Container Tipper & Bulk Loader
Client: NZ Express Transport Christchurch Limited
Category: Design and Certification
Background
In 2004 Motovated Design & Analysis was approached by NZ Express Transport Christchurch Limited to help in the development of an innovative idea for loading grain and bulk products into containers. NZ Express was a freight distribution company, covering shipping, rail, road transport and warehousing until October 2005, and is now represented by Bedrock Trading Ltd.
The design specifications to be met were:
- Meet on road transport standards for size and weight.
- Incorporate a weigh bridge using load cells.
- Self sufficient operation.
- Allow access to container door when vertical.
- One hour container fill cycle.
- Open and close container doors in any orientation.
Solution
The Container Tipper and Bulk Loader (Figure 1) allows a standard 20 foot container to be stood vertically, and grain to be fed from the hopper into the container by the conveyor. The built-in weigh bridge measures when the desired transport load is reached, and filling is stopped.
Design features were added to allow the loader to be collapsed and loaded onto a truck for transport (Figure 2). Key features include:
- Single person operation, moving over 23 tonnes of grain in half an hour .
- The generator, power pack and load cells are housed on board the main base, allowing independent on site operation.
- A simple hydraulic lever system to open and close the container doors.
- Strength verification of the design using Finite Element Analysis (FEA)
- Optimal location and size of the tipping hydraulic cylinders .
Results
The loader is entirely multi-functional, and may be used with a variety of filling methods, from silo tubulators and augers to direct filling from a truck or bucket loader.
The weigh bridge removes guess work and ensures that over-weight pay loads are no longer a worry. With a significant increase in gross turnover, the initial investment in design and fabrication was exceeded many times over. Motovated provided:
- Profile, weldment and assembly drawings for manufacture.
- Specifications for electrical and mechanical control features for the correct and safe operation of the equipment.
- Onsite reviews and technical assistance.
Figure 1: Container Tipper and Bulk Loader, in filling position
Figure 2: Container Tipper and Bulk Loader, ready for transport



