4results about How to "Add test function" patented technology

The present application discloses a kind of heavy die test press machines, including body frame, main oil cylinder, body frame is made of lower crossbeam, column and upper crossbeam.Key features include slider, lifting cylinder, motor, friction stopper and moving platform.Slider includes rotary slider, pressurized slider and side slider, wherein pressurized slider is installed in frame by guide rail, connected with main oil cylinder.Side slider moves up and down through guide assembly and guide rail, and double-side lifting cylinder drives its action.Rotary slider connects two side sliders through rotary shaft, and motor is installed on side slider, rotary motion is realized through driving gear and rotary gear.Moving platform is installed on lower crossbeam, used for installing lower die.Through innovative double-side synchronous drive and gear set driving, the test press machine improves system stability, rotary load capacity and test function, and provides significant technical advantage for large, heavy die test requirements.

The application discloses a switching device of a phased array antenna testing system and a testing method, relates to the field of phased array antenna testing of satellite communication, and discloses the switching device, which comprises a communication interface, a signal processing assembly and a darkroom testing system. The communication interface is configured with a communication protocol, the darkroom testing system and the phased array antenna follow the communication protocol, and the communication connection between the darkroom testing system and the phased array antenna system is realized through the communication interface. The signal processing assembly stores a testing file for testing the phased array antenna, controls the operation state of the darkroom testing system and switches the working state of the phased array antenna according to the testing file. Meanwhile, the probe of the darkroom testing system is controlled to collect the radio frequency signals of the phased array antenna under different working states according to the switched working state of the phased array antenna, the radio frequency signals are analyzed, and testing data are obtained. The application does not need to stop the work of the two-part system, reduces the testing waiting time, and further improves the testing efficiency.

The application discloses a rock variable-angle tensile shear, compressive shear and variable-angle triaxial test device capable of adding confining pressure, which comprises a counterforce frame, a hydraulic loading system, a variable-angle shear test module and a variable-angle triaxial test module arranged on the counterforce frame, and can be used for rock sample variable-angle compressive shear test under a condition without lateral confining pressure, rock sample variable-angle tensile shear test under a condition without lateral confining pressure, rock sample variable-angle shear test under a condition with lateral confining pressure, cubic rock sample variable-angle triaxial test, and small-scale rock mass "first loading and then excavation" stress path simulation test under a true triaxial stress condition. The loading structure of the testing machine is simplified, the number of loading oil cylinders is reduced, the simplicity of multiple tests is enhanced, multiple functions can be effectively integrated, and one machine can be used for multiple purposes.

The utility model discloses a device for testing the friction force between a piston rod and a guider of a shock absorber, which comprises a shock absorber cylinder barrel, a piston assembly, a guider, a floating piston, a fixed barrel, a connecting nut and a data acquisition system, and is characterized in that the shock absorber cylinder barrel is used for storing a liquid medium and simulating the internal environment of the shock absorber; the piston assembly comprises a piston rod and can reciprocate along the shock absorber cylinder barrel, the guiders are fixed to the two ends of the shock absorber cylinder barrel to guide and seal the piston rod, the floating piston adjusts the pressure in the shock absorber cylinder barrel through the inflation system, the fixed barrel is matched with the movement range of the piston rod, and the connecting nut is used for being connected with external testing equipment. The data acquisition system monitors displacement, speed and damping force parameters in real time, interference of other parts in the shock absorber is isolated through modular design, and independent testing of a piston rod and a guider friction pair is achieved. The shock absorber cylinder simulates the real working condition, the pressure environment can be dynamically adjusted through combination of the floating piston and the inflation system, and the problem that an existing pressure condition is single is solved.