15results about How to "Change stress" patented technology

The invention relates to the technical field of lithium ion batteries, in particular to a copper foil, a preparation method thereof, a negative electrode containing the copper foil and a lithium ion battery. The copper foil comprises ultra-fine grains and nano twin crystals, the average grain size is 0.2-0.4 mu m, the area weighted average grain size is 0.3-0.8 mu m, and the proportion of the nano twin crystals in the copper foil is larger than 50%. The copper foil is prepared through a pulse electroplating technology, and the technology can control the average grain size and the proportion of nano twin crystals in the copper foil, so that the copper foil has high tensile strength and high ductility. According to the preparation method of the copper foil, a specific electrolyte is adopted at the same time, the tensile strength of the copper foil can reach 600-900 MPa, and the ductility is larger than 5%. When the copper foil is applied to the lithium ion battery, the volume expansion rate of a negative electrode material after charge-discharge circulation can be reduced, copper foil breakage caused by repeated volume change of the negative electrode material in the charge-discharge process is prevented, the cycle life of the battery is prolonged, and the safety of the battery is improved.

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.

The invention relates to the technical field of supercharger impeller housing machining, in particular to a supercharger impeller housing machining method and device. Comprising an outer pressing plate, an inner pressing plate, a screw rod, a fixing screw and a base, the outer pressing plate is fixedly connected with the base through the fixing screw and located at one end of the base, the inner pressing plate is connected with the screw rod in a sliding mode and arranged on the screw rod in a sleeving mode, the screw rod is connected with the base in a threaded mode and located at the inner bottom of the base, and the inner pressing plate is further located in the base. The stress condition during part machining is changed, the situation that the size and the form and location tolerance of the part cannot meet the design requirements due to clamping deformation during machining is improved, and in this way, the problems that according to the actual use requirements of the impeller housing, the wall thickness is small, the part strength is poor during machining, the part is prone to deformation in the machining process, and the machining cost is low are effectively solved. The size is out of tolerance after machining, and the use requirement cannot be met.

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 utility model belongs to the technical field of air conditioners, and particularly relates to a fan support and an air conditioner outdoor unit. The fan support comprises a support body and at least one anti-vibration piece, the head end and the tail end of the support body are used for being connected with an air conditioner outdoor unit body, a mounting hole used for mounting an outdoor fan is formed in the middle of the support body, and the anti-vibration piece is arranged on the side, away from the outdoor fan, of the support body and used for abutting against a condenser of the air conditioner outdoor unit. According to the draught fan support, the possibility that resonance is generated between the outdoor draught fan and the support body is reduced, and noise of an air conditioner outdoor unit is reduced.

The present invention relates to the technical field of lithium batteries, and specifically to a membrane-type surface stress sensor, comprising a sensor substrate, a support table fixedly arranged at one end of the sensor substrate, a mounting groove being provided on the support table, guide slots being symmetrically provided at both ends of the mounting groove, and movable sockets being symmetrically provided on both sides of the support table, and connecting through holes being provided in the movable sockets, a power source being fixedly arranged at the other end of the sensor substrate, wires being respectively provided on both sides of the power source, and an electrical signal detector being connected to the wires on one side. The present invention also relates to a gas detection and analysis method, comprising the following steps: step one: opening a protective movable cover; step two: supporting a piezoresistive element to access a circuit; and step three: analyzing electrical signals.

The utility model belongs to the technical field of jigs, and discloses an elastic jig which comprises a base, chromium-plated rods are symmetrically arranged at the four corners of the top end of the base, compression springs sleeve the chromium-plated rods, a jig seat is arranged at the top ends of the chromium-plated rods, a jig part is arranged at the top end of the jig seat, a groove is formed in the top end of the jig part, and a jig ring is arranged in the groove. An adjusting assembly is arranged at the top end of the base and comprises an adjusting knob and a top plate, a connecting hole matched with the chromium-plated rod is formed in the adjusting knob, the chromium-plated rod is sleeved with the adjusting knob, the bottom end of the top plate is arranged at the top end of the adjusting knob, and the top end of the top plate is fixedly connected to the bottom end of the compression spring. The adjusting assembly is arranged at the top end of the base, the compression spring can be extruded by rotating the adjusting assembly, so that the length of the compression spring is adjusted, the stress of the compression spring is changed, and the compression spring and the compressed spring can drive the jig base to reset.

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 invention provides a turbonator base and a welding method. The turbonator base comprises a base body. The engine base comprises an excitation end engine base, a middle engine base, a steam end engine base, a top plate and an outer cover plate. The top plate is in a long plate shape, top side plates are arranged on the two sides of the long edge of the top plate respectively, the excitation end machine base, the middle machine base and the steam end machine base are arranged between the two top side plates, the excitation end machine base, the middle machine base and the steam end machine base are sequentially welded to the top plate, and the excitation end machine base, the middle machine base, the steam end machine base and the top plate jointly form a machine base framework. An excitation end base is welded to the lower side of the excitation end machine base, and a steam end base is welded to the lower side of the steam end machine base. Bottom feet are arranged on the lower side of the middle machine base, outer wind path plates are welded to the two sides of the bottom feet, and the outer wind path plates form a wind channel. In the assembling and welding process, firstly, the top plate is placed on the platform, then all the sections of the base are assembled from the middle to the two sides, all the sections of the base are fixed in a lap welding mode, then the generator base is hoisted on the rolling tire base to be welded, the welding quality is improved, welding deformation is reduced, and the overall performance of the generator base is improved.

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.

The invention discloses a construction method for an anti-seepage system of a water plant pool wall and the anti-seepage system. The construction method comprises the steps of binding reinforcing steel bars, erecting a concrete formwork, machining triangular wood on site, placing galvanized stainless steel square pipes, pre-burying water stop plates, pouring concrete and removing side formworks. The anti-seepage system comprises vertical steel bars and water stop plates, and the lower portions of the vertical steel bars are bound in the transverse direction and the longitudinal direction through bidirectional steel bars. The vertical steel bars are poured in the concrete to form side walls of the pool; the water stop plate is pre-buried in the concrete; the anti-seepage problem of the reservoir wall can be solved, construction joints on the inner side and the outer side of the concrete wall can be straightened, and favorable conditions can be provided for next concrete construction; slurry leakage or slab staggering can be prevented, and the appearance of poured concrete is neat and attractive.