Henan GⅠCLZ type drum gear coupling

The GⅠCLZ drum gear coupling is a rigid-flexible coupling. The gear coupling is composed of an inner gear ring with the same number of teeth and a 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 center of the spherical surface is on the gear axis. The tooth side clearance is larger than that of ordinary gears. The drum-shaped gear coupling can Allows a larger angular displacement (compared to the straight tooth coupling), which can improve the contact conditions of the teeth, increase the torque transmission capacity, and prolong the service life.The contact state along the tooth width when there is angular displacement.

GⅠCLZ drum gear coupling has the ability to compensate for axis deviations such as radial, axial and angular axis. It has the advantages of compact structure, small gyration radius, large carrying capacity, low noise and long maintenance period, and is especially suitable for low-speed heavy-duty Load working conditions, such as metallurgy, mining, lifting and transportation industries, and also suitable for shafting transmission of various machinery such as petroleum, chemical industry, general machinery and so on.

The load capacity and allowable offset or swing angle of GⅠCLZ drum gear coupling are directly related to the radius of curvature (curvature) of the tooth.From the perspective of increasing the load-bearing capacity, the larger the radius of curvature, the better; and in terms of increasing the allowable swing angle, the smaller the radius of curvature, the better.The arc of the drum-shaped tooth surface is naturally formed when the hob moves along the arc during machining, so the radius of the infeed arc determines the radius of curvature of the tooth.

In order to find the relationship between the radius of curvature of the drum tooth surface and the radius of the indexing arc, it is necessary to find the normal and tangent radius of curvature of the drum tooth surface on the indexing circle.

In the design of GⅠCLZ drum gear coupling and shaft coupling, the correct tooth side clearance is first given when calculating the geometric dimensions.Because even though the arc-shaped teeth are used, the radius of curvature of the arc cannot be too small due to the load strength. If there is not a sufficient amount of tooth side clearance, the phenomenon of gnawing will occur when there is an angular deviation.What this article recommends is the method of selecting and reasonably distributing the side clearance of the outer gear sleeve and the inner gear ring.

The GⅠCLZ drum gear coupling is unique in the mechanical transmission of intermittent, reversible, heavy load and high speed, especially in the transmission with large adjustment errors and deflection angles between the two coupling shafts. Because of its superiority, it is widely used in various metallurgical and mining machinery.The optimized design method described in this article has been incorporated into our company's standards and has been widely used in the design and manufacture of various complete sets of equipment, with satisfactory results.

GⅠCLZ drum gear couplings are usually lubricated with lubricating oil. The tooth surface requires continuous lubrication and the lubricating oil drain should be smooth, otherwise the temperature of the tooth surface will increase and moisture and dirt will accumulate.The lubricating oil needs to be filtered by an oil filter, and the degree of filtration is less than XNUMXμm.Some important high-speed drum-shaped gear couplings can also adopt the structure of the oil-collecting groove hole. The Liaocheng drum-shaped gear coupling means that the oil-collecting groove is machined in the shaft hole of the external gear, and the groove is drilled and collected at the bottom of the external gear tooth groove. The oil hole communicating with the oil tank, useDrum gear couplingThe centrifugal force generated by high-speed operation sprays oil into the meshing part of the inner and outer teeth to make it fully lubricated.

Torque GⅠCLZ drum-shaped gear coupling has good impact bearing performance, but the tooth surface contact stress and tooth root bending fatigue strength require high requirements. If we adopt structure, material and technology, then this coupling can meet the requirements of large diameter rolling The requirements of the tube machine.

Common faults in the work of GⅠCLZ drum gear coupling:

①The internal and external tooth surfaces of the coupling are severely worn.

②The axial displacement of the inner gear ring of the coupling is large, and it can't even mesh.

③The internal and external teeth of the coupling are broken.

④The coupling bolts are broken.

The main reasons for the above failures are as follows:

, Insufficient or lack of oil in the coupling of lifting accessories.Or improper use of grease causes calcification of the grease, resulting in the inability to lubricate between the tooth surfaces, or poor lubrication, resulting in serious tooth surface wear. In this case, just change the grease and inject qualified grease regularly to prevent oil leakage. The amount of oil is sufficient. Can be avoided.

, The horizontality and coaxiality errors of the two shafts are too large, exceeding the range that the coupling can compensate, making the shaft teeth and the internal teeth meshing incorrectly, causing local contact and additional torque.And this additional moment can be decomposed into axial force.Acting on the inner gear ring, the magnitude of this force depends on the size of the deviation, and is proportional to the deviation. The greater the deviation, the greater the force, which will cause the axial displacement of the inner gear ring of the lifting accessories coupling.If the displacement is too large, it will be uncontrollable, resulting in serious gear wear and even broken teeth. The internal and external teeth cannot be meshed until they cannot be transmitted.

technical parameter: