34results about How to "Improve the strength of its own structure" patented technology

The invention relates to a grounding switch static contact and a straight swing plug-in grounding switch, and the grounding switch static contact comprises an upper cylinder part which is internally provided with a static contact finger, and a lower guide cover fixedly arranged at the lower end of the upper cylinder part; one end of the guide channel is an open end, and the other end is a closed end; an elastic buffer piece is arranged at the closed end in a protruding mode, and the elastic buffer piece is arranged towards the guide channel and used for being in elastic jacking fit with a moving contact entering the guide channel in a swinging mode so that the moving contact can be buffered and decelerated. When the moving contact swings to enter the guide channel and moves to the end of the guide channel, the moving contact is elastically pressed and matched with the elastic buffer piece, and the elastic buffer piece buffers, decelerates and stops the moving contact, so that the moving contact is conveniently inserted into the upper cylinder part along a straight line in the next step, and is electrically connected with the static contact arranged inside. The moving contact is buffered by using the elastic buffer member facing the guide channel, so that the elastic buffer member with a proper elastic coefficient can be selected conveniently, and the installation is relatively convenient.

The invention relates to a torsion sensing system based on a pressure strain material, in particular to a sensor for transferring torsional force or torque for detection in a large-load torsional force working environment. The torsion sensor provided in the invention comprises a center shaft and a sleeve, wherein grooves are formed at the circumference of the center shaft at intervals in the axial direction of the center shaft; a projection is formed between the adjacent grooves; connecting racks are alternately arranged on the projections; the center shaft is sleeved to the sleeve through the connecting racks; a fastening element is arranged on the sleeve so that the sleeve can be fixedly connected with the center shaft through the fastening element; a pressure strain material body is arranged in each groove and the two sides of the pressure strain material body are in contact with the walls of the groove, respectively; and one side of the pressure strain material body is fixedly connected to the projection. The torsion sensor provided in the invention is capable of bearing huge torsion and torque loads and keeping the consistency of forward and reverse torsion sensing signals, and is simple in structure and convenient for connection with a system to be measured. The torsion sensor is also especially suitable for the application fields requesting small structure size, high torsional strength requirement, and simple and convenient mounting.

The invention discloses a device and method for forming small-diameter flanging holes in an aluminum alloy plate through magnetic pulses, and belongs to the field of metal plate part plastic forming and manufacture. The device and method solve the problems that when the flanging holes are formed in the aluminum alloy plate through an existing magnetic pulse forming technology, the service life of a coil is short, damage easily happens to the machined workpiece, a plurality of flanging and forming procedures exist when a steel die is adopted, and the forming quality is not stable. A coil wire turn is packaged in a coil framework, a flanging female die is fixed to a bottom plate, the upper section of a positioning ring and the lower section of the positioning ring are arranged in a columnar magnetic trap and the flanging female die, a magnetic trap limiting ring is arranged on the upper end face of the columnar magnetic trap, the solenoid coil is arranged on the outer side wall of the columnar magnetic trap and the outer side wall of the magnetic trap limiting ring in a sleeved mode, and a longitudinal seam is formed in the side wall of the columnar magnetic trap. An upper pressing plate is arranged on the upper end face of the magnetic trap limiting ring and the upper end face of the coil framework. The aluminum alloy plate is arranged between the flanging female die and the coil framework, and two output ends of a magnetic pulse control circuit are connected with two wiring terminals of the coil wire turn. The device and method are used for forming the small-diameter flanging holes in the aluminum alloy plate through magnetic pulses.

The invention relates to a sensing system based on force strain materials, especially to an integrated sensor system that is capable of simultaneously carrying out pressure and pulling force detection under a large-load working environment. The large-load pressure and pulling force transducer includes an elastic frame; cavities are arranged on the elastic frame; penetrating openings are arranged at side surfaces of the cavities; and fasteners that are arranged on the elastic frame penetrate the penetrating openings. Piezoelectrics are arranged in the cavities; one ends of the piezoelectrics are fixedly connected with the fasteners; and the other ends of the piezoelectrics are contacted with inner walls in the cavities, wherein the inner walls of the cavities are opposite to the penetrating openings. According to the invention, the sensor can be applied to fields requiring to test a large load or a super large load, wherein the fields relates to pulling force and pressure detection fields of a building, a heavy machine, a bridge and hydraulic equipment and the like. According to the sensing system, it can be avoided that a sensor that is manufactured by a piezoelectric material cannot be applied to application occasions of detection on a large load force or a super large load force due to restrictions of compressive strength and tensile strength of the piezoelectric material itself.