5results about How to "High structural utilization" patented technology

The application discloses a tight gas reservoir control factor analysis experimental equipment based on permeability measurement, which comprises an outer cylinder connected with an external confining pressure control assembly, two corresponding sealing end seats embedded into upper and lower ends of the outer cylinder, a sealing upper end head slidably connected in the upper end seat, a sealing lower end head slidably connected in the lower end seat, a sealing sleeve arranged between the two end seats, a test space formed among the two end seats, the upper end head, the lower end head and the sealing sleeve for accommodating a test sample, an end head control assembly for adjusting positions of the upper end head and the lower end head and providing fluid control for the two, a feeding assembly capable of providing at least a sample replacement into the test space, and a computer connected in communication with the end head control assembly, the external confining pressure control assembly and the feeding assembly.

The application discloses a wafer defect detection device and method, and belongs to the field of semiconductor element detection. The wafer defect detection device comprises a detection substrate, and further comprises a support assembly for fixing a wafer, the support assembly being reversibly mounted on the detection substrate; an air jet assembly for cleaning the surface of the wafer; and a coating assembly for spraying detection material on the surface of the wafer, the coating assembly being movably arranged above the support assembly. The wafer defect detection device can select the number of suction cups according to the size of the wafer, the contact friction between the suction cups and the wafer is small, and the damage to the wafer is reduced as much as possible. The size of the recess defect on the wafer is increased, so that the recess defect can be conveniently detected, the occurrence of the defect can be effectively detected in time, and the loss caused by the defect is reduced. The air pipe is used to remove dust on the surface of the wafer, and the coating of a compound and the timely surface cleaning can be realized.

This application discloses a tire mold, belonging to the field of tire mold technology. The tire mold includes: a base and a tread pattern shell. The base is provided with multiple positioning elements; the tread pattern shell is provided with a positioning groove, and the tread pattern shell is installed on the positioning elements. A flow guiding gap is formed between the tread pattern shell, the positioning elements, and the base. The flow guiding gap includes a first gap. The top surface of the positioning element abuts against the bottom wall of the positioning groove, and a first gap is formed between the tread pattern shell and the mounting surface. The base is provided with a first exhaust channel, and the positioning elements are provided with a second exhaust channel. The first exhaust channel and the second exhaust channel are connected, and the flow guiding gap is connected to the second exhaust channel. The tread pattern shell includes an arc-shaped transition section, which extends from the starting position to the side where the positioning groove is located. The tangent of the arc-shaped transition section at the starting position has an angle α with a preset direction, and the value range of α is: 0°≤α≤60°. This solves the technical problems of inconvenient tread pattern replacement and easy clogging of the exhaust structure in existing tire molds.

This invention relates to the field of static pressure testing technology, and provides a structural strength testing device for road and bridge construction, including a frame, a line fixing structure, a pressure testing module, a tensile testing module, and a rotary adjustment module. The line fixing structure includes a teardrop-shaped cable protrusion, a shaft connector, a pressure bearing platform, a hook pin, a displacement sensor, and a mother frame. The shaft connector is fixedly disposed between the teardrop-shaped cable protrusion and the mother frame. The pressure bearing platform and the displacement sensor are both fixedly disposed on the surface of the mother frame. The hook pin is fixedly disposed on the surface of the teardrop-shaped cable protrusion. The tensile testing module includes a pull ring and a pressure-applying protrusion, with the pressure-applying protrusion fixedly disposed inside the pull ring. The rotary adjustment module includes a pressure-bearing protrusion, which can contact the surface of the pressure-bearing protrusion. A spring is disposed between the mother frame and the frame. This invention solves the problems of single function, low efficiency, and high cost of existing technologies, and has the characteristics of high integration, high structural utilization, small size, and complete functions.

The invention discloses a sidewalk limited area profile steel cantilever bridge based on space optimization and a construction method thereof, and belongs to the technical field of cantilever sidewalk construction.The sidewalk limited area profile steel cantilever bridge comprises cantilever units arranged in the longitudinal direction of a road, and each cantilever unit comprises a profile steel main beam arranged in the transverse direction; an anchoring section of the profile steel main beam is arranged in a road structure and is wrapped by concrete to form a concrete anchoring body, a reinforcement cage is arranged on the outer side of the anchoring section, the reinforcement cage is integrally embedded in the concrete anchoring body, and bending moment and shearing force generated by a cantilever section of the profile steel main beam form a multi-path collaborative stress system through the profile steel main beam and the reinforcement cage. And the load is transmitted to the original road structure, so that the safe overhanging arrangement of the sidewalk is realized under the condition that a lower foundation does not need to be arranged. The problems that under the condition that the construction space of a sidewalk is limited, especially in areas close to rivers, valleys and other areas with limited space, the difficulty is large, and the manufacturing cost is high when a concrete structure is constructed from the valley bottom are solved.