8results about How to "Change stress" patented technology

The invention discloses a stripping type multi-material additive material powder laying system and method based on a mesh screen, the powder laying system comprises a forming chamber and a powder laying device, a forming platform and a moving platform are arranged in the forming chamber, the powder laying device is installed on the moving platform, and the powder laying device comprises a powder supply assembly, a powder suction assembly, a powder scraping assembly, a powder storage assembly and a powder stripping assembly. The powder suction assembly comprises a rotary mesh screen and a vacuum pump, when powder falls off from the powder supply assembly, powder particles can be adsorbed to the periphery of the mesh screen under the suction action of the vacuum pump, and in the process that the mesh screen rotates and the moving platform moves, the powder scraping assembly scrapes part of the powder particles to the powder storage assembly so as to control the thickness of the powder; the powder stripping assembly is used for stripping powder on the periphery of the mesh screen to the forming platform for powder laying, finally, the material types and the distribution form of the powder in the printing plane are accurately adjusted, powder scraping and powder stripping can be conducted at the same time while powder supply is conducted, and therefore the printing speed can be greatly increased, and the production efficiency is improved.

A die adjusting device of a press machine comprises a plunger type cylinder, a guide column, a nut lifting driving mechanism, an adjusting nut, a fixing seat and an upper cross beam. The lower ends of the guide columns are fixed to the base, and the upper ends of the guide columns penetrate through and extend out of the upper beam which is in sliding fit with the guide columns. A cylinder body of the plunger type cylinder is fixed to the fixing base, the fixing base is installed on the upper cross beam, and a plunger of the plunger type cylinder is arranged at the upper end of the guide column. The adjusting nut is sleeved outside the guide post in a penetrating manner, is in threaded connection with the guide post, is positioned above the upper cross beam and in the fixed seat, and is driven by the nut lifting driving mechanism to ascend or descend along the guide post; and the nut lifting driving mechanism is mounted on the upper cross beam. The die adjusting device of the press machine is simple in structure, simple in die adjusting and high in die adjusting precision.

The invention discloses a two-dimensional and three-dimensional interactive synchronous simulation method driven by production data. The two-dimensional and three-dimensional interactive synchronous simulation method specifically comprises the following steps: S1, inputting inlet and outlet temperatures of a three-phase separator and pressure values in the three-phase separator; s2, calculating according to the received numerical value by using commercial software, and respectively feeding back a calculation result to a 2D dynamic simulation unit and a 3D dynamic simulation unit; s3, switching 2D dynamic simulation and 3D dynamic simulation on the display unit by an operator; s4, real-time data are displayed at corresponding positions in the switching process of the 2D dynamic simulation and the 3D dynamic simulation; the invention belongs to the technical field of oil and gas field digital simulation, solves the problem that monitoring personnel cannot conveniently monitor internal data of a three-phase separator through a two-dimensional and three-dimensional interaction synchronous simulation method, can switch at any time through two-dimensional and three-dimensional interaction, correspondingly displays real-time conditions in real time, does not need to set two-dimensional and three-dimensional display systems at the same time, and is convenient to use. And the energy consumption is reduced.

The present invention discloses a multifunctional posture-changing nursing bed device, which specifically includes: a lifting support component, a bed board system driving bracket body, a side panel driving assembly, a main bed surface driving assembly, a main bed surface assembly, a first rotating retractable side panel assembly, a second rotating retractable side panel assembly, an air cushion assembly, and an electrically controlled air pump. The present invention solves the problems of existing nursing beds, such as poor comfort, poor safety, large size, and inability to achieve true rollover. Therefore, the application of the present invention can make the nursing work of the elderly and the disabled easier, more convenient, and more efficient, and can provide the market with a nursing device that is comfortable, safe, compact, and more suitable for use in places such as homes and nursing homes.

The embodiments of the present invention provide a dual-passband transversely excited bulk acoustic wave resonator, a manufacturing method thereof, and a filter, wherein the resonator comprises a piezoelectric layer, an electrode layer, and a heterogeneous layer; the material of the heterogeneous layer is different from that of the piezoelectric layer; the electrode layer and the heterogeneous layer are located on two opposite sides of the piezoelectric layer in the thickness direction; the electrode layer comprises an interdigitated electrode and a block electrode, and the overlapping region of the interdigitated electrode and the piezoelectric layer forms an active region; the projections of the heterogeneous layer and the active region in the thickness direction completely overlap; the technical solution of the present invention, by adding a heterogeneous layer under the piezoelectric layer, can change the stress and electric field distribution in the thickness direction of the resonator, so that the even-order modal mechanical-electric interaction energy of the resonator is not zero, thereby solving the problem that the traditional resonator can only excite a single resonant mode, and can simultaneously excite the A2 and A3 resonant modes, which is applied to the filter and is conducive to the miniaturization and high integration of the equipment.

The utility model discloses detection equipment for breathable elastic braid production, which comprises a main body mechanism, a plurality of tension adjusting mechanisms are fixedly mounted in the main body mechanism, quick release mechanisms are fixedly mounted at two ends of the main body mechanism, and each tension adjusting mechanism comprises a second mounting frame. A first screw rod is fixedly mounted at the top of the second mounting frame, a displacement rod is movably mounted in the first screw rod, a spring is movably mounted on the outer wall of the displacement rod, a screw rod motor is in threaded connection with the outer wall of the first screw rod, and a pressure sensor is fixedly mounted at the top of the displacement rod; by starting the lead screw motor to change the position of the lead screw motor on the outer wall of the first screw rod, the tension degree of the spring is changed, so that the stress between the mounting sleeve and the second mounting frame is changed, the pressure of the conveying roller on the elastic braid is accurately controlled, and the tension of the elastic braid is controlled within a constant range.

The invention relates to a fermentation tank which comprises a tank body and a stirring device, and the stirring device comprises a stirring shaft arranged in the tank body; the rotary starter is connected with the stirring shaft and drives the stirring shaft to rotate in a fixed-axis manner; the stirring blade is arranged on the stirring shaft, more than two through holes are formed in the stirring blade, each through hole is provided with a liquid facing surface and a liquid outlet surface, and the area of the liquid facing surface is larger than or equal to that of the liquid outlet surface. The fermentation tank disclosed by the invention not only facilitates fermentation conversion reaction of microorganisms and improves the mixing and reaction efficiency, but also can effectively save the replacement cost of the device and reduce the energy consumption.

The application discloses a handle structure with a spiral curved surface lock, which is used for locking a plug and a socket of a fluid connector, a handle accessory of the handle structure is connected to the plug through a shaft pin, the handle accessory comprises a locking part, a spiral curved surface for guiding a locking column on the socket is arranged on the locking part, and a locking groove for fixing the locking column is arranged on the locking part, the locking groove is connected with the spiral curved surface, a convex part is arranged at a position where the spiral curved surface transitions to the locking groove, and the locking column is connected to the locking part from the bottom to the top of the handle structure; the force applying mode from the bottom to the top of the application overcomes the self-locking in the connecting process of the existing structure, thereby overcoming the defect that the connection is stuck; the structure that the inflection point is added in the locking groove ensures the locking, prevents the self-unlocking phenomenon from occurring in the use process, and overcomes the defect that the locking shakes through the limiting structure.