Double girder insulated overhead travelling crane
Double girder insulated overhead travelling crane Parameters Manufactured by Henan Mine Crane
| Parameter | Specification | Remarks |
| Type | QYE | Type test specification |
| Product Name | Insulated Bridge Crane | Type test product name |
| Rated Lifting Capacity | 5t – 50t (double trolley) | Customizable |
| Span | 7.5m – 31.5m | Customizable for workshop |
| Lifting Height | 6m – 20m | Customizable |
| Trolley Control | Encoder + CI card inverter | Separate/cooperative operation |
| Insulation System | Insulation pad + sleeve + plate | Mechanical connection + electrical isolation |
| Speed Control | High precision stepless speed regulation | Smooth lifting & traveling |
| Working Class | A5 – A6 | For special environment operation |
| Protection Level | IP54 – IP65 | Dustproof, corrosion resistant |
| Working Temperature | -20℃ – 60℃ | Adapt to high temperature environment |
| Power Supply | 380V/50Hz; 220-660V/50-60Hz | Global power grid customizable |
| Application | Strong current, high temperature, corrosive environment | Power, metallurgy, chemical industry |
Product Introduction of Henan Mine crane Double girder insulated overhead travelling crane
Henan Mine Crane QYE double trolley insulated overhead travelling crane is a special lifting equipment developed in strict compliance with the standard of insulated overhead travelling crane, mainly used for equipment maintenance, material transfer, heavy components lifting operations under high-voltage conditions, is Henan Mine Crane in the field of special insulated lifting standard products.
This double trolley insulated overhead travelling crane is upgraded in all dimensions for the global high-voltage special operation scenarios: it can be operated individually or synchronized for joint operation; insulated mats are installed between lifting mechanisms, and insulated sleeves and plates are configured in the connection parts to form mechanical connection + electrical isolation double insulation protection, completely blocking leakage currents.
Equipped with high-precision drive and smooth speed control system, lifting and running without impact shaking, to avoid damage to the surrounding high-voltage equipment; modularized design of the whole machine, common global standards for accessories, to meet the needs of high-voltage operations in the global electric power, metallurgy, chemical industry and other industries, it is a high-voltage environment, safe and efficient lifting solutions.

1. Product core positioning and design standards
The core positioning of QYE double trolley insulated overhead travelling crane is to provide safe and insulated lifting solution for global electric power, metallurgy and chemical industry under strong current, high temperature and corrosive environment. The design is in line with China’s insulated overhead travelling crane industry standard, synchronized with international FEM, EU CE, IEC and other global certification requirements. For the three core pain points of high-voltage current leakage risk, high-temperature working conditions, and corrosive environments, QYE is designed with exclusive insulated protection and precision control configurations to satisfy the needs of A5-A6 class high-intensity intermittent operations.
2. Core structure and functional design
- Double trolley intelligent control system: using encoder, CI card frequency converter advanced control technology, double trolley can work independently and separately, suitable for light load material lifting; can also synchronize joint operation, to complete the large tonnage components lifting, high synchronization and flexible control.
- Double insulation protection system: high strength insulating pads are installed between the lifting mechanism, and the connecting parts are isolated by insulating sleeves and insulating plates, which builds double protection of mechanical connection and electrical isolation to ensure that there is no leakage of electric current between the machine body and the electrified body under the high-voltage environment, and ensure the safety of the personnel and the equipments.
- High-precision and smooth driving system: Equipped with high-precision driving device and stepless speed regulation system, the lifting, trolley operation and trolley operation can be smoothly adjusted, accurately controlling the hoisting speed and position, reducing the impact and shaking, and avoiding the collision with the surrounding high-voltage precision equipments.
- Heavy-duty stable bridge structure: the main beam adopts high-strength steel welding molding, stress relief treatment, strong rigidity, anti-deformation, suitable for high-pressure workshop heavy-duty lifting needs, running smoothly without shaking, to protect the stability of special working conditions.
- High-temperature and anti-corrosion structure: key components are made of high-temperature and corrosion-resistant materials, and the insulating components are suitable for high-temperature and slightly corrosive environments, so that there is no performance degradation under special working conditions for a long period of time, and the service life of the equipment is longer.
- Safety control system: the linkage is equipped with a professional main command controller, with clear gears, precise control, and a zero self-locking device, which eliminates malfunctions from the operation side and improves the safety of high-voltage environment operations.

3. Core product advantages
- Double insulation is safer: mechanical + electrical double insulation protection, completely block the leakage current, high-voltage environment, zero risk of electric shock, safety performance far exceeds the industry standard.
- Flexible control of double trolley: single/double trolley operation can be freely switched, with high efficiency in light load and smoothness in heavy load, one machine is suitable for multi-scenario lifting demand, and enhance the utilization rate of workshop equipment.
- Smooth speed regulation without impact: high-precision drive speed regulation, lifting without shaking, no impact, protect the material and the surrounding high-voltage equipment, reduce operational losses.
- Strong adaptability to multiple working conditions: It can simultaneously adapt to the triple harsh environments of strong current, high temperature and corrosive, and can be put into use without modification.
- Global adaptability and easy export: support international certification, global power grid customization, common international standards for accessories, and can be directly exported around the world.
4. Global Adaptation and Application Scenarios
- Application Scenarios: Global electric power high-voltage distribution room, substation maintenance workshop, metallurgy and smelting high-temperature and high-pressure work area, chemical corrosive material processing workshop, new energy high-voltage equipment production line, etc.
- Standard adaptation: support CE, ISO9001, GOST, FEM and other international certifications, power supply 220V-660V/50-60Hz fully customized, adapted to the global power grid.
- Environmental adaptation: high temperature resistance, dust resistance, resistance to minor corrosion, coastal salt spray environment can be upgraded to anti-corrosion, global high-voltage special scenarios can be used in a stable way.
5. Global exclusive supporting services
- Provide English/Spanish/Arabic full set of technical data, installation drawings, operation manuals, insulation test reports;
- 7×24 hours global remote video installation and commissioning guidance, can arrange professional technicians to install at home;
- Germany, the United States, Malaysia, the United Arab Emirates equipment parts centers, insulation parts 72 hours of rapid global delivery;
- Multi-language after-sales hotline, professional insulation crane engineers remote troubleshooting, insulation maintenance guidance.
What Can Henan Mine Crane Double girder insulated overhead travelling crane Offer You?
| Value Category | Specific Benefits | Description |
| Insulation Safety | Dual insulation protection | Block leakage current, ensure high voltage operation safety |
| Operation Flexibility | Dual trolley separate/cooperative work | Adapt to light/heavy load, improve working efficiency |
| Lifting Stability | High precision speed control | Reduce shock and shaking, protect surrounding equipment |
| Environment Adaptability | High temperature & corrosion resistance | Suitable for harsh special working conditions |
| Global Adaptability | International certification & custom power | Direct export worldwide, no modification |
| Service Life | High quality insulation materials | Long service life, less performance attenuation |
| Operation Precision | Accurate speed & position control | Meet high precision hoisting requirements |
| Maintenance Convenience | Universal international standard parts | Easy maintenance and spare parts replacement |
Detailed Specifications for Henan Mine Crane Double girder insulated overhead travelling crane
|
Capacity |
T |
32/5,50/10 |
|||||||
|
Span |
m |
10.5 |
13.5 |
16.5 |
19.5 |
22.5 |
25.5 |
28.5 |
31.5 |
|
Lifting height |
m |
16/18 |
|||||||
|
Lifting speed |
m/min |
15.6 |
|||||||
|
Trolley travelling speed |
m/min |
3.36-33.6,2.9-29 |
|||||||
|
Crane travelling speed |
m/min |
92.7 |
93.7 |
86.5 |
|||||
|
Total weight |
kg |
15406 |
17290 |
20020 |
21724 |
24213 |
28579 |
31970 |
35389 |
|
Max. Wheel load |
KN |
104 |
111 |
120 |
125 |
132 |
144 |
152 |
162 |
|
Rail recommended |
Model |
43kg/m |
|||||||
|
Total motor power |
kw |
27.8 |
31.8 |
||||||
|
Main dimension (mm) |
Span(m) |
10.5 |
13.5 |
16.5 |
19.5 |
22.5 |
25.5 |
28.5 |
31.5 |
|
Rail top to crane top |
H |
1750 |
1840 |
||||||
|
Rail top to hook center |
H4 |
55 |
5 |
||||||
|
Crane base distance |
W |
5140 |
5334 |
5940 |
|||||
|
Crane width |
B |
3450 |
4400 |
||||||
|
Trolley rail distance |
K |
1400 |
|||||||
|
Hook left limitation |
S1 |
800 |
|||||||
|
Hook right limitation |
S2 |
1250 |
|||||||
Product Advantages Overview
Detailed Drawing of Double girder insulated overhead travelling crane Manufactured by Henan Mine Crane
Application Scenarios for Henan Mine Crane QY Insulated Bridge Cranes
-
Aluminum Electrolysis WorkshopInsulated overhead travelling crane is used in aluminum production line for lifting anode charcoal briquettes, aluminum liquid packages and electrolytic cell maintenance components. The insulated structure of the whole machine insulates it from strong currents, and the double trolleys are synchronized to lift more smoothly, which is suitable for the high-risk working conditions of electrolytic workshop with electricity.
-
Copper Electrolysis WorkshopInsulated overhead travelling crane is suitable for lifting cathode plate, anode plate and other materials in copper electrolysis section, insulated to block electrolysis current, double trolleys work together to improve the stability of large parts transfer, to ensure the safety of non-ferrous metal electrolysis operation.
-
Electrolytic Zinc/Electrolytic Nickel Smelting WorkshopInsulated overhead traveling crane is used in zinc and nickel electrolysis smelting production line to lift electrolysis pole plate, smelting auxiliary materials and maintenance equipment. The insulated structure prevents current breakdown, and the double trolley design meets the smooth transfer of long and heavy materials.
-
Metallurgy Electroplating WorkshopInsulated overhead travelling crane is suitable for large-sized workpiece plating process, isolating the potential danger of electrically charged equipment and conductive solution in the workshop, and the double trolleys are accurately aligned to enhance the lifting efficiency of plating workpieces and operational safety.
-
Non-ferrous metal electrolytic deep processing workshopInsulated overhead travelling crane is used in copper, aluminum and other non-ferrous metal electrolysis deep processing workshop, insulated design avoids damage to the equipment caused by conductivity, double trolley synchronous operation, smooth lifting of long-size profiles and billets.
-
Chemical Electrolysis Reaction WorkshopInsulated overhead travelling crane is suitable for chemical electrolysis production section, lifting electrolysis reaction equipment, electrode components, reliable insulation performance to avoid current-induced safety risks, double trolleys can be divided to complete the heavy load and auxiliary lifting.
Crane Operation Demonstration
How to Choose the Best Crane Manufacturer in China
-
1Clarify Your Crane NeedsThoroughly understand your lifting requirements (load details, frequency, and workspace environment) before approaching crane manufacturers.
-
2Determine Crane Service ClassCalculate the required crane service class based on your operational intensity to ensure optimal performance and longevity.
-
3Explore Crane Supplier Custom Features:Investigate available customization options and special features to enhance safety, efficiency, and precision for your specific application.
-
4Assess Crane Factory Engineering CapabilityEvaluate the manufacturer's engineering strength to ensure they can design a suitable solution tailored to your needs.
-
5Verify Quality & Compliance of Crane CompanyCheck the crane manufacturer's manufacturing quality, certifications, and compliance with international standards and your local safety regulations.
-
6Ensure Support & ReferencesConfirm the manufacturer provides reliable after-sales support and has a proven track record with positive references in your industry or region.
Why We Are More Trustworthy
Experienced company
Professional team & equipment
Productive capacity
Customized design services
Why Our Cranes Earn Customers' Trust
The services we provide
Free customization scheme
Regular Maintenance Reminder
Technical support consultation
Free customization scheme
Our Patents and Certifications
Customer Testimonials & Top Choices
Related Product Recommendations
Become our distributor
Your Top Concerns About Henan Mine crane Manufacturing's Double girder insulated overhead travelling crane and Professional Answers
-
What flexible cooperation options are available for international clients?Answer: We offer globally competitive cost-performance ratios and diversified international cooperation solutions! We provide multiple trade term options including FOB, CIF, and DDP, along with customized payment methods such as letters of credit, installment payments, and milestone-based project payments.
-
What is the principle behind the insulation protection of a double-girder insulated overhead crane?Answer: Insulation pads are installed between the hoisting mechanisms to prevent mechanical conduction, while insulating sleeves and insulating plates are used at connection points to achieve electrical isolation. This dual-layer approach blocks current conduction, ensuring there is no leakage current in high-voltage environments.
-
What scenarios are dual-trolley systems suitable for?Answer: When lifting heavy-duty, high-tonnage components, the dual trolleys operate in synchronized coordination to distribute the load and ensure smoother operation, thereby guaranteeing safety during lifting operations in high-voltage environments.
-
What voltage range can this insulated crane accommodate?Answer: The standard configuration supports high-voltage environments ranging from 10 kV to 35 kV. Depending on the customer’s specific high-voltage operating conditions,
-
Can the equipment operate simultaneously in high-temperature, corrosive, and high-current environments?Answer: Yes. The equipment’s critical components are made of high-temperature-resistant and corrosion-resistant materials, and the insulation components are specifically designed for multiple harsh operating conditions. It can simultaneously handle high-current conduction, high-temperature radiation, and mildly corrosive environments, ensuring long-term stable and trouble-free operation.
-
Can the rated lifting capacity, span, and lifting height be customized?Answer: Fully customizable in every aspect; we offer personalized designs based on workshop dimensions, material tonnage, and high-voltage operational requirements.
-
Does the product comply with international safety standards, and can it be exported globally?Answer: The product complies with Chinese standards for insulated cranes and is compatible with major global safety certifications such as EU CE, IEC, and FEM. The power supply is compatible with global power grids, allowing direct export to regions including Europe, the Americas, Southeast Asia, and the Middle East.
-
What is the synchronization accuracy of the dual-trolley system?Answer: The dual trolleys utilize closed-loop control via encoders and CI-card inverters, ensuring minimal synchronization error. Speed regulation is smooth and seamless, eliminating issues such as asynchronous operation, swaying, or deviation, thereby ensuring stability during heavy-load lifting operations.
-
Is the equipment difficult to install?Answer: The modular assembly design ensures a straightforward installation process. No large-scale specialized lifting equipment is required; a standard installation team can complete the task with remote video guidance. The installation process does not compromise the equipment’s insulation performance.
-
What precautions should be taken during routine maintenance?Answer: Routine maintenance involves checking the integrity of insulation components, cleaning dust and debris from the equipment surface, and periodically lubricating transmission parts. No specialized insulation maintenance personnel are required; ordinary workers can perform basic maintenance after simple training.
-
How does the high-precision speed control system benefit high-voltage operations?Answer: Smooth, stepless speed control allows for precise regulation of lifting speed and position, reducing material impact and sway. This prevents collisions with surrounding high-voltage switchgear, precision instruments, and other equipment, further enhancing operational safety in high-voltage environments.
-
What are the advantages of this product compared to Konecranes insulated cranes?Answer: It offers better value for money, with procurement and maintenance costs amounting to only about 50% of Konecranes’ costs; its insulation performance and operational precision rival those of Konecranes; it supports customization; and with a global spare parts supply and a 72-hour response time, after-sales service is more convenient.
Operating Manual Insulated Bridge Crane
-
Each crane must display a rated load capacity plate in a conspicuous location.
-
No personnel are permitted on the girder during operation, nor may the hook be used to transport persons
-
Operation is prohibited without a valid operator's license or under the influence of alcohol.
-
Operators must maintain full concentration during operation; talking, smoking, or engaging in unrelated activities is strictly forbidden.
-
Keep the crane clean and tidy; do not store equipment, tools, flammable materials, explosives, or hazardous substances haphazardly.
-
Do not overload the crane.
-
When operating along obstacle-free paths, the hook, lifting device, or bottom surface of the load must remain at least 2 meters above ground level. When crossing obstacles, the load must clear the obstacle by at least 0.5 meters
-
For loads under 50% of rated capacity, both lifting mechanisms may operate simultaneously. For loads exceeding 50% of rated capacity, only one mechanism may operate.
-
.For bridge cranes equipped with main and auxiliary hooks, do not simultaneously raise or lower both hooks (except under special circumstances).
-
Welding or hammering on suspended loads, or working beneath suspended loads, is prohibited (except when properly supported).
-
Inspection or maintenance work may only be performed after power has been disconnected and a “Do Not Operate” sign is displayed on the power switch. If live work is unavoidable, implement safety measures and assign dedicated supervision.
-
Do not throw objects from the vehicle indiscriminately.
-
Regularly inspect limit switches and interlock protection devices.
-
Do not use limit switch impact as a stopping method.
-
Do not lift or lower loads when hoist brakes malfunction.
-
Do not operate the hoist above personnel or equipment.
-
When welding any part of the crane, use a dedicated ground wire; do not use the crane body as a ground.
-
When the hook is at its lowest position, ensure at least two full turns of safety rope remain on the drum.
-
Cranes must not collide with each other; using one crane to push another into operation is strictly prohibited.
-
When lifting heavy objects, molten metal, explosives, or hazardous materials, first slowly raise the load 100–200 mm off the ground to test brake reliability.
-
Maintenance and inspection lighting must operate at voltages below 36V.
-
All electrical equipment enclosures on bridge cranes must be grounded. If trolley rails are not welded to the main girder, grounding measures must be implemented. Grounding conductors may use galvanized flat iron with a cross-sectional area exceeding 75mm², bare copper wire of 10mm², or galvanized round steel exceeding 30mm². The operator's cab or crane body shall have more than two grounding points. The grounding resistance from any point on the crane to the power supply neutral point shall be less than 4Ω.
Directly state your needs and receive professional advice!
The project was delivered on time and landed safely
Improve efficiency
Avoiding risks