Product Description
Product Description:
The hook comprise rear pulley block, upper pulley block and 1 hook when we can change the wire rope from 4 to 2 fall.And we can also change the wire rope from 2 to 4 fall.
|
Brand
|
Fit |
| F0/23B | |
| H3/36B | |
| H25/14C | |
| H20/14C | |
| K30/30 | |
| H40/40C |
1. The purchase of hooks shall be used by technical documents such as the certificate of the manufacturer;The lifting hook, such as railway, port, etc., must be strictly inspected (inspection).
2. The lifting hook shall not have any defects affecting the safe use performance;The hook defects shall not be welded;The hook surface should be smooth, no crack, fold, sharp Angle, burr, crack, overburn.
3. Select 2 suitable positions at the shortest distance of the hook opening to print the non-wearing signs, measure the distance of the sign, and use it as the basis for detecting the change of opening degree in the use.
4. The lifting hook materials can be made of 20 high quality carbon steel or lifting hook special materials DG20Mn, DG34CrMo, etc. It is strictly prohibited to use casting hooks.Plate hook materials are generally used for A3, C3 ordinary carbon steel, or 16Mn low alloy steel
5. The technical conditions of the homemade hooks shall conform to the stipulations of GB 10051-88 ~ GB 10051.5-88 (new standard: gb10051.1-2571 ~ GB 10051.5-2571)
6. The longitudinal axis of the plate hook plate must be in the rolling direction of the steel plate, and the hook plate is not allowed to be spliced.
7. The plate hook and hook plate shall be riveted by the head rivet, and the high-stress bending parts of the hook and lifting objects shall not be connected with rivets.
8. No closed welding shall be allowed between sheet hook lamination, only intermittent welding is allowed.
9. The lifting hook that has already carried over the overload test should be scrapped.
Company Information:
SYM HOIST & TOWER CRANE QUIPMENT CO.,LTD located in HangZhou China is 1 of the biggest supplier and export of tower crane, luffing crane , topless crane , passenger hoist along with the spare parts for them. With 20 years' experience on tower crane rent , installation , repair and reconstruction, the company has more than 50 experienced mechanical and electrical engineer responsible for the installation guide, failure diagnosis, maintainance and reconstruction for the tower craneattheconstructionsite.
Having a long-term and good cooperative relationship with China's most famous manufacturer of tower crane and passenger hoist like YONGMAO, SANYO, ZheJiang SCM, Zoomlion, GJJ, BAODA,etc. The company can offer you the best quality original tower crane and passenger hoist with most competitive price.
Cooperative Partner:
Our Advantages:
Certificate:
FAQ:
1.Q:Are you a Manufacturer or Trading company?
A: We are a trading company and have our own factory. We have both the price advantage of the factory and the thoughtful service of the trading company; and the advantage of taking responsibility.
2.Q:How about your after-sale service?
A: we have quality guarantee with half-1 year once you purchase products from us.
3.Q:Can you satisfy my special requirement?
A:Definitely!We can make the products based on your requirement.
4.Q:Can I have sample to test the quality?
A:Yes, you can buy any sample to test the quality,our MOQ is 1 set.
5.Q:How do you transport cargoes?
A:We will transport the cargoes by container and bulk cargo ship, by sky and express.
How to use the pulley system
Using a pulley system is a great way to move things around your home, but how do you use a pulley system? Let's look at the basic equations that describe a pulley system, the types of pulleys, and some safety considerations when using pulleys. Here are some examples. Don't worry, you'll find all the information you need in 1 place!
Basic equations of pulley systems
The pulley system consists of pulleys and chords. When the weight of the load is pulled through the rope, it slides through the groove and ends up on the other side. When the weight moves, the applied force must travel nx distance. The distance is in meters. If there are 4 pulleys, the distance the rope will travel will be 2x24. If there are n pulleys, the distance traveled by the weight will be 2n - 1.
The mechanical advantage of the pulley system increases with distance. The greater the distance over which the force is applied, the greater the leverage of the system. For example, if a set of pulleys is used to lift the load, 1 should be attached to the load and the other to the stand. The load itself does not move. Therefore, the distance between the blocks must be shortened, and the length of the line circulating between the pulleys must be shortened.
Another way to think about the acceleration of a pulley system is to think of ropes and ropes as massless and frictionless. Assuming the rope and pulley are massless, they should have the same magnitude and direction of motion. However, in this case the quality of the string is a variable that is not overdone. Therefore, the tension vector on the block is labeled with the same variable name as the pulley.
The calculation of the pulley system is relatively simple. Five mechanical advantages of the pulley system can be found. This is because the number of ropes supporting the load is equal to the force exerted on the ropes. When the ropes all move in the same direction, they have 2 mechanical advantages. Alternatively, you can use a combination of movable and fixed pulleys to reduce the force.
When calculating forces in a pulley system, you can use Newton's laws of motion. Newton's second law deals with acceleration and force. The fourth law tells us that tension and gravity are in equilibrium. This is useful if you need to lift heavy objects. The laws of motion help with calculations and can help you better understand pulley systems.
Types of pulleys
Different types of pulleys are commonly used for various purposes, including lifting. Some pulleys are flexible, which means they can move freely around a central axis and can change the direction of force. Some are fixed, such as hinges, and are usually used for heavier loads. Others are movable, such as coiled ropes. Whatever the purpose, pulleys are very useful in raising and lowering objects.
Pulleys are common in many different applications, from elevators and cargo lift systems to lights and curtains. They are also used in sewing machine motors and sliding doors. Garage and patio doors are often equipped with pulleys. Rock climbers use a pulley system to climb rocks safely. These pulley systems have different types of pinions that allow them to balance weight and force direction.
The most common type of pulley is the pulley pulley system. The pulley system utilizes mechanical advantages to lift weight. Archimedes is thought to have discovered the pulley around 250 BC. in ancient Sicily. Mesopotamians also used pulleys, they used ropes to lift water and windmills. Pulley systems can even be found at Stonehenge.
Another type of pulley is called a compound pulley. It consists of a set of parallel pulleys that increase the force required to move large objects. This type is most commonly used in rock climbing and sailing, while composite pulleys can also be found in theater curtains. If you're wondering the difference between these 2 types of pulleys, here's a quick overview:
Mechanical Advantages of Pulley Systems
Pulley systems offer significant mechanical advantages. The ability of the system to reduce the effort required to lift weights increases with the number of rope loops. This advantage is proportional to the number of loops in the system. If the rope had only 1 loop, then a single weight would require the same amount of force to pull. But by adding extra cycles, the force required will be reduced.
The pulley system has the advantage of changing the direction of the force. This makes it easier to move heavy objects. They come in both fixed and mobile. Pulleys are used in many engineering applications because they can be combined with other mechanisms. If you want to know what a pulley can do, read on! Here are some examples. Therefore, you will understand how they are used in engineering.
Single-acting pulleys do not change direction, but compound pulleys do. Their mechanical advantage is six. The compound pulley system consists of a movable pulley and a fixed pulley. The mechanical advantage of the pulley system increases as the number of movable wheels decreases. So if you have 2 wheels, you need twice as much force to lift the same weight because you need a movable pulley.
The mechanical advantage of a pulley system can be maximized by adding more pulleys or rope lengths. For example, if you have a single pulley system, the mechanical advantage is 1 of the smallest. By using 2 or 3 pulleys, up to 5 times the mechanical advantage can be achieved. You can also gain up to 10 times the mechanical advantage by using multiple pulley systems.
The use of a single movable pulley system also adds to the mechanical advantage of the pulley system. In this case, you don't have to change the direction of the force to lift the weight. In contrast, a movable pulley system requires you to move the rope farther to generate the same force. Using a compound pulley system allows you to lift heavy loads with ease.
Safety Issues When Using Pulley Systems
Pulleys have an incredibly unique structure, consisting of a disc with a groove in the middle and a shaft running through it. A rope or cord is attached to 1 end of a pulley that turns when force is applied. The other end of the rope is attached to the load. This mechanical advantage means that it is much easier to pull an object using the pulley system than to lift the same object by hand.
Although pulley systems are a common part of many manufacturing processes, some employers do not train their workers to use them properly or install protection to prevent injury. It is important to wear proper PPE and follow standard laboratory safety practices during pulley system activities. Make sure any support structures are strong enough to handle the weight and weight of the rope or rope. If you do fall, be sure to contact your employer immediately.
