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Insulated crane, double girder overhead crane with insluated crane hook, for material handling in aluminum lead, zinc electrolysis nonferrous plant, etc.
√Overhead Crane Type: QY, √ Capacity : 5~50 ton, √ Span: 10.5~31.5m, √ Working Class:A6
Insulated Crane|Double Girder Overhead Crane with Insulated Hook- QY Series
| Product Type: | QY |
|---|---|
| Lifting Capacity: | 5~50t |
| Span: | 10.5m-31.5m |
| Lifting Height: | |
| Working Class: | A6 |
| Ambient Temperature: | -25~50℃ |
| Crane Price Rangs | More Inquiry Form |
| $12,500 – $80,000+, Insulation requirements and application environment directly affect pricing. Contact us to get the latest price. | |
| [email protected] 008615038346929 | |
Isolation Crane Introduction
Isolation crane is a double girder overhead crane with the insulation crane hook. It a kind of material handling equipment used to lift and transport loads in charged environment, such as the plants where electrolyse non-ferrous metals, such as magnesium, aluminum. Isolation crane is a heavy duty overhead with double brake in the hoisting for ensuring safety. The lifting capacity of the isolation crane is 5 to 50 tons and the working class is A6. The specific parameters of the isolation double girder overhead crane is as follow:
| Product Type | QY |
|---|---|
| Lifting Capacity | 5~50t |
| Span Length | 10.5~31.5m |
| Working Class | A6 |
| Ambient Temperature | -25~50℃ |
Features and Benifits of Electrical Isolation Crane 5–50 t
Insulated double-girder overhead cranes are essential for workshops where metal handling meets electrical risk. You'll find them in aluminum smelting, magnesium processing, and other non-ferrous metal plants. These cranes handle medium to heavy loads safely while preventing electrical currents from passing through the crane structure. That means operators can move ingots, molds, or chemical containers without worrying about shocks or equipment damage.
In practice, these cranes help streamline daily operations. For example, in an aluminum plant, workers often move 5–25-ton slabs from casting tables to storage areas. Using an insulated crane reduces downtime, prevents accidental electrical conduction, and ensures consistent workflow. It's not just about lifting heavy materials—it's about keeping your plant running safely and efficiently every day.
Insulation is the core of these cranes. In workshops where molten metal, electrolytic cells, or wet conditions are common, even a small electrical leak can cause serious accidents. Triple insulation ensures safety across the most critical components.
- Hook, trolley frame, and bridge are fully insulated from electricity.
- Prevents accidental current from reaching the load or operator.
- Critical in environments with electrolytic cells, molten metal, or wet conditions.
Stopping power matters when moving heavy or irregular loads. A hoist that can hold a load securely reduces accidents, prevents swinging, and keeps operations smooth.
- Stops loads securely, even with sudden starts or uneven weights.
- Reduces swinging or jolts when lifting irregularly shaped slabs or molds.
- Designed for continuous operation in high-demand industrial environments.
Operators need clear vision and protection. A well-designed cabin lets them work safely and efficiently while keeping them comfortable during long shifts.
- Provides 270° visibility over the work area, improving accuracy during lifts.
- Protects operators from heat, dust, or sparks common in metal processing workshops.
- Ergonomic layout reduces fatigue, keeping operators alert and safe.
Movement along the runway should be smooth and reliable. Slip-free wheels and durable mechanisms prevent load misalignment and minimize downtime for maintenance.
- Wheels stay secure on the runway, even in slightly worn or dusty conditions.
- Reduces the risk of load misalignment during long spans.
- Durable design lowers maintenance requirements and keeps the crane running reliably.
Safety systems are critical for preventing accidents and protecting both operators and equipment. These devices work automatically, reducing human error and operational risk.
- Overload limiter prevents lifting more than the rated capacity.
- Limit switches stop the hook at the top and bottom of the lift automatically.
- Electrical protection circuits help avoid short circuits or accidental shocks.
Typical Applications and Industries
Isolation crane is used for material handling and lifting, equipment installation and maintenance in electrolysis nonferrous plants for smelting aluminum, magnesium, lead, zinc and others, etc.
In aluminum workshops, cranes are used to move extremely heavy and often hot materials. Safety is critical because molten aluminum can cause serious accidents, and handling large ingots or molds requires precision. Insulated cranes keep operators protected while moving these heavy loads.
- Handling molten aluminum molds and ingots (5–25 t per lift)
- Transporting anodes, cathodes, and casting frames
- Moving ladles and trolleys in hot workshops
Magnesium and other non-ferrous metals are light but reactive. Loads can be irregular in shape and sometimes require careful handling to avoid damage or sparks. Insulated cranes provide a reliable way to move these materials safely.
- Lifting magnesium blocks or slabs (3–15 t per lift)
- Handling raw material containers for electrolysis
- Transporting heavy molds and processing equipment
Electrochemical plants often involve liquids or chemicals that conduct electricity. Loads such as tanks or trays need careful handling to prevent accidents. Insulated cranes keep these materials electrically isolated while allowing smooth, controlled movement.
- Moving electrolyte tanks and chemical vessels (2–10 t per lift)
- Transporting insulated trays or racks carrying reactive metals
- Lifting maintenance equipment in areas with live currents
In general industrial facilities, cranes handle machinery, dies, or press components that can weigh tens of tons. Insulated cranes ensure the operator and equipment remain safe, especially in environments with electrical hazards or tight workflows.
- Moving heavy machinery, dies, or press components (10–50 t per lift)
- Loading/unloading workpieces in production lines
- Handling equipment in hazardous or electrically active environments
Electrical isolation cranes, also called insulated overhead cranes, are designed for environments where electricity and metal come into contact. They prevent electrical conduction through the crane structure, keeping operators, loads, and equipment safe. Knowing what loads these cranes typically handle will help you select the right model for your workshop or plant.
In aluminum and magnesium processing plants, insulated cranes move heavy metal slabs and ingots safely, often in electrically active areas. These materials can be hot, conductive, or uneven, making insulation critical.
- Weight range: 2–25 t per lift
- Handling tips: Use clamps or grabs designed for insulated lifting; check surfaces for heat or residual conductivity.
- Notes: Bundled slabs increase weight—ensure crane capacity accounts for combined loads.
Molds and casting frames are common in metal workshops. Their irregular shapes and conductive surfaces make insulated cranes essential for safe handling, particularly near molten metals or electrochemical equipment.
- Weight range: 3–15 t per unit
- Handling tips: Position hoists carefully to balance the load; lift slowly to avoid sudden movements that could stress the insulation.
- Notes: Some molds are handled individually, while others are grouped—plan lift sequences with safety margins.
In electrochemical and refining workshops, insulated overhead cranes transport tanks or trays carrying reactive liquids or metals. The electrical isolation ensures no current passes through the crane, preventing accidents.
- Weight range: 2–10 t per container
- Handling tips: Lift slowly, avoid sudden swings, and check for conductive residues on tanks or trays.
- Notes: Insulation keeps operators safe even in areas with live currents or wet conditions.
In general industrial plants, insulated cranes handle heavy machinery, dies, or press components that may come in contact with electrically active environments. The isolation feature ensures safety while moving large, awkward, or high-value loads.
- Weight range: 10–50 t per lift
- Handling tips: Inspect lifting points and ensure proper load balance; consider multiple trolleys for oversized components.
- Notes: Electrical isolation reduces risk of sparks or electrical shocks during machinery installation or relocation.
Isolation Crane Main Parts and Components
Isolation crane is consisted of four main parts, the box-type bridge structure, crane travelling mechanism, trolley, electric parts, and others, etc.
Isolation crane drawing
1. Insulation measures of isolation cranes
In order to prevent the crane and operator from danger of current to ensure their safety, there are three insulated devices equipped on the isolation crane, which are placed between:
- the hook and pulley,
- lifting mechanism and the trolley frame,
- trolley frame and crane.
2. Bridge frame
As the main force component of isolation, the bridge frame is mainly consisted of double beam, double track, end beams, trolley tracks, walkways, railings, ladders, and other metal structures.
- The main beams and end beams are structured with the box-shape, made of Q235 or Q345 steel, with the minimum thickness no less than 6 mm.
- Main beam camber is (1 ~ 1.4) S / 1000, and the maximum camber position controlled within tenth of central span.
- Trolley tracks which lay on the bridge is a whole railway to ensure the smooth moving of the trolley, and the insulating devices is placed between the trolley tracks and trolley wheels to ensure the insulating features of the isolation crane.
3. Driver’s cabin
Driver’s cabin is a closed and tempered glass cabin, which is the workplace of crane operator, therefore the driver’s cabin has to be durable, safe and reliable, and at same time it should provide the driver a good vision and enough comfortableness. The features of driver’s cabin are as follow:
- Good vision, 270 ° viewing angle of the front range.
- Reliable quality and easy to be cleaned and maintained.
- High safety, cabin alarms, unobstructed walking and activity space, etc.
4. Crane traveling mechanism
The traveling mechanism of isolation crane: During operation, driving wheels never slip; when braking, it is steady and reliable.
5. Trolley parts
Main and auxiliary hoisting mechanisms of isolation crane have separate driving device, which can lift and handle loads independently and can coordinate to complete the work of turning loads over. Dual braking is used by the hoisting mechanism.
6. Isolation Crane Safety Protection Device
- Overload limiter is installed on the main crane hook, which has the functions of weight display, overload alarming, and automatic power off.
- Each mechanism is installed with closed electro-hydraulic brake while main lifting adopts dual brakes.
- Lifting limit switch, overcurrent protection, no-voltage protection, phase protection, zero protection, emergency switch, the main isolating switch, hatch door interlock switch, bells prompt and other safety devices to ensure the normal operation of cranes and related personnel personal safety.
- A few shock proof lamps can be installed under the bridge frame according to your needs.
Why Choose an Insulated Crane
Insulated cranes, also called electrical isolation cranes, are designed to handle heavy materials safely in environments where electricity or conductive liquids are present. They are not just about lifting—they're about protecting people, equipment, and workflow. Using the right insulated crane reduces risks and makes daily operations smoother.
Workshops that use live currents or handle electrolytes, molten metals, or other conductive materials need cranes that don't carry electricity. Insulated cranes create a safe barrier between the load and the crane structure.
- Keeps electricity from traveling through the crane and reaching the operator or load
- Essential in environments with wet, corrosive, or conductive materials
- Reduces the risk of shocks, short circuits, and equipment damage
Operator safety is a top priority. An insulated crane reduces the chances of electrical accidents, even when handling hot or irregular loads.
- Minimizes exposure to electrical hazards
- Protects expensive equipment from accidental current flow
- Provides peace of mind for operators during long shifts
Many industrial workshops require moving materials that are not only heavy but also hot or unevenly shaped. Insulated cranes are designed to handle these safely without compromising control or stability.
- Smoothly lifts slabs, molds, tanks, and machinery
- Maintains balance even with awkwardly shaped loads
- Reduces risk of material damage and operator error
Industries working with reactive or conductive metals face unique challenges. Insulated cranes meet these demands while keeping operations safe and reliable.
- Supports daily operations in aluminum, magnesium, and non-ferrous metal plants
- Ideal for electrochemical and refining workshops
- Provides operational safety where standard cranes could be dangerous
Selection Guidance
Choosing the right insulated crane is more than picking a weight capacity. You need to match the crane to your workshop conditions, load types, and operational demands. Providing clear specifications upfront ensures the crane is safe, efficient, and durable for your specific application.
Specifying the weight and type of materials is critical. Insulated cranes need to handle both the heaviest loads and any irregular shapes safely.
- Specify the heaviest weight the crane will handle and the kinds of materials (slabs, molds, tanks, machinery).
- Include any irregular or bundled loads that could affect balance and safety.
Knowing the span and maximum lift height ensures the crane fits your facility and operates efficiently across the work area.
- Provide the distance the crane needs to travel along the runway.
- Include the maximum lift height to ensure the hoist and trolley fit your facility.
The duty cycle defines how frequently and intensely the crane will be used. This helps select the proper hoist and mechanical components for long-term reliability.
- Duty cycle defines how often and intensely the crane will be used.
- Heavier or continuous lifting requires components designed for higher duty cycles.
Providing electrical details allows the manufacturer to configure insulation and connection systems that match your plant's power setup.
- Specify voltage, frequency, and available power connections.
- Clarify insulation needs if the workshop has live currents, conductive liquids, or corrosive conditions.
Environmental factors affect crane durability and safety. Providing this information ensures the crane is built to withstand heat, humidity, dust, or chemical exposure.
- Temperature ranges, dust, chemical fumes, or corrosive mist can all affect crane components.
- Indicate if the crane will operate outdoors or in humid or high-temperature areas.
Quote Request Guidance
To get a fast and accurate quotation for an insulated overhead crane, it's important to provide as much detail as possible. The more we know about your facility and operational needs, the better we can recommend the right crane configuration.
Understanding the facility type ensures the crane is suited for your space and workflow.
- Indicate whether the crane will be used in a plant, warehouse, or workshop.
- Specify if it's an aluminum, magnesium, or non-ferrous metal processing facility, or an electrochemical workshop.
Duty cycle determines how often and how heavily the crane will operate, which affects component selection and durability.
- Share how often and how heavily the crane will be used.
- Helps determine the required hoist and bridge components for long-term reliability.
Providing the runway span and lift height ensures the crane will fit your facility and operate efficiently.
- Provide the runway length and maximum lift height.
- Ensures the crane will fit your space and meet operational needs.
Electrical details are critical for insulated cranes to maintain proper isolation and safe operation.
- Include voltage, frequency, and any special power supply characteristics.
- Critical for insulated cranes to ensure electrical isolation works properly.
Details about hook approach and load types help configure crane reach, lifting tools, and safety systems.
- Describe how close the hook needs to get to walls, beams, or machinery.
- Note load types, sizes, weights, and whether they are irregular or bundled.
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