4results about How to "No instability" patented technology

This invention relates to a hysteretic loading test system for small-tonnage dampers, belonging to the field of vibration control technology. It includes a steel main frame, H-beams, a lifting system, a guiding device, a loading system, a data acquisition system, and a damper connection device. The steel main frame includes a top plate, a bottom plate, and a platform plate on the same plane of symmetry; the lifting system includes a worm gear lift, a lead screw, an AC motor, and eccentric blocks; the guiding device includes two spaced linear optical axes; the loading system includes a servo electric cylinder, a servo driver, a braking resistor, and a PLC module; the data acquisition system includes a data acquisition instrument, sensor connectors, spoke-type tension / compression sensors, synchronization bolts, and wire-type displacement gauges; the damper connection device includes a force transmission support and a damper connection conversion platform. This invention can be applied to hysteretic loading tests of small-tonnage dampers, testing the mechanical properties of dampers, and can also be applied to other mechanical tests.

The utility model belongs to the technical field of harvester, concretely relates to a kind of harvester turnover cab limiting locking mechanism, including harvester main body platform, the side of the harvester main body platform is rotatably connected with two electric telescopic rods, two the electric telescopic rod between fixedly connected with harvester cab, the side of the harvester cab is provided with cab curtain, the side of the harvester cab is provided with safety door, the side of the harvester cab is provided with locking device, the locking device includes rotating pressure plate, the side of the rotating pressure plate is fixedly connected on the side of harvester cab. The side of the rotating pressure plate close to harvester cab is fixedly connected on the side of harvester main body platform. The utility model solves the problem that the existing cab turnover mechanism cannot be position limited after turnover is completed, leading to the rebound reset of cab, to ensure the safety of staff.

This invention provides a negative Poisson's ratio honeycomb structure for aero-engines, relating to the field of aerospace technology, to address the technical problem of poor impact intrusion resistance in existing aero-engine structures. The honeycomb structure includes a ring structure formed by multiple sub-cells arranged circumferentially. Each sub-cell is surrounded by two mirror-symmetrical first faces and two mirror-symmetrical bent faces. The two bent faces bend in a direction approaching each other, and each bent face is formed by two mirror-symmetrical second faces. Each first and second face is triangular in shape and shares a common first vertex. The second vertices of each first and second face are located on the same cylindrical surface, and the central axis of the cylindrical surface coincides with the central axis of the ring structure. The second vertex refers to any vertex of each first and second face other than the first vertex. This honeycomb structure improves the impact intrusion resistance of traditional structures.

This invention discloses a construction method for a small-sized aluminum formwork disc-lock system for high-rise non-residential buildings. The construction steps include seven major steps: construction preparation, determination of the aluminum-wood combination scheme, construction of wall and column reinforcement formwork, erection of disc-lock scaffolding, construction of beam and slab reinforcement formwork, concrete pouring, and dismantling of the formwork frame. The beneficial effects of this invention are: It uses 400mm×1000mm small-sized standard aluminum formwork, optimizes the main structure through a 50mm modular design, and uses special connecting angle aluminum and tie plates to achieve a reliable aluminum-wood combination for irregular parts. Combined with disc-lock scaffolding, it forms a stable support and early dismantling system, increasing the utilization rate of aluminum formwork in non-standard buildings to over 90%, effectively ensuring the quality of concrete forming, significantly reducing construction costs and time, and is suitable for the construction of high-rise non-residential building structures such as commercial complexes, hospitals, and schools.