The actual amount of bolts measured diagonally is very close to the two sets of data.

At the scene, the natives performed the actual operation on the tensioner. In the actual operation, the on-site natives used two dial gauges to measure the bolt tensile amount diagonally. Through the comparison of experimental data, it was found that the actual tensile amount of the bolts measured diagonally was very close, and the data met the cylinder head of the diesel engine. The maintenance process requires that the inspection process requires the actual amount of cylinder head bolts to stretch. During the test, the backlash resistance of the cylinder is small, the operation is labor-saving, the pressure of the high-pressure pumping station is stable, and the adjustability is good. Promotion of application and social benefits promotion and application The hydraulic tensioner developed by the scientific research institute of Urumqi Railway Bureau has been used in Urumqi, Hami, Korla and Xuzhou North Locomotive Depots.

Through the comparison of the test data, it can be found that the actual tensile amount of the diagonal side bolts is very close, which can meet the process requirements of uniform bolt stretching in the maintenance work. During the test, the backlash resistance of the cylinder is small, the operation is labor-saving, the pressure of the high-pressure pumping station is stable, and the adjustability is good. Field test I concluded that the design was better than the current domestic and foreign equipment used in the whole road speed-up machine segment in terms of safety, structural design, performance, work efficiency, price ratio, etc., and solved the previous domestic and foreign equipment. The various problems in the application solved the technical problems of the production line, achieved the expected goals of the research, and realized the technological innovation. At present, we have begun to realize electromechanical integration on various types of stretchers, using high-precision displacement sensors to replace traditional dial gauges, using computer technology to display the amount of stretch at any time on the electronic display screen, so that workers can follow the maintenance process at any time. Correct the amount of stretch, and finally transfer the stretch data to the central database for reference. The quality inspectors and managers can dynamically grasp the quality of the locomotive maintenance at any time through the network and assess the operator's work.