EOTクレーン

EOTクレーンとは?

EOT Crane Structure Diagram

EOT crane is a fundamental piece of equipment in manufacturing, assembly, and storage operations. The defining characteristic of an EOT crane is that it operates on a fixed runway system, typically consisting of two parallel beams (runway rails) attached to the building’s support structure.

The crane itself “travels” along these rails, covering the length of the bay, while a hoisting mechanism moves across the crane’s bridge, covering the width. This combination of movements allows the crane to serve virtually every point within its rectangular working area.

Main Types of EOT Cranes

10 Tons EOT Crane

EOT Cranes are primarily categorized by their bridge structure and the number of beams they use. The two most common types are:

1. シングルガーダーEOTクレーン

シングルガーダーEOTクレーン

5 Tons Single Girder EOT Crane

a シングルガーダーEOTクレーン features one main bridge beam on which the hoist and trolley operate. The hoist is typically mounted on a trolley that moves along the bottom flange of the girder.

• 重要な機能:

  • 1. 費用対効果が高い: Simpler design and less material make it a more economical choice.
  • 2. 軽量化: 建物の構造にかかる負担が軽減されます.
  • 3. Lower Headroom: Requires less vertical space, ideal for buildings with height restrictions.
  • 4. Easier Installation & メンテナンス: Simpler construction leads to faster setup and lower maintenance costs.

• 理想的な用途: Lighter to moderate duty cycles, capacities generally up to 20 トン, and applications where cost and headroom are primary concerns. Common in workshops, 倉庫, and smaller manufacturing plants.

2. ダブルガーダーEOTクレーン

ダブルガーダーEOTクレーン

A Double Girder EOT Crane is constructed with two main bridge beams that support the trolley and hoist. The trolley runs on rails mounted on top of the two girders.

• 重要な機能:

  • 1. Higher Lifting Capacity: Robust design allows for handling much heavier loads, often exceeding 100 トン.
  • 2. Better Hook Height: The positioning of the hoist between the girders provides greater lift height compared to a single girder crane of the same building height.
  • 3. 耐久性の向上 & 安定性: Suitable for severe-duty, ハイサイクルアプリケーション.
  • 4. Flexibility for Attachments: Easier to integrate auxiliary devices like walkways, maintenance platforms, or magnet cable reels.

• 理想的な用途: Heavy-duty applications, 頻繁に使用する, high capacities, 製鉄所, 鋳物工場, 発電所, and large-scale shipping ports.

Other Common Variations

• Top-Running vs. Under-Running: This refers to how the crane moves on the runway. Top-running cranes (described above) ride on rails atop the runway beams. Under-running (or underhung) cranes have end trucks that suspend the crane from the bottom flange of the runway beams.

• ガントリークレーン: A variant where the bridge is supported by two or more legs running on fixed rails at ground level, instead of being attached to a building structure. It is essentially a “self-supporting” EOT crane.

Applications of EOT Cranes

応用

EOT Cranes are the workhorses of heavy industry due to their efficiency and reliability. Their primary application scenarios include:

• 1. 製造 & Assembly Lines: Moving raw materials, components, and finished products between workstations.
• 2. 倉庫 & Storage Facilities: Loading and unloading heavy goods from trucks and organizing storage.
• 3. 製鉄所 & 金属製造: Handling raw steel coils, sheets, and fabricated metal structures.
• 4. 発電所: Installing and maintaining heavy equipment like turbines, ジェネレーター, そして変圧器.
• 5. 配送 & ポート: Used in shipyards for constructing and repairing ships, and in ports for handling containers and cargo (often as large gantry cranes).
• 6. Automotive Industry: Lifting vehicle chassis, エンジン, and large assembly jigs.
• 7. マイニング & Cement Industry: Handling heavy machinery and bulk materials.

EOT Crane Manufacturing Process

In summary, whether you need a cost-effective Single Girder EOT Crane for light-duty tasks or a robust Double Girder EOT Crane for heavy, intensive applications, this material handling solution is engineered to improve productivity, 安全性を高める, and streamline your operations.