2results about How to "Reduce surprises" patented technology

This utility model discloses a concrete strength testing device, including a testing platform. Two clamping frames are arranged above the testing platform, and a moving mechanism is provided between the testing platform and the two clamping frames. A fixed cover is fixedly connected to the top of the testing platform, and an electric push rod is fixedly installed on the top of the fixed cover. A lifting platform is fixedly connected to the output end of the electric push rod, and the testing instrument body is fixedly connected to the bottom of the lifting platform. A dust suppression mechanism is provided on the testing platform. The moving mechanism includes a fixed groove on the testing platform and a motor on one side of the top of the testing platform. In this utility model, the moving mechanism can drive the two clamping frames to move stably closer to each other, thereby achieving a stable clamping and fixing of the concrete sample. This ensures the stability of the concrete sample during testing, provides a stable structural positioning, and reduces the likelihood of loosening, thus minimizing the occurrence of accidents.

The application provides an adjustable ureteral sheath, which comprises a supporting piece, a Y-shaped main body, a rotating mechanism, a guide sheath tube and an expansion mechanism; the Y-shaped main body comprises a first connecting port and a second connecting port, and the second connecting port is used for connecting a vacuum device; the expansion mechanism comprises an expander seat and an expander tube body, the expander seat is arranged on the first connecting port, and the supporting piece wraps the expander seat; the guide sheath tube wraps the expander tube body; the rotating mechanism comprises a rotating handle, a cam ring and a steel wire, the rotating handle is arranged on the cam ring, one end of the steel wire is arranged on the cam ring, the other end of the steel wire is arranged on the guide sheath tube, and the cam ring is arranged on the supporting piece. Through the rotating mechanism, the ureteral sheath can be adjusted and positioned, a stable channel is established, and an endoscope or a surgical instrument can conveniently enter and exit a lesion position.