Classification of pin couplings: Pin couplings are divided into LT-type pin couplings and HL-type pin couplings.They are all flexible couplings.The elastic coupling is composed of two halves, which are respectively connected with the driving shaft and the driven shaft.The general power machine is mostly connected with the working machine by means of a coupling, which is a commonly used connection part for the shaft transmission of mechanical products.There is no relative sliding, no lubrication, sealing, no noise, basically no maintenance, easy to manufacture, and can partially replace WGT drum gear coupling. LT type (original TL type) pin coupling (GB4323-2002 instead of GB4323-1984) pin coupling uses a pin with an elastic sleeve (rubber material) at one end and is installed on the flanges of the two coupling halves In the hole to realize the coupling of the two halves of the coupling.

　　The pin coupling has a large structure, simple and reasonable, convenient maintenance, symmetrical and interchangeable on both sides, long life, allowing large axial movement, and has the properties of buffering, shock absorption, and wear resistance.

　　轴孔型式有圆柱形(Y)、圆锥形(Z)和短圆柱形(J)。轴孔和键槽按标准GB3852-83《联轴器轴柱和键槽形式及尺寸》的规定加工。半联轴器采用精密铸造,铸铁HT20-40、铸钢ZG35Ⅱ,轴孔和键槽采用拉制成型,柱销采用MC尼龙b制成。

　　The pin coupling is a pin made of several non-metal elastic materials, placed in the flange hole of the two halves of the coupling, and the two halves of the coupling are connected by the pin. The coupling has a simple structure and is easy to manufacture , It is more convenient to assemble, disassemble and replace the elastic element, without moving the two halves of the coupling.The material of the elastic element (column pin) is generally selected from nylon, which has the ability to slightly compensate for the offset of the two axes. The elastic part is sheared during work and has poor working reliability. It is only suitable for medium-speed transmission shafts with very low requirements, and is not suitable for work. Working conditions with high reliability requirements.