2Pcs 2Inch Furniture Moving Belt Team Straps Adjustable Mover Easier Lifting Conveying Belt
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The sky is the limit: human powered cranes and lifting devices
From the earliest civilisations right up to the start of the Industrial Revolution, humans used sheer muscle power, organisation skills and ingenious mechanics to lift weights that would be impossible to handle by most power cranes in operation today. The most common tower crane used in construction today has a lifting capacity of some 12 to 20 tonnes. For quite a few construction projects in ancient history, this type of crane would be completely inadequate. The majority of stones that make…
Setting up a Z pulley for stretcher hauling rescue - Bush Search and Rescue Victoria
This equipment is used for stretcher hauling on steep snow and ice terrain These instructions are indicative and may be varied in the field Escort attached to the Safety line is NOT illustrated All ropes are static ropes (e.g. Blue Water 11m) Z pulley setup for rescues will be supervised and checked by Police Officer … Continue reading "Setting up a Z pulley for stretcher hauling rescue"
Pulley Systems - Flaschenzug
This document shows you how to make an effective and useful pulley system. If you study the pictures, you will be able to understand how the ratio of a pulley system is calculated. Understand that the maximum load to the break in a pulley system should not be underestimated. And last but not least I visualized you some systems with different ratios. This is for example useful if you plan to setup longer slacklines.
How to Set Up a Double Pulley System
Reeving blocks to set up a double pulley system requires a little thought. A double pulley system, also known as a "block and tackle," consists of the pulleys, or blocks, and the tackle, the ropes riven through the blocks. You must decide if you will use a double pulley system with one sheave--the roller in a ...