Tag Archives: electric pulley lift

China 1300lbs600kg Automatic Lift Electric Cable Hoist with Wireless Remote Control Electric Wire Rope Hoist pulley system

Applicable Industries: Constructing Materials Outlets, Machinery Mend Shops, Production Plant, Farms, little helical equipment f collection parallel shaft helical gearbox gear box electric powered motor with reducer rc helical transmission gearbox Home Use, Retail, Construction works , Vitality & Mining
Showroom Spot: None
Situation: New
Electricity Supply: Electric powered
Sling Kind: Wire Rope
Carry Pace: 4-ten m/min
Warranty: 1 12 months, Huge Damping Flexible Rubber Tyre Coupling 1 Calendar year
Equipment Check Report: Offered
Online video outgoing-inspection: Supplied
Advertising and marketing Variety: Scorching Merchandise 2571
Warranty of core factors: 1 12 months
Main Parts: Motor
Weight (KG): 38 kg
Merchandise name: Mini Electrical Hoist
Capacity: three hundred kg-600 kg
voltage: 220v/230v/240v
lifting velocity: 4-10 m/min
Colour: customized Colour Satisfactory
MOQ: 2 Sets
Sort: PA type
Hook: Cast
Management Strategy: Pendant +Remote(Tailored)
Packaging Particulars: picket

Mini electrical hoist Mini electrical hoist Potential : a hundred KG-990 KG Lifting Top:6M,12M, MAX 30MVoltage:220v,380v Protection class: IP45 , substantial force oil cost-free biogas compressor pump for medical oxygen concentrator 5L air compressor IP54 MOQ: 1 piece is acceped Specialized Parameters

ModelPA300PA600PA800PA1200
Motor energy(W)600120013001800
Capacity(kg)150-three hundred300-600400-800600-990
Listing top(M)6/126/twelve6/126/twelve
Packing(MM)470*370*160520*450*a hundred and seventy520*450*one hundred seventy560*250*350
Net excess weight(KG)24/2236/3438/3633/32
Item details Factory&Packing

pulley

Types of Pulley Systems

If you've ever tried to lift a pail of water, you've probably seen the pulley system in action. Pulleys are extremely useful tools for everything from household appliances to heavy industrial machinery. Different kinds of pulley systems are classified according to their amount of motion. Some types have fixed axes, while others have movable axes. Some common uses of pulleys are listed below.

two-wheel pulley

Pulleys are complex structures with thin-walled and thick-walled sections. Therefore, they require specific forging designs. The tool concept for the production of pulleys is shown in Figure 11.6. Using the generated tool, the pulley can be forged into different shapes. Process parameters must be optimized based on material, surface quality and metallographic analysis.
Pulleys are wheels mounted on shafts. Its main function is to assist the movement of heavy objects. A single-wheel pulley can change the direction of the force, enabling a person to pull heavy objects. A dual-wheel pulley distributes the weight evenly across both wheels, allowing it to lift the same weight with half the effort.
The mechanical advantage of a two-wheel pulley is that it reduces the force required by about half. A 100 kg object can be lifted with a force of 500 Newtons. The mechanical advantage of a pulley with two wheels is twice that of a single-wheel pulley. However, care should always be taken when using two-wheel pulleys.
Two-wheel pulleys can be fixed or movable. A single wheel pulley can only change direction when the load is placed on one side of the wheel. Two-wheel pulleys change direction when lifting a load, requiring half the force. Live wheels are better for heavier loads. The movable pulley can be adjusted with the load, and the load distribution is more uniform. Active pulleys can be used with single-rope or two-wheel pulleys.
A pulley system with two wheels is called a compound pulley. This type of pulley system has a complex design that reduces the force required to move the load. Two-wheel pulleys are common in industrial and construction environments. These pulleys require a lot of space to install and operate. Additionally, they require regular maintenance to avoid wear and tear.

composite pulley

Compound pulleys are used to increase lift. One fixed pulley is attached to the overhead while the other fixed pulley is attached to the load. This setup minimizes the force required to lift weights, allowing you to lift heavier weights. There are several different types of compound pulleys, each with their own strengths and weaknesses. Below are some examples of their application. Some of the most common are listed below.
Composite pulleys are usually made from two different types of wheels. The first one is fixed and secure. The second type, movable, is attached to something that moves. The third type, compound pulley, is a combination of a movable pulley and a fixed pulley. Below are three types of comparisons. The table below compares them and explains their advantages and disadvantages. Composite pulleys are the most versatile of the three.
The number of sheave segments that make up the composite sheave system increases the mechanical advantage of the system. Each segment adds one percent of the total weight, and the ideal mechanical advantage is two or more. So a compound pulley with four segments will lift three-quarters of the weight. This is because the force applied to the load is multiplied by four. The result is a better boost.
While composite pulleys have many uses, they are most commonly used on larger sailboats. These pulleys work by changing the direction of the control wire or by changing the mechanical force of the rope. They also make it easier to lift heavier objects. Composite pulleys are more expensive than simple pulleys, so consider your needs before buying. The advantages of composite pulleys outweigh the disadvantages.
A basic compound pulley is a device consisting of two wheels with fixed points. Ropes are looped around the wheels and are used to lift heavy objects. When you pull on the rope, the rope pulls the two wheels closer together. Serious injury could result if this equipment is installed incorrectly. Never exceed the lifting capacity of pulleys and other safety devices that may be attached. When using pulleys, be sure to follow the instructions on the mounting hardware to avoid accidents.
pulley

Fixed pulley

Moving pulleys and fixed pulleys are different types of mechanical devices. The movable pulley moves with the object it is used to lift. Because it attaches to the object it is used to lift, it is great for lifting heavy objects. These devices are used in construction cranes and multipurpose elevators. There are many different types of pulleys, and their uses vary widely. Below is a brief overview of these devices.
The simplest pulley set consists of a wheel that is mounted on the ceiling. A rope is attached at one end and a person pulls at the other end. The rope is strong enough to keep a person standing while lifting weights. It takes about 200 Newtons of force to lift a 20 kg weight. In contrast, a movable pulley requires a force of 1000N, which makes it easier to lift heavy objects.
Fixed pulleys are another common lifting device. They work by using ropes and slotted wheels attached to the object to be lifted. These devices are convenient to use because they are easy to set up. Moving the scroll wheel doesn't change direction, so it's easier to move objects without putting too much pressure on the back. Unlike a moving rope, a moving object will feel much lighter than its actual weight.
Fixed pulleys are widely used in construction and agriculture. Fixed pulleys can help lift supplies and equipment from scaffolding. These items are often heavy and difficult to lift directly. Fixed pulleys at the top of the scaffolding will allow people at the bottom to lift objects more easily. As a result, those at the bottom are less stressed and more productive. Fixed pulleys will save time and money compared to moving ropes.
Composite pulleys combine fixed and movable pulleys to increase the power of movement. A compound pulley system uses both types of pulleys and enables a person to change direction by reversing the direction of a force. The compound pulley system will save time and effort as the user only has to put in half the effort. Unlike moving ropes, composite pulleys are easy to adjust and are the most versatile system on the market.
pulley

Blocks and tackles

A pulley block system is a rope hoist that uses a set of pulleys mounted on a frame. The blocks are arranged in a row, and the threaded rope is called a pulley. Pulley systems help amplify the tension of the rope and are common in sailboats, cranes and drilling rigs. However, these systems are not without drawbacks.
The pulley pulley system can be equipped with as many pulleys as required. This method allows a person to lift heavy objects. The pulley block system can contain the required number of pulleys to achieve the desired height. The main disadvantage of pulley systems is that they create a lot of friction on the pulley shaft.
Pulley systems use two types of pulleys. A movable pulley is attached to the load, allowing it to move with the load. On the other hand, fixed pulleys are fixed on fixed points. Therefore, a pulley block system may consist of multiple pulleys mounted on a shaft. For example, the two pulleys attached to the shaft each have their own mechanical advantages.
Several types of tackle systems have been developed in recent centuries. The most basic is the gun mount, which uses two pulleys to lift the load. The mechanical advantage of such a system is two to three times the distance required by the rope to move the load. Depending on how they're assembled, the system can lift 400 pounds with 80 or 100 pounds of force.
Another type of pulley is a combination of multiple wheels. The wheels on pulleys are supported by a housing or frame. The chain is attached to the pulley, and the rope is pulled to lift it. A combined pulley system will have multiple wheels. As the load increases, the force on the pulley also increases. This approach is generally more expensive than intercept and intercept systems.

China 1300lbs600kg Automatic Lift Electric Cable Hoist with Wireless Remote Control Electric Wire Rope Hoist pulley system China 1300lbs600kg Automatic Lift Electric Cable Hoist with Wireless Remote Control Electric Wire Rope Hoist pulley system
editor by Cx 2023-07-04

China wholesaler Portable Ty 1 Series Small Micro Electric Hoist 1.5 Ton 2 Ton Electric Chain Block Pulley Block Lift near me supplier

Product Description

Portable Ty 1 Series Small Micro Electric Hoist 1.5 Ton 2 Ton Electric Chain Block Pulley Block Lift

TY1-Single Speed

Model TY1-Single Speed
0.5-01S 01-01S 02-01S 02-02S 03-01S 03-02S 05-02S
Capacity(t) 0.5t 1t 2t 3t 5t
Lifting Speed (m/min) 7.2 6.6 6.6 3.3 5.4 4.4 2.7
Motor power (Kw) 0.8 1.5 3 1.5 3 3 3
Rotating speed(r/min) 1440r/min
Insulation Grade Fgrade
Power supply 3phase,200V-690V,50/60Hz
Control voltage(V) 24V/36V/48V
No.of chain 1 1 1 2 1 2 2
Specof load chain Φ6.3 Φ7.1 Φ10.0 Φ11.2 Φ11.2 Φ10.0 Φ11.2
Netweight(Kg) 47 61 115 75 122 132 152

 TY1-Dual Speed

Model TY1-Dual Speed
0.5-01D 01-01D 02-01D 02-02D 03-01D 03-02D 05-02D
Capacity(t) 0.5t 1t 2t 3t 5t
Lifting Speed (m/min) 7.2/2.4 6.9/2.3 6.9/2.3 3.3/1.1 5.4/1.8 4.5/1.5 2.7/0.9
Motor power (Kw) 0.8/0.27 1.8/0.6 3.0/1.0 1.8/0.6 3.0/1.0 3.0/1.0 3.0/1.0
Rotating speed(r/min) 2880/960
Insulation Grade Fgrade
Power supply 3phase,200V-690V,50/60Hz
Control voltage(V) 24V/36V/48V
No.of chain 1 1 1 2 1 2 2
Specof load chain Φ6.3 Φ7.1 Φ10.0 Φ11.2 Φ11.2 Φ10.0 Φ11.2
Netweight(Kg) 54 74 150 155 159 168 184

 

FAQ
1. What about the price?
Our trading module prices are for reference only. If you are interested, please send us an inquiry as soon as possible and look forward to cooperating with you.
2. Is your products customized?
Yes, because the working condition are different, all our products can be customized depending on detail requirement! 
3.How many operating methods for my selection?
The standard operating methods we provide is pendent controller with push buttons. Meanwhile, we can also provide the remote control with push buttons. You can choose any of them, just tell us!
4.About sample?
The buyer should offer the cost and freight, if the quantity is big then can turn back all of it after placing the order.
5.How long does it take to receive my order?
About 30 Days from we get the down payment, 20 days for sample order.
6. What's your quality guarantee?
We have different kinds of products which can meet different quality standard. Our QC department will teset products before shipping. We have 100% quality guarantee to customers. We will be responsible for any quality problem.
7. What advantages we have?
Rich experience: We have more than 20 years experience in this industry. Each of our product must be strictly tested before delivery. Unqualified products are not allowed to delivery.
8. How about the after sale service?
We promise 1 year guaranty, life-time technical support! We have a strong team special for after sale service. We can arrange engineers to do service for you. And we insist 'Quality is Life'.

Electric hoist Supplier and Manufacturer
Product:electric chain hoist,manual chain hoist,lever hoist,mini hoist,electric wire rope hoist,hand pallet truck,webbing slings.

The importance of pulleys

A pulley is a wheel that rides on an axle or axle. The purpose of the pulley is to change the direction of the tensioning cable. The cable then transfers the power from the shaft to the pulley. This article explains the importance of pulleys and demonstrates several different uses for this machine. Also, see the Mechanical Advantages section below for the different types. let's start.
pulley

simple machine

A simple pulley machine is a device used to transfer energy. It consists of a wheel with flexible material on the rim and a rope or chain tied to the other end. Then lift the load using the force applied to the other end. The mechanical advantage of this system is one, as the force applied to the load is the same as the force on the pulley shaft.
A simple pulley machine has many benefits, from the ability to build pyramids to building modern buildings with it. Pulleys are also popular with children because they can perform simple tasks such as lifting toys onto a slide, sliding them off the slide, and lifting them up again. These activities, called "transportation" by child development theorists, allow them to learn about the physics of simple machines in the process.
The mechanism works by using cables to transmit force. The cable is attached to 1 side of the pulley and the other side is pulled by the user. Lift the load by pulling on 1 end and the other end of the rope. Simple pulley machines have many commercial and everyday applications, including helping move large objects. They can be fixed or movable, and can be a combination of both. The present invention is a great tool for any beginner or engineer.

axis

The axle wheel is the basic mechanical part that amplifies the force. It may have originally appeared as a tool to lift buckets or heavy objects from a well. Its operation is demonstrated by large and small gears attached to the same shaft. When applied to an object, the force on the large gear F overcomes the force W on the pinion R. The ratio of these 2 forces is called the mechanical advantage.
The ideal mechanical advantage of shaft pulleys is their radius ratio. A large radius will result in a higher mechanical advantage than a small radius. A pulley is a wheel through which a rope or belt runs. Often the wheels are interconnected with cables or belts for added mechanical advantage. The number of support ropes depends on the desired mechanical advantage of the pulley.
In the design of the axle wheel, the axle is the fulcrum and the outer edge is the handle. In simple terms, wheels and axle pulleys are improved versions of levers. The axle pulley moves the load farther than the lever and connects to the load at the center of the axle. Shaft pulleys are versatile and widely used in construction.

rope or belt

Ropes or pulleys are mechanical devices used to move large masses. The rope supports a large mass and can be moved easily by applying a force equal to 1 quarter of the mass to the loose end. Quad pulleys have 4 wheels and provide the mechanical advantage of 4 wheels. It is often used in factories and workshops. It is also a popular choice in the construction industry. If you are installing a pulley in your vehicle, be sure to follow these simple installation instructions.
First, you need to understand the basics of how a rope or pulley works. The machine consists of 1 or more wheels that rotate on an axle. The rope or belt is wrapped around the pulley and the force exerted on the rope is spread around the pulley. It then transfers the force from 1 end of the rope to the other. The pulley system also helps reduce the force required to lift objects.
Another common rope or pulley is the differential pulley. This is similar to a rope pulley, but consists of 2 pulleys of different radii. The tension in the 2 halves of the rope supports half the load that the live pulley should carry. These 2 different types of pulleys are often used together in composite pulley systems.
pulley

Mechanical advantage

The mechanical advantage is the ratio of the force used to move the load through the pulley system to the force applied. It has been used to measure the effectiveness of pulley systems, but it also requires assumptions about applied forces and weights. In a simple 1:1 pulley system, the weight lifting the weight is the same as the weight of the person pulling the weight. Adding mechanical advantage can help make up for the lack of manpower.
This advantage stems from the mechanical properties of simple machines. It requires less force and takes up less space and time to accomplish the same task. The same effect can also be achieved by applying less force at a distance. Furthermore, this effect is called the output force ratio. The basic working principle of a pulley system is a rope with a fixed point at 1 end. The movable pulley can be moved with very little force to achieve the desired effect.
The load can be moved through the vertical entry using a simple pulley system. It can use a simple "pulley block" system with a 2:1 "ladder frame" or a 4:1 with dual pulleys. This can be combined with another simple pulley system to create a compound pulley system. In this case, a simple pulley system is pulling another pulley, giving it a 9:1 mechanical advantage.

Commonly used

You've probably seen pulley systems in your kitchen or laundry room. You probably already use it to hang clothes on an adjustable clothesline. You may have seen motor pulleys in the kitchens of commercial buildings. You might even have seen 1 on a crane. These machines use a pulley system to help them lift heavy loads. The same goes for theaters. Some pulleys are attached to the sides of the stage, enabling the operator to move up and down the stage.
Pulley systems have many uses in the oil and petroleum industry. For example, in the oil and gas industry, pulley systems are used to lay cables. They are arranged in a pulley structure to provide mechanical energy. When the rope is running, 2 pulleys are hung on the derrick to facilitate smooth running. In these applications, pulleys are very effective in lifting heavy objects.
A pulley is a simple mechanical device that converts mechanical energy into motion. Unlike chains, pulleys are designed to transfer power from 1 location to another. The force required to lift an object with a pulley is the same as that required by hand. It takes the same amount of force to lift a bucket of water, but it's more comfortable to pull sideways. A bucket of water weighs the same as when lifted vertically, so it's easy to see how this mechanism can be useful.
pulley

Safety Notice

When using pulleys, you should take several safety precautions to keep your employees and other workers on the job site safe. In addition to wearing a hard hat, you should also wear gloves to protect your hands. Using pulleys can lead to a variety of injuries, so it's important to keep these precautions in mind before using pulleys. Here are some of the most common:
Pulleys are an important piece of equipment to have on hand when lifting heavy objects. Pulleys not only reduce the force required to lift an object, but also the direction of the force. This is especially important if you are lifting heavy objects, such as a lawn mower or motorcycle. Before starting, it is important to make sure that the anchoring system can support the full weight of the object you are lifting.
When using a pulley system, make sure the anchor points are adequate to support the load. Check with the pulley manufacturer to determine the weight it can safely lift. If the load is too large, composite pulleys can be used instead. For vertical lifts, you should use a sprocket set and wear personal protective equipment. Safety precautions when using pulleys are critical to worker health and safety.

China wholesaler Portable Ty 1 Series Small Micro Electric Hoist 1.5 Ton 2 Ton Electric Chain Block Pulley Block Lift near me supplier China wholesaler Portable Ty 1 Series Small Micro Electric Hoist 1.5 Ton 2 Ton Electric Chain Block Pulley Block Lift near me supplier

China Good quality Motor PA1000 Small Pulley CZPT PA800 with 12m Height Doubleline Lifting Applications Mini Electric Hoist Lift with Best Sales

Product Description

Motor Pa1000 Small Pulley CZPT Pa800 With 12m Height Doubleline Lifting Applications Mini Electric Hoist Lift


    Model        Usage        Voltage      Power(kw)    Capacity(kg) Lifting Speed(m/min.) Lifting Height(m)     Qty/CTN
(pcs)		 Packing Size(cm) G.W/N.W(kg)
    PA200L Single Hook AC
220V/230V
50HZ/60HZ		 510 100 10 12 2 38x32x25 22.5/22
Double Hook 200 5 6
    PA250L Single Hook 530 125 10 12 23/22
Double Hook 250 5 6
    PA300L Single Hook 600 150 10 12 23.5/23
Double Hook 300 5 6
    PA400L Single Hook 980 200 10 12 45x34x27 33.5/32.5
Double Hook 400 5 6
    PA500L Single Hook 1571 250 10 12 33.5/32.5
Double Hook 500 5 6
    PA600L Single Hook 1200 300 10 12 35/34
Double Hook 600 5 6
    PA800L Single Hook 1300 400 10 12 38/37
Double Hook 800 5 6
   PA1000L Single Hook 1600 500 8 12 1 54x25x32 32/32
Double Hook 1000 4 6
   PA1200L Single Hook 1900 600 8 12 32.5/32.5
Double Hook 1200 4 6

 

FAQ
1. What about the price?
Our trading module prices are for reference only. If you are interested, please send us an inquiry as soon as possible and look forward to cooperating with you.
2. Is your products customized?
Yes, because the working condition are different, all our products can be customized depending on detail requirement! 
3.How many operating methods for my selection?
The standard operating methods we provide is pendent controller with push buttons. Meanwhile, we can also provide the remote control with push buttons. You can choose any of them, just tell us!
4.About sample?
The buyer should offer the cost and freight, if the quantity is big then can turn back all of it after placing the order.
5.How long does it take to receive my order?
About 30 Days from we get the down payment, 20 days for sample order.
6. What's your quality guarantee?
We have different kinds of products which can meet different quality standard. Our QC department will teset products before shipping. We have 100% quality guarantee to customers. We will be responsible for any quality problem.
7. What advantages we have?
Rich experience: We have more than 20 years experience in this industry. Each of our product must be strictly tested before delivery. Unqualified products are not allowed to delivery.
8. How about the after sale service?
We promise 1 year guaranty, life-time technical support! We have a strong team special for after sale service. We can arrange engineers to do service for you. And we insist 'Quality is Life'.

Electric hoist Supplier and Manufacturer
Product:electric chain hoist,manual chain hoist,lever hoist,mini hoist,electric wire rope hoist,hand pallet truck,webbing slings.

 

How to Assemble a Pulley System

A pulley is a wheel that rotates on a shaft or shaft to support the movement of a taut cable. Pulleys allow power to be transmitted from the shaft to the cable.
pulley

Simple pulley

The simplest theory of operation of a pulley system assumes that the rope and weight are weightless and that the rope and pulley are not stretched. Since the force on the pulley is the same, the force on the pulley shaft must also be zero. Therefore, the force exerted on the pulley shaft is also distributed evenly between the 2 wires passing through the pulley. The force distribution is shown in Figure 1.
The use of simple pulleys is as old as history. Before the Industrial Revolution, people relied on muscle strength to carry heavy loads. Pulleys, levers and ramps make this possible. Today, we can see pulleys in a variety of systems, from exercise equipment to garage doors, and even rock climbers use them to help them reach greater heights. As you can see, these simple machines have been around for centuries and are used in everyday life.
Another simple pulley system is the pulley system. In this system, there is a fixed pulley at the top and a movable pulley at the bottom. The 2 pulleys are connected by a rope. This combination reduces the amount of work required to lift the load. Additionally, the ropes used in this system are usually made of rope and woven through the individual wheels of the pulley drum.
A pulley is an ingenious device that distributes weight evenly and can be used to lift heavy objects. It is easy to build and can be easily modified for a wide range of activities. Even young children can make their own with very few materials. You can also use simple household items such as washing machines, thin textbooks and even chopsticks. It's very useful and can be a great addition to your child's science and engineering activities.
The simplest pulley system is movable. The axis of the movable pulley can move freely in space. The load is attached to 1 end of the pulley and the other end to the stationary object. By applying force on the other end of the rope, the load is lifted. The force at the other end of the rope is equal to the force at the free end of the pulley.
Another form of pulley is the compound pulley. Compound pulleys use 2 or more wheels to transmit force. Compound pulleys have 2 or more wheels and can lift heavier objects. Dim is POLE2.
pulley

tapered pulley

It is important to clean and align the bolt holes before assembling the tapered pulley. The screws should be lubricated and the threads cleaned before installation. To install the pulley, insert it into the shaft keyway. The keyway should be aligned with the shaft hole to prevent foreign matter from entering the pulley. Then, alternately tighten the bolts until the pulley is tightened to the desired torque.
A tapered pulley is a basic structure. The pulley belt is arranged across 4 steps. Installed between the headstock casting and the main shaft, it is often used in the paper industry. It integrates with printing machinery and supports assembly lines. These pulleys are also available in metric range options, eliminating the need for ke-waying or re-drilling. They are easy to install, and users can even customize them to suit their needs.
CZPT Private Limited is a company that provides unique products for various industries. This large product is used for many different purposes. Also, it is manufactured for industrial use. The company's website provides detailed specifications for the product. If you need a tapered pulley, contact a company in your area today to purchase a quality product!
Tapered pulleys are vital to paper mill machinery. Its special design and construction enable it to transmit power from the engine source to the drive components. The advantages of this pulley include low maintenance costs and high mechanical strength. Cone wheel diameters range from 10 inches to 74 inches. These pulleys are commonly used in paper mills as they offer low maintenance, high mechanical strength and low wear.
A tapered sleeve connects the pulley to the shaft and forms an interference fit connector. The taper sleeve is fixed on the shaft with a key, and the corresponding inner hole is fixed on the shaft with a key. These features transmit torque and force to the pulley through friction. This allows the tapered pulley to move in a circular motion. The torque transfer characteristics of this pulley are most effective in high speed applications.
The sleeve is the most important part when assembling the tapered pulley. There is an 8-degree taper inside the cone, which is closely connected to the inner surface of the pulley. Taper sleeves and pulleys are interchangeable. However, tapered pulleys can be damaged after prolonged use.
pulley

pulley pulley system

A pulley pulley system is a great way to move heavy objects. These systems have been around for centuries, dating back to the ancient Greeks. This simple mechanism enables a person to lift heavy objects. These blocks are usually made of rope, and the number of turns varies for different types of rope. Some blocks have more cords than others, which creates friction and interferes with the easy movement of the lifting system.
When using a pulley pulley, the first thing to decide is which direction to pull. Unfavorable rigging means pulling in the opposite direction. In theory, this method is less efficient, but sometimes requires a certain amount of work space. The benefit is that you will increase the mechanical advantage of the pulley by pulling in the opposite direction. So the interception and tackle system will give you more of a mechanical advantage.
Pulley pulleys are an excellent choice for lifting heavy objects. The system is simple to install and users can easily lift objects without extensive training. Figure 3.40 shows a pulley in action. In this photo, the person on the left is pulling a rope and tying the end of the rope to a weight. When the rope is attached to the load, the rope will be pulled over the pulley and pulley.
The blocks on the blocks are attached to the ends of the rope. This creates unique lifting advantages compared to single-line systems. In Figure 3, the tension of each thread is equal to one-third of the unit weight. When the rope is pulled over the pulley, the force is divided equally between the 2 wires. The other pulley reverses the direction of the force, but that doesn't add any advantage.
Use pulleys to reduce traction and load. The weight of the load has not changed, but the length of the rope has increased. Using this method, lifting the load by pulling the rope 4 times reduces the force required to lift 1 foot. Likewise, if the pulley system had 4 pulleys instead of three, the length of the rope would be tripled.
The system can transmit loads in any direction. Rope length is determined by multiplying the distance from the fixed block to the load by the mechanical advantage. If the mechanical advantage is 3:1, then passing the rope through the pulley 3 times will produce the required traction distance. Also, the length of the rope will depend on the mechanical advantage, so if the load is 3 times the length of the rope, it will be more than 3 times the required length.

China Good quality Motor PA1000 Small Pulley CZPT PA800 with 12m Height Doubleline Lifting Applications Mini Electric Hoist Lift with Best SalesChina Good quality Motor PA1000 Small Pulley CZPT PA800 with 12m Height Doubleline Lifting Applications Mini Electric Hoist Lift with Best Sales