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What is the transmission ratio
In a mechanical transmission system, the ratio of the angular velocity or rotational speed of the driving wheel at the beginning and the driven wheel at the end. Transmission ratio (i) = ratio of driving wheel speed (n1) to driven wheel speed (n2) = inverse ratio of gear index circle diameter = ratio of driven […]
Types of mechanical transmission
There are many forms of mechanical transmission, which can be divided mainly into two categories: 1. Friction transmission that transmits power and motion by friction between parts, including belt transmission, rope transmission and friction wheel transmission. Friction transmission is easy to achieve stepless speed change, and it can mostly adapt to transmission occasions with large […]
Form and types of Gear transmission
Gear transmission types: As per the mutual position of the two wheel axes, gear transmission can be divided into plane gear transmission and space gear transmission. According to the type of gear transmission: 1. According to the relative position of the two shafts and the direction of the gear teeth, it can be divided into […]
How to Find Gear Modification Coefficient
How to calculate gear modification coefficient: 1. Total displacement coefficient: 2. Coefficient of variation of center distance: 3. Coefficient of change of addendum height: 4. The modification coefficient table of the number of teeth z=8～20 cylindrical gear:
What is the gear modification coefficient
The standard gear transmission has some limitations: (1) Limited by undercutting, the number of teeth should not be less than Zmin, making the transmission structure not compact enough; (2) Not suitable for occasions where the installation center distance a’is not equal to the standard center distance a. When a'<a, it cannot be installed, when a’>a, […]
what is bevel gear?
The bevel gear is used to transmit the movement and power between the two intersecting shafts. In general machinery, the angle of intersection between the two shafts of the bevel gear is equal to 90° (but it may not be equal to 90°). Similar to cylindrical gears, bevel gears have indexing cones, addendum cones, tooth […]
what is Spur gear?
Spur gear is a classification of gears. According to the relative position and tooth direction of a pair of gear axes (whether the two circles are parallel), it can be divided into plane gear rotation and space gear rotation; according to the working conditions of the gears, it can be divided into open transmission and […]
Check valve model designation method
Check valve model representation method Check model preparation instructions Check valve (one-way valve) model compilation instructions: Check valve (one-way valve) is also called check valve or reverse flow valve. It is an automatic valve that opens or closes the disc through the flow of the medium itself, and can only flow in one direction and […]
Valve model establishment and meaning (2)
In the previous article, we have introduced the establishment of code number of the valve model in China. However, there are more and more types of valves and materials, and the compilation of valve models is becoming more and more complicated. Although China has a unified standard for valve model formulation, it is gradually unable […]
Description of lining material for rubber lining valve
Overview of rubber-lined valves: Rubber-lined valve (lined valve) is a valve suitable for pipelines containing corrosive media and high sealing requirements. Generally, the applicable temperature should not be too high, and it is not suitable for use in media containing particles to avoid scratches. Scratches or scratches the sealing surface, causing the valve to leak. […]