Custom Design Projects

Weighing a Production Platform

ANYLOAD | Heavy Lift Ship Platform

The Challenge

To Prepare a Gas Production Platform for Transport by Ship Across Ocean:

The platform would be loaded on to a heavy lift ship at a seaport using dollies with dozens of rubber tires to move it. The rubber-tired dollies will need to distribute the weight over their total number. The heavy lift ship will have to add ballast to get the wide, open, after-deck down to the level of the load-out dock. Then, as the dollies roll the massive weight of the platform aboard, ballast water will have to be pumped, out of the ship, in an amount that equals the weight of that part of the platform that is already aboard. This is a delicate operation designed by specialized engineers who calculate the weight on the dollies, the weight of the volume of ballast water and the timing of the pumping that will maintain a level load-out between the pier and the ship..

The Project

The platform was actually built in two sections that would eventually be placed onto the legs on land. This is the kind of thing that engineers love and it is a fairly straightforward task. They need only get the weight of the platform and then calculate the amount of water to be removed from the ship as it rolls on board.

But it is more complex than that. The platform had been built from plans that gave it about two dozen short legs that were designed to mate with a prepared site thousands of kilometers away in a different country. Rubber-tired dollies would support each of these stubby platform legs, but they did not have the platform’s weight equally distributed to each one of them.

It was not a matter of simply weighing the whole structure and dividing by the number of legs. The bearing weight near each leg would have to be known to the engineers and this weight could only be accurately measured if each leg-area was lifted and weighted at the same time.

The Method

To lift the total platform as though on its legs all at the same time and get a weight of the pressure near each leg.

A well designed and built load cells that could be placed between the hydraulic lifting jacks and the structural beams adjacent to the legs.

Simple handles were affixed to each side for ease of manual lifting. Also on each disk load cell, there are two connectors, one each side of a junction box on the load cell body, each connector has one independent strain gage bridge. These strain gauges have been calibrated with the indicator individually, so in case of one load cell bridge failing on site, the second strain gage bridge will still provide the data.

With the weight on each of the legs is determined, engineers responsible for the load-out to the heavy lift ship are able to determine the arrangement of the dollies and, most importantly, a schedule for the de-ballasting of the heavy lifts ship. The all-important information would also be used again at the other end of the voyage for the off load of the platform and when the individual legs would mate with the prepared site.

The Result

Anyload developed a unique load cell specifically for this project. The load cells are designed and built a series of circular disk load cells that could be placed between the hydraulic lifting jacks and the structural beams adjacent to the legs.

It was a challenge to design the right load cell for this complex task. But it is the kind of challenge that is welcomed by the engineers at Anyload. Having been successfully completed, it is one more project in Anyload’s growing list of quality load cells for any application from milligrams to tons.


Rocket Launching Pad

ANYLOAD | Rocket Launching Pad Project

The Challenge

In 2007, we were approached to create a custom designed weighing system that would not only fit a rocket launching pad but also sustain the force and emissions of a launch. Due to the force of the rocket and the emissions produced, our challenge was to design an electronic weighing device that could not only survive the rocket's "ashes test" but that could also give an accurate reading.

The Process

Our engineering team determined the possible factors in supplying load cells for a rocket launch: force, heat, steam, water, vibrations and shock. Considering the possible factors of failure, the goal was to protect the strain gage and electronic circuits inside the load cell, making sure the connectors and cables could withstand the rocket's force and emissions.

The Results

After a 10 month period of design and testing, we successfully created load cells that were able to survive and contribute to a successful rocket launch.


China's First Retractable Stadium Roof


ANYLOAD | Nantong Stadium in China

The Project

In 2005, we were contracted by Enerpac to manufacture and supply 96 load pins for Nantong Stadium, China's first retractable stadium roof located in the Nantong, Jiangsu, China. Completed in 2010, Nantong Stadium is a multi-purpose stadium that holds 32,244 spectators and is known for being the world's first stadium in which the propulsion and stabilisation of the moveable parts take place hydraulically.

Load Cell Features

• Materials: Stainless steel and alloy steel
• Capacities supplied: 10t and 150t
• Safe Overload: 150%
• Breaking Overload: 400%

What We Provided

0

88 Stainless steel 10t load pins
  • 88

    88 Stainless steel 10t load pins
  • 12

    8 Alloy steel 150t load pins

Split Type Donut Load Cell


ANYLOAD | Split Type Donut Load Cell

Application

Designed to measure and monitor the tension force of an anchor that reinforces the stability of slopes for the prevention of landslides.

Installation

Each load cell half was designed with an individual strain gage and individual cable. When installed, the cable from each of the load cell halves are connected with a junction box.

Accuracy Results

The overall accuracy level achieved was 3% with a 0.5% difference in sensitivity when the load cell was rotated and used in different positions..

Load Cell Features

• Material: Alloy steel
• Capacity: 50t
• Safe Overload: 150%
• Breaking Overload: 300%

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