Routine Test Centrifuge Static-Dynamic Balance Monitoring Device

Abstract

The invention discloses a static-dynamic balance monitoring device for a routine test centrifuge. The routine test centrifuge includes a rotating arm, a rotating arm support and a machine base. The counterweight and the jib include two tension shafts parallel to each other. The two tension shafts are fixedly connected by a plurality of positioning rings. The working end and the counterweight end of the bottom surface of the swing arm support are respectively provided with a set of supports. A rocker-type sensor is installed in a support; a group of sensor seats are respectively installed at the position of the working end and the position of the counterweight near the center of the pivot arm support on the tension shaft, and a pressure sensor is installed in each sensor seat. The force-bearing end is in corresponding contact with the pivot arm support. The invention utilizes a rocker sensor and a pressure sensor to respectively realize real-time monitoring of the static weight and dynamic balance of the rotating arm of the routine test centrifuge, thereby improving the operation safety of the routine test centrifuge.

Description

technical field [0001] The invention relates to a balance monitoring device for a routine test centrifuge, in particular to a static-dynamic balance monitoring device for a routine test centrifuge. Background technique [0002] Large-scale routine test centrifuges are widely used in national defense science and technology research and aerospace technology to carry out overload assessment or load simulation tests. This type of centrifuge has a left and right unequal long arm structure. The end of the long arm is the working end, where the test chamber or vibration table is installed. The moment of the rotating arm is balanced with respect to the central axis of rotation, that is, the center of mass of the rotating arm passes through the axis of rotation under load conditions. However, in different tests, the quality and shape of the test piece and its fixtures are different. At the same time, due to the error of static balance adjustment, it is difficult to ensure that the c...

AI Technical Summary

Problems solved by technology

[0005] The method of judging the static balance by installing a steel ruler on the arm is too rough to accurately judge the balance state of the arm; the dynamic monitoring method used on the geotechnical centrifuge can only reflect the dynamic unbalanced force condition. It is impossible to determine the state of static balance. We can only use theory to test balance first, and then after the centrifuge rotates to a certain speed, use dynamic monitoring data to determine whether the trim is within the allowable range. If it is not within the allowable range, it is necessary to stop and perform static trim again. The workload of the test is increased; the unbalance is judged by the method of theoretical estimation without installing a balance detection device. On the one hand, due to the complex and changeable actual structure, the calculation is inconvenient; on the other hand, the estimation is not accurate

Images