Double girder overhead cranes are designed to handle larger capacities because they are robust and can be customized to your needs and application conditions.

Double girder overhead crane with crane hook, grab bucket, magnetic force, pliers, and other lower hook devices, suitable for use in machinery manufacturing, auxiliary workshops of metallurgical plants, storage, warehouses, power stations, etc.

Double girder overhead cranes or double girder overhead cranes are a lifting solution that can handle medium to heavy loads from 5 tons to 550 tons. Generally, double girder overhead cranes are recommended for handling weights greater than 10 tons.

We are the most adaptable manufacturer of double girder cranes, offering a wide range of models to meet every lifting need. All of our double girder overhead cranes are built to order, which means they can be customized to any size and load capacity.

Lifting Capacity5 to 550 tons
Lifting Height8 to 32 m
Span 7.5 to 28.5 m
Lifting speed0.2-10.7m/min
Trolley Running Speed2.4-33m/min
Crane Running Speed4.2-68m/min
Crane Control OptionsRadio Controls, cab
Hoist Powerelectrical
Hoist Running Powerelectrical
Crane Running Powerelectrical
Working DutyA3, A4, A5, A6, A7

Double Girder Overhead Cranes can be equipped with three possible hoists

CD&MD Wire Rope Hoist

When installed on a double girder overhead crane, the WeiHuaCrane CD&MD wire rope hoist can give you a lifting capacity of 5 to 64 tons.

CD wire rope hoists offer you a choice of speed.
MD wire rope hoists offer you two-speed options.
CD&MD wire rope hoists are easy to install and maintain, easy to operate, and cost-effective.

double girder overhead crane using CD&MD wire rope hoist, model LH, also known as LH overhead crane.

CDMD Type Hoist for Double Girder

LH Double Girder Overhead Cranes

LH double girder overhead crane is an overhead crane with an electric hoist (CD and MD) as the lifting mechanism, with a lifting capacity of 5 tons to 64 tons, and is used for general material handling and lifting. The electric hoist overhead working class is A3 to A5.

LH Double Girder Overhead Cranes

NR Wire Rope Hoist

When installed on a double girder overhead crane, the WeiHuaCrane NR wire rope hoist gives you a lifting capacity of 5 to 80 tons.

NR wire rope hoist adopts a C-shaped layout, which has higher space utilization and simple maintenance.

double girder overhead crane using NR wire rope hoist, model QDX, also known as QDX overhead crane.

New Type Hoist for Double Girder

QDX Double Girder Overhead Cranes

QDX double girder overhead crane is the latest version of overhead crane, which is designed with FEM standards and developed on the basis of traditional cranes. Therefore, QDX double girder overhead crane has unparalleled performance, compact structure, light weight, safety, and reliability, It has high execution efficiency and is widely used in all walks of life.

Due to the design advantages, the QDX double-girder overhead crane can help you reduce the initial investment in plant construction, improve productivity, reduce routine maintenance workload, reduce energy consumption, and obtain a higher return on investment.

Overhead Crane

Winch Trolley

When installed on a double girder overhead crane, the WeiHuaCrane Winch Trolley gives you a lifting capacity of 5 to 550 tons.

double girder overhead crane using NR wire rope hoist, model QD, also known as QD overhead crane.

Commonly used in high-capacity cranes for good loading conditions.

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QD Double Girder Overhead Cranes

QD Double Girder overhead cranes can lift loads ranging from 5 tons to 550 tons. They are widely used in the loading and moving of normal weights in fixed cross spaces, and can also be used with various special hoists for special operations.

Double Girder Overhead Crane

Comparison of three double-girder overhead cranes

Product Name


Lifting Capacity


Design


Design the details


white 1
Appearance

Working Class


Lifting Height


Hoist


white 1
Hoist Image

Lifting Speed


Trolley Travelling Speed


Crane Travelling Speed


Electrics


Maintenance


Noise


Total weight


LH Crane


5 to 64 tons


  • Integrated design

motor, reducer, electrics Integrated, Hard to maintain



  • A3, A4, A5

  • 4.05 meter

CD&MD hoist is the supporting equipment of LD overhead crane.



  • 4 m/min
    (single speed)

  • 20 m/min
    (single speed)

  • 20m/min
    (single speed)

CHNT (origin from China)


Gearbox and wire rope need to add oil every year. Will need to stop production for maintenance.


  • Big noise

  • 7.14 tons

Most Popular

QDX Crane


5 to 80 tons


  • Modular design

motor, reducer, electrics separated, easy to maintain



  • A5, A6

  • 4.15 meter

NR hoists are the supporting equipment for QDX overhead cranes.



  • 0.5 to 5 m/min
    (inverter control)

  • 2 to 20m/min
    (inverter control)

  • 2 to 20m/min
    (inverter control)

Schneider (France)


Maintenance-free, no need to add oil 3 to 5 years


  • Little noise

  • 6.5 tons

QD Crane


5 to 550 tons


  • Integrated design

motor, reducer, electrics Integrated, Hard to maintain



  • A4, A5, A6, A7

  • 4.00 meter

Winch Trolley is the supporting equipment of QD overhead crane.



  • 4 m/min
    (single speed)

  • 20 m/min
    (single speed)

  • 20m/min
    (single speed)

Schneider (France)


Gearbox and wire rope need to add oil every year. Will need to stop production for maintenance.


  • Big noise

  • 10.86 tons

Double Girder Overhead Cranes Serve

WeiHuaCrane can provide one-stop solutions for Double Girder Overhead Cranes, including design, production, installation, training, maintenance, repair, etc.
Also offers OEM/ODM service for Double Girder Overhead Cranes.
Products can be customized according to your individual requirements.
Please tell us your ideas or provide your design files and our R&D team will do the rest.

Introduction

A double girder overhead crane is an overhead crane with two girders (bridges) extending between the runways to accommodate the width between the cranes. End trucks are located at the end of each girder and move the girder and crane along the length of the runway as a whole. Typically, trolleys and hoists run on top of the beam.

Double girder overhead cranes have several advantages over single girder overhead cranes:
Double girder overhead cranes increase the hook height (the distance above the ground that the crane can lift) because the trolley is placed on top of the two girders, while single girder overhead cranes are usually designed with the crane suspended at the bottom flange of the crane girder.

Double-girder overhead cranes are high-strength cranes with a lifting capacity of 5 to 550 tons, which are used for lifting and handling operations in workshops, garages, maintenance stations, assembly plants, etc.

What can we offer you?

Lifting Capacity: 5 ton; 10 ton; 16/3.2 ton; 20/5 ton; 32/5 ton; 50/10 ton; 75/20 ton; 100/20 ton; 125/32 ton; 150/30 ton; 160/32 ton; 200/50 ton; 250/50 ton; 300/75 ton; 350/80 ton; 400/80 ton; 450/100 ton; 500/100 ton; 550/100 ton;

Example: 16/3.2ton: Double hook

Working Duty:

A5(Used in working not so frequency, such as general machining and assembly workshop)

A6 (Used in much more frequent work, such as auxiliary hoisting in metallurgy and casting workshop)

A7 (Used in busy working and the hoisting of melted hot metal)

If you can’t meet your needs, you can contact us. We design and manufacture non-standard series products according to your needs.

The main purpose of the Double girder overhead crane?

Double Girder Overhead Crane is heavy-duty large material handling equipment running on rails.

Double Girder Overhead Crane cannot be used in special flammable, explosive, and corrosive environments (special material handling equipment, Explosion-proof Overhead Crane).

If you are in a special industry, please write down your industry when you leave a message, and our engineers will customize an overhead crane that meets your industry standards.

Introduction of LH Double Girder Overhead Crane

LH double girder overhead crane is an overhead crane with a CD&MD hoist as the lifting mechanism, with a lifting capacity of 5 tons to 63 tons, and is used for general material handling and lifting. LH cranes are rated A3 to A5.

Composition of LH Double Girder Overhead Crane

LH double-girder overhead crane is mainly composed of a bridge frame, trolley, crane traveling mechanism, electrical control system, and other crane components.

Application of LH Double Girder Overhead Crane

As a common material handling equipment, the LH double-girder overhead crane is widely used in machining workshops, warehouses, yards, workshops, and other places. It can also be used as a substitute for double-girder overhead cranes in the textile industry, food industry, etc. production workshops.

Advantages of LH Double Girder Overhead Cranes

Compact structure, good rigidity,
Easy to operate, low noise,
low building height headroom,
Light weight, small wheel pressure,
Safe and reliable,
Charming looks and more.

Features of LH Double Girder Overhead Crane

The double girder structure makes the crane bridge have sufficient strength, rigidity and stability.
The middle rail box girder design fully meets the strength, stiffness, and stability requirements.
The simple structure of the end beam can be easily installed with the main beam with high-strength bolts.
The hoisting mechanism adopts CD or MD high-quality wire rope electric hoist.
A soft start motor with a low current is used with ground control.
The dual-motor independent drive device is adopted to reduce the wear of the rail and reduce the possibility of the wheel climbing off the rail.
The motor is directly controlled by the contractor, which enables the motor to realize single-speed, double-speed, and forward-reverse control.
The frequency converter is used to change the frequency and voltage of the motor power supply to realize the function of speed regulation and control of the motor.
Multiple safety protection systems are adopted, including short-circuit protection, no-voltage protection, emergency power-off switch protection, overload limit protection, travel limit protection, zero-sum chain protection, grounding protection, etc.

Introduction of QDX Double Girder Overhead Crane

QDX double-girder overhead crane meets customers’ material handling needs, always focusing on quality and product innovation, to provide you with high-quality, safe, and reliable material handling equipment to achieve our goal of quickly lifting you and creating more customer value. The QDX double girder overhead crane is a successful innovation for us to achieve this.

QDX double girder overhead crane is the latest version of overhead crane, designed with FEM standards and developed on the basis of traditional cranes. Therefore, QDX double girder overhead crane has unparalleled performance, compact structure, light weight, safety, and reliability, It has high execution efficiency and is widely used in all walks of life.

NLH overhead crane

Due to the design advantages, the QDX double-girder overhead crane can help you reduce the initial investment in plant construction, increase productivity, reduce routine maintenance workload, reduce energy consumption, and obtain a higher return on investment.

QDX double girder overhead cranes have a lifting capacity of 5 to 80 tons and work grades of A5 and A6. The main parameters are as follows for your reference, which can be customized from QDX cranes.

nlh overhead crane 2

WeiHuaCrane has developed the QDX double-girder bridge crane with the design concept of reducing customers’ losses due to crane problems and downtime, and its main features are as follows:

  1. Advanced technology and reliable performance.

As a leading pioneer in the development of material handling equipment, we innovate advanced lifting equipment based on the industry’s advanced technology and valuable manufacturing experience. After numerous trials and improvements, new products will be continuously developed and launched, guaranteeing quality and safety. European double girder overhead cranes are designed to help customers increase productivity, reduce maintenance costs, extend working life and maximize return on investment.

  1. Compact and modular design, optimize your investment

The QDX double-girder overhead crane has the characteristics of compact structure, lightweight, low wheel pressure, and uniform load distribution, which can greatly reduce the construction cost and heating cost and make maintenance easier. Compared to the LH overhead crane, the size of the QDX double girder overhead crane is reduced by 10% to 15% depending on the load weight. The heavier the load, the smaller the allowable size of the QDX crane, the more savings, and the higher the return on investment.

nlh overhead crane 3
  1. Green ideas lead to innovation, saving space and energy

The compact crane structure maximizes the availability of the working space.

Crane components and crane durability save you from frequent maintenance.

Light dead weight and lower wheel pressure reduce energy consumption.

  1. High safety and reliability, easy maintenance.

The quality of QDX double-girder bridge cranes is guaranteed by advanced technology, advanced processing equipment, and strict quality control measures and inspections to ensure the high safety of the cranes. The design concept of maintenance-free and easy maintenance makes the material handling equipment easy to maintain and operate while having a competitive advantage.

  1. Custom configuration and wide selection

QDX double girder overhead cranes are available in custom configurations, with capacities ranging from 5 to 80 tons. Customizable tipping hoists, anti-sway devices, automatic positioning devices, winch maintenance monitoring devices, or remote diagnostic tools. We can also provide customers with personalized and professional solutions through our advanced technology and experience.

Introduction of QD Overhead Crane

As one of the most commonly used material handling equipment, QD overhead cranes are overhead cranes with hooks as lifting tools. QD overhead cranes have a lifting capacity of 5 to 550 tons and a working class of A4 to A7.

QD Bridge Crane Assembly

QD bridge crane is composed of a crane bridge, crane traveling mechanism, trolley, electrical equipment, crane hook, and so on.

Application of QD Bridge Crane

QD overhead cranes are widely used for loading and transporting normal weights in fixed cross spaces and various special cranes in special operations. However, it cannot be used in flammable, explosive, or corrosive environments.

Advantages of QD Overhead Crane

Compact structure, novel style, and beautiful appearance
Good availability and long service life
High volume and high working class
Flexible operation and wide application
High security and reliability
Competitive quality and price
hook
A hook is a material handling device, a tool used to lift and move loads. The hook can be divided into single, double, C-shaped, laminated, and so on.

The single hook is simple to manufacture and is widely used in cranes.

Double hooks are often used in high-capacity cranes to accommodate good loading conditions.

A laminate hook is a load hook assembled from multiple pieces or individual segments, contacted by rivets. The stacking hook is mainly used for large loads such as the transportation of molten liquid substances in the ladle.

Features

  1. Reasonable design, small size, Low headroom
  2.  Maximize lifting height, so as to play workshop’s efficacy
  3.  Light dead weight, low wheel loading.
  4.  Advanced technology, functional, energy Saving and efficient
  5.  Frequency control of motor speed, stable traveling

WeiHuaCrane Advantages

  1. More professional service: If you are not sure how to customize, our sales manager will help you choose the most suitable product for you;
  2. Best for you: professional engineers customize products according to your user environment;
  3. Better price: According to your user environment, etc., we will give you the most suitable product, save unnecessary functions, and help you save money;
  4. Customized lifting height: According to your needs, the lifting height can be customized for you, which can be extended, reduced, etc., which is most suitable for you;
  5. Customized function: wireless remote control can be installed, which is more convenient to use;
  6. Modify the power supply: you can modify the power supply (voltage, frequency, etc.) according to your environment;
  7. On-site installation: Worried about installation errors, we can on-site installation and commissioning;
  8. Guidance: We provide use videos and detailed maintenance manuals;
  9. Replacement of vulnerable parts: more vulnerable parts are provided so that your crane can be replaced in the first time when it is worn out;
  10. Parts are processed separately: after long-term use, if some parts are damaged, we will process these parts for you and send them to you;

Application Scenarios

steel industry
Process cranes for the steel industry combine intelligent lifting solutions with cutting-edge technology and require no routine maintenance. Our adaptable service plans can also improve your overall productivity.

Cranes for steel mills and steel mills

Tundish cranes, slab cranes, scrap cranes, ladle cranes, industrial cranes for billet and ingot handling, industrial cranes for coil handling, loading cranes from 5 to 74 tons, foundry cranes from 20 to 600 tons, load beam from cranes, etc.

Different lifting devices for the steel industry

As a professional industrial crane manufacturer, WeiHuaCrane provides the following steel handling equipment and tools for material handling in the steel industry, including:

Cranes c Hooks, jacks, coil tongs, and coil handling equipment and tools:
Ladle lifting hook
Sheet hoists and steel plate hoists, crane electromagnets, round electromagnets, load-carrying beams, permanent hoisting magnets for the handling of steel plates, sheets, slabs, coils, coils, pipes:
Grapples for scrap steel
Rubber and Plastics Manufacturing Industry
For material handling in the rubber and plastics industry, common industrial cranes include standard industrial overhead cranes, gantry cranes, and jib cranes, as well as crane types such as industrial chain hoists and wire rope hoists.

Shipbuilding
Shipyard and shipbuilding industry cranes can help you. Shipyard and shipbuilding industrial cranes are used for material handling in shipyards during shipbuilding.

Cement, glass, brick, concrete handling
Handling cement, glass, bricks, and concrete with industrial cranes. For material handling in the industry, commonly used industrial cranes include basic industrial overhead cranes, gantry cranes, and jib cranes, as well as industrial chain hoists, wire rope hoists, and other types of hoisting machinery.

Automobile industry
For material handling in the industry, the most commonly used industrial cranes are traditional industrial overhead cranes, gantry cranes, and jib cranes, as well as other types of cranes such as industrial chain hoists and wire rope hoists.

Biomass industry, slag, sludge, straw processing industry
Use biomass industrial cranes to handle waste, slag, sludge, and straw bales. Trash, rubbish, slag, sludge, straw bales, and other waste are handled by biomass industrial cranes for waste from the energy and biomass industries. Provide automatic waste disposal industrial cranes, slag disposal industrial cranes, sludge disposal industrial cranes, straw bale disposal industrial cranes, biomass processing industrial cranes, and other types of biomass industrial cranes.

entertainment industry
Overhead industrial cranes and lifting equipment allow you to gain a high position in the entertainment industry. Ceiling mounted overhead cranes with stage cranes for the entertainment industry are widely used in studios, stages, aquariums and theme sections, etc.

Gas and Oil Industry
In the gas and oil industry, there are several types of industrial cranes and cranes used for material handling. Industrial cranes and hoists offer excellent safety and stability for material handling in the gas and oil industries. Material handling costs can be reduced by using industrial cranes and hoists with portable capabilities.

Power and energy industry
For the power industry, industrial crane services are available. For the power industry, industrial crane services are available. Industrial Crane and Energy Industry Industrial Crane Services can help you save money while improving efficiency and safety. Insulated cranes, electrolytic aluminum cranes, explosion-proof single-girder cranes, explosion-proof double-girder cranes, and explosion-proof cranes are all examples of specially constructed industrial cranes.

Food and beverage industry
Sanitary cranes, clean cranes, and hoists are used in the food and beverage industry. Hygiene is a necessity in the food production industry. Hoists and other mechanical equipment are generally avoided in the food manufacturing process to avoid contamination of food with foreign particles. Overhead cranes commonly used in the food and beverage industry are cleaning cranes, sanitary cranes, etc.

Marble and Stone Industry
There are several types of marble cranes to choose from, including overhead industrial cranes and gantry industrial cranes with a lifting capacity of up to 550 tons. You can buy marble lifting equipment with high efficiency, high precision, high safety, and low noise, suitable for indoor and outdoor marble handling.

Metallurgical industry
For the steel industry, processing double girder overhead crane types for hot ladles, high-temperature steel products, finished steel plates, blocks, and cubes, are the types of steel designed to ensure high safety and effectiveness in your material handling.

mining industry
Mining industrial cranes keep your loads safe and secure. Mining cranes are designed for efficient material handling in the mining industry in confined, harsh environments with safety in mind to avoid industrial crane accidents. Mining industrial cranes are your lifting protection! Mining electric winches, grab cranes, explosion-proof single-beam cranes, explosion-proof double-beam cranes, and explosion-proof hoists are some specially designed industrial cranes.

paper industry
Paper handling is handled by industrial cranes in a sensitive, hygienic, and efficient manner. Material handling in paper mills requires process industrial cranes. Process industry cranes handle your reels efficiently, cleanly, and softly, protecting your paper output from damage.

Petrochemical industry
For the petrochemical industry, 5-25 tons of coking cranes, explosion-proof single-beam cranes, explosion-proof double-beam cranes, and explosion-proof hoists are widely used in industrial applications.

wind energy industry
Industrial cranes: industrial cranes for lifting wind energy, industrial cranes for lifting industrial cranes for safe lifting of wind energy. Industrial Cranes Industrial cranes for wind energy for high safety and efficient material handling. Lifting industrial cranes for installation and maintenance of wind turbines. Specially designed industrial cranes: lattice gantry cranes, heavy-duty outdoor gantry cranes, outdoor cranes

Waste treatment industry
Grab-type industrial cranes for waste management. 5 to 25 tons grab industrial cranes for waste handling ensure your efficiency, safety, and reliability.

Lumber, log industry
Log Industrial Cranes for Log Handling | Log Industrial Cranes for the Wood Processing Industry – Industrial Crane Equipment Specially Designed for the Log Industry: Clamp Cranes Check Log Industrial Cranes Now.

Industrial gantry cranes for subways, subways, and tunnels
20 tons, 30 tons, 40 tons, and 50 tons of industrial gantry cranes are typical for material handling in tunnels, subways, subways, and other constructions.

Main Structure and Feature

Mainly consists of a bridge, trolley, crane traveling mechanism, electrical system, etc.

There are three main operating mechanisms: lifting mechanism, trolley traveling mechanism, and crane traveling mechanism. And each of them is equipped with separate motors for their own drive. For 5-ton and 10-ton cranes, normally single-hook cranes only have one set of lifting mechanisms. For 16/3.2~50/10t cranes, there are two separate main and auxiliary lifting mechanisms with two hooks.

The main hook is used for lifting heavy objects and an auxiliary hook can be used for lighter ones. And the auxiliary hook can also be used to help the main hook tip and turn over the workpiece. Should pay more attention that never allowing two hooks to lift two objects at the same time. The weight of the object is forbidden to surpass the rated lifting capacity of the main hook when they work together.

Bridge Frame

Consisted of the main girder, end girder, walking board, column, testing cage, cabin, and its platform.

Main Girder

Welded box type double the main beam.

The main end beam is contacted by high-strength bolts.

The main beam can be a normal rail beam or an off-trail beam.

The metal structure adopts a steel pretreatment process, X-ray or ultrasonic inspection of the butt welds of the main beam’s cover and web.

End Girder

The end beam is a rectangular tube welded by a high-quality steel plate.

The main end beam is contacted by bolts.

The whole bridge is separated into two pieces for transportation and installation.

Others

Lay the track on the upper cover plate for trolley traveling.

Install the crane traveling mechanism on the side of the walkway which contacts with the main girder.

Install the trolley sliding wire on the other side.

There is a railing on the outboard of the walkway in order to ensure the operator’s safety during maintenance.

The cab usually hangs beneath the bridge with electrical control equipment in it and mainly for operator use.

Trolley

Consists of a trolley frame, lifting mechanism, trolley traveling mechanism, etc.

Trolley Frame

Welded of steel plate with high intensity and strong rigidity.

Equipped with lifting mechanism and trolley traveling mechanism.

Lifting Mechanism

One set of independent driving devices for single hook and two separate driving devices for double hook (main and auxiliary).

Lifting mechanism working principle, through high speed rotating of YZR type crane special motor, and gear coupling drive involute gear reducer. Then the low-speed shaft of the reducer turns the wire rope drum. As long as the control of motors and their positive and negative rotation can achieve the lifting function of the hook.

In order to ensure the security and reliability of the lifting mechanism, the brake is installed on the high-speed shaft of the reducer. And the load limiter is installed on the bearing pedestal which supports the drum to avoid overload. The mechanical drawing is as follows:

image
  1. Main overload limitation;
  2. Main lifting motor;
  3. Main lifting gear coupling;
  4. Main lifting drum;
  5. Main lifting brake wheel coupling;
  6. Main lifting brake;
  7. Main lifting reducer.

Trolley Traveling Mechanism

Trolley traveling mechanism working principle, the involute vertical gear reducer driven by a motor. The low-speed shaft of the reducer contacts to the active wheel of the trolley frame in the way of centralized driving. The motor adopts double-output gear and there is a brake on one end of it.

There are four wheels installed under the trolley. Two of them are active wheels and the others are driven wheels. Driving devices include

image 1

1. Motor; 2. Brake; 3. Reducer; 4. Compensating shaft; 5. Coupling; 6. Wheels, etc.

Crane Traveling Mechanism

There are four traveling wheels installed on each side of the two end beams. Two of them are active wheels and the others are driven ones. The driving device of active wheels is installed on the walkway. Here adopt two sets of symmetrical independent driving devices and we call them respectively driven.

The reducer adopts circular-arc gear one of which load capacity is higher than the involute gear reducer of the same type. All of the mechanisms adopt rolling bearing with A.C. electromagnetic block brake.

Driving devices include 1. Reducer; 2. Motor; 3. Brake; 4. Coupling; 5. Coupling; 6. Wheels, etc are shown in the mechanical drawing as follows:

image 2

The contaction of the mechanical parts all adopts gear coupling. In this way, it can work well by gear coupling compensated even if there is an error caused in manufacture and installation or deflection between the parts caused by bridge deformation when loading.

Active and driven wheel axle support on the angular bearing box for easy assembly and maintenance.

Other Equipment

Bumper

The crane bumpers are installed on both ends of the two end beams. The trolley bumpers are installed under the trolley frame, and usually polyurethane buffer. Also can choose according to customer’s requirement. Use to reduce the collision possibility between two cranes within the same span or the impact influence caused when the trolley reaches the limit position at both ends.

Crane Conductor Wire Frame

In order to prevent the hook or wire rope from colliding with the high voltage supply when the trolley runs at the limiting position, the crane conductor wireframe is installed on the end close to a power supply under the two main girders of the bridge.

Crane Pantograph

The pantograph is installed on the bottom of the main girder. The power line is installed in the three sets of current collectors to supply the power of the whole crane.

Electrical System

The electric control box layout is reasonable, easy to repair

Security trolley line or angle steel trolley line

External cables are equipped with mark line number

Trolley moving power is supplied by a flat cable

The conductor is I steel or C shape sliding line

Safety sliding touchline with high conductive rate and low-pressure drop; current collector with high speed.

Lifting and crane can be independently controlled; also can work separately or together.

Limit and Safety Switch

Crane traveling, trolley traveling, and lifting mechanisms are all equipped with limit switches to limit the travel distance of every mechanism.

The circuit will be cut off when the limit switch works, then the machine shuts down. It will move in the opposite direction when switches on the power again. Thus, ensuring safety.

n order to prevent the operators and maintenance staff from the accident, the safety switch is installed on the access door of the walkway which leads the way from the cab to the bridge, and also on the railing which leads to the end beam.

Operation Mode

Cab control and ground control

Special cabin for bridge crane or capsule driver room, open vision, comfortable operation.

The cable has an open style, close style, can fix on the left or right

The cab hangs under the side walkway of the crane bridge close to the end beam. Inside of it includes control equipment of each mechanism, distribution board, emergency switch, bell push button, etc.

Ground control (wired or remote), without a professional driver

Choose according to customer’s different requirements

Optional Functions

Speed governing each operating mechanism (1:10 or more)

Overload limiter, alarm display, load weighing, and display

Height limiter

Hook spur changes of main and auxiliary hook for single trolley

Central lubrication

PLC control, fault detection, display records, and print system

Double Girder Electric Hoist Overhead Crane Parameters Table

CapacitySpanLifting heightLifting speedTrolley speedCrane speedWork dutyTrack type
S(m)mm/minm/minm/min
5 ton10.5~31.56~308(0.8/8)20(30)20(43)A3~A4P30
10 ton10.5~31.59~307(0.7/7)20(30)20(43)A3~A4P30 P38
16 ton10.5~31.59~303.5(0.35/3.5)20(30)20(43)A3~A4P38
20 ton10.5~31.59~303.3(0.33/3.3)20(30)20(43)A3~A4P38  P43
25 ton10.5~31.59~243(0.3/3)20(30)20(43)A3~A4P43
32 ton10.5~31.59~243(0.3/3)20(30)20(43)A3~A4P43
40 ton10.5~31.59~202.3(0.23/2.3)20(30)20(43)A3~A4P43  QU70
50 ton10.5~31.59~201.8(0.18/1.8)20(30)20(43)A3~A4P43  QU70
Lifting capacitySpanLifting heightLifting speedTrolley speedCrane speedWork dutyTrack type
S(m)mm/minm/minm/min
5 ton10.5~31.56~1611.537.270.6A3~A7P38
10 ton10.5~31.56~168.537.470.6A3~A7P38  P43
16 ton10.5~31.56~167.940.174.3A3~A7P43
20 ton10.5~31.56~167.24075.1A3~A7P43
32 ton10.5~31.56~1863764.9A3~A7QU70
50 ton10.5~31.56~16631.358.5A3~A7QU80
75 ton10.5~31.56~203.931.361A3~A7QU100
100 ton13~316~203.133.661.8A3~A7QU100
125 ton13~316~203.93362.3A3~A7QU100
160 ton13~316~223.54068A3~A7QU120
200 ton13~316~202.63248A3~A7QU120
250 ton13~316~202.23250A3~A7QU120
300 ton13~316~242.42842A3~A7QU120
350 ton13~316~242.22842A3~A7QU120
400 ton13~316~242.63145A3~A7QU120
450 ton13~316~242.12742A3~A7QU120

QDX Double Girder Overhead Cranes Video

Best Double Girder Overhead Cranes Manufacturer

WeiHuaCrane is a leading Double Girder Overhead Cranes manufacturer, supplier, company, and factory.
As one of the leading Double Girder Overhead Cranes manufacturers, WeiHuaCrane provides you with cost-effective overhead lifting equipment, which can be perfectly adapted to your working environment.
The first choice for factories and construction companies, fast production, fast service, and can meet the needs of your material handling projects in a short time.
Customize the solution according to your usage environment.
We design, manufacture, install and maintain Double Girder Overhead Cranes.

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After receiving your message, our engineers will first customize the Double Girder Overhead Crane for you according to your needs and design the drawings, and then the sales manager will provide you with the price and contact you. Please wait.

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In order to provide you with prices and drawings quickly, please fill in the message as far as possible: ⭐Lifting capacity; ⭐Lifting height; ⭐Span(m);⭐Power supply: __v/__phase/__Hz, etc.; If you have any other information, such as 1️⃣. What materials will the crane lift? 2️⃣. Traveling length: m? Do you need us to provide the rail for you? 3️⃣. crane working condition or environment? 4️⃣. how long meters does your crane travel? 5️⃣. how many hours does it work per day?

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