What are the specific selection and leveling standards of the coupling?

　　1. Select the standard coupling.When choosing a coupling, the designer should first choose among the couplings that have been established as standards, mechanical industry standards, and patented couplings.Only when the existing standard couplings and patented couplings cannot meet the design needs, can we design our own couplings. 2. Select the type and type of coupling.In order to understand the comprehensive effect of coupling in the transmission system, considering the overall design of the transmission system, the type and type of coupling are selected.Various couplings can be selected according to categories such as prime mover and working load, working speed, transmission accuracy, biaxial offset, temperature, humidity, and working environment.When the coupling is used with the brake, the coupling with the brake wheel or disc coupling should be selected. When overload protection is required, the safety coupling should be selected. When the coupling is used in combination with the brake, The safety coupling should be selected. When the coupling is used in combination with the brake, the safety coupling should be selected.When connecting with a flange, the flange type should be selected. When the connection axial size is large, the intermediate shaft type or the intermediate sleeve type should be selected for long-distance transmission. 3. Calculation of coupling torque.The power of the power machine in the transmission system should be greater than the power required by the machine.According to the power and speed of the engine, the theoretical short torque T of the high-speed end connected with the engine can be obtained, and the torque Tc of the coupling can be calculated according to the working condition coefficient K and other correlation coefficients.The coupling T is inversely proportional to N, so T is greater than T.4 at low speeds.The main choice for the elastic coupling model.According to the calculated torque Tc, when a similar nominal torque Tn is selected from the standard series, TN or TC should be satisfied.The allowable speed [N] and radial dimension D and axial dimension L_0 of the coupling can be obtained from meeting the criterion of coupling speed N [N].Adjust the model according to the shaft diameter.The connection size of the coupling, that is, the diameter of the shaft hole D and the length of the shaft hole L should meet the requirements of the diameter of the main shaft and the driven shaft.Otherwise, the coupling specifications should be adjusted according to the spindle diameter D.The shaft diameter of the main shaft drive end is a common phenomenon. When the torque and speed are the same, and the main drive end shaft diameter is different, the coupling type should be selected according to the large shaft diameter.In the newly designed transmission system, seven types of shaft holes conforming to GB/T3852 should be selected, and the J1 shaft hole type is recommended to improve versatility and interchangeability.The length of the shaft hole should meet the product standard of the coupling. 6. Select the connection type.The choice of the coupling type of the coupling depends on the coupling type of the main shaft and the driven end.The key connection is generally used.In order to unify the types and codes of joint connections, seven types of keyways and four types of keyless connections are defined in GB/T3852.The one used is a single bond. 7. Selection of coupling varieties, varieties and specifications.According to the comprehensive factors such as the load type, speed and working environment of the power engine and the coupling, the type of coupling is selected, and the coupling type is selected according to the matching and connection conditions of the coupling.According to the nominal torque, select the diameter of the shaft hole and the length of the shaft hole.In order to ensure the strength of the shaft and the key, after selecting the coupling model, the strength of the shaft and the key should be checked to determine the type of coupling.

　　(1) Use lifting accessories to fix the outer support foot of the elastic coupling motor, and move the inner support foot until the eccentric line between the motor and the pump center is zero.In order to ensure that the motor does not move randomly, one side of the motor support leg is fixed, and the other side is supported by the top wire.

　　(2) Fix the inner leg of the coupling and move the outer leg to make the center line eccentric to zero.

　　(3) After multiple repetitions of the above two methods, the coupling can achieve a better alignment state.

　　Flexible tooth couplings are used to connect heavy and vibrating machines to mechanical shaft drives.Coupling A half-acting coupling with an internal gear, forming a closed loop with the gear.The large width of the radial groove is slightly smaller than the thickness of the elastic element bundle to ensure that the elastic element has a preload after being inserted into the radial groove.As the distance between the gears decreases, the rigidity of the coupling will increase.When the sheet bundle is relatively sheared, the elastic element will work in a bent state, which will make it possible to obtain some nonlinear characteristics of the coupling to ensure the large elastic damping performance of the coupling.When the driving coupling rotates, the gear interacts with the gear, and the gear transmits torque to the driven coupling half through the shaft.At this time, the two half couplings will work with some relative rotation.When the coupling stops working, the gear will return to its original position under the action of the elastic element.This kind of coupling can work in the reverse direction, is reliable, has strong bearing and elastic damping capacity, and has a wide range of use values.

　　The above is part of the elastic gear coupling.If you need more information about couplings, please follow the official website!