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A gear coupling is a mechanical device for transmitting torque between two shafts that are not collinear. It consists of a flexible joint fixed to each shaft. The two joints are connected by a third shaft, called the spindle.
Each joint consists of a 1:1 gear ratio internal/external gear pair. The tooth flanks and outer diameter of the external gear are crowned to allow for angular displacement between the two gears. Mechanically, the gears are equivalent to rotating splines with modified profiles. They are called gears because of the relatively large size of the teeth.
Gear couplings and universal joints are used in similar applications. Gear couplings have higher torque densities than universal joints designed to fit a given space while universal joints induce lower vibrations. The limit on torque density in universal joints is due to the limited cross sections of the cross and yoke. The gear teeth in a gear coupling have high backlash to allow for angular misalignment. The excess backlash can contribute to vibration.
Gear couplings are generally limited to angular misalignments, i.e., the angle of the spindle relative to the axes of the connected shafts, of 4-5°. Universal joints are capable of higher misalignments.
Advantages of Tanso gear coupling
1.Lowest price based on large scale production.
2.High and stable quality level.
3.Widely used in various mechanical and hydraulic fields.
4.Compensation for axial, radial and angular misalignment.
5.Convenient axial plugging assembly.
6.No brittlement at low temperature.
7.Good slippery and frictional properties.
8.Resistance to chemical corrosion.
9.Rich experience working with big companies in this field.
Type I – sealed end is a separate type, the tooth spacing is large, can allow a large radial displacement, and can be connected with the Y, J1, Z1 type shaft extension.Type II – The sealed end is integral, with small tooth spacing, relatively small radial displacement, compact structure, small moment of inertia, and can be coupled with Y and J1 shaft extensions.
The drum-shaped gear coupling has the advantages of radial, axial and angular equiaxed deviation compensation, and has the advantages of compact structure, small radius of gyration, large carrying capacity, high transmission efficiency, low noise and long maintenance period. Low-speed heavy-duty conditions, such as metallurgy, mining, lifting and transportation, etc., are also applicable to shafting transmission of various types of machinery such as petroleum, chemical, general machinery, and drum-shaped gear couplings are rigid flexible couplings. The toothed coupling is composed of a ring gear with the same number of teeth and a flanged half coupling with external teeth. The external teeth are divided into two types of teeth: straight teeth and drum teeth. The so-called drum teeth are made of spherical teeth, the center of the spherical surface is on the gear axis, the tooth side clearance is larger than the general gear, and the drum gear coupling can be Allowing for larger angular displacements (relative to spur gear couplings) improves tooth contact conditions, increases torque transfer capability, and extends service life. The contact state along the tooth width when there is an angular displacement. When the gear coupling is in operation, the two shafts produce relative angular displacement, and the tooth surfaces of the inner and outer teeth periodically slide axially relative to each other, which inevitably forms tooth surface wear and power consumption. Therefore, the gear coupling needs to have good and Working in a sealed state. The gear coupling has small radial dimension and large bearing capacity. It is often used for shafting transmission under low speed and heavy load conditions. The high precision and dynamic balance gear coupling can be used for high speed transmission, such as the shafting of a gas turbine. transmission. Since the angular compensation of the drum-shaped gear coupling is larger than that of the straight-toothed coupling, the drum-shaped gear coupling is widely used at home and abroad. The straight-toothed coupling is a product that has been eliminated, and the user should try not to use it. .The characteristics of the drum-shaped gear coupling (compared with the straight-toothed coupling): The basic parameters and dimensions of the drum-shaped coupling are in accordance with the corresponding JB/ZQ standard, and the product is manufactured in accordance with JB/ZQ4382-86. "Technical Conditions for Gear Couplings". It is suitable for connecting two horizontal coaxial transmission shaft systems. It has certain adaptability to the angular deviation and radial displacement between the two axes. It allows the shaft to swim freely along the axial direction within a certain range, and can adapt to the shaft system due to temperature changes. Telescopic.