CRANES, LIFTING EQUIPMENT & WINCHES Innovation Drives Safety:
Next Generation Quad-Pawl Chain Hoist Technology ‘WH C4-QP’ Is Launched to Provide Onshore Operators With Increased Levels of Safety and Better Performance
William Hackett announces its launch of the WH C4-QP the newest addition to their hoisting range incorporating quad pawl technology.
Designed for lifting applications on or offshore where resilience to failure and fine tolerance adjustment are essential, the WH C4 range of chain hoists are the only chain hoists to incorporate a QP mechanism for onshore use and tested to twice the required industry norm.
• Safety: Enhanced built in failure resilience means the patented QP mechanism within the chain hoist will operate safely should individual pawls or springs fail.
• Proven: Endurance tested to over 3,000 cycles.
• Durability: WH C4- is manufactured with strict quality of design and materials to make it weigh less. Its reduced unit mass reduces the risk of injury to the user during handling, transfer and rigging.
William Hackett, world-leaders and pioneers of lifting chain and hoists, announce a major step forward for onshore operators with the launch of the WH C4-QP.
“Innovation based on a detailed understanding of lifting applications is at the heart of what we do, and this latest addition of the QP in the WH C4 range of hoists increases the level of operational safety and performance within the chain hoist,” says Ben Burgess, Director at William Hackett.
“The QP offset load bearing mechanism is the best in the market, and it offers enhanced operating
performance compared to first- generation twin-pawl products,” says Burgess. “With double the number of offset pawls in a chain hoist, from two to four, the load is spread securely against the ratchet gear to provide increased redundancy for the user.”
Safe and continual performance of lifting equipment crucially depends on minimising risk through improved resilience to failure. Lift operations are often fast-moving, challenging and within hazardous environments. Improvements in efficiency, ease of use, and safety can yield large returns for operators across any industry – from construction, engineering and shipping, through to energy and transport.
The QP works by allowing all four pawls to engage with the ratchet gear in an offset configuration that allows for finer adjustment, and tensioning capability, while maintaining pawl and ratchet gear engagement.
The pawl springs are enclosed in the product’s brake chamber to minimise contamination, and the pawl design ensures that in the unlikely event of both pawl springs failing, the quad
pawls maintain full function with the ratchet gear, making the hoist operation much safer to use. The QP mechanism synchronises to minimise the time and distance travelled to the next point of engagement providing smoother lift operations.
“It overcomes jamming and unintended malfunctions that can be experienced when using other simpler first-generation products,” says Burgess. “This helps to minimise project downtime or costly delays to work scopes, providing reassurance and peace of mind for operators and contractors.”
Later this year the company is preparing to launch a subsea version of the WH C4-QP that comes with high corrosion-protection for offshore operations to help subsea operators benefit from increased safety features in subsea hoist operations.
q 01665 604200 E
liftingsales@williamhackett.co.uk H
williamhackett.co.uk
May 2021
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