Rope rescue pulley systems More than nine years of research and development went into the patented Multi-Purpose Device (MPD), which features major innovations in advanced technical hardware for rope rescue professionals. In this system there are three ropes that exert effort on to a load of 90kg, so each rope is supporting 1/3 of the loads weight (30kg). Sizes: Red = 13 mm, Blue = 11mm Mar 15, 2021 · Pulley Configurations: Using efficient pulleys, such as Petzl’s PRO and RESCUE pulleys, ensures reduced friction and smoother operation. You can quickly exceed the safety margins of the equipment in the system if you don’t properly understand the system you created and the power it has. Find CSR Pulley System at CMC. The first two illustrations on this page show how to rig both varieties. A Z pulley system is commonly used in rope rescue scenarios to increase mechanical advantage and lift heavy loads. In The Rock Exotica AZTEK pulley system is the ultimate multipurpose tool of rescue and technical rope access climbers. Variable-friction descent control device for rescue systems and rappels; Incorporates a high efficiency pulley with an integral rope-locking mechanism (ratchet) for a haul system; Built-in becket allows cleaner rigging and more efficient pulley systems mechanical advantage for any pulley system with only three pulleys (or bends in the rope) that I was able to locate. Knots and Hitches: The Language of Rope Rescue Knots and hitches are the foundation of every rope rescue system. Unfortunately, the 8:1 (2X2X2) compound system is not very practical for small team rescue and thus isn’t shown. TTRS is especially beneficial in complex scenarios like edge You will need a 50–75-foot throw rope, prussik, two carabiners, two pulleys and a sling. Rope rescue systems are essential tools for emergency services, designed to safely transport loads or injured individuals from hazardous situations. A simple 4:1 system is built by starting at the anchor and threading the rope through pulleys on the load, the anchor, and back to the load. Specs. Systems comes completed reeved and packed into its storage bag ready to use. These pulleys are designed to manage the movement of a load, preventing it from moving too far or too fast, while also allowing for smooth rotation and alignment of the rope system. ) Use a large pad to protect the rope and to reduce friction over an unprotected edge, two pulleys, two carabiners, a rope long enough to accomplish the rescue, plus additional length as a safety factor. The Double Mariner Purchase uses minimal gear but requires a bit longer haul The systems we've seen thus far (i. For example, the figure below shows a 3:1 simple system pulling on a 2:1 simple pulley system, resulting in a compound 6:1 pulley system. Apr 26, 2019 · An easy way to think about the difference is in rope rescue work the ropes are moving whereas in rope access work the ropes are stationary and the technician moves up and down the rope. Simple Pulley Systems. The 10mm rescue ropes without knots have a breaking strength of around 27kN; The 8mm as a loop without bends have a breaking strength of around 16kN x 2 = 32kN Cutting Lengths. Compact and lightweight with a standard system weight of 17 pounds (7. It’s familiar, reliable, and deeply ingrained in training programs worldwide. Built to the same precision standards and quality of our other pulleys, The NFPA Single, Large is the big daddy of our aluminum rescue Pulleys. Lightweight, full strength aluminum prusik minding pulley with sealed ball bearings for mountain and swiftwater rescue. , the "traveling pulleys") do so at the same speed and in the same direction as the load. This compact set of fours can be configured as a 4:1 or 5:1 and can be used as a pick off, adjustable directional, high directional g Rope Access / Rescue Snatchet Snatchet combines a high-efficiency pulley with a compact and intuitive anchoring system that may be introduced to the middle of a system without needing to re-rig. The MPD is UL Classified as a Pulley, Descent Control, and Belay device. It can be attached to an anchor and ready to use in seconds. Use a swivel pulley to create a 2:1 system and connect it to the tripod head with a capture device like a Petzl Pro Traxion. The Rescue Utility System is primarily used for raising and lowering people or equipment in rescue and industrial work access and ideal for confined space applications. Five-to-one mechanical advantage systems can be rigged as either simple or complex systems. The machined aluminum swivels at both ends of the system eliminate any potential twisting of the lines. The double Z-rig is a 3:1 Z-rig Jan 2, 2025 · For decades, the traditional mainline-belay rescue system has been a cornerstone of rope rescue operations. The user is required to apply a force of 25kg to raise this 100kg load, for every 4 metres of rope that the user pulls through the pulley system the load will only be raised by 1 metre. These systems are straightforward but offer limited mechanical advantage. This article will explore various types of rope rescue pulley systems and their applications in different scenarios. Hence the term rope rescue. 5 mm (1/2 in) Static-Pro Lifeline; Systems are UL Classified toNFPA 1983 (2017 ED) General Use; CSR2 Pulley MBS 46 kN (10,341 lbf)/CSR2 Double Pulley MBS 45 kN (10,116 lbf) Feb 28, 2017 · A 4:1sCD (left) or 5:1s (right) can be useful pulley systems for various tasks. You may also like: heightec’s VANTAGE 5:1 Locking Casualty Pulley for transferring a casualty onto a rescue system without cutting connections. It does not contribute to the system’s mechanical advantage. The second two illustrations show how you can convert 3:1 systems to 5:1 systems. Jul 31, 2019 · This pulley system provides a 4:1 mechanical advantage. Traditionally these individual items have been stored and transported as a cache of equipment grouped necessarily have to involve ropes to be termed a rope rescue. The Rescue Pulley System is made from marine grade pulleys and 8mm kernmantle cord, has an integral twin cam brake that can be set at differing angles for positive locking or unlocking and has a 3:1 mechanical advantage ratio. What many people unfamiliar with engineering principles fail to understand is that pulleys are vital for giving firefighters the mechanical advantage they need to lift someone out of dangerous situations. 5 mm (1/2 in) Static-Pro Lifeline; Systems are UL Classified toNFPA 1983 (2017 ED) General Use; CSR2 Pulley MBS 46 kN (10,341 lbf)/CSR2 Double Pulley MBS 45 kN (10,116 lbf) Developed over a number of years, the AZTEK is now a state of the art multi purpose rescue rigging tool. g. 1 Systems comes completed reeved and packed into its storage bag ready to use. A 4:1 rescue pulley system Pulleys are equipped with a built-in anti-reversing lock. 120cm (with 3. A compound pulley system is notated with the lowercase letter (c) after the mechanical advantage of the system. It’s compact design limits the number of connectors and the height of the system. The design of a track pulley allows it to glide smoothly along the rope without twisting or rotating, ensuring that the rope runs smoothly through the pulley. Simple 4:1 System. Pulleys B & C and their anchors are subject to 60kg each. Pulley Setup. May 31, 2022 · Pulling down on a rope connected to a fixed pulley allows a load to rise, making the operation feel more natural due to gravity. In a simple system, one rope is routed between pulleys on the anchor and load, and all of the pulleys that move (i. Mar 8, 2023 · The idea was to match the Prusik breaking strength and rescue rope we use. e. The result: more flexibility with less friction. 5cm tails and tensioning, the finished loop is around 37cm) Notes Aug 10, 2022 · Steps to Build the Split 4:1 Raise System: Dead-End the Rope Attach the rope to the tripod head or AHD (Artificial High Directional). CSR pulleys, rope & carabiners kit for efficient lower & raising in confined space rescue and industrial rope access. Simple M/A systems can be defined as systems with all the moving pulleys moving in the same direction and at the same speed as the load. The newest addition to our pulley line that will accept ropes up to 5/8 diameter. Compound Pulley Systems – These are pulley systems where one pulley system is pulling on the effort of another system. A well-designed pulley can significantly reduce friction, enhance mechanical advantage, and ensure smooth operation. Types of Pulleys Jul 24, 2019 · On one side of pulley A the rope has been attached to a fixed anchor point, the rope on the other side of pulley A has been sent back down to the ground via a redirect pulley (pulley B) where the user applies the effort to lift the load. Ralf 5:1 System. Rule #2: Rope Tied to the Anchor A 4:1 rescue pulley system Pulleys are equipped with a built-in anti-reversing lock. The T-System, which is sometimes referred to as the T-Method or the "adding the tensions" method, is a versatile way to calculate the mechanical advantage of a rope-and-pulley system. Examples of high-quality single pulleys are the Petzl Rescue Pulley and the CMC Rescue Pulley. This system is also an excellent choice for confined space entry or rope access work where a heavy-duty pulley system is desired. Find out here the 4 steps to set up this system and have a safety strategy in your back pocket. It requires less rope than a (non-piggybacked) 2:1 system, is reasonably easy to rig, is easy to add a progress capture device, provides an appropriate amount of mechanical advantage to raise one or two people, and with a few tweaks it can be converted into a simple 5:1 system . An Innovation in Rope Rescue! Pulley / Rescue Belay / Descent Control The MPD allows you to go from lowering to raising without changing hardware. However, as rescue demands evolve, so must the techniques. 7 kg) The system has been designed to be capable of lifting or lowering a two person load, 600 lb Abtech Rescue Hauler Pulley System. In rope rescue and rigging systems, accurately analyzing mechanical advantage (MA) is critical for efficient operations and safety. Extend a line from the Pro Traxion to the foot end of the patient’s Pulley system equipment: (Make sure the equipment is rated for rescue work and has at least a 5,000-pound load capacity. CONTACT US 800-513-7455 The Skedco 4:1 Rescue Kit utilizes the Rescue Hauler, a double pulley, two large steel ‘D’ carabiners, the required amount of 1/2″ PMI static kernmantle rescue rope, and a handy rope bag with a pocket for storing the pre-rigged system. Example: A flagpole system is a classic example of a 1:1 fixed pulley system, where the input force equals the load’s weight. Auto-locking Rescue Hauler System with a working length of 15m - Suitable for lifting and lowering a load (including a casualty - Max. Integral component of RescuePack casualty recovery systems. In a typical 3:1, If each pulley is 90% efficient, our tension is reduced by 10% at each turn. Jun 4, 2024 · Depending on the pulley system you intend to build, you will need a couple of extra pulleys and 1-2 additional rope grabs, such as a 5:1 simple as a minimum or even up to a 9:1 compound. Jun 15, 2023 · Swivel-style pulleys are an essential tool in technical rope rescue, combining a prusik-minding function with a built-in swivel for enhanced control and efficiency. For example, we could use the Jigger as a bolt-on pulley system (shown above). The products offered are all tested for quality, strength, and flexibility. Choosing the right type of pulley for a system depends on the specific demands of the rescue scenario. However, the Jigger used for rescue hauling in a backcountry context may not be enough as you have a small number of haulers and limited equipment. Tensioning Systems: 3:1 or higher mechanical advantage systems with progress capture devices. The only math that is required is adding a few one-digit numbers. If we use the system on a single rope, we need a short extension, such as a quick draw. The most common is a 3:1 mechanical advantage, sometimes called a “Z” rig because when rigged, the rope looks like a “Z”. RALF PULLEY, 2 DOUBLE PULLEYS, 2 CARABINERS, MAILLON RAPIDE, ROUND SLING, 80M KERNMANTLE ROPE AND ROPE BAG; Ralf 3:1 System . Carriage Systems: Custom-built or modular solutions for secure load transport. That means no more than 12 people pulling on a fixed rope, no more than 6 people hauling a 2:1, 4 and a 3:1 and so on. 9). •250 kg maximum WLL-1 person working or 2 person rescue •Components certified to ANSI Z359:4:2007, EN 12278 •Rope MBS 29. This method goes beyond Sep 12, 2024 · This type of pulley is used to create efficient and controlled movement in various rope systems during rescue operations. 5:1 System. All-new stronger, lighter-weight design The CMC Double Rescue Pulley is a high-performance pulley designed to handle the demands of technical rescue and rope access operations. While a single change-of-direction pulley would reduce the output force by 5%, with four pulleys (or sheaves) in the system, the reduction of the output force approaches 20%. Compound Systems: Combine multiple pulleys to create a greater mechanical Rescue Equipment Rescue School CMC manufactures and distributes Rescue Equipment. The T-Method provides a systematic approach to evaluate pulley efficiency, taking into account friction and real-world variables. There are many tools involved within the discipline of rope rescue that can be used independently to carry out a rescue. Let’s then say you only have 1 pulley with you. All-new stronger, lighter-weight design; Available witheither11 mm (7/16 in) or12. Casualty recovery hauling device. Jul 31, 2019 · An easy way to calculate the ratio of a pulley system is to count the amount of lines that apply effort on the load. Two large-diameter sheaves mounted on sealed ball bearings provide excellent efficiency when moving. In most cases you can’t accomplish your rope rescue mission without the humble, simple pulley. Although the T-System may appear complicated, it really isn't. This is handy if you rig a 3:1 and don't quite have enough pulling power. Combining two pulleys and a rigging plate, the REEVE carriage pulley is an integrated solution designed to simplify setting up rescue systems on tensioned highlines. 4kN Options. Ideal for industrial applications as well as many rescue operations, the CSR 2 uses our proprietary, patented locking system, which eliminates a toothed cam or Prusik so it can be easily and safely released Jan 22, 2024 · Highlights of the 13 Critical Components of Rope Rescue Training. A few simple pulley systems are most frequently used. Mechanical advantage systems can be either simple, compound, or complex. Our CSR 2 (Confined Space Rescue) Pulley is strong and light, and accommodates life safety rope from 7/16 in (11 mm) to 1/2 in (13 mm). Compound Systems: Combine multiple pulleys to create a greater mechanical The use of rope rescue pulley systems is crucial in emergency situations where efficient and safe rescue operations are required. Feb 16, 2024 · Understanding Pulley Efficiency in Rescue Operations. Jun 2, 2021 · Pulley Systems: High-efficiency pulleys for smooth operation and reduced friction. With a robust construction and efficient design, this pulley is ideal for creating complex mechanical advantage systems, hauling heavy loads, and managing high-tension lines. These systems provide a mechanical advantage, allowing rescuers to handle heavy loads with ease. The 5:1 is a 3:1 Z-drag and 2:1 system hooked together in parallel (see Figure 6. Clip the extra pulleys/rope grabs and short extension on the anchor Rescue Equipment Rescue School CMC manufactures and distributes Rescue Equipment. From single micro pulleys, knot passing pulleys and large four inch rescue pulleys First Out Rescue Equipment offers a complete selection of rope rescue pulleys from RescueTECH1. CMC Rescue School offers rescue school courses and rescue classes. And for the carabiner being used as a pulley, the efficiency is about 50%. What appears to be yet another set of pre-rigged twin sheave pulleys is in fact the basis for a complete system that allows the user access either to an edge restraint/rappel line or a super high strength set of fours. The Rock Exotica AZTEK pulley system is the ultimate multipurpose tool of rescue and technical rope access climbers. This compact set of fours can be configured as a 4:1 or 5:1 and can be used as a pick off, adjustable directional, high directional g Rescue Gear Knives; Books & Swag; Rope & Webbing Premium SAR Rope, Fire Rescue Rope and Rope Accessories Rock & Rescue offers premium rescue rope for SAR and Fire Rescue operations across the United States. Anchors: Bombproof natural anchors or adjustable artificial high directionals like A-frames. Comprises the ISC R-ALF, 2 x Heavy duty twin pulleys and 11mm low stretch rope. This manual is designed to introduce the rescue squad driver to the basic philosophies and techniques of rope rescue. Nov 9, 2024 · The Central Role of Pulleys in MA Systems. Understanding pulley efficiency in rescue operations is a critical factor in the performance of any technical rope system. To ensure these systems operate safely and effectively, rigorous analysis is necessary to identify and address potential weaknesses. . The 4:1 system can be rigged as either a simple or compound system. 250kg). Originally developed by Reed Thorne of Arizona-based Ropes That Rescue , the AZTEK (Arizona Technician’s Edge Kit) is used worldwide and offers more than Rope is an incredibly important part of a firefighter’s equipment—but equally important is the rescue pulleys that go with said rope. 5:1 System; 6:1 System; 9:1 System; Simple, Compound, and Complex. Find Rescue Pulleys at CMC. The most common rope rescue scenario is a top down rescue where the team all starts at an elevated point and a rescuer is lowered to the patient. For example, in a 3:1 system, adding a CD pulley does not change the system’s total advantage. Movable Pulley Systems 3:1 System The 3:1 is the classic mechanical advantage system used by rescuers. As one of the most versatile tools in rope rescue, the CMC AZTEK ProSeries System reflects our philosophy of keeping rigging equipment simple, efficient, light, compact, and multi-purpose. Rescue rope o Most pulley systems can be built with 75' or 150' lengths of rope Rescue pulleys Prusiks o Hauling prusiks, to grab the rope and pull it into motion o Ratchet prusiks, to stop the rope from moving and allow the system to be reset Anchor point or system Types of Mechanical Advantage Systems Simple: A simple system has all its Jun 5, 2023 · Understanding the T-Method for Pulley Efficiency. RALF PULLEY, 2 SINGLE PULLEYS, 2 CARABINERS, MAILLON RAPIDE A simple 6:1 has a lot of pulleys, but this illustration is worthwhile as an education tool. Remember that in "even" numbered systems (e. The VANTAGE provides a strong Jan 16, 2020 · If the pulley closest to the haulers is anchored, it acts only as a change of direction (CD) pulley. The 60 second Z-Drag is a simple and efficient rope rescue system to help you and your paddling pals out in a sticky situation. Learn how to create a Z pulley system diagram and understand its components and uses. Twin Tension Rope Systems (TTRS): This setup balances the load between two ropes, providing redundancy and ensuring stability during hauling. As a rule, never exceed a 12:1 MA ratio. CMC offers the following types of products: Rescue Equipment Rescue Harnesses Fire Harnesses Ropes Rescue Hardware Rescue Pulleys CMC Offers Professional Rescue Equipment for Rescue Professionals: Equipment for Firefighters Equipment for Search Jul 23, 2024 · Simple Systems: Utilize a single pulley to redirect the force, providing a 1:1 mechanical advantage. The construction of rope rescue systems requires the assembly of individual items (rescue rope and related equipment) into functional components that when put together form operating systems. The effect of pulley efficiency on a mechanical advantage system is cumulative, meaning it increases with the number of pulleys (or sheaves) in the system. Explore step-by-step instructions and illustrations to help you visualize the setup and operation of the Z pulley system. Pulleys are fundamental components of MA systems, providing two key functions: directing the pulling force and multiplying it where needed. , the 1:1, 2:1, and 3:1) are all simple systems. , 2:1, 4:1, 6:1, etc) the end of the rope is connected to the anchor, as shown in this 6:1 system. This module teaches not only how to tie essential knots like the figure-eight, clove hitch, and Prusik but also their specific applications in rescue scenarios. The 4:1 piggy-back is a 2:1 pulling on a 2:1 system (see Figure 6. Offers rapid deployment, is virtually maintenance free, and is rated for two-person load. Sep 21, 2022 · Let’s say our system pulleys are 90% efficient, that’s about average for pulleys you see in rescue. 10). Allows pulley system to be created at any point along a kernmantel rope. CONTACT US 800-513-7455 Mar 24, 2024 · A compound system is ‘one (or more) simple system pulling on another simple pulley system’. woynf pdgn ryklh boip qtbu evahdfy khwj omshy kuot vbzx