China High Quality Pulley/Head Sheave for Mine Hoist/Winder pulley design

Product Description

2jk Collection Mining Hoist Winch Parts for Coal Mine

 

Introduction:
Mine hoist can be divided into 2 sorts 1 variety is JKE series one rope mining hoist and the other is Multi-rope friction hoist. 
This series mine hoist which includes 2m-5m one tubular and double tubular kinds, and can be utilised for mining hoist, staff lifting and content and equipment descending from vertical shafts or inclined shafts of coal, steel and nonmetal ores.
JK mine hoist is mainly used in inclined roadways and wells of coal mines, metal mines and non-metal mines to hoist or lower personnel and materials.

Specialized parameters:

Model Drum Tension
PF
Tension 
Differe
 
Rope
Diameter
Lift height (m) Max 
Pace
Reduce 
pace ratio
Motor
Speed
 
Number Dia Width one-layer 2-layer 3-layer
 
   
m KN mm m m/s r/min
JK-2×1.5/20 1 2. 1.5 62 24 305 650 1571 5.two 20. 1000
JK-2×1.5/31.five 31.5
JK-2×1.8/20 1.80 375 797 1246 twenty.
JK-2×1.8/31.five 31.5
JK-2.5×2/20 2.five 2.00 83 28 448 945 1475 5. twenty. 750
JK-2.5×2/31.5 31.5
JK-2.5×2.3/20 2.thirty 525 1100 1712 twenty.
JK-2.5×2.3/31.five 31.five
JK-3×2.2/twenty 3. 2.20 135 36 458 966 1513 6. twenty.
2JK-2×1/eleven.two 2 2. 1.00 62 40 24 182 406 652 7. 11.two
2JK-2×1/20 20.
2JK-2×1/31.five 31.5
2JK-2×1.twenty five/11.two 1.25 242 528 838 11.two
2JK-2×1.25/20 twenty.
2JK-2×1.twenty five/31.5 31.5
2JK-2.5×1.2/11.2 2.five 1.twenty 83 65 28 843 8.eight 11.two
2JK-2.5×1.2/20 twenty.
2JK-2.5×1.2/31.5 31.5
2JK-2.5×1.5/eleven.two 2.5 1.50 83 65 28 319 685 1080 8.8 eleven.two
2JK-2.5×1.5/20 20.
2JK-2.5×1.5/31.five 31.five
2JK-3×1.5/eleven.2 3. 135 90 36 289 624 994 10.five 11.2
2JK-3×1.5/20 20.
2JK-3×1.5/31.five 31.5
2JK-3×1.8/11.2 1.80 362 770 1217 eleven.2
2JK-3×1.8/20 twenty.
2JK-3×1.8/31.five 31.five
2JK-3.5×1.7/eleven.two 3.five 1.70 170 115 40 349 746 12.six eleven.2
2JK-3.5×1.7/20 twenty.
2JK-3.5×2.1/11.2 2.10 450 950 eleven.two
2JK-3.5×2.1/eleven.two 20.
2JK-4×2.1/10 4. 245 160 48 421 891 12.six 10. 600
2JK-4×2.1/11.two 11.two
2JK-4×2.1/twenty 20.
2JK-5×2.3/10 5. 2.30 280 180 52 533 12 10. 500
2JK-5×2.3/eleven.2  

Possible defects:

Defect Causes
Unfilled sections Insufficient material
Low pouring temperature
Porosity Melt temperature is too high
Non-uniform cooling rate
Sand has low permeability
Hot tearing Non-uniform cooling rate
Surface projections Erosion of sand mold interior
A crack in the sand mold
Mold halves shift

FAQ
Q: How about the good quality of your goods?
A: Our devices are manufactured strictly according to countrywide and worldwide specifications, and we just take a take a look at on every gear before delivery.
 
 
Q: How about the cost?
A: We are manufactory, and we can give you lower cost than people trade companies. Apart from, buyers from Made in China can get a discount.
 
Q: Do you provide following-sale provider?
A: Of course. The warranty time period of our machines is 1 12 months, and we have a expert following-sale group to immediately and extensively solve your issues.
 
Q: Do you supply equipment procedure training?
A: Of course. We can send out skilled engineers to the functioning website for tools set up, adjustment, and procedure coaching. All of our engineers have passports.

 

US $100-150
/ Ton
|
1 Ton

(Min. Order)

###

Certification: CE, ISO 9001:2008
Standard: ASME, BS, ANSI, GB, ASTM, DIN
Surface Treatment: Sand Blast
Manufacturing Process: Casting
Material: Alloy Steel
Name: Shaft Lifting

###

Customization:

###

Model Drum Tension
PF
Tension 
Differe
 
Rope
Diameter
Lift height (m) Max 
Speed
Reduce 
speed ratio
Motor
Speed
 
Number Dia Width 1-layer 2-layer 3-layer
 
   
m KN mm m m/s r/min
JK-2×1.5/20 1 2.0 1.5 62 24 305 650 1025 5.2 20.0 1000
JK-2×1.5/31.5 31.5
JK-2×1.8/20 1.80 375 797 1246 20.0
JK-2×1.8/31.5 31.5
JK-2.5×2/20 2.5 2.00 83 28 448 945 1475 5.0 20.0 750
JK-2.5×2/31.5 31.5
JK-2.5×2.3/20 2.30 525 1100 1712 20.0
JK-2.5×2.3/31.5 31.5
JK-3×2.2/20 3.0 2.20 135 36 458 966 1513 6.0 20.0
2JK-2×1/11.2 2 2.0 1.00 62 40 24 182 406 652 7.0 11.2
2JK-2×1/20 20.0
2JK-2×1/31.5 31.5
2JK-2×1.25/11.2 1.25 242 528 838 11.2
2JK-2×1.25/20 20.0
2JK-2×1.25/31.5 31.5
2JK-2.5×1.2/11.2 2.5 1.20 83 65 28 843 8.8 11.2
2JK-2.5×1.2/20 20.0
2JK-2.5×1.2/31.5 31.5
2JK-2.5×1.5/11.2 2.5 1.50 83 65 28 319 685 1080 8.8 11.2
2JK-2.5×1.5/20 20.0
2JK-2.5×1.5/31.5 31.5
2JK-3×1.5/11.2 3.0 135 90 36 289 624 994 10.5 11.2
2JK-3×1.5/20 20.0
2JK-3×1.5/31.5 31.5
2JK-3×1.8/11.2 1.80 362 770 1217 11.2
2JK-3×1.8/20 20.0
2JK-3×1.8/31.5 31.5
2JK-3.5×1.7/11.2 3.5 1.70 170 115 40 349 746 12.6 11.2
2JK-3.5×1.7/20 20.0
2JK-3.5×2.1/11.2 2.10 450 950 11.2
2JK-3.5×2.1/11.2 20.0
2JK-4×2.1/10 4.0 245 160 48 421 891 12.6 10.0 600
2JK-4×2.1/11.2 11.2
2JK-4×2.1/20 20.0
2JK-5×2.3/10 5.0 2.30 280 180 52 533 12 10.0 500
2JK-5×2.3/11.2  

###

Defect Causes
Unfilled sections Insufficient material
Low pouring temperature
Porosity Melt temperature is too high
Non-uniform cooling rate
Sand has low permeability
Hot tearing Non-uniform cooling rate
Surface projections Erosion of sand mold interior
A crack in the sand mold
Mold halves shift
US $100-150
/ Ton
|
1 Ton

(Min. Order)

###

Certification: CE, ISO 9001:2008
Standard: ASME, BS, ANSI, GB, ASTM, DIN
Surface Treatment: Sand Blast
Manufacturing Process: Casting
Material: Alloy Steel
Name: Shaft Lifting

###

Customization:

###

Model Drum Tension
PF
Tension 
Differe
 
Rope
Diameter
Lift height (m) Max 
Speed
Reduce 
speed ratio
Motor
Speed
 
Number Dia Width 1-layer 2-layer 3-layer
 
   
m KN mm m m/s r/min
JK-2×1.5/20 1 2.0 1.5 62 24 305 650 1025 5.2 20.0 1000
JK-2×1.5/31.5 31.5
JK-2×1.8/20 1.80 375 797 1246 20.0
JK-2×1.8/31.5 31.5
JK-2.5×2/20 2.5 2.00 83 28 448 945 1475 5.0 20.0 750
JK-2.5×2/31.5 31.5
JK-2.5×2.3/20 2.30 525 1100 1712 20.0
JK-2.5×2.3/31.5 31.5
JK-3×2.2/20 3.0 2.20 135 36 458 966 1513 6.0 20.0
2JK-2×1/11.2 2 2.0 1.00 62 40 24 182 406 652 7.0 11.2
2JK-2×1/20 20.0
2JK-2×1/31.5 31.5
2JK-2×1.25/11.2 1.25 242 528 838 11.2
2JK-2×1.25/20 20.0
2JK-2×1.25/31.5 31.5
2JK-2.5×1.2/11.2 2.5 1.20 83 65 28 843 8.8 11.2
2JK-2.5×1.2/20 20.0
2JK-2.5×1.2/31.5 31.5
2JK-2.5×1.5/11.2 2.5 1.50 83 65 28 319 685 1080 8.8 11.2
2JK-2.5×1.5/20 20.0
2JK-2.5×1.5/31.5 31.5
2JK-3×1.5/11.2 3.0 135 90 36 289 624 994 10.5 11.2
2JK-3×1.5/20 20.0
2JK-3×1.5/31.5 31.5
2JK-3×1.8/11.2 1.80 362 770 1217 11.2
2JK-3×1.8/20 20.0
2JK-3×1.8/31.5 31.5
2JK-3.5×1.7/11.2 3.5 1.70 170 115 40 349 746 12.6 11.2
2JK-3.5×1.7/20 20.0
2JK-3.5×2.1/11.2 2.10 450 950 11.2
2JK-3.5×2.1/11.2 20.0
2JK-4×2.1/10 4.0 245 160 48 421 891 12.6 10.0 600
2JK-4×2.1/11.2 11.2
2JK-4×2.1/20 20.0
2JK-5×2.3/10 5.0 2.30 280 180 52 533 12 10.0 500
2JK-5×2.3/11.2  

###

Defect Causes
Unfilled sections Insufficient material
Low pouring temperature
Porosity Melt temperature is too high
Non-uniform cooling rate
Sand has low permeability
Hot tearing Non-uniform cooling rate
Surface projections Erosion of sand mold interior
A crack in the sand mold
Mold halves shift

The Mechanical Advantage of a Pulley

A pulley is an important tool for many tasks. The advantage that it offers over a hand-held mechanism is its mechanical advantage. In this article, we’ll discuss the types of pulleys and their applications. We’ll also look at the types of compound pulleys. And, of course, there’s a little bit about the mechanical advantage of a pulley. This article will help you decide whether this tool is right for your needs.
pulley

Mechanical advantage of a pulley

A pulley has a mechanical advantage over a lever because it is able to produce more force over longer distances. The mechanical advantage of a pulley sounds brilliant and could produce energy. But what exactly is this mechanical advantage? Let’s take a look. First, consider how a pulley works. A rope supports a 100kg mass, which requires 500 newtons of force to lift. If the rope supports a 100kg mass, two sections of rope can support that load. Using a pulley, you can lift the same weight with half the force.
A pulley’s ideal mechanical advantage is the ratio of the force applied to the total length of the rope. The larger the radius, the greater the mechanical advantage. A pulley made up of four rope segments has an ideal mechanical advantage of four. Therefore, a four-segment pulley would multiply the force applied by four. As the numbers on the rope segments are smaller than the total length of the rope, it would be better to use a compound pulley.
The mechanical advantage of a pulley can be calculated by using the T-method. The first step in calculating the mechanical advantage of a pulley is defining the force you need to lift. Then, divide that force by two to calculate the amount of force you need to lift the load. Once you know this amount, you can design a pulley to meet your needs. That way, you can achieve the perfect balance between the two types of pulleys.

Types of pulleys

The main function of the pulley is to change the direction of the force. The mechanical advantages of a single pulley are two. Ideally, two pulleys should have two or more mechanical advantages. The mechanical advantage of compound pulleys can be increased to two or more. The number of pulleys that make up the composite pulley will determine the mechanical advantage. Certain types of pulleys are combined in one housing.
A stepped pulley is a set of pulleys with stepped surfaces. Each face is anchored to the mid-axis in an ordered sequence. This design gives these pulleys their name. They are used to increase and decrease the speed of the driven pulley. Step pulleys are usually used in pairs. They can be straight or stepped, but usually come in pairs.
The three main types of pulleys are pulleys, rope pulleys, and chain pulleys. Pulley Pulley systems use mechanics to lift and lower heavy objects. The Greek historian Plutarch credits the invention of the pulley to Archimedes of ancient Sicily. The Mesopotamians used rope pulleys to lift water around 1500 BC, and Stonehenge is said to have been built using a rope pulley system.
pulley

Application of pulley system

The advantages of using a pulley system are numerous. The ability to lift heavy objects is a good example. The pulley system makes it easy for people to lift blocks and other large objects. It can be used in many different applications, from utility elevators to construction cranes. In addition, it is widely used on sailing boats. If you want to learn more about the benefits of a pulley system, keep reading!
You can use the pulley system to water flowers or water plants. Some of them even lowered the pot to make cleaning easier. Pendant lights are another great place to install a pulley system. Climbing and fishing are just some of the activities that utilize the pulley. They are great for fishing and gardening. And since they are so versatile, you can use the pulley system anywhere.
To get the most out of your pulley system, you must choose a product that has all of the above attributes. A high-quality pulley must have a large pulley diameter and be made of sturdy materials. The cables must also be properly supported in the pulleys to ensure a long service life for your investment. A good cable should have minimal cracks and be lubricated. These factors are the most important considerations when choosing a pulley system for your needs.

composite pulley

Composite pulley systems combine two or more movable pulleys. These systems maximize the force to move the weight and can also change direction so they can be used to lift weights. Composite pulley systems can be as simple or as complex as your needs. For example, a pulley pulley system uses multiple pulleys on each axis. This method is often used for hoisting building materials.
A compound pulley system has two or more rope segments, each of which is pulled up on a load. It can increase lift by making objects move faster. These systems are common on large sailboats and construction sites. Composite pulleys are also available for larger boats. Due to their versatility, they are versatile tools for construction sites and large sailboats. If you have their app, you should consider buying one.
The main advantage of composite pulleys is their versatility. You can use them to lift weights or use them to save energy. Composite pulleys are especially useful for lifting heavy objects. For example, you can tie a paper clip to the end of the rope and pull it up. The flag is then lifted into the air with the help of compound pulleys. Composite pulleys are a great invention and they are often used in construction.

security considerations

There are several safety considerations to consider when using pulleys. The first is Secure Workload (SWL). This value is a general guideline for the maximum weight a pulley can safely handle. It varies according to the height and angle of the pulley. Besides SWL, there are some other factors to consider. Consider each one before deciding on the pulley that best suits your needs.
Another safety consideration is the weight of the load. Since the highs of the pulley are higher than the lows, it doubles in weight. The weight of the high point should not exceed 4 kN. The safety factor is calculated by multiplying the strength of the pulley by the weight of the load. Secondary COD has a safety factor of 10:1 and bulletproof primary anchors should be used with pulleys.
If using a chain hoist, you must be trained in the appropriate type of lifting. It is important not to hang on the top hooks of the structure, nor to overload or rig the hooks with multiple slings. You should also avoid corroded or damaged chains, as they can cause the crane to jam or overload. A worn chain can even cause the load to drop.
pulley

Components of a pulley system

Proper design of the pulley system can increase the life of the cables and pulleys. Larger diameter cables should be selected as they are more durable than smaller diameter cables. The cables should also be supported in the pulley grooves. The pulley must be designed to be compatible with the cable and its lubrication should be optimal. Proper lubrication of cables and pulleys will ensure maximum durability and longevity.
The first type of pulley is called a fast pulley. These pulleys are used for quick start and stop of the machine. These pulleys are usually mounted in pairs on the countershaft of the machine. One pulley is tightly mounted on the machine shaft, while the other pulley is fitted with a free-spinning mechanism. When the machine is running, the belt is mounted on the tensioner pulley, and when it is stopped, the belt slides on the independent pulley.
Composite pulley sets reduce the overall effort required by reducing the size of the pulley. These are usually attributed to Archimedes. Flat pulleys are often used in flat belt driven transmission systems. These are used in high-speed, low-power applications. Flat pulley idlers are also used on the back of traditional V-belts.

China High Quality Pulley/Head Sheave for Mine Hoist/Winder     pulley design	China High Quality Pulley/Head Sheave for Mine Hoist/Winder     pulley design
editor by czh 2023-01-17

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