HangzhouNylon sleeve inner gear ring

The main purpose of the nylon sleeve inner gear ring is: forging, construction, mining, plastics, food, engineering, petroleum, chemical, machine tool, ship, leather, textile, fan, pump and other industries machinery transmission.The internal tooth elastic coupling uses better couplings with other structures.

The internal tooth-shaped elastic coupling is currently a domestic product and has been widely used. It is suitable for flexible transmission between shafts, allows large axial radial displacement and angular displacement, and has a simple structure and convenient maintenance. , Easy disassembly and assembly, low noise, low transmission efficiency loss, long service life, etc., are very popular with users.The shaft hole types are cylindrical (Y), conical (Z) and short cylindrical (J).The shaft hole and keyway are processed in accordance with the standard GB3852-83 "Coupling shaft hole and keyway form and size".The working temperature is -20～+70℃.

The inner gear ring of the drum gear coupling nylon sleeve belongs to the rigid-flexible coupling. The gear coupling is composed of the inner gear ring with the same number of teeth and the flange half coupling with external teeth.The external teeth are divided into straight teeth and drum teeth. The so-called drum teeth means that the external teeth are made into a spherical surface. The spherical surface is on the gear axis. The tooth side clearance is larger than that of a general gear. Larger angular displacement (compared to spur gear couplings), the contact conditions of the teeth can be improved, the torque transmission capacity is improved, and the service life is prolonged.The contact state along the tooth width when there is an angular displacement.It has the ability to compensate for axis deviation in radial, axial and angular directions, and has the advantages of compact structure, small gyration radius, large carrying capacity, low transmission, low noise and long maintenance period. It is especially suitable for low-speed and heavy-duty conditions, such as metallurgy, It is also suitable for shafting transmission of various machinery such as petroleum, chemical industry, general machinery, etc. in mining, lifting and transportation industries.

The characteristics of the drum gear coupling (compared with the straight gear coupling, it has the following characteristics):

1. Carrying.Under the same outer diameter of the inner gear sleeve and the outer diameter of the coupling, the load-bearing capacity of the drum gear coupling is 15-20% higher than that of the straight gear coupling on average.

2. Large angular displacement compensation.When the radial displacement is equal to zero, the allowable angular displacement of the spur gear coupling is 1o, and the allowable angular displacement of the drum gear coupling is 1o30', an increase of 50%.Under the same modulus, number of teeth, and tooth width, the allowable angular displacement of the drum gear is larger than that of the straight tooth.

3. The drum-shaped tooth surface makes the contact conditions of the inner and outer teeth avoid the disadvantages of squeezing the edge of the straight tooth and stress concentration under the condition of angular displacement. At the same time, it reduces the friction and wear of the tooth surface, reduces the noise and maintenance The cycle is long.

4. The tooth end of the outer gear sleeve is in the shape of a horn, which makes the assembly and disassembly of the inner and outer gears convenient.

5. The transmission reaches 99.7%.

Based on the characteristics of warp, at present, drum-shaped teeth have generally been substituted for straight-tooth couplings.

When the gear coupling is working, the two shafts produce relative angular displacement, and the tooth surfaces of the internal and external teeth periodically slide relative to each other in the axial direction, which will inevitably cause tooth surface wear and power consumption. Therefore, the gear coupling must have a good and Work in a sealed state.Gear couplings have small radial dimensions and large load-bearing capacity. They are often used in shaft transmissions under low-speed and heavy-duty conditions. The dynamically balanced gear couplings can be used for high-speed transmissions, such as gas turbine shaft transmissions.Since the angular compensation of drum gear couplings is greater than that of spur gear couplings, drum gear couplings are widely used. Straight gear couplings are obsolete products and should not be used as much as possible.