field acts on the rotor, generating electromagnetic force, which drives the rotor to rotate and drives the mechanical transmission device of the crane.

2) Starting of the motor: At the time of starting, the motor receives current and gradually increases the torque through the generated magnetic field, pushing the parts of the crane to start moving. Depending on the type of motor, the starting method may include direct starting, variable frequency starting or reduced voltage starting.

3) Speed ​​control: The speed of the motor can be controlled by changing the input voltage, frequency or rotor resistance. For example, variable frequency motors achieve smooth speed regulation of the motor by adjusting the input frequency, ensuring that the crane can maintain the appropriate speed under different working conditions.

4) Braking and stopping: When the motor stops supplying power, the built-in brake or external brake device can quickly stop the rotor from rotating, ensuring that the crane stops safely at the predetermined position. The brake device can be an electromagnetic brake or a mechanical brake.

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Sound and light alarm system & limit switch

1) Sound and light alarm system function

Fault alarm: When the crane fails or operates abnormally, the sound and light alarm system will sound an alarm to prompt the operator to check and deal with the problem in time.

Overload alarm: When the crane load exceeds the rated value, the system will sound an alarm to prevent equipment damage and safety accidents caused by overload.

Safety reminder: When the crane is lifting, moving, etc., the sound and light alarm system can be used to remind people around to pay attention to safety and avoid accidents.

2) Limit switch function

Safety protection: The limit switch can cut off the power supply when the equipment reaches the preset limit position to prevent mechanical damage and safety hazards caused by exceeding the limit.

Automatic control: Linked with the motor control system, the action of the limit switch can automatically control the start and stop of the motor, improving the automation of the equipment.

Fault detection: The status monitoring of the limit switch can help detect the operating status of the crane and detect and deal with potential problems in time.

 

10.Safety Devices

1. Overload protection device

Function: Prevent the crane from exceeding its rated load during lifting. The overload protection device monitors the load through sensors to ensure that the load is within a safe range.

Working principle: When the load exceeds the set value, the overload protection device will automatically cut off the power supply to the motor, stop the lifting mechanism, and issue an audible and visual alarm.

2. Limit switch

Function: Prevent the crane from exceeding the set operating range during lifting or moving.

3. Braking device

Function: Ensure that when the motor stops or fails, it can brake quickly and effectively to prevent the load from falling freely.

4. Anti-collision device

Function: Prevent the crane from colliding with other equipment or obstacles during movement.

5. Sound and light alarm system

Function: In the event of an abnormal situation, the operator and surrounding personnel are prompted by sound and light.

6. Safety lock

Function: Prevent accidental start-up through mechanical locking when the crane is maintained or inspected.

Working principle: The safety lock is usually enabled when the equipment is not in working condition to ensure the safety of maintenance personnel.

7. Overheat protection device

Function: Monitor the temperature of the motor and other key components to prevent damage or failure caused by overheating.

Working principle: The temperature sensor monitors the equipment temperature in real time and automatically stops the motor operation when the preset safety threshold is reached.

8. Electrical protection device

Function: Protect the electrical system of the crane to prevent electrical faults such as short circuit and overload.

9. Wind protection device

Function: When operating outdoors, prevent strong winds from affecting the stability and safety of the crane.

Working principle: Equipped with a wind speed sensor, when the wind speed exceeds the safety range, the crane operation is automatically stopped.

10. Emergency stop device

Function: In an emergency, quickly cut off the power supply of the crane and stop all operations.

Working principle: Usually equipped with an emergency stop button, the operator can press it immediately in a critical moment to ensure the safety of the equipment.

11.Control Mode

1. Ground handle control: The operator controls the crane directly on the ground through a wired handle. Easy to operate, suitable for beginners. The operator can intuitively observe the hoisted object and the surrounding environment. Suitable for small cranes or short-distance operations.

2. Wireless remote control: The operator controls the crane using a wireless remote control. The operator can operate at a safe distance to avoid potential dangers. Not limited by the length of the control line, the crane can be controlled in a wider range. Suitable for larger or complex operating occasions, such as construction sites, warehouses, etc.

3. Cab control: The operator operates in the cab of the crane and controls the crane through joysticks, buttons and control panels. It can monitor multiple operations at the same time, suitable for complex or high-frequency operations. The operator can operate in a comfortable environment and reduce fatigue.

4. Frequency conversion control: The frequency and voltage of the motor are adjusted by the frequency converter to achieve stepless speed regulation of the motor. Smooth start and stop can be achieved, reducing the impact on mechanical equipment. Automatically adjust the power according to load changes to save energy. Suitable for operations that require precise positioning, such as assembly and commissioning work.

5. Automatic control: Combined with modern automation technology, intelligent control of the crane is realized. It can automatically adjust the working parameters according to environmental changes.

6. PLC control: Control of various parts of the crane is realized through a programmable logic controller (PLC). It can be programmed according to specific process requirements to achieve personalized control. It can automatically detect faults and give alarm prompts for easy maintenance. It is widely used in occasions that require high-precision control and automation.

12.Sketch

 

 

 

Main technical

 

Advantages

1. Simple structure

Compact design: The structure of the single-beam gantry crane is relatively simple, with only one main beam, which is easy to manufacture, transport and install.

Easy maintenance: Due to its simple structure and low failure rate, maintenance and overhaul are relatively easy.

2. Economical and practical

Cost-effective: Compared with other types of cranes, the manufacturing cost and operating cost of the single-beam gantry crane are lower, which is suitable for enterprises with limited budgets.

High cost performance: In small and medium-sized lifting operations, the single-beam gantry crane provides a good balance between performance and price.

3. Strong flexibility

Wide range of application: It can be used in a variety of occasions (such as factories, warehouses, workshops, etc.) and is suitable for a variety of lifting needs.

Flexible operation: It can be operated in a small space, especially suitable for environments with high space requirements.

4. High safety

Complete safety devices: Equipped with a variety of safety devices (such as limit switches, overload protection, etc.) to ensure the safety of operation.

Strong stability: The low center of gravity design and good structural strength make the crane more stable when working and reduce the risk of overturning.

5. Simple operation

Easy to use: The operation control is relatively simple, suitable for operators of all experience levels, reducing training costs.

Intuitive control: Through manual or wireless remote control, the operator can intuitively control the crane and improve work efficiency.

6. High lifting height

Strong adaptability: Single-beam gantry cranes can be designed with higher lifting heights as needed, suitable for the handling of various goods.

Suitable for bulk materials: Especially suitable for lifting and handling bulk materials in industries such as construction, steel, and mining.

7. Low energy consumption

Low power consumption: Compared with other types of cranes, single-beam gantry cranes have lower energy consumption during operation, which is environmentally friendly and energy-saving.

Frequency control: Optional frequency conversion control system can be used to adjust the power according to the load conditions to further save energy.

 

Application:

1. Industrial Manufacturing

Machinery workshop: used to lift and move mechanical parts, tools and equipment to support the efficient operation of the production line.

Assembly line: Move and assemble large parts in the production process to improve production efficiency.

2. Warehousing and logistics

Warehouse: used to move and stack goods in a storage environment to improve the efficiency of storing and accessing items.

Container handling: used for loading and unloading and moving containers in ports and freight centers.

3. Construction

Construction site: used to lift construction materials (such as steel bars, prefabricated concrete parts, etc.) to speed up construction progress.

Large structure installation: lift and install large structural parts (such as steel beams, wind turbine towers, etc.) in high-altitude operations.

4. Mining and quarrying

Ore handling: used to lift and move ore, equipment and materials in mines to support mining operations.

Quarries: used to lift and move heavy objects such as stone, sand and gravel.

5. Power industry

Power plant: used to maintain and repair power generation equipment (such as generators, transformers, etc.) to improve operation safety and efficiency.

Power facility construction: used to transport and install large equipment in power facility construction.

6. Shipbuilding and repair

Shipyard: used to lift and move hulls, equipment and materials in the process of shipbuilding and repair.

Dock: used for loading and unloading and maintenance operations of ships.

7. Chemical industry

Chemical handling: used to transport chemical raw materials and products to improve production and transportation efficiency.

Tank operation: ensure safe and efficient operation when storing and transporting chemicals.

Crane production procedure

1. Demand Analysis and Design

Demand Collection: Communicate with customers to understand their specific needs and usage environment, including lifting capacity, lifting height, span, etc.

Design Plan: Carry out preliminary design according to the needs to determine the technical parameters and overall structure of the crane.

CAD Modeling: Use computer-aided design software (such as AutoCAD, SolidWorks, etc.) to draw detailed engineering drawings, including the dimensions and specifications of each component.

2. Material Preparation

Material Selection: According to the design requirements, select suitable steel, aluminum or other materials to ensure sufficient strength and durability.

Material Procurement: Purchase the required raw materials according to the material list, including main beams, end beams, wheels, hooks and other components.

3. Processing and Manufacturing

Cutting: Cut large pieces of material into the required size according to the design drawings.

Forming: Bend, weld, drill and other processes are performed on the cut materials to form main beams, end beams, brackets and other components.

Surface Treatment: Surface treatment is performed on the processed parts, including sandblasting, rust removal, painting, etc., to improve corrosion resistance and aesthetics.

4. Assembly of components

Main beam assembly: weld or bolt the main beam, end beam and other supporting structures to form an overall frame.

Hoisting system installation: install hoisting system components such as motors, reducers, drums, hooks, etc. to ensure smooth operation of the system.

Operating mechanism installation: install the operating mechanisms of the trolley and the trolley, including wheels, tracks and drive systems.

5. Electrical system wiring

Electrical component installation: install electrical components such as control boxes, switches, inverters, limit switches, etc.

Wiring: perform cable wiring according to electrical drawings to ensure that the electrical system is safe and reliable.

Testing: perform preliminary tests on the electrical system to ensure that all functions are normal.

6. Overall debugging

System testing: perform overall debugging of the crane, test various functions such as lifting, moving, braking, etc., to ensure smooth operation.

Safety detection: check whether various safety devices (such as overload protection, limit switches, sound and light alarms, etc.) are working properly.

7. Quality inspection

Internal inspection: conduct a comprehensive quality inspection of the whole machine to ensure that all indicators meet the design requirements and safety standards.

External inspection: If necessary, invite a third-party organization to conduct external inspection to ensure the qualification of the product.

8. Delivery and installation

Packaging and transportation: Pack qualified cranes and arrange transportation to the customer's designated location.

On-site installation: Install and debug the crane at the customer's site to ensure that the installation meets safety standards.

Training and delivery: Train the customer's operators, explain the use, maintenance and safety precautions of the equipment, and officially deliver it for use.

9. After-sales service

Regular maintenance: Provide regular maintenance and maintenance services to ensure the long-term safe and stable operation of the equipment.

Fault handling: Provide fault diagnosis and repair services according to customer needs to ensure that the customer's equipment can be restored to operation in a timely manner.