A 12-ton double girder cleanroom overhead crane is a specialized lifting equipment designed to operate in environments that require stringent cleanliness standards, such as pharmaceutical manufacturing, semiconductor fabrication, and medical device production facilities. These cranes are engineered to minimize particulate generation and contamination, ensuring that the products and processes within the cleanroom remain uncontaminated.
Design and Components
A 12t double girder cleanroom overhead crane typically includes the following components:
1. Double Girder Structure: The crane features dual main beams, or girders, which provide enhanced stability and load capacity compared to single girder cranes. This design is necessary for handling heavier loads up to 12 tons.
2. Cleanroom Trolley and Hoist: The trolley and hoist are enclosed and sealed to prevent dust and other particles from being released into the cleanroom environment. Specialized coatings and finishes on the crane components help prevent corrosion and particle shedding.
3. Smooth Running Motors: Motors and gearboxes are designed for smooth and quiet operation to minimize vibration and noise, which can generate particles.
4. Sealed Electrical Enclosures: All electrical components are housed in sealed enclosures to prevent dust accumulation and to maintain the cleanroom's air quality.
5. Lubrication-Free Components: Where possible, the crane incorporates lubrication-free bearings and components to avoid oil and grease contamination.
6. Anti-Dust Seals: Seals are used around moving parts to prevent the ingress of contaminants and to keep internal components free from dust.
7. Cleanroom Controls: The crane is equipped with a control system that is designed to operate smoothly and accurately, minimizing unnecessary movements that could generate particles.
8. Surface Treatments: The entire structure is treated with finishes that are non-particulate generating and easy to clean.
Features
• High Load Capacity: Capable of lifting up to 12 tons, this crane is suited for heavy-duty applications in cleanroom environments.
• Minimal Particulate Generation: Every aspect of the crane is designed to minimize the creation and spread of particles.
• Easy Cleaning: The design allows for quick and thorough cleaning to maintain cleanroom standards.
• Smooth and Precise Motion: The crane operates with minimal vibrations and jerks to prevent disturbance of sensitive processes.
• Customizable: Can be tailored to specific cleanroom requirements, including class ratings and load capacities.
Applications
These cranes are used in various industries that require cleanroom environments:
1. Pharmaceuticals: Used in the production and packaging of medicines and vaccines.
2. Semiconductors: Essential in the fabrication of computer chips and other electronic components.
3. Biotechnology: Required in the development of biopharmaceuticals and genetic engineering.
4. Medical Devices: Used in the manufacture of implants, surgical instruments, and diagnostic equipment.
5. Aerospace: Important in the assembly of aircraft components and satellite technology.
6. Nanotechnology: Necessary in research and production involving nanoscale materials.
Compliance and Standards
Cleanroom overhead cranes must comply with strict industry standards, such as ISO Class 5 or better, and adhere to guidelines set by organizations like the International Organization for Standardization (ISO) and the American Society of Mechanical Engineers (ASME). Regular inspections and certifications are required to ensure that the cranes continue to meet the necessary cleanroom criteria.In summary, a 12t double girder cleanroom overhead crane is a critical piece of equipment for industries that require ultra-clean environments. Its design and components are specifically tailored to maintain high levels of cleanliness and operational precision, ensuring that the processes and products within the cleanroom are not compromised by external contaminants.