Advantages & Features

The Clean Single Girder Crane is specifically designed for environments with high cleanliness requirements. It features a simple overall structure for easy cleaning and maintenance. It adopts a dustproof design and operates smoothly and quietly. The material surface is specially treated to be corrosion-resistant and anti-pollution, making it suitable for use in clean workshops such as food, pharmaceutical, and electronics industries.

Applications

Clean cranes are specifically designed for industries with strict control requirements for the production environment, mainly applied in:

• Photovoltaic & Optoelectronics: Used for handling silicon wafers, cells, and modules. Anti-static design prevents micro-dust adsorption, reduces breakage rate, and improves the yield of photovoltaic products.
• Semiconductor Manufacturing: Wafer handling requires nanometer-level vibration resistance. Clean cranes effectively prevent particle contamination, ensuring the yield rate of chip manufacturing.
• Battery Production: Cranes for dust-free environments feature sealed structures and oil-free lubrication. Used in processes like electrode coating and cell stacking to eliminate metallic dust and ensure battery safety.
• Food Processing: Made of stainless steel with an easy-to-clean design. Used for raw material conveying and lifting filling equipment to avoid microbial contamination and ensure food safety.
• Laboratories: Handling精密 instruments requires vibration and interference resistance. The crane is equipped with a micron-level positioning system for installing electron microscopes and biological sample storage equipment. Anti-corrosion materials adapt to scenarios involving hazardous reagent handling.
• Pharmaceutical Manufacturing: Aseptic filling lines require cranes with high-temperature sterilization capabilities. Materials comply with GMP standards to prevent microbial contamination, meeting the production needs of vaccines and biological products.

The LD electric single-girder overhead crane has a lifting capacity of 1t-20t, a span of 7.5-28.5m, a working class of A3-A4, and an operating ambient temperature of -25℃~40℃. It offers two operation modes: ground control and cabin control. The operator’s cab is available in open and closed types, and can be installed on the left or right side according to the actual situation. The cab entrance can be on the side or end, allowing users to choose according to various needs.

The following are different types of single-girder cranes

The design of single-girder overhead cranes integrates technologies such as structural mechanics, mechanical transmission, and intelligent control. Weihua cranes adopt a modular design concept, with structural calculations based on ISO 8306 and GB/T 14405 standards. The main girder section is optimized through finite element analysis (FEA), reducing the crane’s deadweight by more than 30% while maintaining structural strength.

Advantages & Features

Structural Composition

A single-girder crane mainly consists of a main girder, end carriages, an electric hoist, a travel mechanism, and an electrical control system. The characteristics of each component are as follows:

• Main Girder: Uses a box-type or I-beam welded structure, lightweight design, strong load-bearing capacity.
• End Carriages: Connect the main girder to the track, equipped with high-strength wheels and buffer devices, ensuring smooth crane movement.
• Electric Hoist: Integrates the lifting motor, reducer, and wire rope/chain to achieve precise lifting, optional frequency control.
• Travel Mechanism: Composed of a motor, reducer, and wheels, drives the crane along the track, supports variable frequency speed regulation.
• Electrical Control System: Includes a control cabinet, remote control, or cabin, enabling safe operation and automation functions (such as limit protection).

Specifications

Applications

• Manufacturing Plants: Handling raw materials, machinery, and assembly parts.
• Warehouses and Logistics Centers: Loading/unloading goods, moving pallets.
• Steel and Metal Fabrication: Transporting coils, plates, and structural components.
• Automotive Industry: Engine and component installation.
• Power Plants and Construction: Equipment maintenance and material lifting.

Specifications

Advantages & Features

Applications

• Machinery Manufacturing Industry: Used for parts handling and assembly, effectively improving production efficiency and reducing the labor intensity of manual handling.
• Warehousing and Logistics Industry: For loading, unloading, stacking, and handling goods, particularly suitable for light and small cargo handling needs.
• Food Processing Industry: For raw material handling and finished product packaging. Its contamination-free and flexible operating characteristics meet the hygiene requirements of the food industry.
• Assembly Workshops and Laboratories: In assembly workshops and central laboratories, for precise positioning of material handling and component assembly, meeting the fine operational needs of the production process.
  
  Henan Weihua has previously served key national projects such as the South-to-North Water Diversion Project and the West-to-East Gas Pipeline Project.

Structural Composition

The New Chinese Style Electric Single Girder Crane mainly consists of end carriages, a main girder, a capacity plate, a corner trolley, and a power supply device. The features of each component are as follows:

• End Carriages: The end carriages connect the main girder at both ends, providing lateral stability and the load-bearing foundation for the crane. They are the core structure connecting the main girder to the rails, enabling the crane to travel along the rails.
• Main Girder: Responsible for bearing the weight of the hoisting mechanism, trolley, and other components, while also supporting the weight of the load during lifting, ensuring the stability and safety of lifting operations.
• Capacity Plate: An identification component located on the main girder or end carriage, used to display the rated capacity.
• Corner Trolley: A mobile trolley structure on the main girder that carries the hoisting mechanism.
• Power Supply Device: The system that provides electrical power to the crane, including components such as cables, conductor rails, and current collectors. It meets the power demands for main girder travel, trolley movement, and hoisting mechanism operations, serving as the “power guarantee” for normal equipment operation.

Advantages & Features

Specifications

Applications

• Machinery Manufacturing & Processing Workshops: Handling raw materials, machinery, and assembly parts.
• Warehouses and Logistics Centers: Loading/unloading goods, moving pallets.
• Power Plants and Construction: Equipment maintenance and material lifting.

It is typically used in conjunction with a metallurgical electric hoist, ensuring reliability and safety in harsh industrial environments such as high temperature and high humidity.

Structural Composition

The single-girder crane mainly consists of a main girder, end carriages, an electric hoist, a travel mechanism, and an electrical control system. The characteristics of each component are as follows:

• Main Girder: Adopts a box-type or I-beam welded structure, lightweight design, strong load-bearing capacity.
• End Carriages: Connect the main girder to the track, equipped with high-strength wheels and buffer devices for smooth crane movement.
• Electric Hoist: Commonly uses a YH metallurgical electric hoist, featuring multiple protection functions such as dual brakes, dual limit switches, and heat shields.
• Travel Mechanism: Composed of a motor, reducer, and wheels, it drives the crane along the track and supports variable frequency speed regulation.
• Electrical Control System: Includes a control cabinet, remote controller, or operator’s cab, enabling safe operation and automation functions (such as limit protection).

Advantages & Features

Specifications

Applications

• Metal Smelting & Foundry: Used in metal smelting and foundry workshops for lifting molten metals such as molten steel and molten iron.
• Hot Solid Metal Handling: Used for lifting hot solid metals, such as metal billets or workpieces just after rolling or forging.
• Molten Non-Metallic Materials: Can also be used for lifting molten non-metallic materials.

Weihua LB explosion-proof single-girder crane is a lifting equipment specially designed for flammable and explosive environments. Based on a conventional electric single-girder crane, it applies special explosion-proof treatment to the electrical system and components that may generate sparks, thereby significantly reducing the risk of operation in hazardous environments.

Structural Composition

The LB explosion-proof electric single-girder crane mainly consists of an explosion-proof bridge, explosion-proof hoisting trolley, explosion-proof travel mechanism, explosion-proof electrical system, and safety protection devices.

• Explosion-proof Bridge: Adopts a box-type structure for the main girder and end carriages, ensuring overall rigidity and stability.
• Explosion-proof Hoisting Trolley and Travel Mechanism: The hoisting trolley is used in conjunction with an explosion-proof electric hoist. The electrical components of these explosion-proof hoists (e.g., HB(BCD), HBS(BMD) types), such as the lifting and traveling motors and brakes, are flameproof treated. Additionally, the tread and flange parts of the trolley and crane wheels are manufactured using stainless steel or other non-sparking materials to prevent sparks from friction or impact.
• Explosion-proof Electrical System: This is the core for achieving the explosion-proof function. All electrical equipment, such as explosion-proof switches, explosion-proof limit switches, explosion-proof power inlets, explosion-proof operating devices (ground push button or remote control), and explosion-proof lighting fixtures, comply with explosion-proof standards. Power supply for the trolley and crane typically uses flexible cable power supply. Small components like the small rollers on the cable trolley and the bumper wheels of limit switches are often made of copper material to further prevent spark generation.
• Safety Protection Devices: Include explosion-proof limit switches (e.g., hoisting limit, travel limit), and overload limiters, etc. These devices themselves also possess explosion-proof characteristics.

Advantages & Features

Specifications

Applications

Weihua LB explosion-proof electric single-girder cranes are widely used in the following environments containing flammable and explosive gases, dust, or mixtures:

• Chemical Industry: Chemical plants, warehouses, stockyards, etc.
• Petroleum & Natural Gas: Extraction, refining, natural gas processing, and storage/transportation sites.
• Other Explosive Environments: Such as locations with combustible dust like flour mills, cement plants, etc.

• Core Positioning: It is designed and manufactured based on the LX型 Electric Single Girder Underslung Crane, strictly following explosion-proof standards such as GB3836.1-2000 “Electrical Apparatus for Explosive Gas Atmospheres – Part 1: General Requirements” and GB3836.2-2000 “Electrical Apparatus for Explosive Gas Atmospheres – Part 2: Flameproof Enclosures “d””. The entire crane possesses reliable explosion-proof characteristics.

• Design Features: This crane features reasonable structure, attractive appearance, and strong explosion-proof performance. The operating speed of each mechanism is typically controlled within 20 m/min, which helps reduce potential risks associated with high-speed operation.

• Typical Configuration: It is often used in conjunction with HB(BCD), HBS(BMD) type explosion-proof electric hoists. The main control method is ground control (wired or remote control).

Structural Composition

Weihua LXB type explosion-proof crane mainly consists of the following parts:

• Bridge Structure: 1. Main Girder and End Carriage: The structure of its main load-bearing components (such as the main girder and end carriage) is basically consistent with the LX型 Electric Single Girder Underslung Crane, meeting basic load-bearing and operational requirements. 2. Track System: The crane operates on I-beam tracks, suitable for suspended installation.
• Explosion-Proof Electrical System (Core Difference): 1. Overall Explosion-Proof Design: This is the core of the LXB type. All electrical equipment, including the power supply system for the crane, adopts an explosion-proof design. 2. Crane Power Supply: The crane power often uses soft cable power supply. 3. Explosion-Proof Hoist: The hoisting mechanism is equipped with a specialized explosion-proof electric hoist.
• Explosion-Proof Travel Mechanism: 1. Explosion-Proof Motor: The crane travel, trolley travel, and hoisting mechanisms all use explosion-proof motors. 2. Explosion-Proof Wheels: The tread and flanges of the wheels are typically made of stainless steel or other non-sparking materials to prevent sparks from friction and impact. 3. Explosion-Proof Accessories: Components such as the rollers on the cable trolley and the striker of the limit switch are often made of copper alloy or other materials that are not prone to sparking and can dissipate static electricity.

Advantages & Features

The advantages of Weihua LXB Explosion-Proof Electric Single Girder Crane are mainly reflected in the following aspects:

Specifications

Applications

Weihua LB explosion-proof electric single girder crane is widely used in the following environments with flammable and explosive gases, dust, or mixtures:

• Chemical Industry: Chemical plants, warehouses, stockyards, etc.
• Petroleum, Natural Gas: Extraction, refining, natural gas processing and storage/transportation sites.
• Other Explosive Environments: Places with combustible dust such as flour mills, cement plants, etc.

Structural Composition

The LDZ electric grab crane is mainly composed of a single girder, end carriages, a lifting trolley, a grab, hoisting and travel mechanisms, and an electrical control system. The characteristics of each component are as follows:

• Bridge Structure: This is the main body of the crane, typically composed of a single main girder and end carriages, forming a bridge-like structure. The main girder adopts a rational structural design to ensure good rigidity of the entire machine.
• Lifting Trolley: The trolley is the operating mechanism of the crane, carrying the grab below it. The trolley can move longitudinally along the main girder, enabling material handling across the span.
• Grab: This is the core component that distinguishes the LDZ model from ordinary hook cranes. It can be equipped with mechanical, electric, or hydraulic grabs, selecting the appropriate type based on the characteristics of the material to be handled (such as particle size and density) for grabbing bulk materials.
• Hoisting and Travel Mechanisms:
  • Hoisting Mechanism: Responsible for the vertical lifting and lowering of the grab. LDZ cranes are typically equipped with two hoisting motors (for example, for a 3-ton model, using ZD141-4 type with 4.5kw power) to control the opening/closing and lifting of the grab separately.
  • Travel Mechanisms: Includes the crane travel mechanism that moves the entire crane along the workshop rails, and the trolley travel mechanism that moves the grab trolley along the main girder. The crane travel speed varies depending on the operation mode, approximately 30 m/min for floor control and 75 m/min for cabin control.
• Electrical Control System: The control system is centralized in the operator’s cabin or operated via floor push buttons / remote control. It commands all crane movements, including crane and trolley travel, and grab lifting and closing. The electrical system ensures normal operation of the crane under conditions of ambient temperature -20°C to 40°C and relative humidity not exceeding 85%.

Advantages & Features

Specifications

Applications

Weihua LDZ electric grab cranes are mainly suitable for the following occasions and fields:

• Main Application Scenarios: Widely used in locations such as factories, warehouses, and stockyards requiring the grabbing and handling of bulk materials.
• Building Materials & Construction Industry: Used for grabbing and handling construction materials like sand, gravel, cement, and slag.
• Energy & Mining Industry: Used in places such as coal mines and power plants for grabbing bulk materials like coal and ore.
• Grain & Agricultural Product Processing: Can be used in grain warehouses or processing plants to grab agricultural products such as grain and feed.
• Manufacturing & Maintenance Workshops: Used in machinery manufacturing and repair workshops for handling bulk raw materials or scrap.

Note: The LDZ electric grab crane is prohibited from use in environments with flammable, explosive, or corrosive media.

Structural Composition

The LDP electric single girder crane mainly consists of end carriages, a main girder, a capacity plate, a trolley with angle, and a power supply device. The features of each component are as follows:

• End Carriages: The end carriages connect to the main girder at both ends, providing lateral stability and a load-bearing foundation for the crane. They are the core structure connecting the main girder to the rails, enabling the crane to travel along the rails.
• Main Girder: Responsible for bearing the weight of components such as the hoisting mechanism and trolley, while also supporting the weight of the load during lifting, ensuring the stability and safety of lifting operations.
• Capacity Plate: An identification component located on the main girder or end carriage, used to display the rated capacity.
• Trolley with Angle: A mobile trolley structure on the main girder that carries the hoisting mechanism.
• Power Supply Device: The system that provides electrical power to the crane, including components such as cables, conductor rails, and current collectors. It ensures the power requirements for operations like main girder travel, trolley movement, and hoisting mechanism work, serving as the “power supply guarantee” for the normal operation of the equipment.

Advantages & Features

Specifications

Applications

• Machinery Manufacturing & Processing Workshops: Handling raw materials, machinery, and assembly parts.
• Warehouses and Logistics Centers: Loading/unloading goods, moving pallets.
• Power Plants and Construction: Equipment maintenance and material lifting.

This crane has a lifting capacity of 1–16t, a span of 7.5–25.5m, a working class of A3–A5, and a lifting height of 6–30m. It is equipped with a European-style wire rope electric hoist and a three-in-one frequency drive, ensuring smooth operation, low noise, and precise positioning. It also features multiple protections such as overload, overcurrent, and undervoltage.

Specifications

The HD single-girder overhead crane is renowned for its lightness, modularity, and high performance, and is widely used in various industrial scenarios such as factories, warehouses, and assembly lines. We can provide customized design services based on actual working conditions, including lifting requirements, working height, span size, operating environment, and other parameters. This includes the selection of the main girder structure, configuration of the electric hoist, control modes (e.g., frequency control, wireless remote control), and safety protection systems.

Leveraging extensive engineering experience and professional expertise, Weihua is committed to creating efficient, safe, and energy-saving lifting solutions. If you have specific project requirements, please feel free to contact us for a customized solution and quotation.

Advantages & Features

Applications

• Construction Industry: Used for lifting and loading operations on large structures, such as bridges and high-rise buildings.
• Paper Industry: Suitable for lifting materials like timber and paper rolls.
• Machinery Manufacturing: Responsible for material assembly on production lines and the transport of heavy equipment and parts.
• Steel Industry: Efficiently handles steel plates and other processes, such as pouring molten steel.
• Petrochemical Industry: Capable of lifting large storage tanks and pipelines, as well as loading/unloading raw materials and products.
• Civil Aviation Industry: Also suitable for lifting and moving aircraft parts to ensure production efficiency and safety.