Monorail Overhead Crane

 

 

A Monorail Overhead Crane is a lifting equipment that is horizontally suspended above workshops, warehouses, and material yards. Because its two ends are located on tall cement columns or metal supports, resembling a bridge, it is named. This design allows the crane to run longitudinally along the tracks laid on both sides of the elevated structure, thus fully utilizing the space below for material lifting.

The LD type electric single beam bridge crane adopts a box shaped main beam optimized by computer design, which has the characteristics of high stiffness, light weight, and compact structure. Its process ensures the accuracy and reliability of the manufacturing process, including techniques such as automatic welding and non-destructive testing. The operation modes of Monorail Overhead Crane are diverse, including ground handle, wireless remote control, and cab. The cab has two types: open and closed, meeting the needs of different working environments.

3) Monorail Overhead Crane are widely used in indoor and outdoor industrial and mining enterprises, steel and chemical industries, railway transportation, ports and terminals, as well as logistics turnover departments and places. It not only improves production efficiency, but also improves working conditions, making it an indispensable and important tool in modern industrial production. Each crane must be clearly labeled with its rated lifting capacity to ensure that the operator understands its carrying capacity. During work, no one is allowed on the bridge or using hooks to transport people, in order to prevent accidents from occurring. No one is allowed to drive the crane without an operating license or under the influence of alcohol, to ensure the safety awareness and reaction ability of the operators.

 

Warranty：2 years

Weight (KG)：10000 kg

Feature:Bridge Crane

Painting color:Yellow or red or client's demands

Consultation:Free

Main electrical parts:Siemens or Schneider

Operational method:press button or remote control or cab for chosen

Oversea installation:Supply

After-sales Service:Supply

 

 

 

Monorail Overhead Crane

1.Main beam

1) The main beam is usually composed of an upper cover plate, a lower cover plate, and a vertical web plate in the middle, forming a closed box structure. This structure not only ensures the strength and rigidity of the main beam, but also facilitates the arrangement of internal reinforcement bars to enhance its load-bearing capacity. The material selection of the main beam has a direct impact on its performance. High strength steel such as Q345 is usually used, which has good mechanical properties and welding characteristics, and can meet the strength and toughness requirements of the main beam.

2) The manufacturing process of the main beam includes key steps such as cutting, forming, and welding. Accurate processing and high-quality welding are key factors in ensuring the performance of the main beam. Meanwhile, the quality of the weld seam directly affects the overall strength and service life of the main beam. When designing the main beam, sufficient safety factors need to be considered to ensure the integrity and stability of the structure even under extreme working conditions. This usually involves detailed mechanical analysis and testing of the main beam to ensure its safety and reliability within the specified working range.

3) Regular inspection and maintenance are crucial for extending the service life of the main beam. The inspection content includes cracks, deformation, corrosion, etc. Timely maintenance and necessary reinforcement measures can effectively prevent accidents from occurring.

Lifting System

1) Drive device: The drive device usually includes an electric motor, which is the power source of the lifting mechanism. The electric motor is connected to the high-speed shaft of the reducer through a coupling, and the reducer is used to reduce the speed and increase the torque to meet the needs of lifting.

2) Transmission device: The transmission device mainly includes components such as reducer, coupling, and transmission shaft, which work together to convert the high-speed rotation generated by the electric motor into a speed suitable for the rotation of the drum.

3) Winding system: The winding system consists of a drum, steel wire rope, and pulley assembly, and is a key component for achieving vertical movement of goods. One end of the steel wire rope is fixed on the drum, and the other end is connected to a hook or other retrieval device through a pulley system. When the drum rotates, the steel wire rope will be rolled in or released, thereby driving the hook up or down.

4) Brakes and safety devices: Brakes are used to control the stopping and positioning of goods, while preventing safety accidents caused by the free fall of goods in emergency situations. Common safety devices also include overload limiters and limit position limiters, which can prevent overload and overtravel issues during operation.

 

3.End carriage

1) The end beam is located at both ends of the main beam of the single beam bridge crane and is an important component connecting the main beam and the walking mechanism. The end beam not only supports the main beam, but also allows the crane to move on the track through its wheels. The main function of the end beam is to support the main beam and bear the load generated by the lifting object. Meanwhile, the wheels on the end beam are responsible for the lateral movement of the crane, enabling the entire equipment to cover a larger working area.

2) The end beam is usually formed by welding U-shaped channel steel formed by rolling steel plates, which ensures sufficient strength and is easy to install and maintain. In the design of end beams, the connection method with the main beam, such as bolt connection or welding, is usually considered. The manufacturing process of end beams includes multiple steps such as cutting, forming, and welding. Accurate processing and high-quality welding are key factors in ensuring the performance of end beams. The quality of the weld seam directly affects the overall strength and service life of the end beam.

3) Each crane must be clearly labeled with its rated lifting capacity to ensure that the operator understands its carrying capacity. During work, no one is allowed on the bridge or using hooks to transport people, in order to prevent accidents from occurring. No one is allowed to drive the crane without an operating license or under the influence of alcohol, to ensure the safety awareness and reaction ability of the operators.

 

4.Crane travelling mechanism

1) The driving mode of the large vehicle operating mechanism is mainly divided into two forms: centralized driving and separate driving. Centralized drive is driven by an electric motor through a transmission shaft to move the wheels on both sides, while separate drive is driven by two motors of the same specifications through couplings and reducers to drive the wheels of the large vehicle. The large vehicle operating mechanism must be equipped with brakes to ensure safe parking within the allowable braking range after power failure. When the sliding distance of the large vehicle exceeds the specified value after power failure during normal operation, the brake should be adjusted immediately to ensure that its braking meets the requirements.

2) The large vehicle should be equipped with a terminal to form a limit device, and corresponding limit device safety touch gauges should be installed at the two terminals of the large vehicle travel to ensure that the limit device rotating arm is touched and the normally closed contact is opened before the large vehicle reaches the end of the track to cut off power and stop the vehicle; Corresponding limit safety contact gauges should be installed between two cranes on the same track. When two vehicles collide, they should touch each other's limit switch arm and open the contact to cut off power, in order to prevent the collision of the two vehicles.

3) The four corners of the bridge frame of the overhead crane must be equipped with spring or hydraulic buffers, and metal frame type stoppers with hardwood or rubber pads must be installed at the end of each track of the crane. This can prevent the crane from derailing, absorb the kinetic energy of the crane's movement, buffer and reduce vibration, and protect the building of the crane from damage.

5.Trolley travelling mechanism

1) Basic concept: The running mechanism of a small car is usually composed of an electric motor, a reducer, a transmission shaft, wheels, etc. Through the collaborative work of these components, the smooth movement and precise positioning of the small car are achieved.

2) Main function: The main function of the trolley operating mechanism is to support the cargo and enable it to move laterally on the main beam, thereby meeting the lifting requirements at different positions. At the same time, it also undertakes the task of partial load transmission, transferring the weight of the goods to the main beam through the trolley.

3) Design features: The design of the trolley operating mechanism needs to consider various factors, such as load capacity, operating speed, track conditions, etc. In order to ensure the smooth operation and safety of the car, high-quality materials and advanced manufacturing processes are usually used.

4) Safety precautions: When using the trolley operating mechanism, special attention should be paid to safety precautions. For example, the fastening and wear of each component should be checked regularly to ensure the reliability and effectiveness of the brake; During the operation, it is necessary to avoid violations such as overloading and diagonal pulling and lifting; Suspend use in adverse weather conditions, etc.

5) Maintenance: In order to extend the service life of the car's operating mechanism and ensure its normal operation, regular maintenance work is required. This includes cleaning, lubricating, tightening, and adjusting various components, as well as timely replacement of damaged parts.

6.Crane wheel

1) A wheel is usually composed of an axle, a hub, and a rim. The axle is connected to the small or large vehicle of the crane, the hub is fixed to the axle, and the rim is the part in contact with the track. The design and manufacturing quality of the wheels directly affect the operational stability and safety of the crane.

2) The main function of the wheels is to support the weight of the crane and enable it to move smoothly on the track. At the same time, the wheels also need to withstand various forces from the crane, such as vertical loads, horizontal loads, and impact loads. Therefore, the wheels need to have sufficient strength and wear resistance to ensure their long-term stable operation.

3) The design of wheels needs to consider various factors, such as load capacity, operating speed, track conditions, etc. Generally speaking, the larger the diameter of the wheel, the better its load-bearing capacity and operational stability. However, the diameter of the wheels should not be too large, otherwise it will increase the height and cost of the crane. In addition, the material and manufacturing process of the wheels can also affect their performance and lifespan.

7.Crane Hook

1) Hooks are usually made of high-quality steel with sufficient strength and wear resistance to ensure they can withstand the weight of goods and remain stable during lifting. The design and manufacturing quality of the hook directly affect the efficiency and safety of the crane.

2) The main function of the hook is to connect the crane and the cargo, allowing the cargo to be lifted and transported vertically. At the same time, the hook also needs to withstand various forces from the cargo, such as gravity, inertia, and wind force. Therefore, the hook needs to have sufficient strength and stability to ensure that it will not break or deform during the lifting process.

3) The design of the hook needs to consider multiple factors, such as load capacity, cargo type, working environment, etc. Generally speaking, the shape and size of the hook will be customized according to the characteristics and requirements of the goods. For example, for some heavy goods, larger sized hooks may be required; For some light goods, smaller sized hooks can be used. In addition, the material and manufacturing process of the hook can also affect its performance and lifespan.

4) When using a hook, some safety precautions need to be taken into account. For example, the wear and crack condition of the hook should be checked regularly to ensure its normal operation; During the operation, it is necessary to avoid violations such as overloading and diagonal pulling and lifting; Suspend use in adverse weather conditions, etc.

Motor

1) An electric motor is a device that converts electrical energy into mechanical energy, typically consisting of a stator, rotor, and bearings. In a single beam bridge crane, the electric motor is connected to various operating mechanisms of the crane through a reducer and transmission shaft to provide power.

2) The main function of the electric motor is to provide power for the crane and drive its various operating mechanisms to work. Meanwhile, the electric motor can also adjust the operating speed and direction of the crane as needed to meet different lifting requirements.

3) The design of an electric motor needs to consider various factors, such as load capacity, operating speed, working environment, etc. Generally speaking, the power and speed of the electric motor will be customized according to the needs of the crane. In addition, the material and manufacturing process of the electric motor can also affect its performance and lifespan.

4) In order to extend the service life of the electric motor and ensure its normal operation, regular maintenance work is required. This includes cleaning, lubricating, tightening, and adjusting the motor, as well as timely replacement of damaged components.

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Sound and light alarm system & limit switch

1) The sound and light alarm system is a safety device that can emit sound and light signals, usually consisting of a buzzer, flash, and control circuit. In Monorail Overhead Crane, the sound and light alarm system is used to remind operators to pay attention to the operating status and abnormal situations of the crane. The main function of the sound and light alarm system is to issue an alarm signal when the crane encounters abnormal situations, reminding operators to take timely measures to avoid accidents. At the same time, limit switches can restrict the operating range of the crane, preventing it from exceeding the predetermined area and causing dangerous situations such as collisions or falls.

3) The design of sound and light alarm system needs to consider various factors, such as alarm volume, light brightness, control circuit, etc. Generally speaking, the alarm volume and light brightness need to be large enough to ensure that they can attract the attention of operators; The control circuit needs to have high sensitivity and good reliability to ensure the accuracy and timeliness of the alarm signal. The design of limit switches needs to consider factors such as sensitivity, accuracy, and installation position to meet the needs of different occasions.

4) Regular maintenance and upkeep are necessary to extend the service life of the equipment and ensure its normal operation. This includes cleaning, lubricating, tightening, and adjusting the equipment, as well as timely replacement of damaged parts. At the same time, attention should be paid to the storage environment of the equipment to avoid being affected by factors such as humidity, high temperature, or corrosive gases.

10.Safety Devices

Monorail Overhead Crane

1) Overload protection device: prevent the crane from overloading. When the actual load of the crane exceeds the rated lifting weight, the overload protection device will automatically cut off the power supply or sound an alarm to prevent damage to equipment and personnel.

2) Emergency stop device: used to manually stop the operation of the crane in an emergency. The operator can quickly cut off the power supply of the equipment by triggering the emergency stop button to prevent accidents.

3) Windproof device: prevent the crane from being blown by strong winds when working outdoors. The windproof device can be a mechanical locking device or an electric locking device. When the wind speed exceeds the safety standard, the crane will automatically lock to prevent the equipment from being dangerous due to wind.

4) Electrical protection device: prevent equipment damage or safety accidents caused by electrical faults. Electrical protection devices include short-circuit protection, undervoltage protection, phase failure protection, etc., which can automatically cut off the power supply when the electrical system is abnormal to prevent damage to the equipment or affect safety.

5) Anti-sway device: reduce or prevent the swing of the hook and load during lifting, ensure the stability of material handling, and prevent the material from falling off due to swinging.

6) Buffer device: A buffer is installed at the terminal position of the crane. When the equipment or vehicle approaches the end of the track, the buffer device can absorb part of the impact force to avoid damage to the equipment or personnel.

11.Control Mode

1) Ground handle control: The operator controls the operation of the crane by holding a control handle connected by a cable. There are multiple buttons on the handle, which are used to control the lifting, lateral movement and trolley movement of the crane. The cable is generally of a certain length, allowing the operator to operate at a safe distance.

2) Wireless remote control: The operation of the crane is controlled by a wireless remote control, which usually has buttons or rockers to control lifting, lateral movement and trolley operation. Without cable connection, the operator can move freely and operate the equipment at a long distance.

3) Cab control: The operator sits in the cab installed on the crane and operates directly through handles, buttons or joysticks. The cab is usually installed on the trolley or car of the crane, and the operator can directly observe the lifting operation site.

4) Centralized control (PLC control system): Use a programmable logic controller (PLC) for automated control to control the various actions of the crane through pre-programmed programs. The operator can control and monitor the operating status of the crane in the central control room or remotely through the human-machine interface (HMI).

 

Sketch

 

Main technical

 

Monorail Overhead Crane

1. Simple structure

The design of single-girder bridge crane is relatively simple, with a single main beam structure, which reduces the complexity of manufacturing and installation. This structure is not only easy to produce, but also makes the maintenance and overhaul of the equipment more convenient, reducing downtime and thus improving work efficiency.

2. Small space occupation

Due to its compact design, the single-girder bridge crane requires relatively little space when working. This makes it very suitable for use in environments with limited space, such as small workshops, warehouses or other small areas. Compared with other types of cranes, single-girder bridge cranes can effectively utilize limited space and maximize work efficiency.

3. High flexibility

Single-girder bridge cranes are usually equipped with a variety of control methods, including manual control, remote control and automatic control. This allows operators to flexibly choose the control method according to specific needs, which improves the flexibility of the operation. In addition, the operating speed and stroke of the crane can be adjusted to meet different operation requirements.

4. Large lifting height

Single-girder bridge cranes have a large lifting height, which enables it to adapt to various height operation requirements. In some occasions where high-altitude operations are required, single-girder bridge cranes can effectively improve work efficiency and ensure the safe lifting of goods.

5. Convenient operation

The operation of this type of crane is relatively simple, and operators can master it after basic training. The diverse control methods enable operators of different levels to operate safely and efficiently. In addition, cranes are usually equipped with safety devices to ensure the safety of personnel and goods during operation.

6. Wide range of applications

Single-girder bridge cranes can be applied to multiple industrial fields, including manufacturing, logistics, construction, metallurgy, etc. It is suitable for various types of cargo handling, whether it is heavy machinery or light parts, and can be effectively hoisted and transported.

 

Monorail Overhead Crane

1. Manufacturing

In the manufacturing industry, single-girder bridge cranes are often used to move and assemble heavy machinery, parts and raw materials. Their flexible operation and large lifting height make the production process in the workshop more efficient.

2. Logistics and warehousing

In logistics centers and storage facilities, single-girder bridge cranes are used for loading and unloading, stacking and transportation. It can quickly and efficiently complete the handling of goods and improve the efficiency of warehouse operations.

3. Construction engineering

On construction sites, single-girder bridge cranes are used to lift construction materials, equipment and tools, especially in high-rise building construction, which can effectively improve construction efficiency and safety.

4. Metallurgical industry

In the metallurgical industry, single-girder bridge cranes are used to move heavy materials such as steel and aluminum. Their high load capacity and durability make them suitable for operation in harsh environments.

5. Shipbuilding industry

In shipyards, single-girder bridge cranes are used to lift hull parts and equipment. Their precise control and high lifting capacity facilitate the assembly and repair of ships.

6. Power Industry

In power facilities, single-girder bridge cranes are used to transport heavy equipment such as transformers and generators to ensure the smooth progress of power construction and maintenance work.

7. Waste Disposal

In the waste treatment and recycling industry, single-girder bridge cranes are used to transport and sort waste to provide support for the reuse of resources.

 

Monorail Overhead Crane

1. Design stage: Determine customer needs and understand the use environment, load capacity and technical specifications of the crane. Engineers make preliminary designs based on the needs, including structural drawings, material selection and performance parameters.

2. Material preparation: Purchase the required steel, motors, control systems and other accessories according to the design plan. Perform quality inspection on the purchased materials to ensure that they meet the design requirements.

3. Processing stage: Cut the steel according to the design drawings to make the required beams, supports and other structural parts. Weld the cut parts to form the main beam, bridge and other structural parts to ensure that the welding quality meets the standards. Machining the welded parts to ensure accurate size and fit.

4. Assembly: Preliminary assembly of various components (main beam, running wheels, hooks, control systems, etc.) to check the fit and accuracy of each part. Install motors, control systems and safety devices to ensure the normal operation of the electrical system.

5. Testing stage: Perform static load tests to check the stability and safety of the crane under no load and full load conditions. Perform dynamic load tests to check the operating performance, speed, braking and safety device functions of the crane. Debug according to the test results to ensure that all performance indicators meet the design requirements.

6. Spraying and anti-corrosion treatment: Clean, sandblast and rust-proof the assembled crane. Spray anti-corrosion paint on the surface of the crane to ensure its durability and aesthetics.

7. Packaging and transportation: Pack the completed crane reasonably to prevent damage during transportation. Arrange transportation according to customer needs and deliver the crane to the customer's designated location.

8. Installation and commissioning: Install and commission the crane at the customer's site to ensure its normal operation. Train operators and explain the operation and maintenance precautions of the equipment.

 

 

 

 

 

 

Monorail Overhead Crane

Material Inspection

Quality Inspection: Strict quality inspection is carried out on the purchased raw materials to ensure that they meet the design requirements and national standards.

Material Storage: Qualified materials are stored according to classification to prevent corrosion or damage.

Cutting and Forming

Steel Cutting: Use plasma cutting, laser cutting or flame cutting and other technologies to cut the steel according to the size of the design drawing.

Forming Processing: Form the steel plate through bending, rolling, welding and other processes to manufacture the main beam, end beam and other structural parts.

Welding

Component Welding: The cut and formed steel parts are welded into the main structures such as the main beam, end beam and trolley. The welding process needs to be strictly controlled to ensure the structural strength and welding quality.

Weld Inspection: Use non-destructive testing technology (such as ultrasonic testing, radiographic testing) to inspect the welds to ensure that there are no cracks or other defects.

Machining

Precision Machining: Precision machining is performed on the key components of the crane, such as wheel sets, bearing seats, pulleys, etc., to ensure their dimensional accuracy and surface quality.

Assembly of the whole machine

General assembly: On the basis of pre-assembly, the overall assembly of the crane is carried out, including the final installation of the main beam, end beam, lifting mechanism, walking mechanism, etc.

Commissioning and testing

Under dynamic conditions, the operating performance of the crane is tested, including the testing of lifting, walking, steering and other functions. The overall size of the assembled bridge crane is checked to ensure that all dimensions meet the design requirements.

Spraying and anti-corrosion treatment

Surface treatment Rust removal: Rust removal on the surface of the crane, common methods include sandblasting, pickling, etc. Primer spraying: Spray anti-corrosion primer on the treated surface to prevent metal oxidation and corrosion. Topcoat spraying Color spraying: Spray topcoat according to customer requirements or industry standards to give the crane a protective and decorative effect. Marking: After spraying, mark the crane's identification information in accordance with the specifications, such as model, rated load, etc.

Factory and installation

Packaging and transportation

Packaging protection: Protectively package the key components of the crane to prevent damage during transportation. Transportation arrangement: According to the equipment size and transportation conditions, select a suitable transportation method to transport the crane to the customer's site.

Acceptance and delivery

Customer acceptance

On-site acceptance: The customer conducts on-site acceptance of the crane according to the contract requirements and technical specifications to check the performance and quality of the equipment.

Problem rectification: If any problems are found, the manufacturer needs to rectify them in time to ensure that the equipment fully meets the customer's requirements. Delivery and use Operation training: The manufacturer usually trains the customer's operators to ensure that they can operate the crane correctly and safely.

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