10 Ton LX Underslung Bridge Overhead Cranes for Nigeria

A customer from Nigeria, their company is engaged in the production and sales of high-strength pipe, its products are widely used in municipal water supply, agricultural irrigation and oil and gas pipeline projects. According to the customer, as a result of the plant's growing order book in recent years, they acquired an old adjacent building and converted it into a storage and repair shop for large pipe molds. However, the biggest problem with this building was the lack of roof height and the inability of the structure to support the rail beam loads required for a conventional top-suspended traveler.

Initial Communication

The customer first contacted us through the website and in his message he wrote:

"We had an old factory building that was very low in height, but needed to lift about 10 tons of pipe molds and raw materials. Please let me know if there is a crane that can be hung under the existing beams, rather than the kind that sits on top of them."

Lifting requirements and operating environment challenges

After many communications and exchanges with the customer, we understand that the customer mainly has the following lifting needs:

UNDERHANG BRIDGE CRANE PARTS

UNDER-RUNNING OVERHEAD CRANE BEAMS

UNDERHANG OVERHEAD CRANE DELIVERY

Challenges in the Client Environment and Solutions

The customer had previously contacted us about the low height of the plant and that they needed cranes that hung under the beams. Therefore, after careful communication with the client, we identified the following main challenges in the client's operating environment.

1. Older plants with limited load-bearing capacity of track beams

The client's plant was originally a light steel shed. We asked the client for information on the type and spacing of the roof steel beams, and our engineers assessed the loads on the beams. The structure of the workshop was calculated to be insufficient to safely support the wheel pressure when the crane was in operation. To solve this problem, we can add a set of H-beams underneath the original roof I-beams to spread the wheel pressure of the crane end beams. This option has minimal modifications to the plant.

2. Installation commissioning and budget

The client company does not have professional installation and maintenance personnel for the time being, and their budget is limited, they do not want us to send installation engineers to the site to install. In order to facilitate the installation of customers, we pre-assembly and no-load commissioning of the crane before delivery, the main beam, end beam and hoist trolley and other components of the modular packaging, and a detailed installation step-by-step diagram is included with the box. In addition, we remotely guide our customers through the installation via video conferencing.

Customized Design Solutions and Parameter Confirmation

After many rounds of email communication and video conferencing, we finalized the following lifting plan:

Yuantai Overhead Crane for Limited Space Area

LDP Low Headroom Overhead Crane

1. Lifting Capacity: 1-32 ton
2. Span: 6 - 28.5m
3. Working Duty: A3-A5
4. Ambient Temperature: -20℃~40℃

LX Single Girder Suspension Crane

1. Lifting Capacity: 1-10 ton
2. Span: 7.5m-31.5m
3. Working Duty: A3, A4
4. Ambient Temperature: -20~40℃

Frequently Asked Questions (FAQ)

Q1: What is the difference between a lower suspension crane and a normal upper suspension crane?

Q2: Is 10 tons already the limit of the lower suspension? Is it safe?

A: 10 tons is a common upper limit for standard LX models. However, we can increase the safety factor up to 1.5 times (i.e. 15 tons in static load test) through the reinforced main beam and four-wheeled end beam design. As long as the track beam is sufficiently loaded, the 10-ton underslung crane is completely safe and reliable. If your tonnage exceeds 10 tons, we recommend considering a double girder lower suspension or switching to an upper suspension option.

Q3: Can the underslung crane be used outdoors?

A: The standard design is for indoor use (ambient temperature -20~40℃). If outdoor use is required, add a rain cover, corrosion-resistant coating, wind-resistant anchors, and a waterproof electrical box. Please clearly inform the outdoor use requirements before placing an order.