In any mechanism for driving the rollers is involved, be sure there is a connecting piece is called the gear coupling.
If there are two shafts to be connected on the same axis or at an angle to each other, it is best to be able to transfer the load and effort semi-rigid connection with a gear coupling.Single toothed sleeve is placed, provided between the shafts is only permitted angular displacement.If there is still a need to compensate for axial and radial or bias, the two single pose clutch.Gear coupling has a high reliability and a good load capacity, as equipped with a large number of teeth.Such coupling mechanisms work well with great speed (cranes, conveyor equipment).
Clutches successfully compensate radial, angular and axial misalignment due to the presence of gaps in the mesh side and bushes on the teeth of the sphere.All items that comprise coupling, made of steel: the shaft diameter up to 140 mm - forged and large diameters - cast.To improve the wear resistance of teeth, their heat treatment is carried out, and introduced into the sleeve viscous oil.
In principle, functional gear coupling has a lot to do with the driveline, but compensates for angular displacements smaller, but has a high torque per unit volume.
Features gear couplings
gear coupling consists of two coupling halves, bolted, and two sleeves inserted into the cage drum.Between them they are engaged the teeth of a spherical shape.These couplings are standardized in accordance with GOST 5006-55 for shaft diameters from 40 to 560 mm.There are also other standards for gear couplings that are used for unification of all the CIS countries, depending on the torque, for example, GOST 50895-96 (Russia), State Standard 2742-94 (Ukraine).
Wide range of applications and various requirements that apply to the couplings, led to what is today the coupling design features are divided into several classification groups.
Thus, according to the principle of the clutches are divided into permanent, coupling and self-managed and the nature of work - on hard and resilient.
In execution are coupling with detachable clip (gear coupling GOST 5006-55-MOH), with one-piece wing and with the intermediate shaft (GOST 5006-55 - MW).
For the short ends of the shaft sleeve to make the clutch according to GOST 12080 with cylindrical holes, and in accordance with GOST 12081 - conical.
gear couplings can also be manufactured according to the specifications of the customer.If the customer needs exclusive gear coupling, the drawing must accurately reflect all the necessary parameters.
When installing the couplings must comply with certain characteristics, in particular, the installation of the shaft should be carried out at low heat.
Recently, actively begin to use gear couplings of the polymeric compounds (Capron, caprolon).Increased flexibility and the ability to more evenly distribute the load on the teeth, putting them on a par with the metal.Moreover, the coupling of polymers to have higher elektroizlyatsionnye properties and benefit costs.
