A movable external loading and specific pressure testing technology for hydraulic support
In order to solve the technical problems of testing items such as hydraulic support yield performance and base specific pressure,as well as the inability of existing hydraulic support testing devices to perform external loading,we designed a movable hydraulic support external loading and specific pressure testing device.The device uses 12 gas-liquid combined functional loading cylinders as external loading power sources and specific pressure testing data acquisition components,which can be used for external loading and base specific pressure testing,respectively.During external loading testing,the multi cylinder synchronous loading based on high-precision rigid hydraulic synchronous cylinder adjustment technology was used to achieve the external loading function of the testing device;during the specific pressure test,the specific pressure distribution value was obtained according to the relationship between the"Gas Spring"settlement displacement and pressure data of different sections when the test device is loaded with external load.By conducting shrinkage performance and specific pressure tests on different specifications of hydraulic supports on different test rigs,it was found that the external loading test process was smooth and the specific pressure test data collection was fast and accurate.The test results show that the device has the function of shared use among different hydraulic support testing devices,which can solve the technical problems of external loading and specific pressure testing of hydraulic supports.
NETL
NSTL
万方数据
