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Retractable Fall Arrester Principle and Maintenance

Update:23-07-2020
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Introduction to the principle and maintenance of the fa […]

Introduction to the principle and maintenance of the fall brake ,The speed difference anti-dropping device can quickly brake and lock the falling object within a limited distance. It is suitable for cargo hoisting and protects the life safety of ground operators and the damage of the suspended workpiece. It is suitable for safety protection when the crane is hoisted to prevent the suspended workpiece from accidentally falling...

 

1. Introduction to the principle and maintenance of the fall brake,The speed difference anti-dropping device can quickly brake and lock the falling object within a limited distance. It is suitable for cargo hoisting and protects the life safety of ground operators and the damage of the suspended workpiece. It is suitable for safety protection when the crane is hoisted to prevent the suspended workpiece from accidentally falling. It can effectively protect the life safety of ground operators and damage to the suspended workpiece. It is used in metallurgical automobile manufacturing, petrochemical industry, engineering construction, electric power, and ships. , Communications, pharmacy, bridges and other high-level workplaces. This product is only a part of the system. The fall prevention systems are: vertical life system and horizontal life system. The horizontal life system is widely used.  

 

2. Working principle, the speed difference anti-dropping device uses the object's falling speed difference for automatic control, and it is used for high hanging low. When in use, only need to cross the nylon sling rope over the strong blunt side structure above, hang the iron hook on the nylon rope into the "n" ring, and hang the iron hook on the steel wire rope into the semicircular ring on the seat belt Can be used within. There is no need to replace the suspension points within the use radius. In normal use, the safety rope will expand and contract freely with the human body. Under the action of the internal mechanism, it is in a semi-tension state, so that the operator has no sense of worry. In the event of a fall, the pulling speed of the safety rope will be significantly increased, and the internal locking system will automatically lock. Make the safety rope pull out the distance not more than 0.2 meters, the impact force is less than 2949N, and there is no harm to the person who missed the foot. Work automatically resumes when the load is released. The safety rope will be automatically recovered into the device after work, which is easy to carry. The speed difference anti-dropping device adopts the original "double locking device" structure, which has stable locking, high safety factor and good reliability, and effectively solves the accident caused by hitting other objects due to excessive fall and swing in tilt operation. The speed difference anti-dropping device control system adopts special steel and has been specially treated, which is light in weight, wear-resistant, corrosion-resistant and impact-resistant. The outer shell is made of aluminum alloy, which is light in weight and does not age. The safety rope is a steel wire rope for aviation. The slings and seat belts are all flame-retardant and resistant to high temperatures of 200℃.  

3. How to use: Every time you use the seat belt, you must make an appearance inspection. During the use, pay attention to check it, and test it once within half to one year. It is required that the main components are not damaged. If any damage or deterioration is found, report it in time and stop using it to ensure safe operation. The speed difference type anti-dropping device is fixed and suspended above the working point, and the rope in the automatic controller and the semicircular ring of the safety belt can be connected to freely pull the rope out and work in a certain position. After the work is finished, the person moves upward, and the rope retracts into the automatic controller by itself. When falling, the automatic controller will be affected by the speed for braking control. During the test, the length of the pull-out rope is 0.8m, and the sliding distance when the simulated human body falls does not exceed 1.2m to be qualified.  

 

4. Precautions for use
1 The speed difference anti-dropping device must be hung high and low, and should be hung on a strong blunt-edged structure above the user during use.
2 Before using this product, check the safety rope and appearance, and try to lock it for 2 to 3 times (Trial locking method: pull the safety rope at a normal speed and make a "click" and "click" sound; pull the safety rope hard, It should be able to lock. The safety rope should be automatically recovered into the device when you let go. If the safety rope cannot be fully recovered, just pull out some safety ropes.) Stop using if there is any abnormality.  
3 When using the speed difference anti-dropping device for tilting operations, in principle, the inclination should not exceed 30 degrees, and if it is above 30 degrees, it must be considered whether it can hit the surrounding objects.  
The key components of the 4-speed differential anti-dropping gear have been specially treated for wear and corrosion, and have been rigorously debugged. No lubricant is required when used.  
The 5-speed differential anti-dropping device is strictly prohibited from twisting the safety rope. Disassembly and modification are strictly prohibited. And should be placed in a dry and dust-free place