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　　Check and calculate according to the nominal torque, shaft hole diameter and shaft hole length to finally determine the model of the drum gear coupling.For example, gear couplings are widely used in shaft transmissions of metallurgical machinery and heavy machinery. ...

　　Compared with ordinary carbon structural steel, high-quality carbon structural steel has a lower content of sulfur, phosphorus and other non-metallic inclusions.According to the different carbon content and use...

　　 Plum blossom couplings are widely used in CNC machine tools, CNC lathes, machining centers, engraving machines, CNC milling machines, metallurgical machinery, mining machinery, petroleum machinery, chemical machinery, lifting machinery, transportation machinery, light industry machinery, textile machinery, water pumps, Fans and so on. ...

　　 Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and it has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding, aluminum alloy and chemical industry. ...

　　In order to ensure the smooth progress of the meeting to commemorate the 70th anniversary of the victory of the Chinese People's War of Resistance Against Japanese Aggression and the World Anti-Fascist War, the organization of the commemorative meeting was run in on-site, and special exercises were conducted in the Tiananmen area and along Chang'an Avenue. ...

　　Commonly used star elastic couplings are divided into basic star couplings, expanded shaft hole star couplings, double elastic star couplings, flanged star elastic couplings, and belt systems. Moving wheel type star-shaped elastic coupling, with brake disc type star-shaped elastic coupling. ...

　　There is no elastic body in the middle of the JQ type clamp shell coupling. It is usually a lifting ring. The shaft at both ends is suspended. The diameter of the shaft hole is the diameter. It is generally used for vertical installation. The middle part is slotted with a suspension ring to block the equipment at both ends. Shaft head to transmit torque. ...

　　The backstop is a device that prevents reversal and supports the heavy objects from moving.Its main functions are: ①Supporting heavy objects for a long time (supporting function); ②Only allowing the mechanism to move in one direction, acting as a stopper; ③Allowing the mechanism to move freely in one direction and limiting the speed in the reverse direction...

　　Rigid coupling, as the name implies, is actually a torsionally rigid coupling. Even when it is under load, there is no backlash. Even when the load is caused by deviation, the rigid coupling still transmits torque rigidly. ...

　　Due to various reasons, the center of mass or inertial principal axis of the tire coupling does not coincide with the axis of rotation, and the phenomenon of unbalanced centrifugal inertia, centrifugal inertia couple and dynamic torsion (vibration shape) will occur during operation, which is called the phenomenon of rotor Imbalance phenomenon, this imbalance...