Three-Trolley Electric Hoist Bridge Crane Henan Mine Crane Factory supply
Three-Trolley Electric Hoist Bridge Crane Henan Mine Crane Factory supply
Three-Trolley Electric Hoist Bridge Crane Henan Mine Crane Factory supply

Three-Trolley Electric Hoist Bridge Crane

Henan Mine Crane Three-Trolley Electric Hoist Bridge Crane is a special lifting equipment specially designed for the global paper industry, machining workshop, assembly workshop, working level A5-A6, can complete the large-scale workpiece handling, equipment overhaul, precise lifting, multi-station cooperative work in the whole process of the task, suitable for the paper mill humid and dusty, limited space in the workshop, medium and high-frequency continuous operation of the working condition.
Lifting Capacity 1t-32t or Customized
Crane Span: 7.5 - 31.5m or Customized
Lifting Height 6m-30m or Customized
Working Class A5 - A6 or Customized
Power Supply 220-690V, 50/60Hz
Hoisting Speed 0.8/5 - 8/16m/min
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Parameters of Three-Trolley Electric Hoist Bridge Crane Manufactured by Henan Mine Crane

China's Premier Crane Manufacturer, Driving High-Quality Development in the Crane Industry for 24 Years
Parameter Specification Unit Remarks
Rated Lifting Capacity 1 – 32 t Customizable
Span 7.5 – 31.5 m Adjustable according to workshop
Lifting Height 6 – 30 m Customizable
Working Class A5 – A6 Medium-heavy duty
Hoisting Speed 0.8/5 – 8/16 m/min Dual-speed & frequency conversion
Trolley Travel Speed 5 – 25 m/min Stepless speed regulation
Crane Travel Speed 10 – 30 m/min Frequency conversion control
Hoist Arrangement C-Type Layout Low-headroom design
Protection Level IP54 Dust-proof & splash-proof
Power Supply 220-690V, 50/60Hz V Customizable for global market
Material High-Strength Q355B Steel Ultrasonic welding testing
Certification ISO, CE, FEM Direct export without modification
Control Mode Remote Control + Cabin Control Optional wireless remote
Type Test Code KSSLS Electric Hoist Bridge Crane
Application Paper Mill, Workshop, Maintenance Mainly for paper industry

Product Introduction of Henan Mine Crane Three-Trolley Electric Hoist Bridge Crane

Henan Mine Crane Three-Trolley Electric Hoist Bridge Crane is a special lifting equipment specially designed for the global paper industry, machining workshop, assembly workshop, working level A5-A6, can complete the large-scale workpiece handling, equipment overhaul, precise lifting, multi-station cooperative work in the whole process of the task, suitable for the paper mill humid and dusty, limited space in the workshop, medium and high-frequency continuous operation of the working condition.

1. Product core positioning and design standards

Henan Mine Crane Three-Trolley Electric Hoist Bridge Crane core positioning: to provide efficient, accurate, energy-saving, space-saving lifting and handling and equipment maintenance solutions for the global paper industry, machining, assembly, warehousing and logistics.

2. Core structure and functional design

  1. Three-trolley Cooperative Operation System: Adopting three-trolley independent/linkage dual control design, it can synchronously complete multi-station lifting and long-size workpiece transfer, and the operation efficiency can be increased by more than 60% compared with the traditional single-trolley overhead crane, which is suitable for the efficient handling of large paper rolls in paper mills and heavy workpieces in mechanical workshops, and it is not necessary to collaborate with multiple equipments, which can greatly shorten the operation cycle and reduce the cost of labor cooperation.
  2. Low headroom compact structure: Innovative hoist C-type arrangement + square welding cover design, greatly reducing the headroom height and limit size of the equipment, the same lifting height can reduce the height of the factory building 300-800mm, wheel pressure reduced by 10%-35%, reducing the structural load-bearing requirements of the factory building, direct savings in civil engineering investment, to match the limited space of the old workshop and the new factory building, taking into account the practicality and economy.
  3. Frequency conversion speed control and precise positioning system: equipped with dual-speed motor and frequency conversion stepless speed control technology, light load high speed, heavy load slow speed, low-speed positioning accuracy up to ±5mm, running smoothly without impact, avoiding collision damage to the workpiece, suitable for precision equipment overhaul, workpiece precision assembly and other scenarios, to enhance the safety and stability of the operation and reduce the cost of workpiece wear and tear.
  4. Modularization and energy-saving design: the use of high-strength Q355B steel modularization, the machine weight reduction of 15%-30%, with a large diameter reel to reduce the wear and tear of the wire rope, energy consumption is significantly reduced compared with traditional equipment; the core components of the hardened gear reducer, forged wheels, ultrasonic welding detection, no welding hazards, longer service life, lower maintenance costs.
  5. Intelligent Internet of Things (IoT) expansion function: Supporting IoT remote monitoring, fault self-diagnosis, data visualization and intelligent operation and maintenance, overseas customers can check the operating parameters of the equipment in real time through cell phones or computers, and enjoy 24/7 remote technical support without on-site guarding, which significantly reduces the operation and maintenance cost and response time, and improves the operating efficiency of the equipment.
  6. Full-dimensional protection and global adaptability: the whole machine protection level reaches IP54, dust and splash-proof, key components are sealed and anticorrosive treatment, suitable for humid and dusty working conditions in paper mills; the power supply can be customized to 220V-690V/50-60Hz, in line with the global standards of national power grids, and has passed the ISO, CE, and FEM certifications, so that it can be exported without modification, and is suitable for the workshop environments and industry norms of different regions around the world. 3. Core Product Advantages
    Three-Trolley Electric Hoist Bridge Crane Henan Mine Crane Factory supply

3. Core product advantages

  1. High-efficiency cooperative operation: three trolleys can operate independently or linkage, and can complete 25-35 workpieces lifting/transferring operations per hour, which is 60% higher than the efficiency of traditional single-trolley equipment, and can directly complete multi-station synchronous operations without the need for multiple equipment handover, which can significantly shorten the turnaround time of the workpieces and enhance the workshop production efficiency.
  2. Extreme space utilization: low headroom C-type layout + lightweight structure, significantly reduce the cost of plant construction and renovation, wheel pressure reduced by 10% -35%, without reinforcing the structure of the plant, suitable for all kinds of limited space workshop scenarios, especially suitable for upgrading the old workshop, without the need to take up additional space.
  3. Accurate and stable, safe and reliable: double-speed motor + frequency conversion speed control, positioning accuracy of ± 5mm, running smoothly without impact, with multiple safety protection, to eliminate collision, overload and other safety hazards, the accident rate tends to be close to zero, to meet the high standard of precision equipment overhaul, fragile workpiece lifting and other operational needs.
  4. Energy-saving and cost-effective: modular lightweight design + energy optimization configuration, energy consumption is reduced by more than 20% compared with traditional equipment; designed service life of more than 18 years, the annual maintenance cost is only 2%-3% of the total price of the equipment, the price of the international first-tier brands is lower by 20%-30%, which significantly reduces the customer’s full life cycle operating costs.
  5. Strong global adaptability: support CE, ISO, FEM and other international certifications, power supply specifications, control methods can be customized globally, without modification can be directly exported to more than 60 countries and regions around the world, adapted to different regions of the workshop operating norms and power grid standards, export customs clearance assistance throughout the process.
  6. Convenient maintenance and worry-free after-sales service: the core components adopt international common specifications and are easy to purchase and replace; the modularized design eliminates the need to dismantle the whole machine and makes daily maintenance simple, which can be accomplished by the operators after simple training; the global layout of service outlets and the 95% stocking rate of the core spare parts can be dispatched to all parts of the world within 72 hours.

4. Global Adaptation and Application Scenarios

  • Application Scenarios: Global paper mills, machining workshops, assembly workshops, warehousing and logistics centers, power equipment maintenance workshops, textile/food workshops, used for large paper rolls handling, equipment installation and maintenance, heavy-duty workpiece transfer, precision assembly, material lifting, etc., can also be adapted to prefabricated components, large molds and other special workpiece transfer needs.
  • Standardization: Support CE, ISO, FEM, IEC and other international certifications, assist customers with export customs clearance procedures, provide a full set of technical data (installation drawings, operation manuals, maintenance manuals) in English/Spanish/Arabic/Russian to meet the industry norms and equipment access requirements of different countries and regions around the world.
  • Environmental adaptation: humidity resistance, dust resistance, adapt to a wide range of temperature environments, stable operation in extreme environments ranging from -25℃ to +40℃; paper mills, chemical workshops can be upgraded with additional anticorrosion configurations, adapting to the more demanding humid and dusty environments; high-altitude and cold regions can be customized with low-temperature start-up configurations to ensure stable operation in all scenarios.

5. Global exclusive supporting services

  • Provide English/Spanish/Arabic/Russian full set of technical data, installation drawings, operation manuals, maintenance manuals, in line with international industry standards, to facilitate global customers for equipment access and operator training, to help quickly get started.
  • 7×24 hours global remote video installation and commissioning guidance, equipped with professional three trolley electric hoist overhead crane technical team, according to customer demand arrangements for door-to-door installation and commissioning, operator systematic training, cost transparency can be negotiated, the whole one-on-one service.
  • Germany, the United States, Malaysia, the United Arab Emirates, South Africa and other core regions of the world with spare parts agents, motors, gearboxes, wire ropes, electronic control modules and other common wearing parts factory supply, within 72 hours can be shipped to the world’s neighboring countries / regions, to protect the continuous operation of the equipment.
  • Open 7×24 hours multi-language after-sales hotline, professional Three-Trolley Electric Hoist Bridge Crane technical engineers, to provide remote troubleshooting, maintenance guidance, control system debugging, intelligent function upgrades, and other full-cycle solutions, and complex faults can be arranged for overseas network personnel to deal with on-site.

What Can Henan Mine Crane Three-Trolley Electric Hoist Bridge Crane Offer You?

Value Category Specific Benefits Description
Space Utilization Low-Headroom & Compact Design C-type hoist layout + square welded cover, reduce headroom and limit size, lower workshop height and foundation cost
Operation Efficiency Three-Trolley Collaborative Work Three trolleys can work independently or jointly, improve handling efficiency by 60%+, suitable for large-size workpiece handling
Precision & Stability Dual-Speed + Frequency Conversion Dual-speed motor + variable frequency control, high-speed lifting & low-speed precise positioning, smooth operation without impact
Durability & Energy Saving High-Strength & Lightweight Structure Modular high-strength steel, self-weight reduced by 15-30%, long service life, lower energy consumption
Intelligent Operation IoT Remote Monitoring & O&M Expand IoT function, remote monitoring, fault diagnosis, intelligent operation and maintenance
Global Adaptability International Standard & Certification Comply with FEM/IEC standards, ISO/CE certified, customizable power supply, direct export worldwide
Maintenance Convenience Easy Maintenance & Long Lifespan Hardened gear reducer, steel reel, forged wheels, less wearing parts, low maintenance cost
Load Adaptability Wide Lifting Capacity Range Suitable for paper mill roll handling, equipment maintenance, general workshop material handling
Safety Performance Stable & Reliable Operation Multiple safety protections, anti-sway, overload protection, ensure operation safety
Cost Reduction Lower Workshop & Operation Cost Reduce wheel pressure by 10-35%, lower workshop structure requirement, save total investment
Scenario Adaptation Multi-Industry Application Mainly for paper industry, also for machinery, logistics, power, textile and food workshops

Three-Trolley Electric Hoist Bridge Crane Parameter Table

Capacity T 5
Span m 7.5 10.5 13.5 16.5 19.5 22.5 25.5
Lifting height m 6/9/12/18/24/30
Lifting speed m/min 8or8(8/0.8)
Trolley travelling speed m/min 20
Crane travelling speed m/min 20
Total weight kg 5230 6400 7450 8600 10560 12350 14850
Max. Wheel load KN 39 43 48 53 59 62 71
Rail recommended Model 38kg/m
Total motor power kw 8.3
Main dimension (mm) Span(m) 7.5 10.5 13.5 16.5 19.5 22.5 25.5
Rail top to crane top H 1350 1550
Rail top to hook center H4 385 540
Crane base distance W 2700-3100 3200-3600 3800
Crane width B 3200-3900 3700-4200 5300
Trolley rail distance K 1400-1800
Hook left limitation S1 1200 1200
Hook right limitation S2 1200 1200

Capacity

T

20/5

Span

m

7.5

10.5

13.5

16.5

19.5

22.5

25.5

Lifting height

m

9/12/18/24

Lifting speed

m/min

3.5(3.5/0.35) or8(8/0.8)

Trolley travelling speed

m/min

20

Crane travelling speed

m/min

20

Total weight

kg

10500

11500

13640

15980

17700

20300

22920

Max. Wheel load

KN

118

129

135

148

156

164

169

Rail recommended

Model

38kg/m

Total motor power

kw

19.3

Main dimension (mm)

Span(m)

7.5

10.5

13.5

16.5

19.5

22.5

25.5

Rail top to crane top

H

1790

Rail top to hook center

H4

-350

Crane base distance

W

3750-4500

Crane width

B

4632-5982

Trolley rail distance

K

1600-2550

Hook left limitation

S1

1100

Hook right limitation

S2

1100

Capacity

T

32/10

Span

m

7.5

10.5

13.5

16.5

19.5

22.5

25.5

Lifting height

m

9/12/16/24

Lifting speed

m/min

3(3/0.3) or7(7/0.7)

Trolley travelling speed

m/min

20

Crane travelling speed

m/min

20

Total weight

kg

12530

14660

16360

18870

21650

24260

27060

Max. Wheel load

KN

167

184

196

206

215

224

233

Rail recommended

Model

43kg/m

Total motor power

kw

20

Main dimension (mm)

Span(m)

7.5

10.5

13.5

16.5

19.5

22.5

25.5

Rail top to crane top

H

1900

Rail top to hook center

H4

-700

Crane base distance

W

1600-2500

Crane width

B

5070-5960

5572-6222

Trolley rail distance

K

1600-2550

Hook left limitation

S1

1100

Hook right limitation

S2

1600

Advantage display

Product Advantages Overview

Large-Tonnage Bearing

Rated lifting capacity ranges from 5T to 100T, and larger tonnages can be customized for special needs. Adopting high-manganese steel main beam and reinforced

Intelligent Precision Control

quipped with a PLC intelligent control system, supporting millimeter-level positioning and automatic loading/unloading. Lifting and running speeds can be flexibly adjusted, and

Multiple Safety Protections

Integrates multiple safety mechanisms such as overload protection, limit protection, anti-fall protection and emergency braking, equipped with high-definition monitoring and fault

Longer Service Life

Core components are made of high-quality materials such as wear-resistant alloy and corrosion-resistant steel, reinforced by heat treatment process. The electrical system

What industries are the Three-Trolley Electric Hoist Bridge Crane suitable for?

China's Premier Crane Manufacturer, Driving High-Quality Development in the Crane Industry for 24 Years
Heavy Equipment Manufacturing Workshop
The three-trolley overhead crane is equipped with three independent running trolleys, which can work individually at a single point or be lifted synchronously by multiple trolleys, which is suitable for the smooth lifting and shifting of large heavy equipment and heavy components.
Steel Structure Processing Plant
The three-trolley overhead crane is designed for the transfer of extra-long steel beams, steel columns, and shaped steel components, with multiple trolleys to disperse the force, avoiding the bending and deformation of long materials, and meeting the demand for processing and handling of large-span workpieces.
Complete set of equipment assembly workshop
The three-trolley overhead crane operates at multiple stations simultaneously without interfering with each other, and different areas can independently lift accessories, semi-finished products and complete machine parts, which effectively improves the assembly efficiency of the workshop assembly line.
Large mold stamping workshop
The three-trolley overhead crane can not only carry small workpieces with a single trolley, but also lift large molds with two or three trolleys, with flexible disassembling and transferring and accurate positioning.
Wind power and hydropower equipment production base
The three-trolley overhead crane is suitable for wind turbine fittings, hydropower units and other long and wide shaped parts, and the multi-vehicle coordinated load sharing solves the problem of lifting non-standard heavy components.
Heavy Equipment Maintenance Workshop
Three trolleys overhead cranes are used for overhauling, dismantling and installing large machinery and equipment in the factory, and the light and heavy materials are lifted in different areas, and the three trolleys are flexibly deployed to adapt to the complex maintenance working conditions.
Mechanical parts processing plant
The three overhead cranes can independently lift rough parts, processed parts and finished products in different areas under the scene of multi-process cross operation, which can run efficiently and save waiting time.
Metallurgical supporting processing section
The three-trolley overhead crane can be adapted to the high dust and continuous operation environment in the workshop, and is durable and resistant to construction. It can complete the high-frequency transfer of metallurgical fittings, heavy blanks and auxiliary consumables.
Large industrial finished goods warehouse
Three overhead cranes for indoor heavy goods partition stacking, in and out of the warehouse handling, three trolleys to cover the entire operating range, a clear division of labor, and significantly improve the efficiency of the warehouse turnover.
Three-Trolley Electric Hoist Bridge Crane Henan Mine Crane Factory supply

How to Choose the Best Crane Manufacturer in China

Henan Mine Crane Co., Ltd. is a professional manufacturer and service provider of cranes and material handling products. Integrating R&D, design, manufacturing, sales, and service, we deliver comprehensive solutions and full-lifecycle support to our customers.
1
Clarify Your Crane Needs
Thoroughly understand your lifting requirements (load details, frequency, and workspace environment) before approaching crane manufacturers.
2
Determine Crane Service Class
Calculate the required crane service class based on your operational intensity to ensure optimal performance and longevity.
3
Explore Crane Supplier Custom Features:
Investigate available customization options and special features to enhance safety, efficiency, and precision for your specific application.
4
Assess Crane Factory Engineering Capability
Evaluate the manufacturer's engineering strength to ensure they can design a suitable solution tailored to your needs.
5
Verify Quality & Compliance of Crane Company
Check the crane manufacturer's manufacturing quality, certifications, and compliance with international standards and your local safety regulations.
6
Ensure Support & References
Confirm 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

Henan Mine Crane Factory is a premier provider of integrated crane and material handling solutions, covering R&D, design, manufacturing, sales, and service for end-to-end support.

Experienced company

Established in 2002, Henan Mine Crane Factory is a high-tech crane enterprise. Using advanced global design and manufacturing tech, we craft top-quality single/double-beam cranes and electric hoists.
Henan Mine Crane Factory Team

Professional team & equipment

Our 1.62 million ㎡ factory has 3,500+ staff, 200 senior engineers, and 428+ global sales/service points. With 2,000+ processing machines handling 20+ processes, we ensure excellence.

Productive capacity

The annual output of cranes is over 80,000 units. The company produces and sells more than 11000 double beam and gantry cranes annually, More than 73000 single beam cranes, and More than 100000 sets (sets) of single and double beam electric hoists and accessories.
Henan Mine Crane Factory

Customized design services

We know the right crane is key. Our engineers partner with clients to design and build cranes tailored to specific needs, ensuring optimal performance.

Why Our Cranes Earn Customers' Trust

Henan Mine Crane Co., Ltd. has a strong technical team with over 10 top experts and 200+ mid-to-senior engineers. They've obtained over 700 national patents and provincial-level tech achievements, with over 670 authorized patents. Henan Mine Crane Factory led/participated in over 100 standard formulations/revisions, won the China Standard Innovation Contribution Award, and is a key member of multiple lifting machinery standardization committees. Dr. Xu Lei serves as Deputy Leader of the ISO/TC96 Domestic Technical Counterpart Expert Working Group.
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The services we provide

China's Premier Crane Manufacturer, Driving High-Quality Development in the Crane Industry for 24 Years

Free customization scheme

The professional engineer team communicates in depth to understand needs, and provides one-stop customized solutions including 3D model design, technical parameter calculation

Regular Maintenance Reminder

Establish customer equipment files, and regularly send maintenance reminders based on equipment usage time and operation intensity. Provide detailed maintenance manuals and video tutorials

Technical support consultation

Provide 7×12-hour online technical consultation service. Senior consultants answer questions in real time regarding product selection, parameter matching, installation specifications

Free customization scheme

The professional engineer team communicates in depth to understand needs, and provides one-stop customized solutions including 3D model design, technical parameter calculation
Get A Free Quote Now

Our Patents and Certifications

China's Premier Crane Manufacturer, Driving High-Quality Development in the Crane Industry for 24 Years

Customer Testimonials & Top Choices

China's Premier Crane Manufacturer, Driving High-Quality Development in the Crane Industry for 24 Years
stated: "We've partnered with you for 15 years. From our first factory in the UAE to our new facility now, we consistently choose your equipment because we trust your reliability and service. The single-girder cranes at the new plant are precisely positioned, and the synthetic ropes don't contaminate our cleanroom environment. You always respond immediately whenever we have a need."
Group Director Christiano
Italian LTC Group (Global Magnetic Core Manufacturer)
stated: Your customized tower crane passed all North American safety certifications. Its construction is solid. We recommended it to local builders and received excellent feedback. We're placing an additional order for 20 units to cover construction projects in Western North America.“
Founder Peter
North America P&J Arcomet (Leading North American Tower Crane Service Provider)
Collaborative Equipment: 8 high-precision positioning single-girder cranes (positioning accuracy ±2mm) Customer Feedback (Production Line Manager Jochen): “Our vehicle assembly line demands extremely high component positioning accuracy. Your cranes integrate seamlessly with our robotic systems, significantly boosting assembly efficiency. German engineers gave the equipment a big thumbs-up for its stability and precision.”
(Production Line Manager Jochen)
BMW Leipzig Plant, Germany

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Your Top Concerns About Henan Mine Crane manufactured Three-Trolley Electric Hoist Bridge Crane and Answers

China's Premier Crane Manufacturer, Driving High-Quality Development in the Crane Industry for 24 Years
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 are the core advantages of the three-trolley design over traditional single-trolley bridge machines?
The three trolleys can work independently/linked, can synchronize the handling of long-sized workpieces, increase the operating efficiency by more than 60%, and support the synchronous operation of multiple work stations.
How much can the low headroom design save us in terms of plant cost?
The C-shaped layout can reduce the headroom height by 300-800mm, the weight of the whole machine can be reduced by 15%-30%, and the wheel pressure can be reduced by 10%-35%, which greatly reduces the cost of plant construction.
Is the machine suitable for the humid and dusty environment of the paper industry?
It is fully compatible with IP54 protection level, dust and splash-proof, and the key components are sealed and anticorrosive treatment, which can be operated stably for a long period of time.
How much lifting accuracy can be achieved with double-speed + frequency conversion speed control?
Low-speed positioning accuracy of ±5mm, running smoothly without shaking, to meet the needs of precision assembly and equipment maintenance.
Can it realize IOT remote monitoring and how to operate and maintain overseas?
Remote monitoring and fault diagnosis are supported. Overseas customers can enjoy 7×24 hours remote technical support to reduce operation and maintenance costs.
Has the equipment passed CE/ISO certification and can it be directly exported to the EU?
Yes. With ISO, CE and FEM certifications, the equipment can be directly exported to countries all over the world without modification.
Can we customize the parameters according to the size and load of our workshop?
Yes. Modular design, customized lifting capacity, span, lifting height, power supply and control mode.
Is it difficult to maintain the equipment and how long do the core components last?
Maintenance is simple, the core components have a life span of 8-10 years, and only routine lubrication is required, so maintenance costs are extremely low.
Will there be any collision or interference when the three trolleys are running at the same time?
No. Equipped with anti-collision limit and synchronization control program, automatically maintain a safe distance to eliminate collision interference.
What is the applicable working environment temperature of the equipment?
Standard working conditions -25℃~+40℃, can be customized high and low temperature adapted version, to meet the use of different regions of the world.
In addition to the paper industry, what other scenarios can be adapted?
It can also be used for material lifting and equipment maintenance in machining, assembly, storage and logistics, electric power overhaul, textile, food and other workshops.

Operating Manual for Three-Trolley Electric Hoist Bridge Crane

China's Premier Crane Manufacturer, Driving High-Quality Development in the Crane Industry for 24 Years
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.

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    Henan Mine's Double-girder Electric Hoist Bridge Crane, renowned for their high lifting capacity, exceptional stability, and extensive operational range, are widely utilized across diverse industrial production and material handling scenarios. They serve as core lifting equipment for industrial and mining enterprises, logistics warehouses, and other sectors.

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