Shaanxi NGCL type drum gear coupling with brake wheel

When the NGCL type drum gear coupling with brake wheel is working, the two shafts produce relative angular displacement. The tooth surfaces of the inner and outer teeth periodically slide relative to each other in the axial direction, which will inevitably cause tooth surface wear and power consumption. The coupling must work in a good and 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.

Drum tooth is the outer tooth made into a spherical surface, the center of the spherical surface is on the gear axis, and the tooth side clearance is larger than that of ordinary gears.Drum gear couplingCompared with the straight tooth coupling, it can allow larger angular displacement, can improve the contact conditions of the teeth, increase the torque transmission ability, and prolong the service life. It has the ability to compensate radial, axial and angular axis deviations, and has a structure It has the advantages of compactness, small turning radius, large carrying capacity, good transmission effect, low noise and long maintenance period.

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

1. Strong bearing capacity.Under the same outer diameter of the inner gear sleeve and the large outer diameter of the coupling, the carrying capacity of the NGCL drum gear coupling with brake wheel is on average 15-20% higher than that of the straight gear coupling.

2. Large angular displacement compensation.When the radial displacement is equal to zero, the allowable angular displacement of the spur gear coupling is 1°, and the allowable angular displacement of the drum gear coupling is 1°30', an increase of 50%.Under the same modulus, number of teeth, and tooth width, the allowable angular displacement of the drum tooth is larger than that of the straight tooth.

3. The drum-shaped tooth surface improves the contact conditions of the inner and outer teeth, avoids the disadvantages of squeezing the edge of the straight tooth and stress concentration under the condition of angular displacement, and at the same time improves the friction and wear of the tooth surface, and reduces Noise, long maintenance period.

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. In order to enhance the lubrication and sealing effect and reduce the number of parts, it is especially recommended to select the integral structure type of the sealing end cover and the inner gear ring as a whole.

6. The tooth spacing is small, the allowable relative radial displacement is small, the structure is compact, and the moment of inertia is small. It is suitable for the occasions matching with brake shoe

7. It is allowed to rotate in the forward and reverse directions, and the external gear sleeve on either side can be used as the active input end, and the nominal torque can be transmitted from 400 to 100000 N·m.

The basic parameters and main dimensions of NGCL type drum gear coupling with brake wheel (JB/ZQ4644-1997) (unit: mm)