2results about How to "Avoid stress changes" patented technology

The application discloses a machine tool center bracket and a using method, which comprises a ring-shaped frame and a plurality of supporting components arranged on the ring-shaped frame, the supporting components are used for supporting workpieces located on the inner side of the ring-shaped frame, each supporting component comprises a sleeve, a main supporting claw and two auxiliary supporting claws; the sleeve is integrally arranged on the ring-shaped frame, and the sleeve is provided with a first adjusting component; the main supporting claw is movably sleeved in the sleeve, the first adjusting component is used for adjusting the position of the main supporting claw in the sleeve, the inner end of the main supporting claw towards the center of the ring-shaped frame is provided with an expansion piece, the distal end of the expansion piece is movably provided with a first roller, and the inner portion of the main supporting claw is provided with a second adjusting component; the two auxiliary supporting claws are movably and symmetrically arranged on the two sides of the main supporting claw, the second adjusting component is used for synchronously adjusting the included angle between the two auxiliary supporting claws and the main supporting claw, and the distal ends of the two auxiliary supporting claws are respectively movably provided with second rollers. In general, the application has the advantages of novel structure, convenient use, safety and stability and the like.

The application relates to the technical field of drainage devices, and a multifunctional negative pressure drainage ball, which comprises a negative pressure ball body, liquid inlet and liquid outlet arranged at two ends of the negative pressure ball body, a liquid inlet pipeline and a pressure adjusting device, one end of the liquid inlet pipeline is connected with the liquid inlet through a three-way pipe, a pressure gauge is connected to the three-way pipe, the pressure adjusting device is connected to the liquid inlet pipeline, the pressure adjusting device comprises a scale cylinder and a piston rod, the piston rod is slidably connected with the scale cylinder, one end of the scale cylinder away from the piston rod is connected with the liquid inlet pipeline and a cleaning liquid container through a connecting pipe and a cleaning pipe, first and second valves are respectively arranged on the connecting pipe and the cleaning pipe, and third and fourth valves are respectively arranged at two ends of the connecting position of the liquid inlet pipeline and the connecting pipe. The application can effectively improve the stability and smoothness of the drainage operation.