Classification and purchase of couplings

Published: 2020-10-21

As the application of couplings becomes more and more widespread, everyone is paying more and more attention to coupling manufacturers.The main application of the coupling is the transmission of various torque deviations and degrees, so as to achieve a good adjustment effect, so as to meet the production and processing needs of different industries, give play to greater advantages in use, and show more stable functional properties .So how much do you know about couplings?There are many types of couplings.

We first divide the coupling into two major categories. From the two major categories, we are subdivided into various subcategories.Category: Rigid coupling (without compensation function) The second category: Flexible coupling (with compensation function)-this is divided into couplings with or without elastic components.

Let’s first talk about the definition of a rigid coupling: the word expresses its meaning, a coupling that can twist the rigidity without any turning back into the gap when subjected to heavy loads, even if a deviating load is generated. At this time, the rigid coupling still continues to carry out the rigid transmission law.

Next, let’s talk about the second category of flexible couplings that do not have elasticity: because it is flexible, it can compensate for the relative displacement of the two elements, but because there is no elastic element, it cannot achieve the cushioning effect. , So it can not be used for shock absorption and cushioning purposes.Including: flange couplings, cross slide couplings, universal couplings, slider couplings, gear couplings, etc.Let's look at a flexible coupling with elastic elements: literally, it is a coupling equipped with elastic element devices. This kind of coupling can not only compensate for the relative displacement between objects, but also has cushioning and shock absorption. Effect.The greater the energy stored by the elastic element of the coupling, the stronger the shock absorption capacity of the coupling.The greater the delay of the elastic element and the greater the friction work generated by the elastic element when it is working, the better the shock absorption and buffering force that occurs on the coupling.Among them are: roller chain coupling, elastic sleeve pin coupling, elastic pin coupling, star-shaped elastic coupling, plum-shaped elastic coupling, tire coupling, diaphragm coupling and so on.Because this type of coupling is widely used, the products produced by manufacturers are becoming more and more diverse.

Combining the above two categories, you can compare them according to your needs when choosing a coupling, and choose the one that is most suitable for you to make the best use of it and play a greater value.

CouplingIn daily use, keyway damage such as "key biting" often occurs due to various reasons. Generally, after the coupling keyway is damaged, it needs to be disassembled, cored, surfacing, and then re-milled. This is a lot of work and very troublesome. The repair cycle is also relatively long.The inspection of the coupling is a key part to ensure the installation, use and life of the coupling. Reasonable inspection in accordance with the inspection procedures will help improve work efficiency and avoid missed inspections and false inspections during the production process.

The inspection items of the coupling mainly include the inspection of whether the materials used are qualified; when inspecting the parts, first check the specifications and grades of the materials used in the drawings and process documents, and check the grain direction and status of the plates.Check the size of the coupling after it is qualified; check the shape, surface roughness, and surface quality of the coupling; check whether the geometry of the coupling is qualified compared to the front view and other views; check whether the position of each element is correct, such as holes and grooves , Etc.; check the surface roughness and surface quality, such as scratches, bumps, deformation, cracks, etc.; check the dimensional accuracy of the coupling, and when checking the dimensional accuracy of the coupling, it must be carried out in accordance with the drawings, processes, and technical conditions.

Diaphragm couplingIt can actively compensate the axial, radial and angular offset caused by the motor, as well as the influence caused by factors such as manufacturing error, installation error, bearing deformation and temperature rise.Diaphragm coupling is a metal elastic element in flexible couplings. The advantages of driven torque transmission, elastic vibration, no noise, and no lubrication are the ideal products to replace gear couplings and general couplings. 

The diaphragm coupling bolt connection does not need to be threaded on the connecting piece, the use is not restricted by the connecting piece, the structure is simple, and the disassembly and assembly are convenient.Stud bolts can be used in occasions where bolts cannot be used due to structural restrictions, but a compact connection structure is required.The bolt connection does not have a nut and has a smooth exposed surface, but it is not suitable for frequent disassembly and connection to avoid damage to the threaded hole.