2results about How to "Reliable sampling" patented technology

This utility model relates to the field of concentrate powder sampling technology, specifically to a ton-bag concentrate powder sampling device for use during the freezing period in extremely cold regions. One end of the sampling probe is provided with an incised perforated tooth pattern, and the other end is provided with an annular limiting buckle. The sampling probe has a strip-shaped pressure relief groove area, which is arranged along the axial direction of the sampling probe. Two anti-freeze hydraulic cylinders are arranged in parallel. The piston rod ends of the two anti-freeze hydraulic cylinders are connected to the push plate, and the bases of the two anti-freeze hydraulic cylinders are mounted on the fixed base plate. A movable sampling frame is provided between the two anti-freeze hydraulic cylinders, one end of which is connected to the push plate. The movable sampling frame has multiple pull-out slots that match the annular limiting buckle. Both the push plate and the fixed base plate have grooves that allow the sampling probe to pass through. This utility model enables efficient, accurate, and reliable sampling of ton-bag concentrate powder in extremely cold regions.

This utility model relates to the technical field of geotechnical engineering test sampling devices, specifically to a true triaxial undisturbed soil sampling device, comprising: a support assembly including a C-shaped panel and a lower panel fixedly connected by a fixed support column, the lower panel having a square hole at its center; two sampling counterweights, detachably and symmetrically installed on both sides of the lower panel; a sampling section including a sampling mold installed above the square hole via a power source; and a sample loading mold including two symmetrically arranged sleeves, with metal hoops fixedly installed on the outside of the two sleeves by adjusting bolts. This application can reduce disturbance to the soil sample, achieve low-disturbance sampling, maintain the original structure and stress state of the soil sample, meet the requirements of true triaxial testing for soil samples, obtain mechanical parameters that are difficult to measure through conventional testing through true triaxial testing, establish a more accurate soil constitutive model, describe the nonlinear relationship between stress-strain-strength, and provide key technical support for practical engineering.