As an indispensable heavy equipment in modern industry, the technical specifications and performance of electric double-beam bridge cranes are directly related to production efficiency and safety standards. This manual aims to comprehensively analyze the technical details of electric double-beam bridge cranes, from product overview to mechanical structure design, to power system and drive device, safety protection device, operation and control, installation and commissioning, as well as maintenance and maintenance. Through meticulous technical explanation, readers will be able to fully understand the construction principle, performance characteristics and application advantages of the equipment, provide strong support for selection, use and maintenance, and ensure that the equipment can operate stably in various industrial scenarios and maximize its efficiency.

Product Overview

Introduction to Electric Double-beam Bridge Crane

Electric double-beam bridge crane is a heavy-duty lifting equipment widely used in various industrial plants, mainly used for lifting, handling and stacking of materials. The equipment adopts a double-beam structure with high load-bearing capacity and stability, which can meet the operation requirements under various complex working conditions. Through the electric drive system, the crane can realize the lifting, trolley operation and trolley operation, which is easy to operate, flexible and reliable.

The lifting mechanism of the electric double-beam bridge crane adopts electric drive, and the motor drives the drum or sprocket to realize the lifting and lowering of materials. The trolley running mechanism enables the trolley to move on the track to realize the horizontal transportation of materials. The trolley running mechanism enables the whole machine to move on the main beam to realize the vertical transportation of materials. The design of these mechanisms makes the electric double-beam bridge crane more convenient, flexible and reliable during operation.

Application scenarios and fields

The electric double-beam bridge crane is suitable for many fields such as metallurgy, machinery manufacturing, energy, chemical industry, logistics, etc. In steel smelting plants, electric double-beam bridge cranes can be used to lift heavy objects such as billets and steel materials to achieve safe operation in high temperature and high dust environments. In mechanical manufacturing workshops, the equipment can be used for material handling on assembly lines to improve production efficiency. In the energy industry, electric double-beam bridge cranes can be used for the installation and maintenance of power station equipment to ensure the safety and stable operation of the equipment. In chemical companies, the equipment can be used to transport hazardous chemicals to achieve safe and efficient material transportation. In logistics and warehousing centers, electric double-beam bridge cranes can be used for loading and unloading and stacking of goods to improve warehouse operation efficiency.

Product Advantages and Features

The electric double-beam bridge crane is known for its high strength, high efficiency and high safety. Its double-beam structure provides a strong load-bearing capacity, ensuring stability and safety during operation. At the same time, the use of advanced electrical control systems enables precise operation control and improves operating efficiency. In addition, the equipment is also equipped with a complete safety protection device, which effectively avoids the occurrence of various safety accidents.

The double-beam structure design of the electric double-beam bridge crane gives it a strong load-bearing capacity and can meet the needs of various heavy lifting and handling. This structure also enhances the stability of the equipment, reduces the risk of shaking and tipping, and ensures safety and reliability during operation.

The equipment adopts an advanced electrical control system to achieve precise operation control, allowing operators to easily control the lifting, running and stopping of the equipment. This improves operating efficiency and reduces the occurrence of misoperation and safety accidents.

The electric double-beam bridge crane is also equipped with complete safety protection devices, such as limit switches, overload protection, anti-fall devices, etc., which effectively avoid the occurrence of various safety accidents. These devices can promptly detect and deal with potential safety hazards to ensure the normal operation of the equipment and the safety of personnel.

Specifications and Models

Electric double-beam bridge cranes can provide a variety of specifications and models according to user needs. Different models of equipment have differences in load-bearing capacity, span, lifting height, etc. to meet the needs of different operating scenarios. Users can choose the appropriate equipment model according to the actual operating environment and material characteristics. For example, for occasions where heavy objects need to be hoisted, a model with a larger load-bearing capacity can be selected; for occasions where operations need to be carried out in a large space, a model with a larger span can be selected; for occasions where high objects need to be frequently hoisted, a model with a higher lifting height can be selected. In addition, users should also consider factors such as the operating performance and maintenance requirements of the equipment for comprehensive selection.

Mechanical structure and design

Main beam and end beam structure

The main beam structure of the electric double-beam bridge crane is cleverly designed with a box-type section. This design has high strength and rigidity and can withstand large bending moments and torques. The strength and rigidity of the main beam are crucial to ensure the safe operation of the crane, and the end beam, as a component connected to both ends of the main beam, together with the main beam forms a stable frame structure. The main beam and the end beam are connected by high-strength bolts, and this connection method can ensure the integrity and stability of the entire structure.

Hoisting mechanism design

As one of the core components of electric double-beam bridge crane, the design of the hoisting mechanism is crucial. The hoisting mechanism is mainly composed of motor, reducer, drum, wire rope and other components. The motor drives the drum to rotate through the reducer, so as to realize the retraction and release of the wire rope to achieve the purpose of lifting or lowering materials. This design makes the hoisting mechanism have higher transmission efficiency and carrying capacity, thus ensuring the normal operation of the crane.

Trolley running mechanism

The trolley running mechanism is an important part of the electric double-beam bridge crane, which is responsible for horizontal movement along the track on the main beam. This mechanism is mainly composed of motor, reducer, wheels and other components. The motor drives the wheels to roll through the reducer to realize the operation of the trolley. The trolley running mechanism is compact in design, runs smoothly, has high positioning accuracy, and can meet various operation requirements.

Trolley running mechanism

The trolley running mechanism is the key part of the crane to achieve overall movement. It is responsible for moving longitudinally on the factory track. Its structure is similar to that of the trolley running mechanism, and it is also composed of motor, reducer, wheels and other components. The trolley operating mechanism is reasonably designed and can adapt to the operating requirements under various complex working conditions, ensuring the normal operation and efficient work of the crane.

Power system and drive device

Motor selection and configuration

The power system of the electric double-beam bridge crane is the core component that drives the crane to perform various operations. According to the operation requirements, different types of motors can be selected, such as AC motors, DC motors or variable frequency motors. AC motors have higher power factor and efficiency and are suitable for large cranes; DC motors have better speed regulation performance and are suitable for occasions where precise speed control is required; variable frequency motors have a wider speed regulation range and higher efficiency and are suitable for various lifting operations. The motor configuration is reasonable and can meet the power and torque required for the crane’s lifting, trolley operation and trolley operation.

Reducer and transmission device

The reducer is an important component in the transmission system of the electric double-beam bridge crane, which is used to reduce the speed of the motor and increase the torque. The reducer adopts advanced gear technology and has high transmission efficiency and reliability. The transmission device is responsible for transmitting the power of the motor to each actuator. The transmission device uses couplings, bearings and other components to ensure the stability and reliability of power transmission. The reducer and transmission device are well designed and can meet the needs of various lifting operations.

Braking system description

The braking system is an important guarantee for the safety of electric double-beam bridge cranes. The equipment uses braking devices such as electromagnetic brakes or hydraulic brakes, which can quickly brake the crane in an emergency to avoid accidents. Electromagnetic brakes have the advantages of high sensitivity and good braking effect; hydraulic brakes have the advantages of smooth braking and low noise. The braking system is reasonably designed, the braking performance is stable and reliable, and can ensure the safe operation of the crane.

Power transmission and control method

The power transmission of the electric double-beam bridge crane is mainly realized through components such as reducers, couplings, and bearings. These components play a key role in the power transmission process, ensuring the stability and reliability of power transmission. At the same time, in order to realize the automatic control of the crane, the equipment adopts an advanced electrical control system. The system realizes the automatic control of the crane through control devices such as PLC and frequency converter. Through PLC programming control, the automatic operation and monitoring of the crane can be realized; through frequency converter speed control, the smooth operation and precise position control of the crane can be realized. The power transmission and control method are reasonably designed to ensure the stable and efficient operation of the crane.

The role of safety protection device in electric double-beam bridge crane

Limit protection device

The limit protection device is one of the important safety accessories of electric double-beam bridge crane. The device limits the operating range of the crane by installing limit switches and other components to prevent the crane from exceeding the track or colliding with other objects. During operation, when the crane approaches the end of the track or is about to collide with surrounding objects, the limit switch will be triggered, thereby cutting off the power supply of the relevant mechanism or issuing an alarm signal to prevent the crane from further movement and prevent possible derailment or collision accidents. The limit protection device is reasonably designed and has high sensitivity and reliability. It is usually connected to the control system, which can accurately judge and take measures in a short time to ensure the safe operation of the crane.

Anti-derail protection device

The anti-derail protection device is used to prevent the crane from derailing due to uneven tracks or operational errors during operation. The device ensures that the crane always stays on the track by installing guide wheels, limit blocks and other components. The anti-derail protection device is exquisitely designed and effectively improves the safety of the crane. The guide wheel can run along the track to maintain the stability of the crane; while the limit block can limit the movement range of the crane when necessary to avoid derailment accidents.

Overload protection device

The overload protection device is an important part of the electric double-beam bridge crane, which is used to monitor the lifting load of the crane. The device monitors the load of the crane in real time by installing sensors and other components. When the load exceeds the rated value, it can automatically cut off the power supply or send out an alarm signal to avoid damage or accidents caused by overloading. The overload protection device is reasonably designed with high accuracy and reliability. The sensor can accurately measure the weight of the load and compare it with the rated value; when the load exceeds the rated value, the sensor will trigger the alarm system or cut off the power supply to prevent overloading accidents.

Other safety accessories

In addition to the above-mentioned safety protection devices, the electric double-beam bridge crane is also equipped with a variety of other safety accessories, such as emergency stop buttons, sound and light alarm devices, anemometers, etc. These safety accessories can respond quickly in an emergency to ensure the safe operation of the crane. The emergency stop button is a device that quickly cuts off the power supply or starts the emergency stop procedure in an emergency. In the event of a dangerous situation, the operator can quickly press a button to stop the operation of the equipment to avoid accidents. The sound and light alarm device is an alarm device that emits sound and light when an abnormal situation occurs. It can remind operators and other relevant personnel to pay attention to safety and take timely measures to deal with abnormal situations through the warning effect of sound and light. An anemometer is an instrument for measuring wind speed, which can help operators understand the wind speed conditions on site. When the wind is strong, the anemometer can be used to adjust the operating status of the crane in time to prevent accidents caused by excessive wind. The existence of these safety accessories greatly improves the safety and reliability of the electric double-beam bridge crane and provides more protection for operators.

Operation and control

Operation method description

The operation methods of the electric double-beam bridge crane are rich and varied to meet different operation scenarios and needs. The main operation methods include manual operation and automatic operation. In the manual operation mode, the operator directly drives the crane’s lifting, lowering, trolley operation and trolley operation through the control handle or button. This operation method is flexible and intuitive, and is suitable for operations with high precision requirements. The automatic operation mode is realized through advanced automation control devices such as PLC (programmable logic controller). After the operator sets the parameters, the PLC controls the various actions of the crane according to the preset program to achieve automatic control and operation. This operation method improves work efficiency and safety and reduces the burden on operators.

Control system design

The control system is one of the core components of the electric double-beam bridge crane, responsible for realizing the automatic control and safety protection of the crane. During the design process, advanced electrical control technology was used to ensure the stability and reliability of the system. The system can monitor the operating status of the crane in real time, including the position, speed, load condition of the hook, etc., and automatically adjust and control according to the preset parameters. Through control devices such as PLC, the refined management and efficient control of the crane can be achieved.

Human-machine interface and operation panel

As an important interface for operators to interact with the crane, the design of the human-machine interface and operation panel directly affects the operating efficiency and safety. The human-machine interface is intuitive and easy to understand, and can clearly display the operating status, fault information and other key data of the crane. Through the graphical interface and concise text description, the operator can quickly understand and grasp the relevant information. The operation panel is reasonably arranged and divided according to function and frequency of use, which is convenient for operators to perform various operations and controls. At the same time, the operator’s habits and needs are taken into consideration, which improves the convenience and safety of operation.

Fault diagnosis and alarm system

Fault diagnosis and alarm system is one of the important safety guarantees for electric double-beam bridge cranes. The system monitors the operating status of the crane in real time, including key parameters such as motor temperature, lubrication condition, hook position, etc. When a fault or abnormal situation occurs, the system can automatically send out an alarm signal and display the fault information, so that the operator can take timely measures to deal with it. At the same time, the system also has high sensitivity and accuracy, which can timely detect and warn potential safety hazards, and effectively ensure the safety and reliability of operations.

Installation and commissioning

Pre-installation preparation and requirements

Before installing the electric double-beam bridge crane, comprehensive preparations need to be made to ensure the smooth progress of the installation process. First, a detailed survey and measurement of the installation site is required to understand the site’s environment, size, load-bearing conditions, etc., in order to determine the installation location and track direction of the crane. This step is crucial because the crane’s components such as the track and outriggers need to match the site environment to ensure the correctness and safety of the installation. It is also necessary to carefully check the various components of the crane, including the main beam, end beam, lifting mechanism, running mechanism, etc., to ensure that they are intact and meet the design requirements. At the same time, the required installation tools and materials, such as cranes, wrenches, screwdrivers, lubricating oil, etc., need to be prepared. Finally, it is also necessary to develop a detailed installation plan and safety measures to ensure the safety and smooth progress of the installation process.

Installation steps and processes

The installation of an electric double-beam bridge crane is a complex and delicate process that needs to be strictly followed in accordance with certain steps and processes. First, the track needs to be fixed to the site ground according to the design requirements to ensure that the flatness and straightness of the track meet the requirements. Next, connect the outriggers to the track and fix the base of the outriggers to ensure the stability and verticality of the outriggers. Then, assemble the main beam and end beam according to the design requirements and fix them on the outriggers. During the assembly process, it is necessary to ensure that the connection of each component is firm and reliable to meet the design requirements. Then, install the lifting mechanism and trolley running mechanism on the main beam and end beam according to the design requirements. During the installation process, it is necessary to ensure that the connection of each component is firm and reliable to meet the design requirements. At the same time, it is also necessary to inspect and test key parts, such as the insulation performance of the electrical system and the operation of the mechanical system, to ensure that the overall performance and safety of the crane meet the requirements.

Debugging and testing methods

After the crane is installed, debugging and testing work is required. The debugging work mainly includes the debugging of the electrical system and the debugging of the mechanical system. The debugging of the electrical system requires checking the connection and insulation performance of each electrical component; the debugging of the mechanical system requires checking the operation and lubrication of each mechanical component. The testing work requires testing the lifting capacity, running speed, braking performance, etc. of the crane to ensure that the various performance indicators of the crane meet the design requirements. Problems found during the commissioning process need to be handled and resolved in a timely manner to ensure the normal operation and safe use of the crane.

Acceptance standards and processes

After the commissioning and testing of the crane is completed, acceptance work needs to be carried out. The acceptance standards mainly include the performance indicators of the crane, the effectiveness of the safety protection device, the reliability of the operation and control system, etc. The acceptance process includes on-site inspection, performance testing, document review and other links. The acceptance report form needs to be carefully filled out and the relevant responsible person shall sign and confirm the acceptance results. Only when the crane meets the acceptance standards and is approved by the relevant departments can it be officially put into use. Problems found during the acceptance process need to be handled and resolved in a timely manner to avoid affecting the normal use and safety of the crane

Maintenance and care

Daily maintenance requirements

Daily maintenance is a key link in maintaining the normal operation of the electric double-beam bridge crane, and its importance cannot be ignored. First, the operator needs to regularly clean the appearance of the crane thoroughly, including cleaning dust, oil and debris, etc., to ensure that the appearance of the equipment is neat and tidy, so as to facilitate the timely detection of potential problems and abnormal conditions. Secondly, according to the frequency of use and environmental conditions of the equipment, each lubrication point is regularly lubricated, including key components such as bearings and gears, to ensure the flexibility and stability of the operation of mechanical parts and effectively reduce wear and friction noise.

Regular inspection and maintenance plan

In addition to daily maintenance, in order to ensure the long-term stable operation of the electric double-beam bridge crane, a regular inspection and maintenance plan needs to be formulated. When formulating a regular inspection and maintenance plan, it is necessary to comprehensively consider factors such as the frequency of use of the crane, the working environment, and the condition of the equipment, and clarify the time interval, specific content, method, and person in charge of the inspection and maintenance. The content of the regular inspection and maintenance plan includes comprehensive inspection and maintenance of each component, such as: inspecting the bridge structure to see if there are problems such as deformation, corrosion, and cracks; inspecting the electrical system to see if there are aging lines, poor contact, etc.; functional inspection and adjustment of each mechanism to see if there are problems such as inflexible operation and excessive noise. Through the implementation of the regular inspection and maintenance plan, potential faults can be discovered and handled in time, extending the service life of the equipment.

Common fault troubleshooting and handling

Electric double-beam bridge cranes may encounter various faults during use, and operators should be familiar with the troubleshooting and handling methods of common faults. In the process of troubleshooting, the principle of easy first and difficult later, and outside first and inside later should be followed. First check the appearance and whether the parts are loose or damaged, and then check the internal mechanism and electrical system. During the inspection, appropriate tools and equipment should be used for detection and analysis to find out the cause of the fault. After finding the cause of the fault, appropriate measures should be taken to deal with it. When dealing with faults, safety operating procedures and precautions should be followed to ensure the safe and smooth progress of the handling process.

Parts Replacement and Upgrade Guide

With the increase in usage time, some parts of the electric double-beam bridge crane may need to be replaced or upgraded due to wear, aging, etc. Operators need to be familiar with the replacement and upgrade methods of parts to ensure that the replaced or upgraded parts meet the design requirements and can match the original parts well. When replacing or upgrading parts, it is necessary to follow the operating procedures and safety requirements, and strictly follow the operating procedures for replacement or upgrading operations. At the same time, ensure that the correct tools and equipment are used to avoid damage to equipment and personnel. In addition, safety matters need to be paid attention to, such as: pay attention to prevent accidents during replacement or upgrading; pay attention to personal safety protection during operation; after the replacement or upgrade is completed, necessary tests and inspections should be carried out to ensure the safety and stability of the equipment.

Technical parameters and performance indicators

Basic technical parameters overview

As an indispensable and important equipment in modern industrial production, the performance of electric double-beam bridge cranes is directly related to production efficiency, safe production and environmental protection. Basic technical parameters are one of the important indicators for evaluating and measuring the performance of electric double-beam bridge cranes. Carrying capacity, span, lifting height and working level are the four core elements of the performance evaluation system of electric double-beam bridge cranes.

Carrying capacity, that is, rated lifting weight, refers to the maximum weight of materials that the crane can lift safely and effectively. This parameter directly determines the load that the crane can carry during operation, and has a decisive influence on production efficiency and operation safety. The span refers to the distance between the center lines of the main beams of the bridge crane, which reflects the width of the working area that the crane can cover. The selection of this parameter needs to be determined based on the limitations and requirements of the actual working space to ensure that the crane can operate flexibly and freely during the operation. Lifting height refers to the maximum height that the crane can lift materials to in the vertical direction. This parameter is particularly important for those operating scenarios that need to handle materials of different heights, such as warehouses and workshops. Through reasonable lifting height design, the operating efficiency can be maximized and the operating difficulties caused by the material position being too high or too low can be avoided. The working level reflects factors such as the frequency of the crane’s work and the use environment. Different working levels correspond to different design standards and service life, which is of great significance for ensuring the long-term stable operation and low failure rate of the crane.

Lifting capacity and working level

Lifting capacity is one of the main performance indicators of electric double-beam bridge cranes. It determines the maximum weight of materials that the crane can lift safely and stably. Different types of cranes have different lifting capacities, and users can choose the appropriate equipment according to actual needs. The working level reflects factors such as the frequency of the crane’s work and the use environment, which determines the design life and reliability of the crane. In the process of selecting lifting capacity and working level, users need to fully consider factors such as actual production needs, work intensity, and working environment to ensure that the selected equipment can meet production requirements and have sufficient safety and stability.

Operating speed and acceleration

Operating speed and acceleration are important indicators for evaluating the dynamic performance of electric double-beam bridge cranes. The operating speed determines the speed at which the crane moves in the horizontal and vertical directions, which affects the operating efficiency. Acceleration determines the acceleration of the crane during starting and braking, which affects the stability of the crane and the comfort of the operator. In order to improve operating efficiency and operating comfort, the operating speed and acceleration of the electric double-beam bridge crane are reasonably designed to meet the operating requirements under various complex working conditions. In actual applications, users need to select appropriate equipment according to actual needs and working scenarios to ensure efficient, safe and comfortable operations.

Other key performance indicators

In addition to the above technical parameters and performance indicators, the electric double-beam bridge crane also has other key performance indicators, such as noise level, vibration, energy consumption, etc. Noise level and vibration reflect the stability of the crane’s operation and the degree of impact on the surrounding environment. Energy consumption reflects the energy efficiency level and use cost of the crane. These key performance indicators are of great significance for evaluating the comprehensive performance of the crane and selecting appropriate equipment. When selecting equipment, users need to fully consider actual needs and working scenarios to ensure that the selected equipment can meet production requirements and have sufficient safety and stability. At the same time, users also need to pay attention to factors such as energy consumption and maintenance costs of equipment to achieve long-term economic and environmental benefits.

As a high-strength, high-efficiency and high-safety equipment, electric double-girder bridge cranes have been widely used in many fields. Through a comprehensive introduction to product overview, mechanical structure and design, power system and drive device, safety protection device, operation and control, installation and commissioning, maintenance and maintenance, as well as technical parameters and performance indicators, we can have a deeper understanding of the performance and characteristics of this equipment. When selecting and using electric double-girder bridge cranes, we need to make comprehensive considerations based on actual needs and working environment factors to ensure the stability and safety of the equipment and improve operating efficiency and use benefits. At the same time, users also need to pay attention to the maintenance and maintenance of the equipment to ensure the long-term stable operation and service life of the equipment.

Electric double beam bridge crane technical parameter comparison table

Technical parameters	Describe	Example values/ranges
Carrying capacity	Rated lifting weight, that is, the maximum weight of the crane for safe lifting	_ kg
Span	Distance between the center line of the main beam of the bridge crane	_ m
Lifting height	The maximum height that the crane can lift materials in the vertical direction to reach	_ m
Work level	Reflects the frequency of work and the environment in which the crane is used	A1-A8（Example Level）
Running speed	Crane travel speed in the horizontal and vertical directions	_ m/min
Acceleration	The acceleration of the crane during starting and braking	_ m/s²
Noise level	Reflects the smooth operation of the crane and its impact on the surrounding environment	≤_ dB(A)
Vibration situation	Reflects the stability of crane operation	_ mm/s²（Peak value）
Energy consumption	Reflects the energy efficiency level and operating cost of the crane	_ kWh/h

Comparison table of performance indicators of different types of electric double-beam bridge cranes

Model	Carrying capacity	Span	Lifting height	Work level	Running speed	Acceleration
Type A	High	Wide	High	A5	Fast	Medium
Type B	Medium	Medium	Medium	A3	Medium	Slow
Type C	Low	Narrow	Low	A1	Slow	Fast
Type D	High	Wide	Medium	A7	Fast	Fast
Type E	Medium	Medium	High	A4	Medium	Medium