Measurement of end face clearance of plum-shaped elastic body coupling and selection of datum

　　Plum blossom-shaped elastic couplings are widely used in various coal mines. The gap adjustment at the assembled end directly affects the effect of the motor transmission torque. The appropriate end and the gap can effectively prevent the elastic cushion from losing the cushioning effect and causing the electric scan L or reducer. Overheating related standards stipulate that the end of the coupling assembly has a gap of 2-4mm.
　　Since the supply of each repaired part is made by the same manufacturer, the size of the coupling is slightly different. If the gap between the end of the coupling assembly is measured accurately and the assembly position is determined before assembly, it will likely lead to the return, and the size of the coupling During torque transmission, the coupling and the shaft have an interference fit, and it is difficult to return to it. Here, taking the plum-shaped elastomer coupling used in the SZZ800/250 double-chain scraper transfer machine as an example, the plum-shaped elastomer coupling is briefly explained. The end and gap adjustment force method.
　　1. Measurement and benchmark selection of end face clearance of plum-shaped elastic body coupling
　　In the assembly process of plum-shaped elastomer couplings, suitable measurement standards should be selected to avoid amplifying measurement errors. The measurement standards of the motor half couplings are generally the combination of the motor and the coupling plate. The measurement standards of the reducer half couplings are generally Select the combination of the connecting cover and the connecting plate and adjust the gap at the end of the plum-shaped elastomer coupling. The axial gap of the half coupling is 8=b-(am)
　　among them:
　　a is the distance between the motor and the coupling plate and the bottom of the motor half coupling
　　h is the distance between the connecting cover and the coupling plate and the top of the reducer half coupling (clutch) m is the thickness of the coupling plate
　　At the same time, when assembling the motor half coupling, consider the distance t value between the step of the motor output shaft end and the bottom of the motor half coupling, because the t value is a direct factor that affects the assembly position of the half coupling, and the downward adjustment force In the method of small discussion, whether to increase the distance pad or add the inner end surface of the half coupling, the daily t value is adjusted.
　　2. The adjustment method of the end face gap of the plum-shaped elastomer coupling assembly
　　2.1 Direct assembly method
　　The premise of this force method is that the parts are unified. The manufacturer adds the coupling according to the appropriate end and the gap. Under this premise, the assembly only needs to be measured and checked, and other measures need to be taken to adjust. Install it in place.
　　2.2 The distance pad method
　　After measuring the end of the quincunx-shaped elastomer coupling in place and the gap is too large, a distance pad can be added to the motor output shaft or reducer input shaft_push the coupling outward_to reach the proper end and the gap is careful The distance between the two ends of the pad should be flat, and a transitional fit should be adopted with the assembly shaft.
　　2.3 plus half coupling method
　　After measuring the end of the quincunx-shaped elastic body coupling assembled in place and the gap is too small, add the inner end of the motor or reducer half coupling, and move the coupling inward to adjust to the appropriate end. Clearance (if the half coupling assembled with the reducer is a coupling, then only the electric scanning lower half coupling can be added) The inner side of the half coupling is in a positional relationship between the top and the bottom.
　　2.4 Change the connecting plate method
　　When conditions permit, the axial travel can be adjusted by changing the coupling plate of the motor and the reducer, but usually there are not many suitable coupling plates to change_so this method is not suitable for small constant clearance.