20 Cần cẩu trên không: Độc thân vs. Giá dầm đôi

20 Tôn đơn dầm vs. Double Girder Bridge Cranes

The primary distinction in 20-ton overhead cranes is between single girder and double girder designs. The choice depends on your application’s specific requirements for frequency, nhịp, and duty cycle.

20 Cần cẩu dầm đơn tấn

A single girder crane features one main beam (girder) upon which the hoist and trolley travel. The hoist is typically mounted under the girder.

Best For: Applications with lighter duty cycles, shorter spans (typically up to 30 mét), and where cost-effectiveness is a primary concern.

Key Characteristics:

• 1. Lower Cost: Simpler design requires less material and fabrication, resulting in a lower initial investment.
• 2. Lighter Weight: Puts less stress on the building structure, which can be crucial for existing facilities.
• 3. Reduced Headroom: The hoist sits directly under the girder, requiring less vertical clearance (headroom) than a comparable double girder crane. This is ideal for buildings with height restrictions.

Limitation: Generally not suitable for extremely heavy-duty, continuous (CIC – Continuous Intermittent Cycle) applications or very long spans.

Ứng dụng

20 Ton Single Girder Electric Overhead Travelling Crane

20 Ton Explosion Proof Single Girder Overhead Crane

20 Ton Low Headroom Single Girder Overhead Crane

20 Ton Double Girder Overhead Crane

A double girder crane features two main beams that support a trolley that runs on top of the girders. The hoist is mounted on this trolley.

Best For: Severe-duty applications, longer spans (over 30 mét), higher duty cycles (CIC), and situations requiring maximum hook height.

Key Characteristics:

• 1. Higher Capacity & Độ bền: The dual-girder design offers superior strength and is built for intensive, sử dụng thường xuyên.
• 2. Greater Hook Height: Because the trolley runs on top of the girders, the crane provides a higher lift, maximizing the usable space below.
• 3. Additional Features: Can more easily accommodate auxiliary hoists, magnet packages, or other special lifting attachments.

Limitation: Higher initial cost and weight, and requires more headroom.

Ứng dụng

20 Ton Double Girder Overhead Crane with Hoist Trolley

20 Ton Grab Bucket Overhead Crane

20 Ton Overhead Crane Technical Parameter Table

20 Ton Double Girder Overhead Crane

20 Ton Overhead Crane Price

Providing an exact price is impossible without specific project details. MỘT 20 ton overhead crane price is highly variable and depends on:

• 1. Type: A single girder crane is significantly less expensive than a double girder crane.
• 2. Khoảng cách: The distance between runways directly impacts the price (longer span = higher cost).
• 3. Nâng chiều cao: Higher lift requirements increase the cost.
• 4. Chu kỳ nhiệm vụ: Cranes rated for severe-duty (Nữ / CMAA Class D or E) cost more than light-duty (Class A) cần cẩu.
• 5. Controls: Radio remote control adds cost compared to a standard pendant control.
• 6. Brand of Components: Using premium hoist brands (VÍ DỤ., Konecranes, Demag) increases the price.

Price Range: A basic 20 ton single girder overhead crane might start around $15,000 - $25,000, while a custom, large-span, double girder overhead crane can easily exceed $50,000 - $100,000+. Always request a detailed quotation from a supplier.

Delivery Lead Time for a WEIHUA 20 Cần cẩu trên không

The delivery lead time for a WEIHUA 20 ton overhead crane is not a fixed number but depends on several key factors related to the project’s complexity and customization. Nói chung là, for a standard specification crane, the lead time ranges from 40 ĐẾN 60 working days after the final order confirmation and receipt of down payment.

For more complex or heavily customized projects, the lead time can extend to 60-90 working days or more.

The following table breaks down the typical stages of the process and the factors that influence the timeline:

20 Ton overhead crane manufacturing process

WEIHUA Factory

Key Factors That Directly Impact Your Delivery Time

• 1. Single Girder vs. Double Girder: MỘT 20 ton single girder overhead crane has a simpler design and is often faster to produce. MỘT 20 ton double girder overhead crane is more complex, requiring more engineering and manufacturing time.

• 2. Level of Customization: Standard cranes are delivered fastest. Customizations like:

  • Explosion-proof specifications
  • Special paint coatings (VÍ DỤ., for marine environments)
  • Unusual span or lifting height
  • Advanced control systems (VÍ DỤ., automation, precision load positioning)
    will significantly increase the lead time.

• 3. Order Quantity: A single crane order will follow the standard timeline. A larger order for multiple cranes will naturally take longer, though there may be some efficiency gains.

• 4. Component Availability: WEIHUA manufactures many core components, which helps control the supply chain. Tuy nhiên, if you specify third-party branded components, their lead time must be factored in.

20 Ton Overhead Crane FAQ

Q1: Which is better for my workshop, a single or double girder 20 cần cẩu tấn?

MỘT: If your usage is occasional, spans are short, and budget is key, a single girder is likely sufficient. For daily, intensive use, long spans, or needing maximum hook height, a double girder is the better, more durable investment.

Q2: What maintenance is required for a 20 cần cẩu tấn?

MỘT: Regular inspections are essential. Daily checks by the operator, periodic inspections by a supervisor (monthly/quarterly), and a full annual inspection by a qualified technician are recommended to ensure safety and longevity.

Selecting the right 20-ton lifting equipment is a strategic decision that impacts your operation’s safety, hiệu quả, và năng suất. By understanding the differences between single and double girder cranes, as well as alternatives like gantry and jib cranes, you can make an informed choice. Contact us today for a free consultation and a customized quotation for your 20-ton overhead crane solution.

Q3: How to get a precise delivery date?

MỘT: To receive a firm delivery date, it is essential to provide WEIHUA with your detailed requirements. A formal quotation will include a specific lead time.

For the most accurate and competitive offer, please contact us with your specifications.

We, WEIHUA, are committed to providing high-quality cranes and reliable delivery schedules. We understand that your project timeline is critical and will work closely with you to ensure a smooth process from order to delivery.

WEIHUA Overhead Crane PDF Information: Tải xuống