he pulley block saves effort and can pull objects with ease.
Pulleys are divided into fixed pulleys and moving pulleys.
Definition of fixed pulley:
The periphery of the pulley has grooves and the position of the shaft is fixed. The main function of the fixed pulley is to change the direction of force. On this basis, it is combined with the moving pulley. This simple pulley combination is widely used in daily life. Although fixed pulleys are not labor-saving, the use of fixed pulleys is generally combined with fixed pulleys. When pulling heavy objects, the fixed pulley can change the direction of force application, making it more convenient for everyone to exert force.
Application of fixed pulleys:
Every National Day, we will see a flag-raising ceremony. In fact, the pulley on the top of the flagpole is a fixed pulley. The flag-raising man exerted force downwards, and the national flag rose. Clothes racks and curtains involve fixed pulleys. Nowadays, many furniture and materials required for interior decoration of high-rise buildings must be used in high-rise buildings, but almost all properties do not allow elevators to transport these. Therefore, you use fixed pulleys to transport the furniture from the first floor slowly upward until you reach your house. Fixed pulleys are widely used in various machinery such as cranes, hoists, and elevators.
Principle of moving pulley:
When used, the pulley that moves along with the object is called a moving pulley. The moving pulley can be regarded as a labor-saving lever, O is the fulcrum of the lever, and the shaft of the pulley is the action point of resistance. The force of the lifted object on the shaft is resistance, and the force of the rope on the wheel is power. When lifting heavy objects, if the ropes on both sides are parallel, the power arm is twice the resistance arm; when the moving pulley is balanced, the power is half the resistance.
Application of moving pulleys:
Pulley sets are widely used in cranes, hoists, elevators and other machinery.
The pulley set is composed of a fixed pulley and a moving pulley. Using it can save effort and change the direction of force, and it can easily pull the animal body. The more moving pulleys are used in the pulley set, the more effort it saves. According to the installation method of pulley sets, they are divided into different-axis pulley sets and coaxial pulley sets.
The pulley sets used in life include: cranes, heavy objects lifting up and downstairs, bicycles, and elevators.
Precautions when using pulleys:
1. The pulley grooves should be smooth and smooth, and there must be no defects that damage the rope.
2. The pulley should be equipped with devices to prevent the rope from jumping.
3. Metal cast pulleys should be scrapped if the following situations occur:
(1) Cracked.
(2) The thickness of the wheel groove wall wear reaches 20% of the original size.
(3) The wheel grooves are unevenly worn up to 3mm.
(4) Due to wear, the diameter of the bottom of the wheel groove is reduced by 50% of the rope diameter.
（5）Other defects that damage the rope.
Pulleys are divided into fixed pulleys and moving pulleys.
Definition of fixed pulley:
The periphery of the pulley has grooves and the position of the shaft is fixed. The main function of the fixed pulley is to change the direction of force. On this basis, it is combined with the moving pulley. This simple pulley combination is widely used in daily life. Although fixed pulleys are not labor-saving, the use of fixed pulleys is generally combined with fixed pulleys. When pulling heavy objects, the fixed pulley can change the direction of force application, making it more convenient for everyone to exert force.
Application of fixed pulleys:
Every National Day, we will see a flag-raising ceremony. In fact, the pulley on the top of the flagpole is a fixed pulley. The flag-raising man exerted force downwards, and the national flag rose. Clothes racks and curtains involve fixed pulleys. Nowadays, many furniture and materials required for interior decoration of high-rise buildings must be used in high-rise buildings, but almost all properties do not allow elevators to transport these. Therefore, you use fixed pulleys to transport the furniture from the first floor slowly upward until you reach your house. Fixed pulleys are widely used in various machinery such as cranes, hoists, and elevators.
Principle of moving pulley:
When used, the pulley that moves along with the object is called a moving pulley. The moving pulley can be regarded as a labor-saving lever, O is the fulcrum of the lever, and the shaft of the pulley is the action point of resistance. The force of the lifted object on the shaft is resistance, and the force of the rope on the wheel is power. When lifting heavy objects, if the ropes on both sides are parallel, the power arm is twice the resistance arm; when the moving pulley is balanced, the power is half the resistance.
Application of moving pulleys:
Pulley sets are widely used in cranes, hoists, elevators and other machinery.
The pulley set is composed of a fixed pulley and a moving pulley. Using it can save effort and change the direction of force, and it can easily pull the animal body. The more moving pulleys are used in the pulley set, the more effort it saves. According to the installation method of pulley sets, they are divided into different-axis pulley sets and coaxial pulley sets.
The pulley sets used in life include: cranes, heavy objects lifting up and downstairs, bicycles, and elevators.
Precautions when using pulleys:
1. The pulley grooves should be smooth and smooth, and there must be no defects that damage the rope.
2. The pulley should be equipped with devices to prevent the rope from jumping.
3. Metal cast pulleys should be scrapped if the following situations occur:
(1) Cracked.
(2) The thickness of the wheel groove wall wear reaches 20% of the original size.
(3) The wheel grooves are unevenly worn up to 3mm.
(4) Due to wear, the diameter of the bottom of the wheel groove is reduced by 50% of the rope diameter.
（5）Other defects that damage the rope.
Pulleys are divided into fixed pulleys and moving pulleys.
Definition of fixed pulley:
The periphery of the pulley has grooves and the position of the shaft is fixed. The main function of the fixed pulley is to change the direction of force. On this basis, it is combined with the moving pulley. This simple pulley combination is widely used in daily life. Although fixed pulleys are not labor-saving, the use of fixed pulleys is generally combined with fixed pulleys. When pulling heavy objects, the fixed pulley can change the direction of force application, making it more convenient for everyone to exert force.
Application of fixed pulleys:
Every National Day, we will see a flag-raising ceremony. In fact, the pulley on the top of the flagpole is a fixed pulley. The flag-raising man exerted force downwards, and the national flag rose. Clothes racks and curtains involve fixed pulleys. Nowadays, many furniture and materials required for interior decoration of high-rise buildings must be used in high-rise buildings, but almost all properties do not allow elevators to transport these. Therefore, you use fixed pulleys to transport the furniture from the first floor slowly upward until you reach your house. Fixed pulleys are widely used in various machinery such as cranes, hoists, and elevators.
Principle of moving pulley:
When used, the pulley that moves along with the object is called a moving pulley. The moving pulley can be regarded as a labor-saving lever, O is the fulcrum of the lever, and the shaft of the pulley is the action point of resistance. The force of the lifted object on the shaft is resistance, and the force of the rope on the wheel is power. When lifting heavy objects, if the ropes on both sides are parallel, the power arm is twice the resistance arm; when the moving pulley is balanced, the power is half the resistance.
Application of moving pulleys:
Pulley sets are widely used in cranes, hoists, elevators and other machinery.
The pulley set is composed of a fixed pulley and a moving pulley. Using it can save effort and change the direction of force, and it can easily pull the animal body. The more moving pulleys are used in the pulley set, the more effort it saves. According to the installation method of pulley sets, they are divided into different-axis pulley sets and coaxial pulley sets.
The pulley sets used in life include: cranes, heavy objects lifting up and downstairs, bicycles, and elevators.
Precautions when using pulleys:
1. The pulley grooves should be smooth and smooth, and there must be no defects that damage the rope.
2. The pulley should be equipped with devices to prevent the rope from jumping.
3. Metal cast pulleys should be scrapped if the following situations occur:
(1) Cracked.
(2) The thickness of the wheel groove wall wear reaches 20% of the original size.
(3) The wheel grooves are unevenly worn up to 3mm.
(4) Due to wear, the diameter of the bottom of the wheel groove is reduced by 50% of the rope diameter.
（5）Other defects that damage the rope.
Inquiry
Please leave us your requirements, we will contact you soon.