Hook lift hoists are mounted on heavy-duty trucks to enable hauliers to change out flatbeds, dumpster bodies, and similar containers. Primarily used in conjunction with tilt frame bodies and specialized containers, generally designed for the transportation of materials in the waste, recycling, scrap and demolition industries.
The system employs a series of hydraulic rams to hook, lift and hoist the container onto the chassis of the truck. There are several configuration options, and strict guidelines which must be followed to ensure that the container is secured on the truck in transit.
The flexibility offered by the hydraulic hooklift hoist system offers several advantages:
• Reduced licensing fees through reduced fleet size
• Ground level loading and unloading
• Exact positioning (dropping off) of containers
• Ability to get in and out of tight spaces
• Quick exchange of containers: system allows container to be lift/dropped in around 90 seconds
• Ability to engage a container up to 30° off center when picking up
• No cables to hook up, unhook or that could potentially break
• Complete in-cab operation
• The main disadvantages of the system are revealed on uneven ground:
• If below grade reach is small, it can be difficult to set down or pick up container
• Load handling stability, particularly while dumping, can be compromised at maximum dump angle. This is particularly the case in single lift/dump cylinder configurations
Container lengths are fairly inflexible, as hook lift hoists are designed to carry bodies within 3 to 5 ft (914 to 1,524 mm) of the shortest recommended body