2results about How to "Simple and convenient locking operation" patented technology

The utility model discloses a pressure sensor quick-locking structure for an indentation instrument, which comprises a positioning seat with a hollow interior to form a mounting cavity; the elastic unit is partially arranged in the mounting cavity and at least comprises a movable assembly, an elastic piece and a locking part, the elastic piece abuts against the movable assembly and the positioning base respectively, and the locking part is arranged at the end of the movable assembly and located outside the mounting cavity; the locking groove is formed in the end part of the pressure sensor and is provided with a groove body for the locking part to extend in and a locking convex part radially protruding from the side wall of the groove body; the locking protruding part can abut against the locking part to slide, the movable assembly moves along the installation cavity, and the elastic piece is compressed so that the locking part can be clamped between the positioning base and the locking protruding part. The utility model further discloses an indentation instrument. According to the utility model, the rapid locking of the pressure sensor and the positioning seat can be realized, then the rapid locking of the pressure sensor and the indentation instrument is realized, the locking operation is simple and convenient, and the replacement of pressure sensors with different measuring ranges is facilitated.

The utility model discloses a protective device for constructional engineering, and belongs to the technical field of constructional engineering. A protective device for constructional engineering comprises a first stand column and a second stand column used in cooperation with the first stand column, the first stand column is provided with a cavity structure, a winding shaft is arranged in the cavity structure, a protective net is arranged on the periphery of the winding shaft, a connecting rod is installed at the end, located outside, of the protective net, and the connecting rod is connected with the winding shaft. A positioning seat is installed at the end, located outside, of the winding shaft, and a locking piece used in cooperation with the positioning seat is arranged on the first stand column. According to the protection device, through cooperation of the first stand column and the second stand column, a protection system capable of being flexibly unfolded and stored is constructed, the protection function can be rapidly achieved only by pulling the protection net out of the cavity structure, matching the connection rod with the connection base on the second stand column and locking through the locking piece, and the protection device is convenient to use and high in practicability. And the actual requirements that the construction site layout and the construction progress change frequently are effectively met.