ABOUT US

Since 2010, Wanpu has focused on safety monitoring for lifting equipment, specializing in the research, development, production, and sale of crane safety devices. We provide solutions for various types of cranes to enhance operational safety. With advanced technology and reliable products, our equipment is used on cranes worldwide.

As a national high-tech enterprise, Wanpu has secured multiple intellectual property rights and patented technologies in the field of crane safety. With independent research and development centers, manufacturing facilities, and testing platforms, we ensure that our products consistently feature advanced technology and reliable performance.
Our primary products include Load Moment Indicators (LMI), Load Indicators (LI), Rated Capacity Indicators (RCI), sensors, and anemometers, all of which can be customized to meet specific customer requirements. We supply safety devices for various types of cranes, including mobile hydraulic cranes, crawler cranes, off-road cranes, truck-mounted cranes, and dock cranes.
By offering advanced, cost-effective, and reliable products that help customers maximize their profits, we consistently uphold the quality of our products and services. This commitment is why customers choose us year after year.

Application Areas

Mobile Crane

Hydraulic Crane
Telescopic Crane
Lttice Boom Crane
Tower Cranes
Pipe Layers
Side Loaders
Truck Mounted Crane
Reach Stacker
Harbour Crane
Junkyard Crane
Overhead Cranes
Aenal Work Platform
Excavator

Products

Load Momnet Indicatoy LMI
Load Indicatoy LI
Rated Capacity Indicatoy RCI
Systems
Wind Speed Indicator

Load Moment Indicator – LMI

For hydraulic cranes, the LMI reads its load value using a pair of pressure transducers, which read the cylinder pressures of the lift cylinders

Rated Capacity Indicator – RCI

On a Rated Capacity Indicator, the load weight value is calculated by reading the strain on the wire rope. This is done by using a load pin in a sheave, a running line tensiometer (linerider) or a dead-end load cell installed at the becket end. A digital load chart is also available to show load capacity.

Load Indicator – LI

This is the simplest form of load monitoring. Here, a strain gauge device is used to read the wire rope tension producing a load value. The load sensing device can be installed in line to the crane rigging or can be placed under hook.

What is crane load?

Each crane has a load chart that, in short, specifies the crane’s capabilities — detailing its features and how its lift capacity varies when considering distance and angle. … Before a crane is rented, transported, employed or purchased, the crane chart must be consulted.

What is a load moment indicator?

Load Moment (or Rated Capacity) Indicator means a system which aids the equipment operator by sensing (directly or indirectly) the overturning moment on the equipment, i.e., load multiplied by radius.

How does a load moment indicator work?

Using different sensing devices, the Load Moment Indicator monitors various crane functions and provides the operator with a continuous reading of the crane’s capacity. The readings continuously change as the crane moves through the motions needed to make the lift.